Precipitation and temperature primarily determine the reptile distributions in China,Ecography

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Precipitation and temperature primarily determine the reptile distributions in China
Ecography ( IF 5.4 ) Pub Date : 2024-08-30 , DOI: 10.1111/ecog.07005
Chunrong Mi _{1,

2} , Xingzhi Han ₃ , Zhongwen Jiang ₃ , Zhigao Zeng ₃ , Weiguo Du ₃ , Baojun Sun ₃

Affiliation

Reptiles make up one-third of tetrapods, however they are often omitted from global conservation analyses. Understanding the determinants of reptile distribution is the foundation for reptile conservation research. We assembled a dataset on the distribution of 231 reptile species (nearly 50% of recorded species in China). We then investigated the association of species range filling (the proportion of observed ranges compared to species potential climate distributions) with climate, range size, topography and human activity, using three regression methods. At the species level, we found the most primary factors influencing the recent distribution pattern of reptiles across China were the mean annual precipitation (MAP) and the mean annual temperature (MAT). In contrast, human activity came in last. Similarly, at a spatial level, MAP and MAT were still the most important factors. Geographically, the south and east of China support the highest reptile diversity, partially due to high precipitation. Contrary to the prevailing notion that reptile distributions are primarily shaped by human activities, our study re-emphasizes the importance of climate in determining reptile distribution. It accentuates the necessity of integrating climate variables into future animal conservation strategies in China. Our findings also offer valuable insights for informing conservation practices, including the site planning of natural reserves and national parks, as well as monitoring of environmental factors in protected areas.

更新日期：2024-08-30

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