Sea-ice properties and nutrient concentration as drivers of the taxonomic and trophic structure of high-Arctic protist and metazoan communities
In the Arctic Ocean, sea-ice decline will significantly change the structure of biological communities. At the same time, changing nutrient dynamics can have similarly strong and potentially interacting effects. To investigate the response of the taxonomic and trophic structure of planktonic and ice...
Published in: | Polar Biology |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Science and Business Media LLC
2019
|
Subjects: | |
Online Access: | https://archimer.ifremer.fr/doc/00505/61681/65628.pdf https://archimer.ifremer.fr/doc/00505/61681/65629.pdf https://archimer.ifremer.fr/doc/00505/61681/65630.pdf https://archimer.ifremer.fr/doc/00505/61681/66204.pdf https://doi.org/10.1007/s00300-019-02526-z https://archimer.ifremer.fr/doc/00505/61681/ |
id |
ftarchimer:oai:archimer.ifremer.fr:61681 |
---|---|
record_format |
openpolar |
spelling |
ftarchimer:oai:archimer.ifremer.fr:61681 2023-05-15T14:51:57+02:00 Sea-ice properties and nutrient concentration as drivers of the taxonomic and trophic structure of high-Arctic protist and metazoan communities Flores, Hauke David, Carmen Ehrlich, Julia Hardge, Kristin Kohlbach, Doreen Lange, Benjamin A. Niehoff, Barbara Nöthig, Eva-maria Peeken, Ilka Metfies, Katja 2019-07 application/pdf https://archimer.ifremer.fr/doc/00505/61681/65628.pdf https://archimer.ifremer.fr/doc/00505/61681/65629.pdf https://archimer.ifremer.fr/doc/00505/61681/65630.pdf https://archimer.ifremer.fr/doc/00505/61681/66204.pdf https://doi.org/10.1007/s00300-019-02526-z https://archimer.ifremer.fr/doc/00505/61681/ eng eng Springer Science and Business Media LLC https://archimer.ifremer.fr/doc/00505/61681/65628.pdf https://archimer.ifremer.fr/doc/00505/61681/65629.pdf https://archimer.ifremer.fr/doc/00505/61681/65630.pdf https://archimer.ifremer.fr/doc/00505/61681/66204.pdf doi:10.1007/s00300-019-02526-z https://archimer.ifremer.fr/doc/00505/61681/ info:eu-repo/semantics/openAccess restricted use Polar Biology (0722-4060) (Springer Science and Business Media LLC), 2019-07 , Vol. 42 , N. 7 , P. 1377-1395 Arctic Ocean Sea ice Community structure Protists Zooplankton Under-ice fauna Nutrients Trophic ecology text Publication info:eu-repo/semantics/article 2019 ftarchimer https://doi.org/10.1007/s00300-019-02526-z 2023-01-10T23:50:40Z In the Arctic Ocean, sea-ice decline will significantly change the structure of biological communities. At the same time, changing nutrient dynamics can have similarly strong and potentially interacting effects. To investigate the response of the taxonomic and trophic structure of planktonic and ice-associated communities to varying sea-ice properties and nutrient concentrations, we analysed four different communities sampled in the Eurasian Basin in summer 2012: (1) protists and (2) metazoans from the under-ice habitat, and (3) protists and (4) metazoans from the epipelagic habitat. The taxonomic composition of protist communities was characterised with 18S meta-barcoding. The taxonomic composition of metazoan communities was determined based on morphology. The analysis of environmental parameters identified (i) a ‘shelf-influenced’ regime with melting sea ice, high-silicate concentrations and low NOx (nitrate + nitrite) concentrations; (ii) a ‘Polar’ regime with low silicate concentrations and low NOx concentrations; and (iii) an ‘Atlantic’ regime with low silicate concentrations and high NOx concentrations. Multivariate analyses of combined bio-environmental datasets showed that taxonomic community structure primarily responded to the variability of sea-ice properties and hydrography across all four communities. Trophic community structure, however, responded significantly to NOx concentrations. In three of the four communities, the most heterotrophic trophic group significantly dominated in the NOx-poor shelf-influenced and Polar regimes compared to the NOx-rich Atlantic regime. The more heterotrophic, NOx-poor regimes were associated with lower productivity and carbon export than the NOx-rich Atlantic regime. For modelling future Arctic ecosystems, it is important to consider that taxonomic diversity can respond to different drivers than trophic diversity. Article in Journal/Newspaper Arctic Arctic Ocean Polar Biology Sea ice Zooplankton Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Arctic Arctic Ocean Polar Biology 42 7 1377 1395 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Arctic Ocean Sea ice Community structure Protists Zooplankton Under-ice fauna Nutrients Trophic ecology |
spellingShingle |
Arctic Ocean Sea ice Community structure Protists Zooplankton Under-ice fauna Nutrients Trophic ecology Flores, Hauke David, Carmen Ehrlich, Julia Hardge, Kristin Kohlbach, Doreen Lange, Benjamin A. Niehoff, Barbara Nöthig, Eva-maria Peeken, Ilka Metfies, Katja Sea-ice properties and nutrient concentration as drivers of the taxonomic and trophic structure of high-Arctic protist and metazoan communities |
topic_facet |
Arctic Ocean Sea ice Community structure Protists Zooplankton Under-ice fauna Nutrients Trophic ecology |
description |
In the Arctic Ocean, sea-ice decline will significantly change the structure of biological communities. At the same time, changing nutrient dynamics can have similarly strong and potentially interacting effects. To investigate the response of the taxonomic and trophic structure of planktonic and ice-associated communities to varying sea-ice properties and nutrient concentrations, we analysed four different communities sampled in the Eurasian Basin in summer 2012: (1) protists and (2) metazoans from the under-ice habitat, and (3) protists and (4) metazoans from the epipelagic habitat. The taxonomic composition of protist communities was characterised with 18S meta-barcoding. The taxonomic composition of metazoan communities was determined based on morphology. The analysis of environmental parameters identified (i) a ‘shelf-influenced’ regime with melting sea ice, high-silicate concentrations and low NOx (nitrate + nitrite) concentrations; (ii) a ‘Polar’ regime with low silicate concentrations and low NOx concentrations; and (iii) an ‘Atlantic’ regime with low silicate concentrations and high NOx concentrations. Multivariate analyses of combined bio-environmental datasets showed that taxonomic community structure primarily responded to the variability of sea-ice properties and hydrography across all four communities. Trophic community structure, however, responded significantly to NOx concentrations. In three of the four communities, the most heterotrophic trophic group significantly dominated in the NOx-poor shelf-influenced and Polar regimes compared to the NOx-rich Atlantic regime. The more heterotrophic, NOx-poor regimes were associated with lower productivity and carbon export than the NOx-rich Atlantic regime. For modelling future Arctic ecosystems, it is important to consider that taxonomic diversity can respond to different drivers than trophic diversity. |
format |
Article in Journal/Newspaper |
author |
Flores, Hauke David, Carmen Ehrlich, Julia Hardge, Kristin Kohlbach, Doreen Lange, Benjamin A. Niehoff, Barbara Nöthig, Eva-maria Peeken, Ilka Metfies, Katja |
author_facet |
Flores, Hauke David, Carmen Ehrlich, Julia Hardge, Kristin Kohlbach, Doreen Lange, Benjamin A. Niehoff, Barbara Nöthig, Eva-maria Peeken, Ilka Metfies, Katja |
author_sort |
Flores, Hauke |
title |
Sea-ice properties and nutrient concentration as drivers of the taxonomic and trophic structure of high-Arctic protist and metazoan communities |
title_short |
Sea-ice properties and nutrient concentration as drivers of the taxonomic and trophic structure of high-Arctic protist and metazoan communities |
title_full |
Sea-ice properties and nutrient concentration as drivers of the taxonomic and trophic structure of high-Arctic protist and metazoan communities |
title_fullStr |
Sea-ice properties and nutrient concentration as drivers of the taxonomic and trophic structure of high-Arctic protist and metazoan communities |
title_full_unstemmed |
Sea-ice properties and nutrient concentration as drivers of the taxonomic and trophic structure of high-Arctic protist and metazoan communities |
title_sort |
sea-ice properties and nutrient concentration as drivers of the taxonomic and trophic structure of high-arctic protist and metazoan communities |
publisher |
Springer Science and Business Media LLC |
publishDate |
2019 |
url |
https://archimer.ifremer.fr/doc/00505/61681/65628.pdf https://archimer.ifremer.fr/doc/00505/61681/65629.pdf https://archimer.ifremer.fr/doc/00505/61681/65630.pdf https://archimer.ifremer.fr/doc/00505/61681/66204.pdf https://doi.org/10.1007/s00300-019-02526-z https://archimer.ifremer.fr/doc/00505/61681/ |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Polar Biology Sea ice Zooplankton |
genre_facet |
Arctic Arctic Ocean Polar Biology Sea ice Zooplankton |
op_source |
Polar Biology (0722-4060) (Springer Science and Business Media LLC), 2019-07 , Vol. 42 , N. 7 , P. 1377-1395 |
op_relation |
https://archimer.ifremer.fr/doc/00505/61681/65628.pdf https://archimer.ifremer.fr/doc/00505/61681/65629.pdf https://archimer.ifremer.fr/doc/00505/61681/65630.pdf https://archimer.ifremer.fr/doc/00505/61681/66204.pdf doi:10.1007/s00300-019-02526-z https://archimer.ifremer.fr/doc/00505/61681/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1007/s00300-019-02526-z |
container_title |
Polar Biology |
container_volume |
42 |
container_issue |
7 |
container_start_page |
1377 |
op_container_end_page |
1395 |
_version_ |
1766323082498146304 |