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Caughley, G. 1994. Directions in conservation biology. Journal of Animal Ecology 63: 215–24. https://doi.org/10.2307/5542 The classic overview of the challenges faced by small and declining populations.
Ceballos, G., P.R. Ehrlich, and R. Dirzo. 2017. Biological annihilation via the ongoing sixth mass extinction signaled by vertebrate population losses and declines. Proceedings of the National Academy of Sciences 114: E6089–E6096. https://doi.org/10.1073/pnas.1704949114 Extinctions by the numbers.
IBPES. 2019. Nature’s dangerous decline ‘unprecedented’: Species extinction rates accelerating. IBPES media release. https://www.ipbes.net/news/Media-Release-Global-Assessment We are in the midst of a biodiversity crisis.
IUCN. 2012. IUCN Red List Categories and Criteria: v. 3.1 (Gland: IUCN). https://portals.iucn.org/library/sites/library/files/documents/RL-2001-001-2nd.pdf A summary of the IUCN Red List classifications.
Jones, H.P. 2010. Seabird islands take mere decades to recover following rat eradication. Ecological Applications 20: 2075–80. https://doi.org/10.1890/10-0118.1 Control of invasive species can be an effective method to achieve recovery of threatened species.
Koh, L.P., R.R. Dunn, N.S. Sodhi, et al. 2004. Species coextinctions and the biodiversity crisis. Science 305: 1632–34. https://doi.org/10.1126/science.1101101 Thousands of species face extinction due to the decoupling of important symbiotic relationships.
McClenachan, L., A.B. Cooper, K.E. Carpenter, et al. 2012. Extinction risk and bottlenecks in the conservation of charismatic marine species. Conservation Letters 5: 73–80. https://doi.org/10.1111/j.1755-263X.2011.00206.x Most marine species have not been evaluated for their risk of extinction.
Stearns, B.P., and S.C. Stearns. 2010. Still watching, from the edge of extinction. BioScience 60: 141–46. https://doi.org/10.1525/bio.2010.60.2.8 Many threatened species increasingly rely on human actions to avoid extinction.
Tranquilli, S., M. Abedi-Lartey, F. Amsini, et al. 2012. Lack of conservation effort rapidly increases African great ape extinction risk. Conservation Letters 5: 48–55. https://doi.org/10.1111/j.1755-263X.2011.00211.x Neglecting species in conservation need increases extinction risk.