Distribution, status, and recent population dynamics of Alpine ibex Capra ibex in Europe,Mammal Review

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Distribution, status, and recent population dynamics of Alpine ibex Capra ibex in Europe
Mammal Review ( IF 4.3 ) Pub Date : 2020-04-20 , DOI: 10.1111/mam.12194
Alice Brambilla _{1,

2} , Achaz Von Hardenberg ₃ , Luca Nelli ₄ , Bruno Bassano ₂

Affiliation

1. Despite its recent successful and well-documented reintroduction history, a comprehensive and current update of the distribution and status of the Alpine ibex Capra ibex is lacking. As some concerns persist about its conservation, a status update appears essential for future conservation and management strategies on a large scale. 2. We provide an exhaustive update of the geographic range of the species, alongside estimates of its current abundance and population trends from 2004 to 2015. 3. We gathered census and distribution data for all the Alpine ibex colonies from management authorities and research groups that monitor them in different countries, and from the literature and publicly available reports. We produced a distribution map, reported the number of individuals observed in the most recent censuses, and estimated global, national, and local population trends using Bayesian hierarchical models. 4. Our model estimated that there were a total of 55297 Alpine ibex in the Alps in 2015 (lower 95% credible interval [CrI]: 51157; upper 95% CrI: 62710). The total number of individuals appears to have increased slightly over the last 10 years from the 47000-51000 estimated in previous reports. Positive population trends were observed in Switzerland and Italy, while no trend was apparent in France. For Austria, Germany, and Slovenia, there were insufficient data to estimate a trend. The slopes of the colonies’ trends were positively correlated with the year of colony foundation. 5. The geographic range of the Alpine ibex does not seem to have increased in size in recent years, although the accuracy of the spatial data varies among countries. 6. The periodic and standardised collection of census data for all colonies and a common policy of data sharing at a European level appear essential for monitoring the global trend of this species and for planning balanced conservation and management actions.

中文翻译：

欧洲高山山羊山羊山羊山羊的分布、现状和近期种群动态

1. 尽管最近重新引入成功且有据可查的历史，但缺乏对高山山羊山羊山羊的分布和状态的全面和最新的更新。由于对其保护的一些担忧持续存在，状态更新似乎对于未来大规模的保护和管理战略至关重要。2. 我们提供了该物种地理范围的详尽更新，以及对 2004 年至 2015 年当前丰度和种群趋势的估计。 3. 我们从管理当局和研究小组收集了所有高山野山羊群落的普查和分布数据在不同的国家，并从文献和公开报告中监测它们。我们制作了分布图，报告了最近一次人口普查中观察到的人数，并估计了全球、国家、和当地人口趋势使用贝叶斯分层模型。4. 我们的模型估计，2015 年阿尔卑斯山共有 55297 头高山野山羊（下 95% 可信区间 [CrI]：51157；上 95% CrI：62710）。过去 10 年中，总人数似乎略有增加，比之前报告中估计的 47000-51000 人有所增加。在瑞士和意大利观察到了积极的人口趋势，而在法国则没有明显的趋势。对于奥地利、德国和斯洛文尼亚，没有足够的数据来估计趋势。群落趋势的斜率与群落建立年份呈正相关。5. 尽管空间数据的准确性因国家而异，但近年来高山野山羊的地理范围似乎没有增加。6.

更新日期：2020-04-20

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