PDF(Pubmed)
Abstract：
Amphibians serve as reliable indicators of ecosystem health and are the most threatened group of vertebrates. Studies on their spatial distribution pattern and threats are crucial to formulate conservation strategies. Gongga Mountains, with a peak at 7509 m a.s.l. and running latitudinally, are in the center of the Hengduan Mountains Range and at the eastern steep edge of the Qinghai-Xizang Plateau, providing heterogeneous habitats and varied niches for amphibians. In this study, we combined 83 days of field work with information from 3894 museum specimens that were collected over the past 80 years, and identified twenty amphibian species belonging to seven families and twelve genera by morphology. Of these species, seven were listed in the threatened categories of the Red List of China\'s Biodiversity and thirteen were endemic to China. Ten species were found on the plateau side (western slope) and eleven species were found on the other side close to the Sichuan Basin (eastern slope). Only one species was found on both sides, indicating different community structures horizontally. The species richness was unimodal vertically and peaking at mid elevation on both sides, with the maximum number (ten vs. nine) of species occurring at 3300-3700 vs. 1700-1900 m a.s.l. and in different types of vegetation. The elevation span and body length of species distributed on both slopes did not show significant differences. These findings help to understand the horizontal and vertical distribution pattern of amphibian diversity, laying a foundation for future biogeographical and conservation research in this area.
摘要：
两栖动物是生态系统健康的可靠指标，是受威胁最大的脊椎动物群体。研究其空间分布格局和威胁对于制定保护策略至关重要。贡嘎山,a.s.l.有7509米的山峰，在纬度上运行，位于横断山脉的中心和青藏高原的东部陡峭边缘，为两栖动物提供异质栖息地和不同的生态位。在这项研究中,我们结合了83天的实地工作和过去80年收集的3894个博物馆标本的信息，并通过形态学鉴定了二十种两栖动物，属于七个科和十二个属。在这些物种中,7个被列入中国生物多样性红色名录的威胁类别，13个是中国特有的。在高原一侧（西坡）发现了10种，在靠近四川盆地的另一侧（东坡）发现了11种。两边只发现了一个物种,横向显示不同的群落结构。物种丰富度在垂直方向上是单峰的，并且在两侧的中海拔达到峰值。最大数量(十与9)发生在3300-3700的物种与1700-1900米a.s.l.和不同类型的植被。分布在两个斜坡上的物种的海拔跨度和体长没有显着差异。这些发现有助于理解两栖动物多样性的水平和垂直分布格局，为该领域未来的生物地理和保护研究奠定基础。
