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The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator
Open accessAbstract
As threats to species continue to increase, precise and unbiased measures of the impact these pressures are having on global biodiversity are urgently needed. Some existing indicators of the status and trends of biodiversity largely rely on publicly available data from the scientific and grey literature, and are therefore prone to biases introduced through over-representation of well-studied groups and regions in monitoring schemes. This can give misleading estimates of biodiversity trends. Here, we report on an approach to tackle taxonomic and geographic bias in one such indicator (Living Planet Index) by accounting for the estimated number of species within biogeographical realms, and the relative diversity of species within them. Based on a proportionally weighted index, we estimate a global population decline in vertebrate species between 1970 and 2012 of 58% rather than 20% from an index with no proportional weighting. From this data set, comprising 14,152 populations of 3,706 species from 3,095 data sources, we also find that freshwater populations have declined by 81%, marine populations by 36%, and terrestrial populations by 38% when using proportional weighting (compared to trends of -46%, +12% and +15% respectively). These results not only show starker declines than previously estimated, but suggests that those species for which there is poorer data coverage may be declining more rapidly.
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TL;DR
The paper develops a diversity-weighted Living Planet Index (LPI-D) to correct taxonomic and geographic bias in the Living Planet Index by weighting species trends according to estimated species richness across realms and taxa. It estimates a 58% global vertebrate population decline from 1970 to 2012, compared with 20% under the unweighted LPI.
Key findings
- The global LPI-D declined by 58% (95% CI: -48.3 to -66.0) between 1970 and 2012, an average annual decline of 2%, versus a 19.7% decline (95% CI: -6.6 to -30.9) and 0.52% annual decline for the unweighted LPI-U.
- System-level LPI-D declines were 81.5% for freshwater (95% CI: -68.5 to -89.3), 35.6% for marine (95% CI: -19.5 to -48.8), and 37.9% for terrestrial (95% CI: -20.4 to -51.5); Table 1 gives LPI-U 2012 index values of 0.544 for freshwater, 1.125 for marine, and 0.848 for terrestrial.
- For the Palearctic realm, LPI-U showed a 38.4% increase (95% CI: 12.7–66.2), while LPI-D showed a 30.3% decline (95% CI: -1.4 to -50.2).
- The database contained 14,152 populations of 3,706 species from 3,095 data sources; representation was biased toward temperate birds and mammals, with under-representation of most tropical realms and marine fishes, and Afrotropical herps representing less than 1% of known species.
Methods
- Data came from the Living Planet Database: time series of population size, density, abundance, or abundance proxies for vertebrate species from 1970 to 2012, requiring at least two years of data, consistent methods, and traceable sources.
- The LPI-D weighted trends by estimated known species richness across systems, biogeographic realms, and taxonomic groups (birds, mammals, fish, and combined herps), producing 57 subsets; systems were weighted equally, realms were weighted by species proportions within systems, and taxa were weighted by species proportions within realms.
- Population trends were modeled with Generalized Additive Models for series with six or more data points and the chain method otherwise; population lambdas were averaged to species trends, and 95% confidence intervals were generated with 10,000 bootstrap iterations. Binomial tests assessed taxonomic over- or under-representation.
Limitations
- Stated: the approach relies on reasonable species lists, which change over time and may be lower quality for less studied groups and regions; estimates of undescribed species (57% amphibians, 13% reptiles, 22% fish) suggest these groups could receive even greater weight and that declines may be steeper than estimated.
- Stated: LPI-D addresses broad geographic bias but not smaller-scale coverage gaps, such as Palearctic data being largely from Europe, Afrotropical data being better represented in eastern and southern Africa, and marine data clustering near coasts.
- Stated and evident: manual data entry is a critical limitation for growing the database; some abundance records are confidential and cannot be made publicly available, and incomplete IUCN assessments for fishes (745 of 1,369 species unassessed, plus 40 Data Deficient) limit the threatened-species representation analysis.
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A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“Our comparison to a study on geographic bias in terrestrial ecological sites revealed that 63% of the terrestrial sites in the LPD occur in a protected area which is the same proportion as found in Martin et al. (χ2 = 0.004, df = 1, p = 0.95), and more than the expected 13% (χ2 = 883.83, df = 1, p = 0.00).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Geographic representation within the living planet index
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesA result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“Based on a proportionally weighted index, we estimate a global population decline in vertebrate species between 1970 and 2012 of 58% rather than 20% from an index with no proportional weighting.”
- Also stated in: § Applying the LPI-D approach to the global living planet index · plain
“This result shows a greater rate of decline than the index calculated using the LPI-U approach which has an average annual decline of 0.52% per year and an overall decline of 19.7% (95% CI: -6.6 –-30.9), over the 42-year period.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Abstract
Load-bearingStrength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passes- Also stated in: § Applying the LPI-D approach to the global living planet index · plain
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“From this data set, comprising 14,152 populations of 3,706 species from 3,095 data sources, we also find that freshwater populations have declined by 81%, marine populations by 36%, and terrestrial populations by 38% when using proportional weighting (compared to trends of -46%, +12% and +15% respectively).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Abstract
Load-bearingStrength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIn the paper
“Our comparison to a study on geographic bias in terrestrial ecological sites revealed that 63% of the terrestrial sites in the LPD occur in a protected area which is the same proportion as found in Martin et al. (χ2 = 0.004, df = 1, p = 0.95), and more than the expected 13% (χ2 = 883.83, df = 1, p = 0.00).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Geographic representation within the living planet index
What the sources say
- Not checked yetcites Martin et al.
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesA result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“From this data set, comprising 14,152 populations of 3,706 species from 3,095 data sources, we also find that freshwater populations have declined by 81%, marine populations by 36%, and terrestrial populations by 38% when using proportional weighting (compared to trends of -46%, +12% and +15% respectively).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Abstract
Load-bearingStrength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesA result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“From this data set, comprising 14,152 populations of 3,706 species from 3,095 data sources, we also find that freshwater populations have declined by 81%, marine populations by 36%, and terrestrial populations by 38% when using proportional weighting (compared to trends of -46%, +12% and +15% respectively).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Abstract
Load-bearingStrength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesA result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“From this data set, comprising 14,152 populations of 3,706 species from 3,095 data sources, we also find that freshwater populations have declined by 81%, marine populations by 36%, and terrestrial populations by 38% when using proportional weighting (compared to trends of -46%, +12% and +15% respectively).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Abstract
Load-bearingStrength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesA result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“Our comparison to a study on geographic bias in terrestrial ecological sites revealed that 63% of the terrestrial sites in the LPD occur in a protected area which is the same proportion as found in Martin et al. (χ2 = 0.004, df = 1, p = 0.95), and more than the expected 13% (χ2 = 883.83, df = 1, p = 0.00).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Geographic representation within the living planet index
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesA result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“Based on a proportionally weighted index, we estimate a global population decline in vertebrate species between 1970 and 2012 of 58% rather than 20% from an index with no proportional weighting.”
- Also stated in: § Applying the LPI-D approach to the global living planet index · plain
“The global index produced using the LPI-D approach shows a decline of 58% (95% CI: -48.3 –-66.0) between 1970 and 2012 (Fig 5) which equates to an average annual decline of 2% per year.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Abstract
Load-bearingStrength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passes- Also stated in: § Applying the LPI-D approach to the global living planet index · plain
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“From this data set, comprising 14,152 populations of 3,706 species from 3,095 data sources, we also find that freshwater populations have declined by 81%, marine populations by 36%, and terrestrial populations by 38% when using proportional weighting (compared to trends of -46%, +12% and +15% respectively).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Abstract
Load-bearingStrength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passes
- It may state two separate claims as one. 42
- Probably not a substantial claim. 18
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“Global vertebrate richness overlaid with locations of populations currently recorded within the Living Planet Index shows biases towards temperate regions, which the Living Planet Index over-represents, and under-representation of tropical regions (Fig 2).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Geographic representation within the living planet index
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“Afrotropical amphibians and reptiles (‘Afrotropical Herps’) represent less than 1% of known species and South temperate and Antarctic reptiles are currently not represented at all in the LPI database (0%, of a possible 3 species; not shown in figure).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Taxonomic representation and bias within the living planet index
Load-bearingStrength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“The terrestrial index shows a 37.9% decline (95% CI: -20.4 –-51.5) from 1970 to 2012, averaging at a 1.13% decline per year.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > System trends: terrestrial, freshwater and marine
Load-bearingStrength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“In the marine system, the highest representation of species is for Pacific north temperate reptiles (100%, 2 species).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Taxonomic representation and bias within the living planet index
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✓ Based: passesProbably not a substantial claim. The paper’s conclusions may not depend on it.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“The freshwater index shows a decline of greater magnitude, 81.5% (95% CI: -68.5 –-89.3) over the 42-year period and an average annual decline of 3.94% per year.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > System trends: terrestrial, freshwater and marine
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In the paper
“The pattern of representation in wealthy countries was similar to Martin et al. but overall results were mixed with over- und under-representation of high and low income countries compared to the number of sites expected (S4 Table).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Geographic representation within the living planet index
What the sources say
- Not checked yetcites Martin et al.
Strength:plain· not yet calibratedCausal:correlational· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“The highest terrestrial and freshwater representation is for Nearctic birds (68%, 492 species out of a possible 725 species) and the lowest is for Afrotropical reptiles and amphibians (0.7%, 18 species of a possible 2,480 species).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Taxonomic representation and bias within the living planet index
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“For the marine system, 6 subsets represent between 1 and 10% and 16 subsets represent 10% or more of known species (S6B Table).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Taxonomic representation and bias within the living planet index
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“The taxonomic groups that are significantly under-represented in each terrestrial and freshwater realm are amphibians and reptiles, as well as fishes, the exception being Nearctic species which are all over-represented.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Taxonomic representation and bias within the living planet index
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“The rate with which new data are incorporated is relatively constant (S1 Fig), as a wealth of data remains available in the literature.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✓ Based: passesProbably not a substantial claim. The paper’s conclusions may not depend on it.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“The results of the LPI-D approach on the three system indices reveal that each show a greater decline than the LPI-U approach (Fig 6).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > System trends: terrestrial, freshwater and marine
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“For marine realms, the significant results for birds, mammals and reptiles show they are over-represented in all realms with the exception of South temperate and Antarctic reptiles where there is no representation of the three species (S8 Table).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Taxonomic representation and bias within the living planet index
Strength:plain· not yet calibratedCausal:correlational· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“The effect of using proportional weighting means that the influence of the over-represented groups such as birds and mammals has been reduced by over half and almost a fifth respectively, whereas the influence of fishes has been increased by over three-fold and amphibians/reptiles by over two-fold.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Impact of diversity weighting at the level of a realm: the palearctic
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A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“Each index shows a greater decline when these groups are removed, which is most noticeable in the Terrestrial LPI-D index but it is not significantly different.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > The impact of low-representation groups
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A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“The difference is also notable at the global level where the LPI-U suggests a decline of 19.7%, compared to a significantly larger declines of 58% in the LPI-D.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Load-bearingStrength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“This weighted approach (LPI-D) suggests that, on average, species populations within the Palearctic may have declined by 30.3% as opposed to increasing in abundance by 38.4% (Fig 4) in the unweighted index (LPI-U).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“This representation is varied with 12 subsets representing between 1 and 10% and 7 subsets representing over 10% of known species in the terrestrial and freshwater systems (S6A Table).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Taxonomic representation and bias within the living planet index
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“The data tend to be over-represented for temperate bird and mammal species, and under-represented for most species groups in tropical realms and for marine fishes.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
The paper states this without a source or data behind it here, so there is nothing to check it against. The quote shows it is in the paper.
In the paper
“Likewise in the Afrotropics, eastern and southern Africa are better represented than western and central Africa.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Strength:plain· not yet calibratedCausal:correlational· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✗ Based: failsProbably not a substantial claim. The paper’s conclusions may not depend on it. The paper may give no reason why it holds.
None of the sources cited for this claim have been checked yet.
In the paper
“For the marine system, data tend to be clustered near the coasts which is where most known impact from human activity occurs [41] but also the areas of higher species richness [42].”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
What the sources say
Strength:plain· not yet calibratedCausal:correlational· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
The paper states this without a source or data behind it here, so there is nothing to check it against. The quote shows it is in the paper.
In the paper
“For example, amphibians, which are not significantly over-represented by threatened species, along with reptiles, are given the highest weighting among the terrestrial species and the second highest weighting among freshwater species.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“Compared to the expected number of sites across biomes, the LPI over-represents Tropical deciduous woodland and under-represents Tropical evergreen woodland (S3 Table).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Geographic representation within the living planet index
Strength:plain· not yet calibratedCausal:correlational· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“For example, the data from the Palearctic realm is largely from Europe and there is much less coverage in Asia (Fig 2).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“When compared to the expected diversity of species across realms, the significant results for birds and mammals show over-representation within terrestrial and freshwater realms with the exception of Afrotropical birds which are under-represented (Binomial test of proportions, see S7 Table).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Taxonomic representation and bias within the living planet index
Strength:plain· not yet calibratedCausal:correlational· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“We also find a geographic bias in the terrestrial data portion of the LPD towards protected areas, tropical deciduous woodland and some wealthy countries, at the same time as under-representation of tropical evergreen woodland biomes.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Strength:plain· not yet calibratedCausal:correlational· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
The paper states this without a source or data behind it here, so there is nothing to check it against. The quote shows it is in the paper.
In the paper
“What is also important to note is that the majority of fish species (745 out of 1,369 species) have not yet been assessed by the IUCN Red List and a further 40 species are assessed as Data Deficient so these species were not included in this analysis.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesProbably not a substantial claim. It may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“For values derived from an equal distribution of sites by global area, all other biomes except Tundra are over-represented while results are less clear by an assumed equal distribution among biomes (S3 Table).”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Geographic representation within the living planet index
Strength:plain· not yet calibratedCausal:correlational· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“Fishes are a significantly under-represented group in the tropical and south temperate marine realms but are significantly over-represented in the Pacific north temperate.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Taxonomic representation and bias within the living planet index
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“The marine index shows a similar decline of 35.6% (95% CI: -19.5 –-48.8) over the same period, with an average annual decline of 1.04% per year.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > System trends: terrestrial, freshwater and marine
Load-bearingStrength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A result the paper reports from its own data — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“The LPI-D index for the Palearctic realm shows wider confidence intervals than the LPI-U index as well as a more undulating trend.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Results > Impact of diversity weighting at the level of a realm: the palearctic
Strength:plain· not yet calibratedCausal:correlational· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes? Load-bearing: unclear✓ Based: passesIt may state two separate claims as one.
None of the sources cited for this claim have been checked yet.
In the paper
“These types of bias are a common feature of other global biodiversity databases [10,11], usually with a noticeable gap in data from tropical regions [12].”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Introduction
What the sources say
- Not checked yetcites [10] EH Boakes, 2010, Distorted Views of Biodiversity: Spatial and Temporal Bias in Species Occurrence Data, PLoS Biol source
- Not checked yetcites [11] C Yesson, 2007, How Global Is the Global Biodiversity Information Facility?, PLoS ONE source
- Not checked yetcites [12] B Collen, 2008, The tropical biodiversity data gap: addressing disparity in global monitoring, Tropical Conservation Science source
Strength:plain· not yet calibratedCausal:correlational· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✓ Based: passesProbably not a substantial claim. The paper’s conclusions may not depend on it. It may state two separate claims as one.
None of the sources cited for this claim have been checked yet.
In the paper
“Furthermore, the performance of biodiversity indicators such as the LPI can be compromised by the presence of bias in the data and limited in effectiveness as tools in measuring progress towards specific policy targets [1,14].”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Introduction
What the sources say
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
None of the sources cited for this claim have been checked yet.
In the paper
“Other indicators based on species abundance (e.g. [15,16]) are developed for a selected group of species using a systematic monitoring protocol to collect the data used, so the indicator is spatially and taxonomically representative of the region and taxa in question.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Introduction
What the sources say
- Not checked yetcites [15] RD Gregory, 2005, Developing indicators for European birds, Philosophical Transactions of the Royal Society of London B: Biological Sciences source
- Not checked yetcites [16] CAM van Swaay, 2008, Butterfly monitoring in Europe: methods, applications and perspectives, Biodiversity and Conservation source
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
None of the sources cited for this claim have been checked yet.
In the paper
“The Living Planet Index (LPI) [7–9], one in the suite of global species indicators used to track progress towards Aichi Target 12, focusses on monitoring the population trends of vertebrate species.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Introduction
What the sources say
- Not checked yetcites [7] WWF (2016) Living Planet Report 2016: Risk and resilience in a new era WWF International, Gland, Switzerland.
- Not checked yetcites [8] B Collen, 2009, Monitoring Change in Vertebrate Abundance: the Living Planet Index, Conservation Biology source
- Not checked yetcites [9] J Loh, 2005, The Living Planet Index: using species population time series to track trends in biodiversity, Philosophical Transactions of the Royal Society of London B: Biological Sciences source
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✓ Based: passesProbably not a substantial claim. The paper’s conclusions may not depend on it. It may state two separate claims as one.
What the paper did — it cites no source for this, so there is none to check. The quote shows it is in the paper.
In the paper
“The Living Planet Database contains a number of abundance records that have been provided in confidence. These are used to calculate the presented trends and statistics, but cannot be made publically available.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Materials and Methods > Calculating the LPI
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What the paper did — it cites no source for this, so there is none to check. The quote shows it is in the paper.
In the paper
“The year 2012 is chosen as the cut-off point for the index because at present there are insufficient data to calculate a robust index after this point due to publication time-lag.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Materials and Methods > Data collection for the LPI
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None of the sources cited for this claim have been checked yet.
In the paper
“The LPI includes available published data, primarily in the scientific and grey literature (e.g. government/NGO reports) taken from the Living Planet Database (LPD) and records trends in 14,152 populations of 3,706 species.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Introduction
What the sources say
- Not checked yetcites [7] WWF (2016) Living Planet Report 2016: Risk and resilience in a new era WWF International, Gland, Switzerland.
- Not checked yetcites [8] B Collen, 2009, Monitoring Change in Vertebrate Abundance: the Living Planet Index, Conservation Biology source
- Not checked yetcites [9] J Loh, 2005, The Living Planet Index: using species population time series to track trends in biodiversity, Philosophical Transactions of the Royal Society of London B: Biological Sciences source
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✓ Based: passesProbably not a substantial claim. The paper’s conclusions may not depend on it. It may state two separate claims as one.
A conclusion the paper draws from its own results — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“We note that weighting by species diversity is only one of a number of potential weightings that could be applied to make the trends more ‘representative’.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Strength:hedged· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✓ Based: passesProbably not a substantial claim. The paper’s conclusions may not depend on it.
In the paper
“Improving the coverage of Data Deficient species, as categorised by the IUCN Red List, might introduce negative trends if these species are likely to be threatened, as has been predicted for terrestrial mammals [43].”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
What the sources say
- Not checked yetcites [43] LM Bland, 2015, Predicting the conservation status of data-deficient species, Conservation Biology source
Strength:hedged· not yet calibratedCausal:conditional· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✓ Based: passesProbably not a substantial claim. The paper’s conclusions may not depend on it.
In the paper
“However, tropical regions tend to have higher richness and a greater proportion of threatened species [34], so this method may introduce another bias by placing a high proportion of weight on groups that may be less well monitored, under-represented, or more likely to be categorized as threatened.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
What the sources say
- Not checked yetcites [34] R Grenyer, 2006, Global distribution and conservation of rare and threatened vertebrates, Nature source
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A conclusion the paper draws from its own results — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“Furthermore, species threatened under other criteria may be experiencing population declines but sufficient data are just not available to contribute to the Red Listing assessment.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Strength:hedged· not yet calibratedCausal:conditional· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✗ Based: failsProbably not a substantial claim. The paper’s conclusions may not depend on it. The paper may give no reason why it holds. It may state two separate claims as one.
In the paper
“Estimates for the number of as yet unidentified birds and mammals are small (e.g. ~10–15 species), but the number of unidentified amphibians, reptiles and fish are much larger with respective estimates of 57%, 13% and 22% undescribed [44].”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
What the sources say
- Not checked yetcites [44] BR Scheffers, 2012, What we know and don’t know about Earth's missing biodiversity, Trends in Ecology & Evolution source
Load-bearingStrength:hedged· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
In the paper
“Other approaches have been used, for example, to account for the differing proportion of a species’ total population across different countries [15].”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
What the sources say
- Not checked yetcites [15] RD Gregory, 2005, Developing indicators for European birds, Philosophical Transactions of the Royal Society of London B: Biological Sciences source
Strength:plain· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✓ Based: passesProbably not a substantial claim. The paper’s conclusions may not depend on it.
A conclusion the paper draws from its own results — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“A limitation of our current approach is that it is reliant on reasonable species lists, which are known to change over time and may be of lower quality for less studied groups and regions.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A conclusion the paper draws from its own results — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“For example, the bias towards data from protected areas might suggest the LPI would show a greater decline if counterfactuals from unprotected sites were equally monitored, on the assumption that protection has a positive effect on population trends.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Strength:hedged· not yet calibratedCausal:conditional· not yet calibratedTests✗ Asserted: fails✓ Checkable: passes✗ Load-bearing: fails✗ Based: failsProbably not a substantial claim. The authors may not put it forward as true. The paper’s conclusions may not depend on it. The paper may give no reason why it holds.
- The authors state this as an assumption: Protection has a positive effect on population trends.
None of the sources cited for this claim have been checked yet.
In the paper
“Trends in abundance of species populations are a crucial indicator of biodiversity [28,29] and can provide early warnings of declines prior to species qualifying for high levels of extinction risk [30].”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
What the sources say
- Not checked yetcites [28] L Santini, Assessing the suitability of diversity metrics to detect biodiversity change, Biological Conservation
- Not checked yetcites [29] ST Buckland, 2011, The geometric mean of relative abundance indices: a biodiversity measure with a difference, Ecosphere source
- Not checked yetcites [30] B Collen, 2011, Predicting how populations decline to extinction. Philosophical Transactions of the Royal Society B, Biological Sciences source
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
In the paper
“Consequently, this metric has been recommended as an Essential Biodiversity Variable [31], and, its use in geometric mean abundance indicators such as the Living Planet Index (LPI), is part of the mechanism to monitor biodiversity and assess progress towards the Aichi Targets.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
What the sources say
- Not checked yetcites [31] HM Pereira, 2013, Essential Biodiversity Variables, Science source
Strength:plain· not yet calibratedCausal:correlational· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✓ Based: passesProbably not a substantial claim. The paper’s conclusions may not depend on it. It may state two separate claims as one.
A conclusion the paper draws from its own results — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“Alternatively, declines may be exacerbated by a prevalence of coastal marine data; areas of high human impact and where many heavily exploited commercial fish stocks are monitored.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Strength:hedged· not yet calibratedCausal:conditional· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✓ Based: passesProbably not a substantial claim. The paper’s conclusions may not depend on it.
A conclusion the paper draws from its own results — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“As threatened species assessed under Criterion A are significantly over-represented in all groups except for amphibians, we can infer that the LPI has a bias towards negative population trends.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A conclusion the paper draws from its own results — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“These latter groups would therefore be given even greater weight, suggesting that vertebrate populations may be declining, on average, even more rapidly that we currently estimate.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Tests✓ Asserted: passes✓ Checkable: passes✓ Load-bearing: passes✓ Based: passesIt may state two separate claims as one.
A conclusion the paper draws from its own results — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“We might expect that as the weighted index places more weight on less monitored groups in more species-rich regions, we would be exaggerating the declines in abundance–as we might expect these groups to be declining more.”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
Strength:hedged· not yet calibratedCausal:conditional· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✓ Based: passesProbably not a substantial claim. The paper’s conclusions may not depend on it. It may state two separate claims as one.
In the paper
“For example we know that tropical vertebrate populations are in worse decline than those in temperate regions [45] and that amphibians are threatened with a greater risk of extinction than mammals or birds [46].”
§ The Diversity-Weighted Living Planet Index: Controlling for Taxonomic Bias in a Global Biodiversity Indicator > Discussion
What the sources say
- Not checked yetcites [46] SN Stuart, 2004, Status and Trends of Amphibian Declines and Extinctions Worldwide, Science source
Strength:boosted· not yet calibratedCausal:correlational· not yet calibratedTests✓ Asserted: passes✓ Checkable: passes✗ Load-bearing: fails✓ Based: passesProbably not a substantial claim. The paper’s conclusions may not depend on it.
The authors state this as an assumption.
Protection has a positive effect on population trends.
“on the assumption that protection has a positive effect on population trends.”
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
In the citing paper
“Freshwater ecosystems have suffered the strongest decline of global biodiversity, while their vertebrate populations alone have declined by 83% between 1970 and 2012 [4], with maximum values of 94% in the Neotropics [5].”
From Urban Stream and Wetland Restoration in the Global South—A DPSIR Analysis (2019) · cites this paper as [4]
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
Each contradiction between two passages listed here was confirmed by an independent check.
Abstract reverses the unweighted terrestrial trend
MajorThe abstract reports a 15% increase for the unweighted terrestrial index, but Table 1 gives its 2012 value as 0.848 relative to a 1970 baseline of 1-a decline of about 15%.
“freshwater populations have declined by 81%, marine populations by 36%, and terrestrial populations by 38% when using proportional weighting (compared to trends of -46%, +12% and +15% respectively).”
“| Terrestrial | 0.621 | 0.485–0.796 | 0.848 | 0.702–1.02 |”
Marine group with zero representation contradicts removal rationale
MinorThe paper identifies a marine reptile group with 0% representation, then says no marine groups have less than 1% representation.
“South temperate and Antarctic reptiles are currently not represented at all in the LPI database (0%, of a possible 3 species; not shown in figure).”
“As no groups within the marine realm have < 1% representation, we only present the differences in global, freshwater and terrestrial indices.”
Citations
Cites
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Desa, U. (2018) · Springer Publishing Company eBooks · doi:10.1891/9780826190123.ap02 · Cited by 19,478
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Dirzo, R., Young, H. S., Galetti, M., Ceballos, G., Isaac, N. J. B., & Collen, B. (2014) · Science · doi:10.1126/science.1251817 · Cited by 4,474
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The biodiversity of species and their rates of extinction, distribution, and protection
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Essential Biodiversity Variables
Pereira, H. M., Ferrier, S., Walters, M., Geller, G. N., Jongman, R. H. G., Scholes, R. J., Bruford, M. W., Brummitt, N., Butchart, S. H. M., Cardoso, A. C., et al. (2013) · Science · doi:10.1126/science.1229931 · Cited by 1,637
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A mid-term analysis of progress toward international biodiversity targets
Tittensor, D. P., Walpole, M., Hill, S. L. L., Boyce, D. G., Britten, G. L., Burgess, N. D., Butchart, S. H. M., Leadley, P. W., Regan, E. C., Alkemade, R., et al. (2014) · Science · doi:10.1126/science.1257484 · Cited by 1,227
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Items 101–200 of 236
The utility of the Living Planet Index as a policy tool and for measuring nature recovery
McRae, L., Cornford, R., Marconi, V., Puleston, H., Ledger, S. E. H., Deinet, S., Oppenheimer, P., Hoffmann, M., & Freeman, R. (2025) · Philosophical Transactions of the Royal Society B Biological Sciences · doi:10.1098/rstb.2023.0207 · Cited by 16
“While it is not a perfect solution (see [3,24]), the weighting is designed to improve the index over an unweighted version [23].”
Self-citationLear, K. O., Morgan, D. L., Whitty, J. M., Beatty, S. J., & Gleiss, A. C. (2020) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2020.142234 · Cited by 16
Browning, E., Freeman, R., Boughey, K. L., Isaac, N. J. B., & Jones, K. E. (2022) · Ecological Indicators · doi:10.1016/j.ecolind.2022.108719 · Cited by 16
“Current important global indicator metrics, such as the Living Planet Index (Collen et al., 2009; McRae et al., 2017), depend on the collation of regional, national, and local scale biodiversity monitoring.”
BackgroundSelf-citationEffects of land use and soil properties on taxon richness and abundance of soil assemblages
Burton, V. J., Baselga, A., Palma, A. D., Phillips, H. R. P., Mulder, C., Eggleton, P., & Purvis, A. (2023) · European Journal of Soil Science · doi:10.1111/ejss.13430 · Cited by 16
“…the mixed-effects methods used are robust to unbalanced data sets, further work to explore these differences, such as the use of taxonomic weights (McRae et al., 2017), or by level of adaptation to soil environments (e.g., eco-morphological index, EMI, Parisi et al., 2005; Yan et al., 2012),…”
MethodTropical beetles more sensitive to impacts are less likely to be known to science
Boyle, M. J. W., Sharp, A. C., Barclay, M. V. L., Chung, A. Y. C., Ewers, R. M., de Rougemont, G., Bonebrake, T. C., Kitching, R. L., Stork, N. E., & Ashton, L. A. (2024) · Current Biology · doi:10.1016/j.cub.2024.06.059 · Cited by 16
Husby, M., Hoset, K. S., & Butler, S. J. (2020) · Ibis · doi:10.1111/ibi.12896 · Cited by 16
“…is properly cited and is not used for commercial purposes. species indicators (hereafter MSIs) such as the Living Planet Index (Loh et al. 2005, McRae et al. 2017) and European Farmland Bird Index (Gregory et al. 2005), are increasingly used both to monitor the state of important ecosystems…”
BackgroundWhat’s hot and what’s not: Making sense of biodiversity ‘hotspots’
Thompson, M. S. A., Couce, E., Webb, T. J., Grace, M., Cooper, K. M., & Schratzberger, M. (2020) · Global Change Biology · doi:10.1111/gcb.15443 · Cited by 15
Prioritize wild species abundance indicators
Geldmann, J., Byaruhanga, A. B., Gregory, R. D., Visconti, P., & Xu, H. (2023) · Science · doi:10.1126/science.adh4409 · Cited by 15
Bird genetic databases need improved curation and error reporting to NCBI
van den Burg, M. P., & Vieites, D. R. (2022) · Ibis · doi:10.1111/ibi.13143 · Cited by 13
New paths for modelling freshwater nature futures
Kramer, L., Teurlincx, S., Rashleigh, B., Janssen, A. B. G., Janse, J. H., Brauman, K. A., Földesi, C., van Wijk, D., Domis, L. N. D. S., Patil, S. D., et al. (2023) · Sustainability Science · doi:10.1007/s11625-023-01341-0 · Cited by 19
“It is estimated that almost a third of the monitored vertebrate freshwater species are threatened with extinction (Collen et al. 2014; WWF 2020), and their populations globally have declined by 81% since 1970 (McRae et al. 2017).”
Flinte, V., Pádua, D. G., Durand, E. M., Hodgin, C., Khattar, G., da Silveira, L. F. L., Fernandes, D. R. R., Sääksjärvi, I. E., Monteiro, R. F., Macedo, M. V., et al. (2023) · Insects · doi:10.3390/insects14110861 · Cited by 16
“However, a potentially serious impediment to effective conservation is knowledge bias [10–12].”
BackgroundPopulation declines among Canadian vertebrates: But data of different quality show diverging trends
Marconi, V., McRae, L., Müller, H., Currie, J., Whitmee, S., Gadallah, F. L., & Freeman, R. (2021) · Ecological Indicators · doi:10.1016/j.ecolind.2021.108022 · Cited by 18
Self-citationTaiwan's Breeding Bird Survey reveals very few declining species
Lin, D., Ko, J. C., Amano, T., Hsu, C.-T., Fuller, R. A., Maron, M., Fan, M.-W., Pursner, S., Wu, T.-Y., Wu, S., et al. (2022) · Ecological Indicators · doi:10.1016/j.ecolind.2022.109839 · Cited by 13
Talis, E. J., Che‐Castaldo, C., Hart, T., McRae, L., & Lynch, H. J. (2023) · Polar Biology · doi:10.1007/s00300-023-03148-2 · Cited by 13
Self-citationPatterns of species richness and turnover in endemic amphibians of the Guineo‐Congolian rain forest
Nneji, L. M., Azevedo, J. A. R., Oyebanji, O. O., Ma, L., Elsen, P. R., Oladipo, S. O., Salako, G., Puschendorf, R., & Pringle, R. M. (2023) · Diversity and Distributions · doi:10.1111/ddi.13717 · Cited by 13
“For example, Afrotropical wet forests are inordinately important centres of biodiversity, yet their endemic species richness patterns remain poorly characterized (Anthony et al., 2015; McRae et al., 2017).”
BackgroundBiodiversity Monitoring and the Role of Scientists in the Twenty-first Century
Ferreira, C., Stephenson, P. J., Gill, M., & Regan, E. (2021) · Wildlife research monographs · doi:10.1007/978-3-030-81085-6_2 · Cited by 13
Šigutová, H., Pyszko, P., Bílková, E., & Dolný, A. (2025) · Global Change Biology · doi:10.1111/gcb.70183 · Cited by 12
The L iving P lanet I ndex's ability to capture biodiversity change from uncertain data
Hébert, K., & Gravel, D. (2023) · Ecology · doi:10.1002/ecy.4044 · Cited by 12
The Many Pathways of Mining Impacts on Biodiversity
Barbarossa, V., Schipper, A. M., Andringa, I., van Oorschot, M. M. P., Sonter, L. J., & Marques, A. (2026) · Conservation Letters · doi:10.1111/con4.70000 · Cited by 16
“Existing multi-pressure biodiversity assessment models could provide a good starting point and allow comparing impacts on biodiversity across multiple pressures (Scholes and Biggs 2005; Visconti et al. 2016; Mcrae et al. 2017; Ohashi et al. 2019; Leclère et al. 2020; Schipper et al. 2020).”
Abundance and Variety in Nature: Fact and Value
Mikkelson, G. M. (2022) · Philosophia · doi:10.1007/s11406-021-00451-2 · Cited by 11
An analysis of threats and factors that predict trends in Canadian vertebrates designated as at-risk
Currie, J., & Marconi, V. (2020) · FACETS · doi:10.1139/facets-2019-0017 · Cited by 12
Panja, S., Podder, A., & Homechaudhuri, S. (2020) · Limnologica · doi:10.1016/j.limno.2020.125779 · Cited by 12
Liu, W., Mu, T., Yuan, S., Yi, J., Yu, D., Li, J.-Q., Ma, F., Wan, Y., Chen, J., Zhang, R., et al. (2024) · Eco-Environment & Health · doi:10.1016/j.eehl.2024.10.001 · Cited by 9
Korner‐Nievergelt, F., Strebel, N., Buckland, S. T., Freeman, R., Gregory, R. D., Guélat, J., Isaac, N. J. B., Rae, L. M., Roth, T., Schirmer, S., et al. (2022) · Ecological Indicators · doi:10.1016/j.ecolind.2022.109005 · Cited by 10
“Whilst equal weighting of species is generally seen as a desirable property of MSIs, unequal weighting is sometimes applied to address unrepresen-tative taxonomic or geographic coverage (McRae et al., 2017).”
BackgroundSelf-citationAment, J. M., Collen, B., Carbone, C., Mace, G. M., & Freeman, R. (2019) · People and Nature · doi:10.1002/pan3.10041 · Cited by 9
Self-citationFernández-Arellano, G., Teixido, A. L., Bernardon, B., Bueno, E. D. R., Ferreira, T. V., Gonçalves, S. R. A., Jesus, M., Thomas, K. P. C. S., Zucchetto, M., Piacentini, V. D. Q., et al. (2021) · Ibis · doi:10.1111/ibi.12931 · Cited by 10
Kalogianni, E., Kapakos, Y., Oikonomou, A., Giakoumi, S., & Zimmerman, B. (2022) · Journal for Nature Conservation · doi:10.1016/j.jnc.2022.126191 · Cited by 10
Body mass and latitude as global predictors of vertebrate populations exposure to multiple threats
Capdevila, P., Noviello, N., McRae, L., Freeman, R., & Clements, C. F. (2022) · Ecography · doi:10.1111/ecog.06309 · Cited by 15
Self-citationProcrustean beds and empty boxes: On the magic of creating environmental data
Jarić, I., Quétier, F., & Meinard, Y. (2019) · Biological Conservation · doi:10.1016/j.biocon.2019.07.006 · Cited by 10
A global indicator of utilised wildlife populations: regional trends and the impact of managementPreprint
McRae, L., Freeman, R., Geldmann, J., Moss, G. B., Kjær-Hansen, L., & Burgess, N. D. (2020) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2020.11.02.365031 · Cited by 10
Self-citationNúñez‐Riboni, I., Chelton, D. B., & Marconi, V. (2022) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2022.160219 · Cited by 9
Impacts of climate change on dragonflies and damselflies in West and Central Asia
Cadena, J. T., Boudot, J., Kalkman, V. J., & Marshall, L. (2023) · Diversity and Distributions · doi:10.1111/ddi.13704 · Cited by 9
“However, not all ecosystems are changing at the same rate: freshwater biodiversity is declining faster than both marine and terrestrial biodiversity (McRae et al., 2017).”
BackgroundLear, K. O., Ebner, B. C., Fazeldean, T., Whitty, J. M., & Morgan, D. L. (2023) · Ecology Of Freshwater Fish · doi:10.1111/eff.12698 · Cited by 9
Panja, S., Chakrabarty, M., Podder, A., Roy, A., Biswas, M., & Homechaudhuri, S. (2021) · Tropical Ecology · doi:10.1007/s42965-021-00171-4 · Cited by 9
Ruhl, H. A., Bett, B. J., Ingels, J., Martin, A. P., Gates, A. R., Yool, A., Benoist, N. M. A., Appeltans, W., Howell, K. L., & Danovaro, R. (2023) · Limnology and Oceanography Letters · doi:10.1002/lol2.10332 · Cited by 8
“For example, the Post-2020 Global Biodiversity Framework of the United Nations Convention on Biological Diversity (CBD) has proposed a target to protect 30% of the land and ocean areas by 2030.”
MethodInfluentialAn annotated checklist of recent non-marine Ostracoda (Crustacea) from Argentina, South America
Sabater, L. M., MONFERRAN, M. D., Higuti, J., & Pérez, P. (2023) · Zootaxa · doi:10.11646/zootaxa.5336.2.1 · Cited by 8
Kalogianni, E., Koutsikos, N., Karaouzas, I., Smeti, E., Kapakos, Y., Laschou, S., Dimitriou, E., & Vardakas, L. (2022) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2022.160595 · Cited by 8
A plea for more freshwater experts in IPBES
Kuiper, J. J. (2023) · Aquatic Conservation Marine and Freshwater Ecosystems · doi:10.1002/aqc.3956 · Cited by 9
Jackson, M. C., Friberg, N. R., Cachazo, L. M., Clark, D. R., Mutinová, P. T., O’Gorman, E. J., Kordas, R. L., Gallo, B., Pichler, D. E., Bespalaya, Y. V., et al. (2024) · Communications Biology · doi:10.1038/s42003-024-05936-w · Cited by 10
“However, responses to human activity among regionsandbiomes(e.g. Arctictundravsborealforest),andecosystemtypes (e.g. aquaticvsterrestrial) 1,5 are often inconsistent, with a particular paucity of data on freshwaters, especially at high latitudes (but see ref.”
Badalotti, A., van Galen, L. G., Vié, J., & Stephenson, P. J. (2021) · Oryx · doi:10.1017/s0030605320000538 · Cited by 8
Five recommendations to fill the blank space in indicators at local and short-term scales
Hébert, K., Jousse, M., Serrano, J., Karger, D. N., Blanchet, F. G., & Pollock, L. J. (2025) · Biological Conservation · doi:10.1016/j.biocon.2025.111007 · Cited by 7
Models and Indices of Sustainability Assessment in the Energy Context
Ziemba, P., Becker, A., & Becker, J. (2022) · Energies · doi:10.3390/en15249465 · Cited by 7
Xiaowei, J., Xianfu, Z., Xiaodong, 渠. Q., Renji, X., Shouliang, H., Wang, Y., Fusheng, W., & Wu, F. (2023) · Journal of Lake Sciences · doi:10.18307/2023.0300 · Cited by 7
Panja, S., Podder, A., Chakrabarty, M., & Homechaudhuri, S. (2022) · Aquatic Ecology · doi:10.1007/s10452-022-09973-7 · Cited by 7
“With increasing anthropogenic pressures upon the watersheds of freshwater rivers, lakes, streams, and reservoirs, the organisms are becoming susceptible to disease, mortality, reproductive failures, and, ultimately, local extinctions (Sarkar et al. 2008; McRae et al. 2017).”
BackgroundConcurrent threats and extinction risk in a long‐lived, highly fecund vertebrate with parental care
Brooks, G. C., Hopkins, W. A., & Kindsvater, H. K. (2024) · Ecological Applications · doi:10.1002/eap.2946 · Cited by 7
Assessing the global impact of targeted conservation actions on species abundancePreprint
Jellesmark, S., Blackburn, T. M., Dove, S., Geldmann, J., Visconti, P., Gregory, R. D., McRae, L., & Hoffmann, M. (2022) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2022.01.14.476374 · Cited by 9
“Since 1998, the LPD has provided the vertebrate population abundance data used to estimate the Living Planet Index (Collen et al. 2009; McRae et al. 2017; McRae et al. 2020), one of the key global indicators for biodiversity, and a measure adopted and used by the Convention of Biological Diversity…”
BackgroundMethodInfluentialSelf-citationAssessing the value of citizen scientist observations in tracking the abundance of marine fishes
Greenberg, D. A., Pattengill‐Semmens, C. V., & Semmens, B. X. (2024) · Conservation Letters · doi:10.1111/conl.13009 · Cited by 6
“Although thousands of population monitoring programs have been conducted on various taxa across the world, only a small fraction of species are known to have any time-series of population abundance (McRae et al., 2017; Moussy et al., 2021).”
BackgroundBoënnec, M., Dakos, V., & Devictor, V. (2024) · Diversity and Distributions · doi:10.1111/ddi.13932 · Cited by 7
Juvigny‐Khenafou, N. P. D., Burgazzi, G., Steiner, N., Harvey, É., Terui, A., Piggott, J. J., Manfrin, A., Feckler, A., Leese, F., & Schäfer, R. B. (2023) · The Science of The Total Environment · doi:10.1016/j.scitotenv.2023.168836 · Cited by 6
Variable effects of protected areas on long‐term multispecies trends for Australia's imperiled birds
Bayraktarov, E., Correa, D. F., Suárez‐Castro, A. F., Garnett, S. T., Macgregor, N. A., Possingham, H. P., & TULLOCH, A. I. T. (2021) · Conservation Science and Practice · doi:10.1111/csp2.443 · Cited by 6
“Following the methodology developed to build the TSX, we used the Living Planet Index (LPI) method (Collen et al., 2009; Loh et al., 2005; McRae et al., 2017) to produce multi-taxon trends to estimate a yearly change in average bird taxa data in relation to a baseline year for which the index is…”
InfluentialAutomated synthesis of biodiversity knowledge requires better tools and standardised research output
Cornford, R., Millard, J. W., González‐Suárez, M., Freeman, R., & Johnson, T. F. (2022) · Ecography · doi:10.1111/ecog.06068 · Cited by 6
Self-citationMoreno, I., Gippet, J. M. W., Fumagalli, L., & Stephenson, P. J. (2022) · Biodiversity and Conservation · doi:10.1007/s10531-022-02497-4 · Cited by 6
“2017), partly reflecting an over-representation of mammals and birds within vertebrates research and monitoring (Bonnet et al. 2002; McRae et al. 2017; Christie et al. 2021; Moussy et al. 2022).”
BackgroundInfluentialLin, D., Maron, M., Amano, T., Chang, A., & Fuller, R. A. (2022) · Ibis · doi:10.1111/ibi.13179 · Cited by 5
Consequences of underexplored variation in biodiversity indices used for land‐use prioritization
Crawford, C. L., Estes, L. D., Searchinger, T. D., & Wilcove, D. S. (2021) · Ecological Applications · doi:10.1002/eap.2396 · Cited by 6
Méndez-Herranz, M., Ibarra, J. T., Rozzi, R., & Marini, G. (2023) · Ecology and Society · doi:10.5751/es-14080-280218 · Cited by 7
“…conservation, which mainly favor vertebrates (Bonnet et al. 2002, Clark and May 2002, Fjellstrom 2002, Hecnar 2009, Taborsky 2009, Martín-López et al. 2011, Donaldson et al. 2016, McRae et al. 2017, Rosenthal et al. 2017, Troudet et al. 2017, Gangwani and Landin 2018, Moore and Wilkie 2019).”
Managing Urban Waterbodies and Wetlands in Sunyani, Ghana
Asagadunga, P., Addaney, M., Anaafo, D., Akudugu, J. A., Ayee, D., & Abebrese, F. A. (2025) · International Review for Spatial Planning and Sustainable Development · doi:10.14246/irspsd.13.2_160 · Cited by 5
Ecology of Zoonotic Pathways Indicating Conflict and Mass Migration
Kruidbos, F. (2022) · Springer eBooks · doi:10.1007/978-3-030-94144-4_12 · Cited by 5
Mather, R., Chin, A., Rigby, C. L., Cooke, S. J., Fahmi, F., Haque, A. B., Mizrahi, M., & Grant, M. I. (2023) · Aquatic Conservation Marine and Freshwater Ecosystems · doi:10.1002/aqc.4039 · Cited by 5
“At present, freshwater vertebrate populations are considered to be declining at twice the rate of marine and terrestrial populations (McRae, Deinet & Freeman, 2017).”
BackgroundDeksne, M., van Bodegom, P. M., & Scherer, L. (2025) · Environmental Pollution · doi:10.1016/j.envpol.2025.126062 · Cited by 5
Lee, L., Oboňa, J., Lee, Y. X., Lee, K., Puniamoorthy, J., Tan, L. Y. K., Choo, R., Tan, D. J. X., Kwak, M. L., Ang, Y., et al. (2025) · Journal of Zoological Systematics & Evolutionary Research · doi:10.1155/jzs/8819646 · Cited by 5
Can a single index track the state of global biodiversity?
Jaspers, A. (2020) · Biological Conservation · doi:10.1016/j.biocon.2020.108524 · Cited by 5
Response of Freshwater Zooplankton Communities to Chronic Anthropogenic Noise
Rojas, E., Desjonquères, C., Agostini, S., Fiorini, S., Decencière, B., Danger, M., Felten, V., & Médoc, V. (2023) · Springer eBooks · doi:10.1007/978-3-031-10417-6_139-1 · Cited by 5
The systemic challenge of global heating
Baumann, F. (2018) · International Politics Reviews · doi:10.1057/s41312-018-0065-5 · Cited by 5
“Freshwater populations have declined by 81%, terrestrial populations by 38%, and marine populations by 36% (McRae et al, 2017; Warren et al, 2018).”
BackgroundTrends in Biodiversity: Vertebrates
Hoffmann, M., Brooks, T. M., Butchart, S. H. M., Gregory, R. D., & McRae, L. (2017) · Elsevier eBooks · doi:10.1016/b978-0-12-809665-9.09963-8 · Cited by 5
Self-citationImplementation of automated biodiversity monitoring lags behind its potential
King, R. A., & Halpern, B. S. (2025) · Environmental Research Letters · doi:10.1088/1748-9326/add02d · Cited by 9
“The Living Planet Index, one of the most comprehensive time-series of global species-level monitoring [11, 12], primarily uses data pieced together from disparate surveys with limited species coverage (mammals, birds, and amphibians).”
Kalogianni, E., Zogaris, S., Leris, I., Laschou, S., Zimmerman, B., Meek, S., Sargeant, S. L., Weldon, L., & Steer, M. D. (2023) · Environmental DNA · doi:10.1002/edn3.428 · Cited by 4
Wibowo, A., Kurniawan, K., Prakoso, V. A., Ginanjar, R., Rochman, F., Zamroni, M., Atminarso, D., Sumarto, B. K. A., Chadijah, A., Irawan, D., et al. (2024) · Aquatic Sciences · doi:10.1007/s00027-024-01128-0 · Cited by 4
“Freshwater resources and their biodiversity rank among the world’s most imperiled ecosystems (McGregor Reid 2013; Yousefi et al. 2020), with a faster rate of decline than terrestrial or marine ecosystems (McRae et al. 2017).”
Body mass and latitude predict the presence of multiple stressors in global vertebrate populationsPreprint
Noviello, N., McRae, L., Freeman, R., & Clements, C. F. (2020) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2020.12.17.423192 · Cited by 4
“This has resulted in the over-representation of well-studied regions and taxa, with research also inclined towards populations within protected areas and terrestrial ecosystems (McRae et al. 2017).”
BackgroundSelf-citationStability metrics behave predictably across data qualities but are sensitive to community size
O’Brien, D. A., & Clements, C. F. (2025) · Biological Conservation · doi:10.1016/j.biocon.2025.111191 · Cited by 3
Kurniawan, K., Wibowo, A., Prakoso, V. A., Chadijah, A., Astuti, S. S., Pratama, B. B., Nafiqoh, N., Haryono, H., Dahruddin, H., Surbani, I. L., et al. (2025) · Knowledge and Management of Aquatic Ecosystems · doi:10.1051/kmae/2025009 · Cited by 3
“Since 1970, wildlife populations have had a cumulative drop of 58% (McRae et al. , 2017).”
Biao, W. A. N. G., Yuqi, W. A. N. G., He, N., Mingxing, D. U., & You, P. (2024) · Integrative Zoology · doi:10.1111/1749-4877.12916 · Cited by 3
Keinath, S., Sommerwerk, N., Fienitz, M., & Freyhof, J. (2025) · Ecological Indicators · doi:10.1016/j.ecolind.2025.113223 · Cited by 4
OBSOLETE: Trends in biodiversity; Vertebrates
Hoffmann, M. (2017) · Elsevier eBooks · doi:10.1016/b978-0-12-409548-9.09963-2 · Cited by 3
Monitoring vertebrate abundance in Austria: developments over 30 years
Semmelmayer, K., & Hackländer, K. (2020) · Die Bodenkultur Journal of Land Management Food and Environment · doi:10.2478/boku-2020-0003 · Cited by 3
“Weighting, as was performed by McRae et al. (2017) for the global LPI, may counteract this problem if adequate coefficients can be defined for each class.”
BackgroundMethodResultInfluentialBeggel, S., Pander, J., & Geist, J. P. (2021) · Terrestrial environmental sciences · doi:10.1007/978-3-030-80234-9_2 · Cited by 3
Biodiversity Change: Past, Present, and Future
Purvis, A., & Isbell, F. (2022) · Wiley eBooks · doi:10.1002/9781119902911.ch1 · Cited by 3
Assessing the global impact of targeted conservation actions on species abundancePreprint
Blackburn, T. M., Dove, S., Geldmann, J., Gregory, R. D., Hoffmann, M., McRae, L., Visconti, P., & Jellesmark, S. (2023) · Research Square · doi:10.21203/rs.3.rs-2861352/v1 · Cited by 3
Self-citationGetachew, M., Mereta, S. T., Gebrie, G. S., Mulat, W. L., & Kelly‐Quinn, M. (2023) · Journal of Limnology · doi:10.4081/jlimnol.2023.2153 · Cited by 2
Population Variability and Apparent Recent Decline of River Birds in the Indian Himalaya
Sinha, A., Chatterjee, N., Ormerod, S. J., & Krishnamurthy, R. (2025) · Biotropica · doi:10.1111/btp.70017 · Cited by 1
“While longer term data may be needed to confirm the true pattern locally, population declines among river vertebrates are consistent with growing pressures on river environments from multiple sources (McRae et al. 2017).”
Robotic Environmental Monitoring Using Gelatin Hydrogels as a Biodegradable Adhesive
Geckeler, C., Heinrich, S., & Mintchev, S. (2025) · Advanced Intelligent Systems · doi:10.1002/aisy.202401030 · Cited by 2
A review of biodiversity threats and conservation strategies for Himalayan snow trout
Wanjari, R. N., Rashid, I., Abass, Z., RAMTEKE, K. K., Somasundharam, I., & Gul, S. (2026) · Discover Animals · doi:10.1007/s44338-025-00151-1 · Cited by 3
“The International Union for Conservation of Nature indicates that approximately one-third of assessed freshwater species are at risk of extinction, with freshwater vertebrate populations declining at twice the rate of their terrestrial or marine counterparts [54, 154].”
Oppenheimer, P., McRae, L., González‐Suárez, M., Hoffmann, M., & Freeman, R. (2026) · Ecological Indicators · doi:10.1016/j.ecolind.2026.115176 · Cited by 2
Self-citationCerrilla, C., Flemming, L., Griffiths, C. L., Impson, D., Jordaan, M. S., Kajee, M., Paxton, B. R., van der Walt, J. A., Whitehead, T. O., & Shelton, J. M. (2023) · Conservation Science and Practice · doi:10.1111/csp2.13065 · Cited by 2
“Since 1970, populations of freshwater vertebrates have declined by 83% (Almond et al., 2022) — more than twice the rate of their terrestrial and marine counterparts (McRae et al., 2017).”
Why Study Biodiversity in the Neotropics?
de Freitas, P. D., & Galetti, P. M. (2025) · Springer eBooks · doi:10.1007/978-3-031-83685-5_2 · Cited by 2
Wheeler, C., Davies, A. L., Andueza, L., Cole, L. E. S., Dávila, N., Pasquel, J. D. Á., Villacorta, M. D. A., Draper, F. C. H., Evans, C. L. D., Coronado, E. N. H., et al. (2025) · Journal of Environmental Management · doi:10.1016/j.jenvman.2025.126198 · Cited by 2
Keinath, S., Sommerwerk, N., Scuto, L., Nello, T., & Freyhof, J. (2025) · Ecological Indicators · doi:10.1016/j.ecolind.2025.114327 · Cited by 2
Currie, J., Ravoth, S. M., Marconi, V., McRae, L., Arce-Plata, M. I., Emry, S., Freeman, R., Jousse, M., Mével, G., Li, S., et al. (2026) · FACETS · doi:10.1139/facets-2025-0112 · Cited by 2
Self-citationMilton, R., Finlayson, C. M., & Davidson, N. C. (2023) · Elsevier eBooks · doi:10.1016/b978-0-12-817803-4.00008-5 · Cited by 2
Socioeconomics drive population change in the world’s largest carnivoresPreprint
Johnson, T. F., Isaac, N. J. B., Paviolo, A., & González‐Suárez, M. (2021) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2021.11.30.470341 · Cited by 2
Biases in vulture conservation literature in Africa
Daniels, J. K., Tamekloe, S. E., Monney, K. A., & Deikumah, J. P. (2025) · Ostrich · doi:10.2989/00306525.2025.2453675 · Cited by 1
“We used a method of weighted analysis to ensure proportional representation by species in both single-species and multiple-species studies (McRae et al. 2017; Roswell et al. 2021 ).”
The South African Living Planet Index Shows the Value of a Supposedly ‘Uninformative’ Indicator
Buschke, F., & von Staden, L. (2025) · Animal Conservation · doi:10.1111/acv.70014 · Cited by 1
“Central to this controversy is the Living Planet Index (LPI), a composite indicator of the average trends in the relative abundance of monitored populations of wild vertebrates (Loh et al. 2005; Collen et al. 2009; McRae et al. 2017).”
InfluentialAbundance of the endangered Indus River dolphin Platanista minor
Aisha, H., Khan, U., Arshad, M., Noureen, U., Akram, U., Mahar, J. A., Farooque, M., Usman, M., Brohi, M. A., & Braulik, G. T. (2025) · Endangered Species Research · doi:10.3354/esr01453 · Cited by 1
Corral‐Lou, A., Ramón‐Laca, A., Gallego, R., Alcaraz, L., Conejero, M., Díez‐Vives, C., Horton, A. L., Taboada, S., & Riesgo, A. (2026) · Environmental DNA · doi:10.1002/edn3.70293 · Cited by 1
How to reduce sampling error in species population monitoring: from theory to methods
Boyd, R. J., Jarvis, S., Meng, X., Powney, G. D., Spake, R., & Pescott, O. L. (2026) · Ecography · doi:10.1002/ecog.08103 · Cited by 1
Asian Elephant Futures: A Causal Layered Analysis with Gregory Bateson in Mind
Clemens, R. (2019) · World Futures Review · doi:10.1177/1946756719885661 · Cited by 1
“Extant human and elephant species have survived five natural mass extinctions (Barnosky et al. 2011; Ceballos et al. 2015; Ceballos et al. 2017; McRae et al. 2017).”
BackgroundEnvironmental sustainability in Asia
Le, T., Le, H.-C., & Nguyen, C. P. (2022) · Elsevier eBooks · doi:10.1016/b978-0-12-824084-7.00017-5 · Cited by 1
Osorio, A., Schmitt, L., Badariotti, D., & Meinard, Y. (2023) · VertigO · doi:10.4000/vertigo.40230 · Cited by 1
Creating a systematic prioritization of stream reaches for conservation of aquatic species
Kiser, A. H., Craig, C. A., Bonner, T. H., Littrell, B., Smith, C. H., Robertson, C. R., Wang, H., Grant, W. E., Johnson, M. S., Lopez, R. R., et al. (2024) · Ecosphere · doi:10.1002/ecs2.4772 · Cited by 1
Osorio, A., Schmitt, L., Badariotti, D., & Meinard, Y. (2024) · Environmental Conservation · doi:10.1017/s0376892924000055 · Cited by 1
Metadata
- Authors
- McRae, L., Deinet, S., & Freeman, R.
- Affiliations
- Zoological Society of London (GB)
- Corresponding author
- McRae, Louise
- Venue
- PLOS ONE
- Publisher
- Public Library of Science (PLoS)
- Published
- 2017-01-03
- Volume
- 12
- Issue
- 1
- Pages
- e0169156
- ISSN
- 1932-6203 (ISSN-L)
- PMC
- PMC5207715
- OpenAlex
- W2493835817
- Cited by
- 236
- References
- 37
- Citations by year
- 2026: 13 · 2025: 26 · 2024: 22 · 2023: 42 · 2022: 42 · 2021: 22 · 2020: 36 · 2019: 15 · 2018: 13 · 2017: 5
- FWCI
- 15.55
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- PLoS ONE (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- UCL Discovery (University College London) (submittedVersion)
- Figshare (submittedVersion, cc-by)
- Funders
- WWF International
- Topics
- Physical Sciences › Environmental Science › Nature and Landscape Conservation › Ecology and Vegetation Dynamics Studies
- Physical Sciences › Environmental Science › Ecology › Wildlife Ecology and Conservation
- Physical Sciences › Environmental Science › Global and Planetary Change › Conservation, Biodiversity, and Resource Management
- Keywords
- Living Planet Index, biodiversity indicators, taxonomic bias, geographic bias, vertebrates, freshwater biodiversity, marine biodiversity, terrestrial biodiversity, biogeographical realms, data coverage, biodiversity monitoring
- MeSH terms
- Animals, Conservation of Natural Resources, Fresh Water, Geography, International Cooperation, Marine Biology, Science, Species Specificity, Time Factors, Vertebrates, Databases, Factual, Ecosystem, Earth, Planet, Biodiversity
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