Spatial and seasonal variation in thermal sensitivity within North American bird species

Responses of wildlife to climate change are typically quantified at the species level, but physiological evidence suggests significant intraspecific variation in thermal sensitivity given adaptation to local environments and plasticity required to adjust to seasonal environments. Spatial and temporal variation in thermal responses may carry important implications for climate change vulnerability; for instance, sensitivity to extreme weather may increase in specific regions or seasons. Here, we leverage high-resolution observational data from eBird to understand regional and seasonal variation in thermal sensitivity for 20 bird species. Across their ranges, most birds demonstrated regional and seasonal variation in both thermal peak and range, or the temperature and range of temperatures of greatest occurrence. Some birds demonstrated constant thermal peaks or ranges  across their geographic distributions and while others varied according to local and current environmental conditions. Ac..., eBird dataset was obtained from the Cornell Lab of Ornithology. Similar dataset (organized differently, does not contain environmental information) availabile via www.ebird.org, Data was processed in R and RStudio, # Spatial and seasonal variation in thermal sensitivity within North American bird species

***

Responses of wildlife to climate change are typically quantified at the species level, but physiological evidence suggests significant intraspecific variation in thermal sensitivity given adaptation to local environments and plasticity required to adjust to seasonal environments. Spatial and temporal variation in thermal responses may carry important implications for climate change vulnerability; for instance, sensitivity to extreme weather may increase in specific regions or seasons. Here, we leverage high-resolution observational data from eBird to understand regional and seasonal variation in thermal sensitivity for 20 bird species. Across their ranges, most birds demonstrated regional and seasonal variation in both thermal peak and range, or the temperature and range of temperatures of greatest occurrence. Some birds demonstrated constant thermal peaks or ranges across their geographic d...

野生动物对气候变化的响应通常以物种水平进行量化，但生理学证据表明，鉴于对本地环境的适应以及为适应季节性环境所需的表型可塑性，热敏感性存在显著的种内变异。热响应的空间与时间变异可能对气候变化脆弱性产生重要影响；例如，对极端天气的敏感性可能在特定区域或季节升高。本研究利用来自eBird的高分辨率观测数据，探究20种鸟类热敏感性的区域与季节变异。在其分布范围内，多数鸟类的热峰值与热范围（即出现频率最高的温度及其温度区间）均表现出区域与季节变异。部分鸟类在其地理分布范围内表现出恒定的热峰值或热范围，而另一些则随本地及当前环境条件发生变化。此外，eBird数据集由康奈尔鸟类学实验室（Cornell Lab of Ornithology）提供。另有组织形式不同且未包含环境信息的同类数据集可通过www.ebird.org获取。数据通过R及RStudio进行处理。# 北美鸟类物种热敏感性的空间与季节变异
***
野生动物对气候变化的响应通常以物种水平进行量化，但生理学证据表明，鉴于对本地环境的适应以及为适应季节性环境所需的表型可塑性，热敏感性存在显著的种内变异。热响应的空间与时间变异可能对气候变化脆弱性产生重要影响；例如，对极端天气的敏感性可能在特定区域或季节升高。本研究利用来自eBird的高分辨率观测数据，探究20种鸟类热敏感性的区域与季节变异。在其分布范围内，多数鸟类的热峰值与热范围（即出现频率最高的温度及其温度区间）均表现出区域与季节变异。部分鸟类在其地理分布范围内表现出恒定的热峰值或热范围，而另一些则随本地及当前环境条件发生变化。[原文此处截断]