Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 574

The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.

Pinpointing and preventing imminent extinctions

Open access
Ricketts, Taylor H., Dinerstein, Eric, Boucher, Tim, Brooks, Thomas M., Butchart, Stuart H. M., Hoffmann, Michael, Lamoreux, John F., Morrison, John, Parr, Mike, Pilgrim, John D., Rodrigues, Ana S. L., Sechrest, Wes, Wallace, George E., Berlin, Ken, Bielby, Jon, Burgess, Neil D., Church, Don R., Cox, Neil, Knox, David, Loucks, Colby, Luck, Gary W., Master, Lawrence L., Moore, Robin, Naidoo, Robin, Ridgely, Robert, Schatz, George E., Shire, Gavin, Strand, Holly, Wettengel, Wes, Wikramanayake, Eric·2005·Proceedings of the National Academy of Sciences

Abstract

Slowing rates of global biodiversity loss requires preventing species extinctions. Here we pinpoint centers of imminent extinction, where highly threatened species are confined to single sites. Within five globally assessed taxa (i.e., mammals, birds, selected reptiles, amphibians, and conifers), we find 794 such species, three times the number recorded as having gone extinct since 1500. These species occur in 595 sites, concentrated in tropical forests, on islands, and in mountainous areas. Their taxonomic and geographical distribution differs significantly from that of historical extinctions, indicating an expansion of the current extinction episode beyond sensitive species and places toward the planet's most biodiverse mainland regions. Only one-third of the sites are legally protected, and most are surrounded by intense human development. These sites represent clear opportunities for urgent conservation action to prevent species loss.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.0509060102

Cites

2 of 2 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 2 references

Cited by

See all 574

Metadata

Authors
Ricketts, T. H., Dinerstein, E., Boucher, T., Brooks, T. M., Butchart, S. H. M., Hoffmann, M., Lamoreux, J. F., Morrison, J., Parr, M., Pilgrim, J. D., Rodrigues, A. S. L., Sechrest, W., Wallace, G. E., Berlin, K., Bielby, J., Burgess, N. D., Church, D. R., Cox, N., Knox, D., Loucks, C., Luck, G. W., Master, L. L., Moore, R., Naidoo, R., Ridgely, R., Schatz, G. E., Shire, G., Strand, H., Wettengel, W., & Wikramanayake, E.
Venue
Proceedings of the National Academy of Sciences
Published
2005-12-12
Volume
102
Issue
51
Pages
18497-18501
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2123880245
Cited by
574
References
2
FWCI
19.89
Type
journal article
Language
en
Open access
green

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Pinpointing and preventing imminent extinctions. https://app.cochat.ai/papers/10.1073/pnas.0509060102
The paper
Ricketts, T. H., Dinerstein, E., Boucher, T., Brooks, T. M., Butchart, S. H. M., Hoffmann, M., Lamoreux, J. F., Morrison, J., Parr, M., Pilgrim, J. D., Rodrigues, A. S. L., Sechrest, W., Wallace, G. E., Berlin, K., Bielby, J., Burgess, N. D., Church, D. R., Cox, N., Knox, D., . . . Wikramanayake, E. (2005). Pinpointing and preventing imminent extinctions. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0509060102

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.