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A Global Pattern of Thermal Adaptation in Marine Phytoplankton

zhangxia111 添加于 2012/10/29 13:45:45  868次阅读 | 0次推荐 | 0个评论

Rising ocean temperatures will alter the productivity and composition of marine phytoplankton communities, thereby affecting global biogeochemical cycles. Predicting the effects of future ocean warming on biogeochemical cycles depends critically on understanding how existing global temperature variation affects phytoplankton. Here, we show that variation in phytoplankton temperature optima over 150 degrees of latitude is well explained by a gradient in mean ocean temperature. An eco-evolutionary model predicts a similar relationship, suggesting that this pattern is the result of evolutionary adaptation. Using mechanistic species distribution models, we find that rising temperatures this century will cause poleward shifts in species' thermal niches and a sharp decline in tropical phytoplankton diversity in the absence of an evolutionary response.

作 者:Mridul K. Thomas, Colin T. Kremer, Christopher A. Klausmeier, Elena Litchman
期刊名称: Science
期卷页: 第卷 第期 ~页
学科领域:生命科学 » 植物学 » 植物生理与生化
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原文链接:http://www.sciencemag.org/content/early/2012/10/24/science.1224836.abstract?sid=70d2a7bf-fce9-4452-8264-3188979a5465
DOI: 10.1126/science.1224836
ISBN: 0036-8075
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相关报道: http://paper.sciencenet.cn/htmlpaper/20121161451786726275.shtm
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