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ESR

Endangered Species Research

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ESR is a gold Open Access research journal on all endangered forms of life on Earth, the threats faced by species and their habitats, and the necessary steps that must be undertaken to ensure their conservation.

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Online: ISSN 1613-4796

Print: ISSN 1863-5407

DOI: https://doi.org/10.3354/esr

Impact Factor2.6 (JCR 2026 release)

Article Acceptance Rate70% (2025)

Median Time in Review165.5 days (2025)

Total Annual Downloads227.591 (2026)

(2019) Vol. 38 - Table of contents

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RESEARCH ARTICLE Cuevas JM, García M, Hozbor N, Faria VV, Paesch L Tracing the occurrence of the Critically Endangered smalltooth sawfish Pristis pectinata at its southernmost distribution in the Southwest Atlantic OceanSpecial No. 19open accessPages 1-9DOI: https://doi.org/10.3354/esr00932Photograph of a smalltooth sawfish with an archival tag. The sawfish apperars greenish in front of a black background.RESEARCH ARTICLE Rojas-Bracho L, Gulland FMD, Smith CR, Taylor B, Wells RS, Thomas PO, Bauer B, Heide-Jørgensen MP, Teilmann J, Dietz R, Balle JD, Jensen MV, Sinding MHS, Jaramillo-Legorreta A, Abel G, Read AJ, Westgate AJ, Colegrove K, Gomez F, Martz K, Rebolledo R, Ridgway S, Rowles T, van Elk CE, Boehm J, Cardenas-Hinojosa G, Constandse R, Nieto-Garcia E, Phillips W, Sabio D, Sanchez R, Sweeney J, Townsend F, Vivanco J, Vivanco JC, Walker S A field effort to capture critically endangered vaquitas Phocoena sinus for protection from entanglement in illegal gillnetsSpecial No. 23open accessPages 11-27DOI: https://doi.org/10.3354/esr00931Gannet caught in a fishernet photographed on board a boat.RESEARCH ARTICLE Littles CJ, Bonde RK, Reid JP, Jacoby CA, Notestein SK, Reid JP, Jr, Frazer TK Coastal habitat change and marine megafauna behavior: Florida manatees encountering reduced food provisions in a prominent winter refugeopen accessPages 29-43DOI: https://doi.org/10.3354/esr00933RESEARCH ARTICLE Usategui-Martín A, Liria-Loza A, Miller JD, Medina-Suárez M, Jiménez-Bordón S, Pérez-Mellado V, Montero D Effects of incubation temperature on hatchling performance and phenotype in loggerhead sea turtle Caretta carettaopen accessPages 45-53DOI: https://doi.org/10.3354/esr00935RESEARCH ARTICLE Chilvers BL Whisker stable isotope values indicate long-term foraging strategies for female New Zealand sea lionsopen accessPages 55-66DOI: https://doi.org/10.3354/esr00934RESEARCH ARTICLE Basran CJ, Bertulli CG, Cecchetti A, Rasmussen MH, Whittaker M, Robbins J First estimates of entanglement rate of humpback whales Megaptera novaeangliae observed in coastal Icelandic watersSpecial No. 23open accessPages 67-77DOI: https://doi.org/10.3354/esr00936Gannet caught in a fishernet photographed on board a boat.RESEARCH ARTICLE Cooper NW, Ewert DN, Wunderle JM Jr, Helmer EH, Marra PP Revising the wintering distribution and habitat use of the Kirtland’s warbler using playback surveys, citizen scientists, and geolocatorsopen accessPages 79-89DOI: https://doi.org/10.3354/esr00937RESEARCH ARTICLE Jounela P, Sipilä T, Koskela J, Tiilikainen R, Auttila M, Niemi M, Kunnasranta M Incidental bycatch mortality and fishing restrictions: impacts on juvenile survival in the Endangered Saimaa ringed seal Pusa hispida saimensisSpecial No. 23open accessPages 91-99DOI: https://doi.org/10.3354/esr00939Gannet caught in a fishernet photographed on board a boat.RESEARCH ARTICLE Ganley LC, Brault S, Mayo CA What we see is not what there is: estimating North Atlantic right whale Eubalaena glacialis local abundanceopen accessPages 101-113DOI: https://doi.org/10.3354/esr00938REVIEW Zollett EA, Swimmer Y Safe handling practices to increase post-capture survival of cetaceans, sea turtles, seabirds, sharks, and billfish in tuna fisheriesSpecial No. 23open accessPages 115-125DOI: https://doi.org/10.3354/esr00940Gannet caught in a fishernet photographed on board a boat.RESEARCH ARTICLE Kameda K, Suzuki K, Kuroyanagi K, Takase M, Matsuda K, Noda J Comparison of green turtle Chelonia mydas sex ratios at two time-points over 20 years at a foraging ground in Yaeyama Islands, Ryukyu Archipelago, Japanopen accessPages 127-134DOI: https://doi.org/10.3354/esr00944RESEARCH ARTICLE Lennox RJ, Filous A, Cooke SJ, Danylchuk AJ Substantial impacts of subsistence fishing on the population status of an Endangered reef predator at a remote coral atollopen accessPages 135-145DOI: https://doi.org/10.3354/esr00942OPINION PIECE Hammerschlag N Quantifying shark predation effects on prey: dietary data limitations and study approachesopen accessPages 147-151DOI: https://doi.org/10.3354/esr00950NOTE Shephard S, Wögerbauer C, Green P, Ellis JR, Roche WK Angling records track the near extirpation of angel shark Squatina squatina from two Irish hotspotsopen accessPages 153-158DOI: https://doi.org/10.3354/esr00943RESEARCH ARTICLE Muntifering JR, Ditmer MA, Stapleton S, Naidoo R, Harris TH Hartmann’s mountain zebra resource selection and movement behavior within a large unprotected landscape in northwest NamibiaSpecial No. 22open accessPages 159-170DOI: https://doi.org/10.3354/esr00941A biologging device being fixed on a turtle's back by two people at night.NOTE Clua E, Bessudo S, Caselle JE, Chauvet C, Jost C, Friedlander AM Population assessment of the endemic angelfish Holacanthus limbaughi from Île de La Passion-Clipperton Atoll (Tropical Eastern Pacific)open accessPages 171-176DOI: https://doi.org/10.3354/esr00947RESEARCH ARTICLE Esquible J, Atkinson S Stranding trends of Steller sea lions Eumetopias jubatus 1990–2015open accessPages 177-188DOI: https://doi.org/10.3354/esr00945RESEARCH ARTICLE Sergio F, Tanferna A, Chicano J, Blas J, Tavecchia G, Hiraldo F Protected areas under pressure: decline, redistribution, local eradication and projected extinction of a threatened predator, the red kite, in Doñana National Park, Spainopen accessPages 189-204DOI: https://doi.org/10.3354/esr00946
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