Assessing the Extinction Probability of the Purple-winged Ground Dove, an Enigmatic Bamboo Specialist

Autor(es)

Lees, Alexander C. ^{[1, 2]} ; Devenish, Christian ^[1] ; Areta, Juan Ignacio ^[3] ; de Araujo, Carlos Barros ^{[4, 5]} ; Keller, Carlos ; Phalan, Ben ^[6] ; Silveira, Luis Fabio ^[7]

Afiliação do(s) autor(es)

^[1] Manchester Metropolitan Univ, Dept Nat Sci, Ecol & Environm Res Ctr EERC, Manchester, Lancs - England

^[2] Cornell Univ, Cornell Lab Ornithol, Ithaca, NY 14853 - USA

^[3] Consejo Nacl Invest Cient & Tecn, Inst Bio & Geociencias Noroeste Argentino IBIGEO, Lab Ecol Comportamiento & Sonidos Nat, Salta - Argentina

^[4] Univ Estadual Londrina, Programa Posgrad Ciencias Biol, Londrina, Parana - Brazil

^[5] Univ Fed Paraiba, Programa Posgrad Ecol & Monitoramento Ambiental, Ctr Ciencias Aplicadas & Educ, Rio Tinto - Brazil

^[6] Ctr Conservat Atlantic Forest Birds, Parque Aves, Foz Do Iguacu - Brazil

^[7] Univ Sao Paulo, Museu Zool, Secao Aves, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: FRONTIERS IN ECOLOGY AND EVOLUTION; v. 9, APR 29 2021.
• Citações Web of Science: 1

Resumo

The continued loss, fragmentation, and degradation of forest habitats are driving an extinction crisis for tropical and subtropical bird species. This loss is particularly acute in the Atlantic Forest of South America, where it is unclear whether several endemic bird species are extinct or extant. We collate and model spatiotemporal distributional data for one such ``lost{''} species, the Purple-winged Ground Dove Paraclaravis geoffroyi, a Critically Endangered endemic of the Atlantic Forest biome, which is nomadic and apparently dependent on masting bamboo stands. We compared its patterns of occurrence with that of a rare ``control{''} forest pigeon, the Violaceous Quail-Dove Geotrygon violacea, which occurs in regional sympatry. We also solicit information from aviculturists who formerly kept the species. We find that the two species share a similar historical recording rate but can find no documentary evidence (i.e., specimens, photos, video, sound recordings) for the persistence of Purple-winged Ground Dove in the wild after the 1980s, despite periodic sighting records, and after which time citizen scientists frequently documented the control species in the wild. Assessments of the probability that the species is extant are sensitive to the method of analysis, and whether records lacking documentary evidence are considered credible. Analysis of the temporal sequence of past records reveals the extent of the historical range contraction of the Purple-winged Ground Dove, while our species distribution model highlights the geographic search priorities for field ornithologists hoping to rediscover the species-aided by the first recording of the species vocalizations which we obtained from interviews with aviculturists. Our interviews also revealed that the species persisted in captivity from the 1970s until the 1990s (up to 150 birds), until a law was passed obstructing captive breeding efforts by private individuals, putting an end to perhaps the best chance we had to save the species from extinction. (AU)

• Processo FAPESP: 17/23548-2 - Avaliação, recuperação e conservação da fauna ameaçada de extinção do Centro de Endemismo Pernambuco (CEP)
• Beneficiário: Luís Fábio Silveira
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático