Data from: Evidence of small-scale spatial structuring of phytoplankton alpha- and beta-diversity in the open ocean
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 su...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:94442 2023-07-02T03:32:44+02:00 Data from: 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 2016-08-12T18:04:46.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-fa-dhsx https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:94442 unknown doi:10.5061/dryad.n0066/1 doi:10.1111/1365-2745.12634 http://nbn-resolving.org/urn:nbn:nl:ui:13-fa-dhsx doi:10.5061/dryad.n0066 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:94442 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2016 ftdans https://doi.org/10.5061/dryad.n0066/110.1111/1365-2745.1263410.5061/dryad.n0066 2023-06-13T13:22:34Z 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 phytoplankton ... Other/Unknown Material Iceland Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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Open Polar |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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Life sciences medicine and health care |
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Life sciences medicine and health care Mousing, Erik Askov Richardson, Katherine Bendtsen, Jørgen Cetinić, Ivona Perry, Mary Jane Data from: Evidence of small-scale spatial structuring of phytoplankton alpha- and beta-diversity in the open ocean |
topic_facet |
Life sciences medicine and health care |
description |
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 phytoplankton ... |
author |
Mousing, Erik Askov Richardson, Katherine Bendtsen, Jørgen Cetinić, Ivona Perry, Mary Jane |
author_facet |
Mousing, Erik Askov Richardson, Katherine Bendtsen, Jørgen Cetinić, Ivona Perry, Mary Jane |
author_sort |
Mousing, Erik Askov |
title |
Data from: Evidence of small-scale spatial structuring of phytoplankton alpha- and beta-diversity in the open ocean |
title_short |
Data from: Evidence of small-scale spatial structuring of phytoplankton alpha- and beta-diversity in the open ocean |
title_full |
Data from: Evidence of small-scale spatial structuring of phytoplankton alpha- and beta-diversity in the open ocean |
title_fullStr |
Data from: Evidence of small-scale spatial structuring of phytoplankton alpha- and beta-diversity in the open ocean |
title_full_unstemmed |
Data from: Evidence of small-scale spatial structuring of phytoplankton alpha- and beta-diversity in the open ocean |
title_sort |
data from: evidence of small-scale spatial structuring of phytoplankton alpha- and beta-diversity in the open ocean |
publishDate |
2016 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-fa-dhsx https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:94442 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
doi:10.5061/dryad.n0066/1 doi:10.1111/1365-2745.12634 http://nbn-resolving.org/urn:nbn:nl:ui:13-fa-dhsx doi:10.5061/dryad.n0066 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:94442 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.n0066/110.1111/1365-2745.1263410.5061/dryad.n0066 |
_version_ |
1770272400165830656 |