Evidence of small‐scale spatial structuring of phytoplankton alpha‐ and beta‐diversity in the open ocean
Summary Phytoplankton assemblages in the open ocean are usually assumed to be mixed on local scales unless large semi‐permanent density discontinuities separating water masses are present. Recent modelling studies have, however, suggested that ephemeral submesoscale oceanographic features leading to...
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Online Access: | http://dx.doi.org/10.1111/1365-2745.12634 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2745.12634 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2745.12634 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2745.12634 https://besjournals.onlinelibrary.wiley.com/doi/am-pdf/10.1111/1365-2745.12634 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2745.12634 |
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crwiley:10.1111/1365-2745.12634 2024-09-15T18:14:26+00:00 Evidence of small‐scale spatial structuring of phytoplankton alpha‐ and beta‐diversity in the open ocean Mousing, Erik Askov Richardson, Katherine Bendtsen, Jørgen Cetinić, Ivona Perry, Mary Jane Cornell, Will Danmarks Grundforskningsfond National Science Foundation National Aeronautics and Space Administration 2016 http://dx.doi.org/10.1111/1365-2745.12634 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2745.12634 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2745.12634 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2745.12634 https://besjournals.onlinelibrary.wiley.com/doi/am-pdf/10.1111/1365-2745.12634 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2745.12634 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Ecology volume 104, issue 6, page 1682-1695 ISSN 0022-0477 1365-2745 journal-article 2016 crwiley https://doi.org/10.1111/1365-2745.12634 2024-08-15T04:17:24Z Summary Phytoplankton assemblages in the open ocean are usually assumed to be mixed on local scales unless large semi‐permanent density discontinuities separating water masses are present. Recent modelling studies have, however, suggested that ephemeral submesoscale oceanographic features leading to only subtle density discontinuities may be important for controlling phytoplankton alpha‐ and beta‐diversity patterns. Until now, no empirical evidence has been presented to support this hypothesis. Using hydrographic and taxonomic composition data collected near Iceland during the period of the 2008 spring bloom, we show that the distribution of phytoplankton alpha‐ and beta‐diversity was related to submesoscale heterogeneity in oceanographic conditions. Distinct phytoplankton communities as well as differences in richness were identified on either side of a front delimiting surface waters of slightly different (˜0.03) salinities. Alpha‐diversity was significantly higher on the high salinity side of the front compared to the low salinity side. This difference was primarily driven by the presence of several large diatom species in the high salinity region, especially of the genus Chaetoceros which dominated the biomass here. By investigating beta‐diversity in relation to environmental and spatiotemporal variables, we show that the regional distribution of phytoplankton taxa was influenced by both different environmental conditions on either side of the front and dispersal limitation across the front. Changes in beta‐diversity were primarily driven by turnover rather than nestedness and were apparently controlled by different processes in each region. Synthesis . This study shows that small‐scale and ephemeral density discontinuities created by submesoscale frontal dynamics can play a major role in structuring patterns of phytoplankton diversity. Evidence is presented that they can generate changes in environmental conditions (leading to environmental filtering) and act as physical (dispersal) barriers for ... Article in Journal/Newspaper Iceland Wiley Online Library Journal of Ecology 104 6 1682 1695 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Summary Phytoplankton assemblages in the open ocean are usually assumed to be mixed on local scales unless large semi‐permanent density discontinuities separating water masses are present. Recent modelling studies have, however, suggested that ephemeral submesoscale oceanographic features leading to only subtle density discontinuities may be important for controlling phytoplankton alpha‐ and beta‐diversity patterns. Until now, no empirical evidence has been presented to support this hypothesis. Using hydrographic and taxonomic composition data collected near Iceland during the period of the 2008 spring bloom, we show that the distribution of phytoplankton alpha‐ and beta‐diversity was related to submesoscale heterogeneity in oceanographic conditions. Distinct phytoplankton communities as well as differences in richness were identified on either side of a front delimiting surface waters of slightly different (˜0.03) salinities. Alpha‐diversity was significantly higher on the high salinity side of the front compared to the low salinity side. This difference was primarily driven by the presence of several large diatom species in the high salinity region, especially of the genus Chaetoceros which dominated the biomass here. By investigating beta‐diversity in relation to environmental and spatiotemporal variables, we show that the regional distribution of phytoplankton taxa was influenced by both different environmental conditions on either side of the front and dispersal limitation across the front. Changes in beta‐diversity were primarily driven by turnover rather than nestedness and were apparently controlled by different processes in each region. Synthesis . This study shows that small‐scale and ephemeral density discontinuities created by submesoscale frontal dynamics can play a major role in structuring patterns of phytoplankton diversity. Evidence is presented that they can generate changes in environmental conditions (leading to environmental filtering) and act as physical (dispersal) barriers for ... |
author2 |
Cornell, Will Danmarks Grundforskningsfond National Science Foundation National Aeronautics and Space Administration |
format |
Article in Journal/Newspaper |
author |
Mousing, Erik Askov Richardson, Katherine Bendtsen, Jørgen Cetinić, Ivona Perry, Mary Jane |
spellingShingle |
Mousing, Erik Askov Richardson, Katherine Bendtsen, Jørgen Cetinić, Ivona Perry, Mary Jane Evidence of small‐scale spatial structuring of phytoplankton alpha‐ and beta‐diversity in the open ocean |
author_facet |
Mousing, Erik Askov Richardson, Katherine Bendtsen, Jørgen Cetinić, Ivona Perry, Mary Jane |
author_sort |
Mousing, Erik Askov |
title |
Evidence of small‐scale spatial structuring of phytoplankton alpha‐ and beta‐diversity in the open ocean |
title_short |
Evidence of small‐scale spatial structuring of phytoplankton alpha‐ and beta‐diversity in the open ocean |
title_full |
Evidence of small‐scale spatial structuring of phytoplankton alpha‐ and beta‐diversity in the open ocean |
title_fullStr |
Evidence of small‐scale spatial structuring of phytoplankton alpha‐ and beta‐diversity in the open ocean |
title_full_unstemmed |
Evidence of small‐scale spatial structuring of phytoplankton alpha‐ and beta‐diversity in the open ocean |
title_sort |
evidence of small‐scale spatial structuring of phytoplankton alpha‐ and beta‐diversity in the open ocean |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/1365-2745.12634 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2745.12634 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2745.12634 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2745.12634 https://besjournals.onlinelibrary.wiley.com/doi/am-pdf/10.1111/1365-2745.12634 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2745.12634 |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Journal of Ecology volume 104, issue 6, page 1682-1695 ISSN 0022-0477 1365-2745 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1365-2745.12634 |
container_title |
Journal of Ecology |
container_volume |
104 |
container_issue |
6 |
container_start_page |
1682 |
op_container_end_page |
1695 |
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1810452203859607552 |