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- W4229367095 abstract "Abstract The largest remaining populations of the endangered huemul deer ( Hippocamelus bisulcus ) are believed to be concentrated in the remote, rugged and largely uninhabited glacial valleys and fjords surrounding the Southern Patagonian Ice Field that lie within Chile's Bernardo O'Higgins National Park. On the Park's northwestern edge is Bernardo Fjord, an area home to the world's largest known breeding population of huemul. We present a demographic study of this population and examine its population trends since 2004. We conducted huemul transect surveys on‐foot during 16 expeditions to Bernardo Fjord from October 2014 to March 2020, during which we spent a total of 254 days in the field and documented 284 observations of huemul. This coastal population of huemul exhibited higher female proportions (mean 0.64 ± SD 0.05), lower fawn:female ratios (mean 0.18 ± SD 0.23 in March and mean 0.22 ± SD 0.07 in November), and similar group sizes (mean 1.77 ± 1.06 SD individuals) to previous studies. Huemul densities in Bernardo Valley encountered from 2016 to 2019 were 60% lower than densities observed in a previous study from 2004 to 2008. We produce a 2019 huemul population estimate for Bernardo Fjord of 84 (±SD 7) individuals including 44 observed individuals and 40 (±SD 10) individuals estimated to be undetected by our surveys, which comprises 6–8% of the IUCN global population estimate. Two of the surveyed sectors – Bernardo Valley and Pampa – are of critical conservation importance, given that the 5 km 2 Pampa is home to 42% of the total huemul population and 41% of the fawn population of Bernardo Fjord. We examine potential drivers of this population decline, which may include poor recruitment, predation and high incidences of foot disease exacerbated by climatic conditions, and we offer recommendations for the conservation, monitoring and management of this and other coastal huemul populations." @default.
- W4229367095 created "2022-05-10" @default.
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- W4229367095 date "2022-05-09" @default.
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- W4229367095 title "Population decline and demography of the world’s largest breeding population of huemul deer ( <i>Hippocamelus bisulcus</i> ) in Bernardo O'Higgins National Park, Chile" @default.
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- W4229367095 doi "https://doi.org/10.1111/aec.13178" @default.
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