Assessing Suitable Habitats for Treefrog Species after Previous Declines in Costa Rica
Assessing Suitable Habitats for Treefrog Species after Previous Declines in Costa Rica
复制标题
评估哥斯达黎加树蛙物种先前数量下降后的适宜栖息地
DOI：
10.3390/d13110577
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
A. García‐Rodríguez
中科院分区：
文献类型：
--
作者：
Héctor Zumbado‐Ulate;C. Searle;G. Chaves;V. Acosta;Alexander Shepack;Stanley Salazar;A. García‐Rodríguez
树蛙占哥斯达黎加两栖动物物种的22%，但对这一组两栖动物的知识差距可能会阻碍保护工作。在这项研究中，我们首先更新了哥斯达黎加树蛙的状况，发现根据2019年世界自然保护联盟的最新评估，共有38%的树蛙物种受到威胁。此外，根据环境脆弱性评分，哥斯达黎加21%的树蛙物种面临灭绝的高度脆弱性。然后，我们预测了8个目标物种的历史气候适宜性，我们预计在过去20年中，它们的范围会发生变化。我们评估了自2000年以来新发生记录的位置，以确定恢复、范围扩大或以前由于方法学限制而低估的范围。利用适宜生境范围（ESH）和最小凸多边形面积（AMCP）两个指标对各物种的适宜生境面积进行了估算。六个下降的物种表现出恢复（即，2000年后在历史范围内出现的新情况），在Agalychnis anarium中发现了最广泛的恢复。我们还发现，在同域物种减少之后，拟斑峡蛙似乎已经扩散，并且拟斑峡蛙的分布范围扩大。苏基亚最初由于探测不足而被低估。我们发现，对于正在缓慢恢复的物种，ESH比AMCP小32-49%;然而，对于在其大部分范围内恢复的物种以及具有广泛范围的稀有物种，ESH与AMCP相似或更大。这项工作的结果可用于评估环境威胁的风险，并为保护目的确定区域的优先次序。
Treefrogs represent 22% of amphibian species in Costa Rica, but gaps in the knowledge about this group of amphibians can impede conservation efforts. In this study, we first updated the status of Costa Rican treefrogs and found that a total of 38% of treefrog species are threatened according to the most recent IUCN assessment in 2019. Additionally, 21% of Costa Rican treefrog species have a high vulnerability to extinction according to environmental vulnerability scores. Then, we predicted the historical climatic suitability of eight target species that we expected to have exhibited changes in their ranges in the last 20 years. We assessed the location of new occurrence records since 2000 to identify recovery, range expansion, or previously underestimated ranges due to methodological limitations. We also estimated the area of each species’ suitable habitat with two metrics: extent of suitable habitat (ESH) and area of minimum convex polygon (AMCP). Six declined species exhibited recovery (i.e., new occurrences across historical range after 2000), with the widest recovery found in Agalychnis annae. We also found that Isthmohyla pseudopuma appears to have spread after the decline of sympatric species and that the range of I. sukia was originally underestimated due to inadequate detection. We found that the ESH was 32–49% smaller than the AMCP for species that are slowly recovering; however, the ESH is similar or greater than the AMCP for species that are recovering in most of their ranges, as well as rare species with widespread ranges. Results of this work can be used to evaluate the risk of environmental threats and prioritize regions for conservation purposes.
影响因子：
5.9
作者：
Phillips, Steven J.;Anderson, Robert P.;Blair, Mary E.
通讯作者：
Blair, Mary E.