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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Thermal acclimation capacity for four Arctic marine benthic species
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Thermal acclimation capacity for four Arctic marine benthic species

机译：四种北极海洋底栖生物的热适应能力

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摘要

There are areas on Earth where it is pressing that we obtain an understanding of the thermal limits and acclimation capacities of the species living there. These are the zones where environmental temperatures are currently changing more rapidly and are predicted to continue to do so in the future. The foremost amongst these is possibly the Arctic, where in some areas air temperatures have risen on average by over 1.7 ℃ in the last 30 years, and sea ice cover has markedly decreased in recent decades. Here we present data on responses of 4 Arctic marine benthic species to elevated temperature. There is very strong evidence that the urchin Strongylocentrotus droebachiensis and the gastropod Margarites helicinus can acclimate to 10.3 ℃, and some evidence that some individuals of the bivalve Serripes groenlandicus and the amphipod Onisimus sp. Can also acclimate to this temperature. This is more than 3 ℃ higher than experienced maximum summer temperatures. Acclimation to 7.1 ℃ produced reductions in acute upper temperature limits (Ctmax) in all species, whereas acclimation to 10.3 ℃ produced increases. Although data are still limited, a capacity to acclimate to temperatures 3-5 ℃ above those experienced in the summer is similar to capacities of cold temperate species and higher than reported values for tropical or Antarctic marine invertebrates.
机译：我们迫切需要了解地球上某些地区的温度极限和生活在这里的物种的适应能力。这些区域当前的环境温度变化更快，并且预计将来还会继续变化。其中最重要的可能是北极，在过去的30年中，某些地区的气温平均升高了1.7℃以上，近几十年来海冰的覆盖率明显下降。在这里，我们介绍了4种北极海洋底栖生物对高温的响应数据。有非常有力的证据表明，顽固的海胆Strongylocentrotus droebachiensis和腹足纲的玛格丽特螺旋藻可以适应10.3℃，还有一些证据表明，双壳类的Seriripes groenlandicus和两栖纲Onisimus sp。的个体。也可以适应这个温度。这比夏季最高气温高出3℃以上。适应7.1℃会降低所有物种的急性温度上限（Ctmax），而适应于10.3℃会增加。尽管数据仍然有限，但适应温度要比夏季高出3-5℃的能力类似于冷温带物种的能力，并且高于热带或南极海洋无脊椎动物的报道值。

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