Abstract：
:A reliable description of any spatial pattern in species richness requires accurate knowledge about species geographical distribution. However, sampling bias may generate artefactual absences within species range and compromise our capacity to describe biodiversity patterns. Here, we analysed the spatial distribution of 35,000 marine species (varying from copepods to sharks) to identify missing occurrences (gaps) across their latitudinal range. We find a latitudinal gradient of species absence peaking near the equator, a pattern observed in both shallow and deep waters. The tropical gap in species distribution seems a consequence of reduced sampling effort at low latitudes. Overall, our results suggest that spatial gaps in species distribution are the main cause of the bimodal pattern of marine diversity. Therefore, only increasing sampling effort at low latitudes will reveal if the absence of species in the tropics, and the consequent dip in species richness, are artefacts of sampling bias or a natural phenomenon.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Menegotto A,Rangel TFdoi
10.1038/s41467-018-07217-7subject
Has Abstractpub_date
2018-11-09 00:00:00pages
4713issue
1issn
2041-1723pii
10.1038/s41467-018-07217-7journal_volume
9pub_type
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更新日期：2019-10-30 00:00:00
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pub_type： 杂志文章,评审
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更新日期：2019-08-28 00:00:00
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更新日期：2019-10-16 00:00:00
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pub_type： 杂志文章
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更新日期：2019-04-30 00:00:00
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更新日期：2017-07-21 00:00:00
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更新日期：2016-11-25 00:00:00
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pub_type： 杂志文章,已发布勘误
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