Rates of warming and the global sensitivity of shallow water marine invertebrates to elevated temperature
Rates of warming and the global sensitivity of shallow water marine invertebrates to elevated temperature
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DOI：
10.1017/s0025315414000307
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发表时间：
2016-02-01
影响因子：
1.2
通讯作者：
Peck, L. S.
中科院分区：
文献类型：
--
作者：
Morley, S. A.;Bates, A. E.;Peck, L. S.
评估外温动物对其环境变化的敏感性是一项关键挑战，特别是在地球表面迅速变暖的情况下。比较来自不同区域的物种在不同变暖速率下的温度上限，最近被开发为一种估计浅海动物长期敏感性的方法。本文介绍了四个热带Ascension岛，五个温带新西兰和六个南极麦克默多湾物种的第一个初步数据。这三个组合的斜率和截距适合的整体模式，以前测得的组合高温耐受性在热带动物群和浅坡，低温耐受性和南极动物群的陡坡。尽管热带海洋Ascension受到上升流事件，适合的整体组合模式内的截距和斜率表明，上升流是足够的可预测的动物群已经进化的可塑性作出反应。这与以前分析的物种从秘鲁涌升区，其中有一个陡峭的坡度比其他温带动物。动物群适应其生理的速度和能力很可能决定升温速率关系的形状，并将成为支撑气候变暖脆弱性的一个关键机制。
Assessing the sensitivity of ectotherms to variability in their environment is a key challenge, especially in the face of rapid warming of the Earth's surface. Comparing the upper temperature limits of species from different regions, at different rates of warming, has recently been developed as a method to estimate the long term sensitivity of shallow marine fauna. This paper presents the first preliminary data from four tropical Ascension Island, five temperate New Zealand and six Antarctic McMurdo Sound species. The slopes and intercepts of these three assemblages fitted within the overall pattern for previously measured assemblages from high temperature tolerance in tropical fauna and a shallow slope, to low temperature tolerance and a steep slope in Antarctic fauna. Despite the tropical oceanic Ascension Island being subject to upwelling events, the fit of the intercept and slope within the overall assemblage pattern suggests that the upwelling is sufficiently predictable for the fauna to have evolved the plasticity to respond. This contrasts with previously analysed species from the Peruvian upwelling region, which had a steeper slope than other temperate fauna. The speed and capacity of faunal assemblages to acclimatize their physiology is likely to determine the shape of the rates of warming relationship, and will be a key mechanism underpinning vulnerability to climate warming.