Replicating research in ecology and evolution: feasibility, incentives, and the cost-benefit conundrum
Open accessAbstract
We believe that replicating studies in ecology and evolution is extremely valuable, but replication within species and systems is troublingly rare, and even 'quasi-replications' in different systems are often insufficient. We make a case for supporting multiple types of replications and point out that the current incentive structure needs to change if ecologists and evolutionary biologist are to value scientific replication sufficiently.
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.
Integrity signals
Registry
Cites
Statistics
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.
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?
The tautological structure of the Kauffman and Cummings model invalidates Ripple et al.'s analysis because applying it violates the principle that conclusions must be supported by evidence independent of the data used to generate them.
“The tautological structure of the Kauffman and Cummings model invalidates Ripple et al.'s analysis because applying it violates the scientific principle that conclusions must be supported by evidence that is independent of the data used to generate them (Hurlbert 1984; Nakagawa & Parker 2015).”
From Flawed analysis invalidates claim of a strong Yellowstone trophic cascade after wolf reintroduction: A comment on Ripple et al. (2025) (2025) · cites this paper as Nakagawa & Parker 2015
The sections “What role should replication play in evolution and ecology?” and “Scientific replication and generality” argue that separate replications strengthen confidence in findings and help assess validity. They do not discuss the Kauffman and Cummings model or Ripple et al.’s analysis, nor do they state a categorical rule that using the same data to develop and support a conclusion invalidates it. The paper supports the general value of independent testing, but not the specific methodological judgment attributed to it. (LLM, conf=0.84)
Experimental — accuracy not yet measured
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Cites
Estimating the reproducibility of psychological science
Open Science Collaboration (2015) · Science · doi:10.1126/science.aac4716 · Cited by 8,515 · see citing works
Simmons, J. P., Nelson, L. D., & Simonsohn, U. (2011) · Psychological Science · doi:10.1177/0956797611417632 · Cited by 6,567 · see citing works
Raise standards for preclinical cancer research
Begley, C. G., & Ellis, L. M. (2012) · Nature · doi:10.1038/483531a · Cited by 2,979 · see citing works
Promoting an open research culture
Nosek, B. A., Alter, G., Banks, G. C., Borsboom, D., Bowman, S. D., Breckler, S. J., Buck, S., Chambers, C. D., Chin, G., Christensen, G., et al. (2015) · Science · doi:10.1126/science.aab2374 · Cited by 2,708 · see citing works
P-curve: A key to the file-drawer.
Simonsohn, U., Nelson, L. D., & Simmons, J. P. (2014) · Journal of Experimental Psychology: General · doi:10.1037/a0033242 · Cited by 1,500 · see citing works
The Extent and Consequences of P-Hacking in Science
Head, M. L., Holman, L., Lanfear, R., Kahn, A. T., & Jennions, M. D. (2015) · PLOS Biology · doi:10.1371/journal.pbio.1002106 · Cited by 1,388 · cited 1× · see citing works
“of freedom’ [20] seems pervasive across many scientific fields [21].”
BackgroundHandbook of Meta-analysis in Ecology and Evolution
(2013) · doi:10.1515/9781400846184 · Cited by 1,183 · see citing works
Shall we Really do it Again? The Powerful Concept of Replication is Neglected in the Social Sciences
Schmidt, S. (2009) · Review of General Psychology · doi:10.1037/a0015108 · Cited by 1,125 · see citing works
<i>p</i> -Curve and Effect Size: Correcting for Publication Bias Using Only Significant Results
Simonsohn, U., Nelson, L. D., & Simmons, J. P. (2014) · Perspectives on Psychological Science · doi:10.1177/1745691614553988 · Cited by 717 · see citing works
Registered Reports: A Method to Increase the Credibility of Published Results
Nosek, B. A., & Lakens, D. (2014) · Social Psychology · doi:10.1027/1864-9335/a000192 · Cited by 716 · see citing works
Flagged first, then by citations
Research works printed but not linked: 21
- [2]Carpenter S Psychology’s bold initiative Science 2012 335 1558 61 10.1126/science.335.6076.1558 22461583 · DOI
- [3]Klein RA Ratliff KA Vianello M Adams RB Jr Bahník Š Bernstein MJ Investigating variation in replicability Soc Psychol Germany 2014 45 142 52 10.1027/1864-9335/a000178 · DOI · Paper page
- [5]Seguin A Forstmeier W No band color effects on male courtship rate or body mass in the zebra finch: four experiments and a meta-analysis PLoS One 2012 7 10.1371/journal.pone.0037785 22685545 PMC3369886 · DOI
- [6]Parker TH What do we really know about the signalling role of plumage colour in blue tits? A case study of impediments to progress in evolutionary biology Biol Rev 2013 88 511 36 10.1111/brv.12013 23279555 · DOI
- [7]Jennions MD Moller AP Relationships fade with time: a meta-analysis of temporal trends in publication in ecology and evolution Proc Biol Sci 2002 269 43 8 10.1098/rspb.2001.1832 11788035 PMC1690867 · DOI
- [8]Jennions MD Moller AP Publication bias in ecology and evolution: an empirical assessment using the ‘trim and fill’ method Biol Rev 2002 77 211 22 10.1017/S1464793101005875 12056747 · DOI
- [9]Palmer AR Quasi-replication and the contract of error: lessons from sex ratios, heritabilities and fluctuating asymmetry Annu Rev Ecol Syst 2000 31 441 80 10.1146/annurev.ecolsys.31.1.441 · DOI · Paper page
- [10]Kelly CD Replicating empirical research in behavioral ecology: How and why it should be done but rarely ever is Q Rev Biol 2006 81 221 36 10.1086/506236 17051829 · DOI
- [12]Chan KMA Value and advocacy in conservation biology: Crisis discipline or discipline in crisis ? Conserv Biol 2008 22 1 3 10.1111/j.1523-1739.2007.00869.x 18254846 · DOI
- [13]Clutton-Brock T Sheldon BC Individuals and populations: the role of long-term, individual-based studies of animals in ecology and evolutionary biology Trends Ecol Evol 2010 25 562 73 10.1016/j.tree.2010.08.002 20828863 · DOI
- [15]Nakagawa S Poulin R Meta-analytic insights into evolutionary ecology: an introduction and synthesis Evol Ecol 2012 26 1085 99 10.1007/s10682-012-9593-z · DOI · Paper page
- [18]Korsten P Dijkstra TH Komdeur J Is UV signalling involved in male-male territorial conflict in the blue tit (Cyanistes caeruleus)? A new experimental approach Behaviour 2007 144 447 70 10.1163/156853907780756030 · DOI
- [19]Remy A Gregoire A Perret P Doutrelant C Mediating male-male interactions: the role of the UV blue crest coloration in blue tits Behav Ecol Sociobiol 2010 64 1839 47 10.1007/s00265-010-0995-z · DOI
- [23]Siepielski AM DiBattista JD Carlson SM It’s about time: the temporal dynamics of phenotypic selection in the wild Ecol Lett 2009 12 1261 76 10.1111/j.1461-0248.2009.01381.x 19740111 · DOI
- [24]Morrissey M Hadfield J Directional selection in temporally replicated studies is remarkably consistent Evol Int J Org Evol 2012 66 435 42 10.1111/j.1558-5646.2011.01444.x 22276539 · DOI
- [25]Tian X Azpurua J Hine C Vaidya A Myakishev-Rempel M Ablaeva J High-molecular-mass hyaluronan mediates the cancer resistance of the naked mole rat Nature 2013 499 346 U122 10.1038/nature12234 23783513 PMC3720720 · DOI
- [27]McNutt M Journals unite for reproducibility Science 2014 346 679 10.1126/science.aaa1724 25383411 · DOI
- [28]Simons DJ Holcombe AO Spellman BA An introduction to registered replication reports at perspectives on psychological science Perspect Psychol Sci 2014 9 552 5 10.1177/1745691614543974 26186757 · DOI
- [30]Endler JA Writing scientific papers, with special reference to evolutionary ecology Evol Ecol 2015 29 465 78 10.1007/s10682-015-9773-8 · DOI
- [31]Kelly CD Jennions MD The h index and career assessment by numbers Trends Ecol Evol 2006 21 167 70 10.1016/j.tree.2006.01.005 16701079 · DOI
- [32]Westneat DF Bokony V Burke T Chastel O Jensen H Kvalnes T Multiple aspects of plasticity in clutch size vary among populations of a globally distributed songbird J Anim Ecol 2014 83 876 87 10.1111/1365-2656.12191 24286484 · DOI
Cited by
Sorted by citations
Detecting and avoiding likely false‐positive findings – a practical guide
Forstmeier, W., Wagenmakers, E., & Parker, T. H. (2017) · Biological Reviews · doi:10.1111/brv.12315 · Cited by 436 · see citing works
Self-citationQuestionable research practices in ecology and evolution
Fraser, H., Parker, T., Nakagawa, S., Barnett, A., & Fidler, F. (2018) · PLOS ONE · doi:10.1371/journal.pone.0200303 · Cited by 346 · see citing works
Self-citationTransparency in Ecology and Evolution: Real Problems, Real Solutions
Parker, T. H., Forstmeier, W., Koricheva, J., Fidler, F., Hadfield, J. D., Chee, Y. E., Kelly, C. D., Gurevitch, J., & Nakagawa, S. (2016) · Trends in Ecology & Evolution · doi:10.1016/j.tree.2016.07.002 · Cited by 201 · see citing works
Self-citationMacNulty, D. R., Cooper, D., Procko, M., & Clark-Wolf, T. J. (2025) · Global Ecology and Conservation · doi:10.1016/j.gecco.2025.e03899 · Cited by 1 · see citing works
“The tautological structure of the Kauffman and Cummings model invalidates Ripple et al. ’ s analysis because applying it violates the scientific principle that conclusions must be supported by evidence that is independent of the data used to generate them (Hurlbert, 1984; Nakagawa and Parker, 2015).”
MacNulty, D., Cooper, D., Procko, M., & Clark-Wolf, T. (2025) · doi:10.32942/x2qq0c
- Authors
- Nakagawa, S., & Parker, T. H.
- Affiliations
- UNSW Sydney (AU)
- Whitman College (US)
- Corresponding author
- Nakagawa, Shinichi
- ORCID
- Nakagawa, Shinichi
- Venue
- BMC Biology
- Published
- 2015-10-28
- Volume
- 13
- Issue
- 1
- Pages
- 88-88
- ISSN
- 1741-7007 (ISSN-L)
- PMC
- PMC4624660
- OpenAlex
- W1848063219
- Cited by
- 110
- References
- 10
- Citations by year
- 2026: 2 · 2025: 4 · 2024: 11 · 2023: 10 · 2022: 6 · 2021: 16 · 2020: 17 · 2019: 11 · 2018: 13 · 2017: 11 · 2016: 9
- FWCI
- 3.59
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- BMC Biology (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Funders
- Australian Research Council (FT130100268)
- Topics
- Social Sciences › Decision Sciences › Information Systems and Management › Academic Publishing and Open Access
- Physical Sciences › Computer Science › Information Systems › Research Data Management Practices
- Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
- Keywords
- replication, ecology, evolution, research incentives, research funding
- MeSH terms
- Cost-Benefit Analysis, Ecology, Biological Evolution, Genetic Techniques, Research Design
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