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Título: | Direct evidence of poison-driven widespread population decline in a wild vertebrate |
Autor: | Mateo-Tomás, Patricia CSIC ORCID; Olea, Pedro P. CSIC ORCID; Mínguez, Eva; Mateo, Rafael CSIC ORCID ; Viñuela, Javier CSIC ORCID | Palabras clave: | Wildlife poisoning Population dynamics Sentinel species On-ground monitoring |
Fecha de publicación: | 2020 | Editor: | National Academy of Sciences (U.S.) | Citación: | Proceedings of the National Academy of Sciences of the USA 117(28): 16418-16423 (2020) | Resumen: | Toxicants such as organochlorine insecticides, lead ammunition, and veterinary drugs have caused severe wildlife poisoning, pushing the populations of several apex species to the edge of extinction. These prime cases epitomize the serious threat that wildlife poisoning poses to biodiversity. Much of the evidence on population effects of wildlife poisoning rests on assessments conducted at an individual level, from which population-level effects are inferred. Contrastingly, we demonstrate a straightforward relationship between poison-induced individual mortality and population changes in the threatened red kite (Milvus milvus). By linking field data of 1,075 poisoned red kites to changes in occupancy and abundance across 274 sites (10 × 10-km squares) over a 20-y time frame, we show a clear relationship between red kite poisoning and the decline of its breeding population in Spain, including local extinctions. Our results further support the species listing as endangered, after a breeding population decline of 31% to 43% in two decades of this once-abundant raptor. Given that poisoning threatens the global populations of more than 2,600 animal species worldwide, a greater understanding of its population-level effects may aid biodiversity conservation through increased regulatory control of chemical substances. Our results illustrate the great potential of long-term and large-scale on-ground monitoring to assist in this task. | Versión del editor: | https://doi.org/10.1073/pnas.1922355117 | URI: | http://hdl.handle.net/10261/221452 | DOI: | 10.1073/pnas.1922355117 | ISSN: | 0027-8424 | E-ISSN: | 1091-6490 |
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