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首页> 外文期刊>Biodiversity and Conservation >Newly arrived or previously overlooked: is there evidence for climate-driven changes in the distribution of molluscs in the Barents Sea?
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Newly arrived or previously overlooked: is there evidence for climate-driven changes in the distribution of molluscs in the Barents Sea?

机译：新来的或以前被忽略的：是否有证据表明气候驱动的巴伦支海软体动物分布发生变化？

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摘要

In recent years, there have been frequent reports of invertebrate species newly recorded from particular areas of the Northeastern Atlantic, and it has often been suggested that these are the result of changes in species ranges due to recent warming. These suggestions make three assumptions: (1) that we have a good knowledge of the fauna of these areas; (2) that new records of "southern" species are more frequent than new records of "northern" species; (3) that climate change is the only factor affecting species range. I tested these assumptions on published records of 30 benthic molluscan species which have been found alive for the first time in the Russian part of the Barents Sea since 2006. Some of the discussed species are warm-water species and may have extended their ranges northward in response to climate change. However, our baseline knowledge of the molluscan fauna of this area before 2006 is limited by the frequent lack of molluscan specialists to study the available material, by the frequent lack of detailed publication and by changes in sampling and processing methods. New records of "southern" species are in fact not significantly commoner than new records of "northern" species. Also reasons other than climate change for observed changes in species distribution should be considered.
机译：近年来，频繁报道东北大西洋特定地区新记录的无脊椎动物物种，并且经常有人认为这是由于近期变暖导致物种范围变化的结果。这些建议基于以下三个假设：（1）我们对这些地区的动物有充分的了解; （2）“南方”物种的新记录比“北方”物种的新记录更频繁; （3）气候变化是影响物种范围的唯一因素。我从2006年以来在巴伦支海的俄罗斯部分首次发现活着的30种底栖软体动物物种的公开记录中检验了这些假设。一些讨论过的物种是温水物种，可能已将其范围向北扩展。应对气候变化。但是，由于缺乏软体动物专家来研究现有材料，缺乏详尽的出版物以及采样和加工方法的变化，我们在2006年之前对该地区软体动物的基础知识受到了限制。实际上，“南方”物种的新记录并不比“北方”物种的新记录明显地普遍。还应考虑除气候变化以外的观察到的物种分布变化的原因。

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