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...
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Online Access: | https://doi.org/10.1007/s00300-019-02526-z 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://archimer.ifremer.fr/doc/00505/61681/ |
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fttriple:oai:gotriple.eu:10670/1.opcd8b 2023-05-15T14:55:49+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 https://doi.org/10.1007/s00300-019-02526-z 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://archimer.ifremer.fr/doc/00505/61681/ en eng Springer Science and Business Media LLC doi:10.1007/s00300-019-02526-z 10670/1.opcd8b 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://archimer.ifremer.fr/doc/00505/61681/ Archimer, archive institutionnelle de l'Ifremer Polar Biology (0722-4060) (Springer Science and Business Media LLC), 2019-07 , Vol. 42 , N. 7 , P. 1377-1395 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1007/s00300-019-02526-z 2023-01-22T17:01:30Z 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. Text Arctic Arctic Ocean Polar Biology Sea ice Unknown Arctic Arctic Ocean Polar Biology 42 7 1377 1395 |
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envir geo 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 |
envir geo |
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 |
Text |
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 |
url |
https://doi.org/10.1007/s00300-019-02526-z 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://archimer.ifremer.fr/doc/00505/61681/ |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Polar Biology Sea ice |
genre_facet |
Arctic Arctic Ocean Polar Biology Sea ice |
op_source |
Archimer, archive institutionnelle de l'Ifremer Polar Biology (0722-4060) (Springer Science and Business Media LLC), 2019-07 , Vol. 42 , N. 7 , P. 1377-1395 |
op_relation |
doi:10.1007/s00300-019-02526-z 10670/1.opcd8b 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://archimer.ifremer.fr/doc/00505/61681/ |
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 |
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1766327828773601280 |