Deep-sea pelagic ichthyonekton diversity in the Atlantic Ocean and the adjacent sector of the Southern Ocean
Aim Deep-sea pelagic diversity is poorly understood. Local (SL) and regional (SR) ichthyonekton species richness are presented and analysed with respect to local and regional environmental factors, and biogeographical processes. Location Sixty-six stations from the Atlantic Ocean and adjacent sector...
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ftopenagrar:oai:www.openagrar.de:timport_mods_00034695 2024-09-15T17:45:12+00:00 Deep-sea pelagic ichthyonekton diversity in the Atlantic Ocean and the adjacent sector of the Southern Ocean Fock, Heino Ove 2009 13 https://doi.org/10.1111/j.1466-8238.2008.00435.x https://www.openagrar.de/receive/timport_mods_00034695 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00034695/dk041208.pdf eng eng Global ecology and biogeography : a journal of macroecology -- Global Ecol Biogeogr -- Global Ecol Biogeogr Lett -- 1466-8238 -- 2021283-5 https://doi.org/DOI:10.1111/j.1466-8238.2008.00435.x https://www.openagrar.de/receive/timport_mods_00034695 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00034695/dk041208.pdf only signed in user info:eu-repo/semantics/restrictedAccess article Text Atlantic Ocean bathypelagic deep-sea nekton latitudinal diversity gradients pelagic diversity primary production article Text doc-type:article 2009 ftopenagrar https://doi.org/10.1111/j.1466-8238.2008.00435.x 2024-07-08T23:56:24Z Aim Deep-sea pelagic diversity is poorly understood. Local (SL) and regional (SR) ichthyonekton species richness are presented and analysed with respect to local and regional environmental factors, and biogeographical processes. Location Sixty-six stations from the Atlantic Ocean and adjacent sector of the Southern Ocean, 65° N to 57° S. Methods Estimation of SL by means of rarefaction. Stepwise evaluation of SL and SR relationships by means of the second-order corrected Akaike information criterion (AICc) after locally weighted scatterplot smoothing (LOESS) and linear fitting, analysis of saturation effects by means of slopes of species accumulation curves (log–log plots). Results Latitudinal gradients were present for SL and SR, and were asymmetric between the Northern and Southern hemispheres. Relatively low species richness was encountered for the Southern Ocean. Asymmetry at the regional level by means of higher SR was attributed to area effects in the South Atlantic. Log–log plots indicated saturation of local assemblages and dependence on environmental factors. SL was related to productivity; this relationship was hump-shaped. SR was positively related to area size and negatively to seasonality of production. Biogeographical effects were indicated in that SR peaks coincided with overlap zones of boreal and tropical faunas as a consequence of historical faunal exchange processes. Main conclusions The stepwise approach allowed for distinction between effects of area size, productivity and biogeographical processes on diversity at local and regional scales. Productivity in particular is important in two ways. At the local scale, the link of productivity to SL is explained by a successional-functional hypothesis of resource utilization, whereas the seasonality effect for SR reinforces the hypothesis of dependence of deep-sea fishes on seasonality of production through changes of life-history traits. The causes of low Antarctic faunal diversity remained unresolved. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean OpenAgrar (OA) Global Ecology and Biogeography 18 2 178 191 |
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ftopenagrar |
language |
English |
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article Text Atlantic Ocean bathypelagic deep-sea nekton latitudinal diversity gradients pelagic diversity primary production |
spellingShingle |
article Text Atlantic Ocean bathypelagic deep-sea nekton latitudinal diversity gradients pelagic diversity primary production Fock, Heino Ove Deep-sea pelagic ichthyonekton diversity in the Atlantic Ocean and the adjacent sector of the Southern Ocean |
topic_facet |
article Text Atlantic Ocean bathypelagic deep-sea nekton latitudinal diversity gradients pelagic diversity primary production |
description |
Aim Deep-sea pelagic diversity is poorly understood. Local (SL) and regional (SR) ichthyonekton species richness are presented and analysed with respect to local and regional environmental factors, and biogeographical processes. Location Sixty-six stations from the Atlantic Ocean and adjacent sector of the Southern Ocean, 65° N to 57° S. Methods Estimation of SL by means of rarefaction. Stepwise evaluation of SL and SR relationships by means of the second-order corrected Akaike information criterion (AICc) after locally weighted scatterplot smoothing (LOESS) and linear fitting, analysis of saturation effects by means of slopes of species accumulation curves (log–log plots). Results Latitudinal gradients were present for SL and SR, and were asymmetric between the Northern and Southern hemispheres. Relatively low species richness was encountered for the Southern Ocean. Asymmetry at the regional level by means of higher SR was attributed to area effects in the South Atlantic. Log–log plots indicated saturation of local assemblages and dependence on environmental factors. SL was related to productivity; this relationship was hump-shaped. SR was positively related to area size and negatively to seasonality of production. Biogeographical effects were indicated in that SR peaks coincided with overlap zones of boreal and tropical faunas as a consequence of historical faunal exchange processes. Main conclusions The stepwise approach allowed for distinction between effects of area size, productivity and biogeographical processes on diversity at local and regional scales. Productivity in particular is important in two ways. At the local scale, the link of productivity to SL is explained by a successional-functional hypothesis of resource utilization, whereas the seasonality effect for SR reinforces the hypothesis of dependence of deep-sea fishes on seasonality of production through changes of life-history traits. The causes of low Antarctic faunal diversity remained unresolved. |
format |
Article in Journal/Newspaper |
author |
Fock, Heino Ove |
author_facet |
Fock, Heino Ove |
author_sort |
Fock, Heino Ove |
title |
Deep-sea pelagic ichthyonekton diversity in the Atlantic Ocean and the adjacent sector of the Southern Ocean |
title_short |
Deep-sea pelagic ichthyonekton diversity in the Atlantic Ocean and the adjacent sector of the Southern Ocean |
title_full |
Deep-sea pelagic ichthyonekton diversity in the Atlantic Ocean and the adjacent sector of the Southern Ocean |
title_fullStr |
Deep-sea pelagic ichthyonekton diversity in the Atlantic Ocean and the adjacent sector of the Southern Ocean |
title_full_unstemmed |
Deep-sea pelagic ichthyonekton diversity in the Atlantic Ocean and the adjacent sector of the Southern Ocean |
title_sort |
deep-sea pelagic ichthyonekton diversity in the atlantic ocean and the adjacent sector of the southern ocean |
publishDate |
2009 |
url |
https://doi.org/10.1111/j.1466-8238.2008.00435.x https://www.openagrar.de/receive/timport_mods_00034695 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00034695/dk041208.pdf |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
Global ecology and biogeography : a journal of macroecology -- Global Ecol Biogeogr -- Global Ecol Biogeogr Lett -- 1466-8238 -- 2021283-5 https://doi.org/DOI:10.1111/j.1466-8238.2008.00435.x https://www.openagrar.de/receive/timport_mods_00034695 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00034695/dk041208.pdf |
op_rights |
only signed in user info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1466-8238.2008.00435.x |
container_title |
Global Ecology and Biogeography |
container_volume |
18 |
container_issue |
2 |
container_start_page |
178 |
op_container_end_page |
191 |
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1810492933745410048 |