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Article: Marine latitudinal diversity gradients, niche conservatism and out of the tropics and Arctic: Climatic sensitivity of small organisms

TitleMarine latitudinal diversity gradients, niche conservatism and out of the tropics and Arctic: Climatic sensitivity of small organisms
Authors
Keywordsbenthos
biodiversity
dispersal
macroecology
Ostracoda
Issue Date2020
PublisherWiley-Blackwell Publishing Ltd. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2699
Citation
Journal of Biogeography, 2020, v. 47 n. 4, p. 817-828 How to Cite?
AbstractAim: The latitudinal diversity gradient (LDG) is a consequence of evolutionary and ecological mechanisms acting over long history, and thus is best investigated with organisms that have rich fossil records. However, combined neontological-palaeontological investigations are mostly limited to large, shelled invertebrates, which keeps our mechanistic understanding of LDGs in its infancy. This paper aims to describe the modern meiobenthic ostracod LDG and to explore the possible controlling factors and the evolutionary mechanisms of this large-scale biodiversity pattern. Location: Present-day Western North Atlantic. Taxon: Ostracoda. Methods: We compiled ostracod census data from shallow-marine environments of the western North Atlantic Ocean. Using these data, we documented the marine LDG with multiple metrics of alpha, beta (nestedness and turnover) and gamma diversity, and we tested whether macroecological patterns could be governed by different environmental factors, including temperature, salinity, dissolved oxygen, pH and primary productivity. We also explored the geologic age distribution of ostracod genera to investigate the evolutionary mechanisms underpinning the LDG. Results: Our results show that temperature and climatic niche conservatism are important in setting LDGs of these small, poorly dispersing organisms. We also found evidence for some dispersal-driven spatial dynamics in the ostracod LDG. Compared to patterns observed in marine bivalves, however, dispersal dynamics were weaker and they were bi-directional, rather than following the ‘out-of-the-tropics’ model. Main conclusions: Our detailed analyses revealed that meiobenthic organisms, which comprise two-thirds of marine diversity, do not always follow the same rules as larger, better-studied organisms. Our findings suggest that the understudied majority of biodiversity may be more sensitive to climate than well-studied, large organisms. This implies that the impacts of ongoing Anthropocene climatic change on marine ecosystems may be much more serious than presently thought.
Persistent Identifierhttp://hdl.handle.net/10722/294284
ISSN
2020 Impact Factor: 4.324
2015 SCImago Journal Rankings: 2.807
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorCHIU, WT-
dc.contributor.authorYasuhara, M-
dc.contributor.authorCronin, TM-
dc.contributor.authorHunt, G-
dc.contributor.authorGemery, L-
dc.contributor.authorWei, CL-
dc.date.accessioned2020-11-23T08:29:09Z-
dc.date.available2020-11-23T08:29:09Z-
dc.date.issued2020-
dc.identifier.citationJournal of Biogeography, 2020, v. 47 n. 4, p. 817-828-
dc.identifier.issn0305-0270-
dc.identifier.urihttp://hdl.handle.net/10722/294284-
dc.description.abstractAim: The latitudinal diversity gradient (LDG) is a consequence of evolutionary and ecological mechanisms acting over long history, and thus is best investigated with organisms that have rich fossil records. However, combined neontological-palaeontological investigations are mostly limited to large, shelled invertebrates, which keeps our mechanistic understanding of LDGs in its infancy. This paper aims to describe the modern meiobenthic ostracod LDG and to explore the possible controlling factors and the evolutionary mechanisms of this large-scale biodiversity pattern. Location: Present-day Western North Atlantic. Taxon: Ostracoda. Methods: We compiled ostracod census data from shallow-marine environments of the western North Atlantic Ocean. Using these data, we documented the marine LDG with multiple metrics of alpha, beta (nestedness and turnover) and gamma diversity, and we tested whether macroecological patterns could be governed by different environmental factors, including temperature, salinity, dissolved oxygen, pH and primary productivity. We also explored the geologic age distribution of ostracod genera to investigate the evolutionary mechanisms underpinning the LDG. Results: Our results show that temperature and climatic niche conservatism are important in setting LDGs of these small, poorly dispersing organisms. We also found evidence for some dispersal-driven spatial dynamics in the ostracod LDG. Compared to patterns observed in marine bivalves, however, dispersal dynamics were weaker and they were bi-directional, rather than following the ‘out-of-the-tropics’ model. Main conclusions: Our detailed analyses revealed that meiobenthic organisms, which comprise two-thirds of marine diversity, do not always follow the same rules as larger, better-studied organisms. Our findings suggest that the understudied majority of biodiversity may be more sensitive to climate than well-studied, large organisms. This implies that the impacts of ongoing Anthropocene climatic change on marine ecosystems may be much more serious than presently thought.-
dc.languageeng-
dc.publisherWiley-Blackwell Publishing Ltd. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2699-
dc.relation.ispartofJournal of Biogeography-
dc.rightsSubmitted (preprint) Version This is the pre-peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. Accepted (peer-reviewed) Version This is the peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.-
dc.subjectbenthos-
dc.subjectbiodiversity-
dc.subjectdispersal-
dc.subjectmacroecology-
dc.subjectOstracoda-
dc.titleMarine latitudinal diversity gradients, niche conservatism and out of the tropics and Arctic: Climatic sensitivity of small organisms-
dc.typeArticle-
dc.identifier.emailYasuhara, M: yasuhara@hku.hk-
dc.identifier.authorityYasuhara, M=rp01474-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1111/jbi.13793-
dc.identifier.scopuseid_2-s2.0-85078657971-
dc.identifier.hkuros318816-
dc.identifier.volume47-
dc.identifier.issue4-
dc.identifier.spage817-
dc.identifier.epage828-
dc.identifier.isiWOS:000508600600001-
dc.publisher.placeUnited Kingdom-

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