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The interaction of exposure and warming tolerance determines fish species vulnerability to warming stream temperatures

机译:暴露和变暖耐受性的相互作用决定了鱼类对变暖溪流温度的脆弱性

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摘要

Species vulnerability to climate change involves an interaction between the magnitude of change (exposure) and a species's tolerance to change. We evaluated fish species vulnerability to predicted stream temperature increases by examining warming tolerances across the Wyoming fish assemblage. Warming tolerance combines stream temperature with a thermal tolerance metric to estimate how much warming beyond current conditions a species can withstand. Brown trout, rainbow trout and burbot had the lowest warming tolerances and the highest proportion of currently occupied sites that will become unsuitable under predicted temperature increases. These most vulnerable species were coldwater species, but had neither the lowest thermal tolerances nor would they experience the greatest temperature increases. Our results highlight the importance of considering the interaction of exposure and warming tolerance when predicting climate change vulnerability and demonstrate an approach that can be applied broadly.
机译:物种对气候变化的脆弱性涉及变化幅度(暴露)与物种对变化的承受能力之间的相互作用。我们通过检查怀俄明州鱼群的变暖耐受性,评估了鱼类对预计溪流温度升高的脆弱性。耐温性将河流温度与热耐性指标结合在一起,以估算物种在当前条件下可以承受的升温量。褐鳟,虹鳟和Burbot的耐温性最低,当前占据的地点所占比例最高,在预计的温度升高下将变得不合适。这些最脆弱的物种是冷水物种,但既没有最低的耐热性,也不会经历最大的温度上升。我们的结果突出了在预测气候变化脆弱性时考虑暴露和耐温性相互作用的重要性,并证明了可广泛应用的方法。

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