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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Data Archiving and Networked Services (DANS)
2017
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Online Access: | https://doi.org/10.5061/dryad.n0066 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::dac72a0220af268582dbe226c29ebb24 2023-05-15T16:52:34+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 2017-01-01 https://doi.org/10.5061/dryad.n0066 undefined unknown Data Archiving and Networked Services (DANS) http://dx.doi.org/10.5061/dryad.n0066 https://dx.doi.org/10.5061/dryad.n0066 lic_creative-commons oai:easy.dans.knaw.nl:easy-dataset:94442 10.5061/dryad.n0066 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:94442 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 Life sciences medicine and health care Sub-mesoscale fronts Spatiotemporal heterogeneity Determinants of plant community diversity and structure beta-diversity Richness phytoplankton niche Spring 2008 Community composition Dispersal North Atlantic Ocean envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2017 fttriple https://doi.org/10.5061/dryad.n0066 2023-01-22T16:53:37Z 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 ... Dataset Iceland North Atlantic Unknown |
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Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
Life sciences medicine and health care Sub-mesoscale fronts Spatiotemporal heterogeneity Determinants of plant community diversity and structure beta-diversity Richness phytoplankton niche Spring 2008 Community composition Dispersal North Atlantic Ocean envir geo |
spellingShingle |
Life sciences medicine and health care Sub-mesoscale fronts Spatiotemporal heterogeneity Determinants of plant community diversity and structure beta-diversity Richness phytoplankton niche Spring 2008 Community composition Dispersal North Atlantic Ocean envir geo 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 Sub-mesoscale fronts Spatiotemporal heterogeneity Determinants of plant community diversity and structure beta-diversity Richness phytoplankton niche Spring 2008 Community composition Dispersal North Atlantic Ocean envir geo |
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 ... |
format |
Dataset |
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 |
publisher |
Data Archiving and Networked Services (DANS) |
publishDate |
2017 |
url |
https://doi.org/10.5061/dryad.n0066 |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_source |
oai:easy.dans.knaw.nl:easy-dataset:94442 10.5061/dryad.n0066 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:94442 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 |
op_relation |
http://dx.doi.org/10.5061/dryad.n0066 https://dx.doi.org/10.5061/dryad.n0066 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.n0066 |
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1766042940913745920 |