Distribution and habitat use of the endemic Yungas Guan Penelope bridgesi in the Southern Yungas of Argentina

IF 1.5 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION Bird Conservation International Pub Date : 2022-06-20 DOI:10.1017/S0959270921000563
Silvana Tejerina, Sofía Bardavid, N. Politi, J. Bernardos, A. Pidgeon, L. Rivera
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Abstract

Summary Identifying the factors that determine the spatial distribution and habitat use of species of conservation importance is essential to developing effective conservation and management strategies. As seed dispersers, guans play a key role in the regeneration of forests in South America and are threatened mainly by habitat loss and hunting pressure. The Yungas Guan Penelope bridgesi, an endemic species restricted to the Southern Yungas of Argentina and Bolivia, has been recently recognized as a separate species. To determine the conservation status of Yungas Guan, information on its distribution and habitat use is urgently needed. The objectives of our work were to 1) determine the potential distribution of the Yungas Guan in the Southern Yungas of Argentina and 2) assess the influence of environmental and anthropogenic covariables on habitat use of the species. We used records of Yungas Guan to model the potential distribution of the species with MaxEnt software and developed occupancy models to determine habitat use and influential elements of the landscape (puestos, urban areas, roads, rivers, and elevation). We obtained data on the presence of Yungas Guan with camera traps, with an effort of 6,990 camera trap-days. The total potential distribution of the species was 21,256 km2. We found that the habitat use by Yungas Guan increased with proximity to rivers and streams. The probability of habitat use was 0.27, with a range of 0.02–0.42. Of the total potential distribution area, 15,781 km2 (81%) had a probability of habitat use greater than 0.2. This study is the first in determining the potential distribution of Yungas Guan in the Southern Yungas of Salta and Jujuy provinces in Argentina and highlights the importance of conducting analyses with occupancy models to assess the influence of environmental and anthropogenic variables and threats to cracid species.
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阿根廷云冈南部特有云冈的分布和栖息地利用
确定决定重要保护物种空间分布和栖息地利用的因素对于制定有效的保护和管理战略至关重要。作为种子传播者,鸟粪在南美洲森林的再生中发挥着关键作用,主要受到栖息地丧失和狩猎压力的威胁。Yungas Guan Penelope bridgesi是一种局限于阿根廷和玻利维亚南部Yungas的特有物种,最近被确认为一个单独的物种。为了确定云加斯关的保护状况,迫切需要有关其分布和栖息地利用的信息。我们工作的目标是:1)确定阿根廷南部云冈的云冈关的潜在分布;2)评估环境和人为协变量对该物种栖息地利用的影响。我们使用Yungas Guan的记录,用MaxEnt软件对该物种的潜在分布进行建模,并开发占用模型来确定栖息地的使用和景观的影响因素(洞穴、城市区域、道路、河流和海拔)。我们获得了关于Yungas Guan存在相机陷阱的数据,花费了6990个相机陷阱日。该物种的总潜在分布面积为21256平方公里。我们发现Yungas Guan的栖息地利用随着河流和溪流的临近而增加。栖息地使用的概率为0.27,范围为0.02–0.42。在总的潜在分布区中,15781平方公里(81%)的栖息地使用概率大于0.2。这项研究首次确定了Yungas Guan在阿根廷Salta省和Jujuy省的南部Yungas的潜在分布,并强调了使用占有模型进行分析以评估环境和人为变量以及对cracid物种的威胁的重要性。
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来源期刊
CiteScore
3.40
自引率
6.20%
发文量
50
审稿时长
>12 weeks
期刊介绍: Bird Conservation International is a quarterly peer-reviewed journal that seeks to promote worldwide research and action for the conservation of birds and the habitats upon which they depend. The official journal of BirdLife International, it provides stimulating, international and up-to-date coverage of a broad range of conservation topics, using birds to illuminate wider issues of biodiversity, conservation and sustainable resource use. It publishes original papers and reviews, including targeted articles and recommendations by leading experts.
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