Models of Plankton Community Changes during a Warm Water Anomaly in Arctic Waters Show Altered Trophic Pathways with Minimal Changes in Carbon Export
Carbon flow through pelagic food webs is an expression of the composition, biomass and activity of phytoplankton as primary producers. In the near future, severe environmental changes in the Arctic Ocean are expected to lead to modifications of phytoplankton communities. Here, we used a combination...
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ftdoajarticles:oai:doaj.org/article:7fece134766a435ba4e9adbb94f355e0 2023-05-15T14:59:56+02:00 Models of Plankton Community Changes during a Warm Water Anomaly in Arctic Waters Show Altered Trophic Pathways with Minimal Changes in Carbon Export Maria Vernet Tammi L. Richardson Katja Metfies Eva-Maria Nöthig Ilka Peeken 2017-05-01T00:00:00Z https://doi.org/10.3389/fmars.2017.00160 https://doaj.org/article/7fece134766a435ba4e9adbb94f355e0 EN eng Frontiers Media S.A. http://journal.frontiersin.org/article/10.3389/fmars.2017.00160/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2017.00160 https://doaj.org/article/7fece134766a435ba4e9adbb94f355e0 Frontiers in Marine Science, Vol 4 (2017) phytoplankton flagellates food web carbon cycling inverse model Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2017 ftdoajarticles https://doi.org/10.3389/fmars.2017.00160 2022-12-31T07:02:49Z Carbon flow through pelagic food webs is an expression of the composition, biomass and activity of phytoplankton as primary producers. In the near future, severe environmental changes in the Arctic Ocean are expected to lead to modifications of phytoplankton communities. Here, we used a combination of linear inverse modeling and ecological network analysis to study changes in food webs before, during, and after an anomalous warm water event in the eastern Fram Strait of the West Spitsbergen Current (WSC) that resulted in a shift from diatoms to flagellates during the summer (June–July). The model predicts substantial differences in the pathways of carbon flow in diatom- vs. Phaeocystis/nanoflagellate-dominated phytoplankton communities, but relatively small differences in carbon export. The model suggests a change in the zooplankton community and activity through increasing microzooplankton abundance and the switching of meso- and macrozooplankton feeding from strict herbivory to omnivory, detritivory and coprophagy. When small cells and flagellates dominated, the phytoplankton carbon pathway through the food web was longer and the microbial loop more active. Furthermore, one step was added in the flow from phytoplankton to mesozooplankton, and phytoplankton carbon to higher trophic levels is available via detritus or microzooplankton. Model results highlight how specific changes in phytoplankton community composition, as expected in a climate change scenario, do not necessarily lead to a reduction in carbon export. Article in Journal/Newspaper Arctic Arctic Ocean Climate change Fram Strait Phytoplankton Zooplankton Spitsbergen Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Frontiers in Marine Science 4 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
phytoplankton flagellates food web carbon cycling inverse model Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
phytoplankton flagellates food web carbon cycling inverse model Science Q General. Including nature conservation geographical distribution QH1-199.5 Maria Vernet Tammi L. Richardson Katja Metfies Eva-Maria Nöthig Ilka Peeken Models of Plankton Community Changes during a Warm Water Anomaly in Arctic Waters Show Altered Trophic Pathways with Minimal Changes in Carbon Export |
topic_facet |
phytoplankton flagellates food web carbon cycling inverse model Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
Carbon flow through pelagic food webs is an expression of the composition, biomass and activity of phytoplankton as primary producers. In the near future, severe environmental changes in the Arctic Ocean are expected to lead to modifications of phytoplankton communities. Here, we used a combination of linear inverse modeling and ecological network analysis to study changes in food webs before, during, and after an anomalous warm water event in the eastern Fram Strait of the West Spitsbergen Current (WSC) that resulted in a shift from diatoms to flagellates during the summer (June–July). The model predicts substantial differences in the pathways of carbon flow in diatom- vs. Phaeocystis/nanoflagellate-dominated phytoplankton communities, but relatively small differences in carbon export. The model suggests a change in the zooplankton community and activity through increasing microzooplankton abundance and the switching of meso- and macrozooplankton feeding from strict herbivory to omnivory, detritivory and coprophagy. When small cells and flagellates dominated, the phytoplankton carbon pathway through the food web was longer and the microbial loop more active. Furthermore, one step was added in the flow from phytoplankton to mesozooplankton, and phytoplankton carbon to higher trophic levels is available via detritus or microzooplankton. Model results highlight how specific changes in phytoplankton community composition, as expected in a climate change scenario, do not necessarily lead to a reduction in carbon export. |
format |
Article in Journal/Newspaper |
author |
Maria Vernet Tammi L. Richardson Katja Metfies Eva-Maria Nöthig Ilka Peeken |
author_facet |
Maria Vernet Tammi L. Richardson Katja Metfies Eva-Maria Nöthig Ilka Peeken |
author_sort |
Maria Vernet |
title |
Models of Plankton Community Changes during a Warm Water Anomaly in Arctic Waters Show Altered Trophic Pathways with Minimal Changes in Carbon Export |
title_short |
Models of Plankton Community Changes during a Warm Water Anomaly in Arctic Waters Show Altered Trophic Pathways with Minimal Changes in Carbon Export |
title_full |
Models of Plankton Community Changes during a Warm Water Anomaly in Arctic Waters Show Altered Trophic Pathways with Minimal Changes in Carbon Export |
title_fullStr |
Models of Plankton Community Changes during a Warm Water Anomaly in Arctic Waters Show Altered Trophic Pathways with Minimal Changes in Carbon Export |
title_full_unstemmed |
Models of Plankton Community Changes during a Warm Water Anomaly in Arctic Waters Show Altered Trophic Pathways with Minimal Changes in Carbon Export |
title_sort |
models of plankton community changes during a warm water anomaly in arctic waters show altered trophic pathways with minimal changes in carbon export |
publisher |
Frontiers Media S.A. |
publishDate |
2017 |
url |
https://doi.org/10.3389/fmars.2017.00160 https://doaj.org/article/7fece134766a435ba4e9adbb94f355e0 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Climate change Fram Strait Phytoplankton Zooplankton Spitsbergen |
genre_facet |
Arctic Arctic Ocean Climate change Fram Strait Phytoplankton Zooplankton Spitsbergen |
op_source |
Frontiers in Marine Science, Vol 4 (2017) |
op_relation |
http://journal.frontiersin.org/article/10.3389/fmars.2017.00160/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2017.00160 https://doaj.org/article/7fece134766a435ba4e9adbb94f355e0 |
op_doi |
https://doi.org/10.3389/fmars.2017.00160 |
container_title |
Frontiers in Marine Science |
container_volume |
4 |
_version_ |
1766332049808949248 |