Data for: Responses to saltwater exposure vary across species, populations, and life-stages in anuran amphibians

To predict the impacts of environmental change on species, we must first understand the factors that limit the present-day ranges of species. Most anuran amphibians cannot survive at elevated salinities, which may drive their distribution in coastal locations. Previous research showed that coastal Hyla cinerea are locally adapted to brackish habitats in North Carolina (USA). Although Hyla squirella and Hyla chrysoscelis both inhabit coastal wetlands nearby, they have not been observed in saline habitats. We take advantage of naturally occurring microgeographic variation in coastal wetland occupancy exhibited by these congeneric treefrog species to explore how salt exposure affects oviposition site choice, hatching success, early tadpole survival, plasma osmolality, and tadpole body condition across coastal and inland locations. We observed higher survival among coastal H. cinerea tadpoles than inland H. cinerea, which corroborates previous findings. But contrary to expectations, coastal..., ,

为预测环境变化对物种的影响，我们首先需要明确限制物种当前分布范围的关键因素。多数无尾两栖类（anuran amphibians）无法在高盐环境中存活，这一特性可能会决定它们在沿海区域的分布格局。既往研究显示，美国北卡罗来纳州的北美绿树蛙（Hyla cinerea）已对咸淡水生境产生了本地适应性。尽管萨氏雨蛙（Hyla squirella）和美洲绿树蛙（Hyla chrysoscelis）均栖息于附近的滨海湿地，但尚未有在盐生生境中被观测到的记录。本研究利用上述同属树蛙物种在滨海湿地占用情况中自然存在的微地理变异，探究盐暴露对沿海与内陆种群在产卵位点选择、孵化成功率、蝌蚪早期存活率、血浆渗透压以及蝌蚪身体状况的影响。研究观测到，沿海种群的北美绿树蛙蝌蚪存活率显著高于内陆种群的北美绿树蛙蝌蚪，这一结果印证了既往研究结论。但与预期相悖的是，沿海……