Extinctions of anuran amphibians are more alarming compared to all other vertebrates. Several reports of declines come from Atlantic Forest, which currently holds only 1.62% of natural vegetation under full protection. However, despite this degradation, the Atlantic Forest still shelters a great diversity of anurans with a high diversity of specific ecological characteristics. Thus, our objective was to identify which ecological characteristics of anurans from the Atlantic Forest can be associated to this extinction risk, in order to understand how these characteristics can promote the species persistence against environmental disturbance. For each species, we gathered biological/ecological characteristics from literature, as well the extinction risk based on the National List of Endangered Species of Wildlife. In 2015, 547 anuran species had been assigned to the Atlantic Forest, of which 406 had their extinction risk defined. However, we considered only 295 species in our analyses due to the availability of biological/ecological information. We observed that the clutch size and the altitudinal distribution are related to the extinction risk of anurans. Threatened species had a small clutch size and were distributed in low or high areas, whereas non-threatened species had a larger clutch size and were distributed in intermediate altitude areas. Studies that investigate ecological characteristics that determine the extinction risk of species can be useful to assist conservation actions, concentrating efforts to species more sensitive to environmental alterations, besides highlighting the importance of natural history and the ecology of organisms in conservation decisions.

中文翻译：

---

巴西大西洋森林无尾目动物的生态特征与其灭绝风险之间是否存在关联？

与所有其他脊椎动物相比，无尾两栖动物的灭绝更加令人担忧。大西洋森林目前仅拥有 1.62% 的自然植被受到全面保护。然而，尽管这种退化，大西洋森林仍然庇护着具有高度多样性特定生态特征的大量无尾目动物。因此，我们的目标是确定大西洋森林无尾目动物的哪些生态特征与这种灭绝风险有关，以了解这些特征如何促进物种对环境干扰的持久性。对于每个物种，我们从文献中收集生物/生态特征，以及基于国家濒危野生动物物种名录的灭绝风险。2015 年，大西洋森林中有 547 种无尾目物种，其中 406 种已确定灭绝风险。然而，由于生物/生态信息的可用性，我们在分析中只考虑了 295 个物种。我们观察到离合器大小和海拔分布与无尾目灭绝风险有关。受威胁物种的离合器尺寸较小，分布在低海拔或高海拔地区，而非受威胁物种的离合器尺寸较大，分布在中海拔地区。调查决定物种灭绝风险的生态特征的研究有助于保护行动，将努力集中在对环境变化更敏感的物种上，