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首页> 外文期刊>Current Biology: CB >A Southern Hemisphere Bathyal Fauna Is Distributed in Latitudinal Bands
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A Southern Hemisphere Bathyal Fauna Is Distributed in Latitudinal Bands

机译：南半球深海动物区系分布在纬度带上。

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摘要

The large-scale spatial distribution of seafloor fauna is still poorly understood. In particular, the bathyal zone has been identified as the key depth stratum requiring further macroecological research [1], particularly in the Southern Hemisphere [2]. Here we analyze a large biological data set derived from 295 research expeditions, across an equator-to-pole sector of the Indian, Pacific, and Southern oceans, to show that the bathyal ophiuroid fauna is distributed in three broad latitudinal bands and not primarily differentiated by oceanic basins as previously assumed. Adjacent faunas form transitional ecoclines rather than biogeographical breaks. This pattern is similar to that in shallow water despite the order-of-magnitude reduction in the variability of environmental parameters at bathyal depths. A reliable biogeography is fundamental to establishing a representative network of marine reserves across the world's oceans [[1] and [3]]. Highlights: Seafloor fauna was mapped from the equator to Antarctica Shallow-water and bathyal assemblages were structured into latitudinal faunas Adjacent faunas formed transitional ecoclines rather than biogeographical breaks Differentiation of bathyal fauna was not confluent with available oceanographic data
机译：对海底动物的大规模空间分布仍然知之甚少。特别是，深海区已被确定为关键深度层，需要进一步的宏观生态学研究[1]，特别是在南半球[2]。在这里，我们分析了来自295个研究探险队的大生物学数据集，该研究队横跨印度洋，太平洋和南部海洋的赤道至极点，以显示深海蛇形类动物群分布在三个宽纬度带上，并且没有主要区分如先前所假设的那样由大洋盆地组成。相邻的动物区系形成过渡生态线，而不是生物地理断裂。尽管在深水区环境参数的变化幅度减小了数量级，但该模式与浅水中的模式相似。可靠的生物地理环境对于建立代表全球海洋保护区的代表性网络至关重要[[1]和[3]]。亮点：海底动物区系从赤道到南极，浅水区和海床组合被构造成纬向动物区系相邻的动物区系形成过渡生态圈而不是生物地理断裂海底动物区系的划分与现有海洋学数据不相吻合

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