Contrasting response to nutrient manipulation in Arctic mesocosms are reproduced by a minimum microbial food web model
A minimum mathematical model of the marine pelagic microbial food web has previously shown to be able to reproduce central aspects of observed system response to different bottom-up manipulations in a mesocosm experiment Microbial Ecosystem Dynamics (MEDEA) in Danish waters. In this study, we apply...
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ftpubmed:oai:pubmedcentral.nih.gov:4459036 2023-05-15T14:47:05+02:00 Contrasting response to nutrient manipulation in Arctic mesocosms are reproduced by a minimum microbial food web model Larsen, Aud Egge, Jorun K Nejstgaard, Jens C Di Capua, Iole Thyrhaug, Runar Bratbak, Gunnar Thingstad, T Frede 2015-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4459036/ https://doi.org/10.1002/lno.10025 en eng BlackWell Publishing Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4459036/ http://dx.doi.org/10.1002/lno.10025 © 2015 The Authors Limnology and Oceanography published by Wiley Periodicals, Inc. on behalf of Association for the Sciences of Limnology and Oceanography http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. CC-BY-NC-ND Articles Text 2015 ftpubmed https://doi.org/10.1002/lno.10025 2015-06-14T00:13:42Z A minimum mathematical model of the marine pelagic microbial food web has previously shown to be able to reproduce central aspects of observed system response to different bottom-up manipulations in a mesocosm experiment Microbial Ecosystem Dynamics (MEDEA) in Danish waters. In this study, we apply this model to two mesocosm experiments (Polar Aquatic Microbial Ecology (PAME)-I and PAME-II) conducted at the Arctic location Kongsfjorden, Svalbard. The different responses of the microbial community to similar nutrient manipulation in the three mesocosm experiments may be described as diatom-dominated (MEDEA), bacteria-dominated (PAME-I), and flagellated-dominated (PAME-II). When allowing ciliates to be able to feed on small diatoms, the model describing the diatom-dominated MEDEA experiment give a bacteria-dominated response as observed in PAME I in which the diatom community comprised almost exclusively small-sized cells. Introducing a high initial mesozooplankton stock as observed in PAME-II, the model gives a flagellate-dominated response in accordance with the observed response also of this experiment. The ability of the model originally developed for temperate waters to reproduce population dynamics in a 10°C colder Arctic fjord, does not support the existence of important shifts in population balances over this temperature range. Rather, it suggests a quite resilient microbial food web when adapted to in situ temperature. The sensitivity of the model response to its mesozooplankton component suggests, however, that the seasonal vertical migration of Arctic copepods may be a strong forcing factor on Arctic microbial food webs. Text Arctic Kongsfjord* Kongsfjorden Mesozooplankton PAME Svalbard Copepods PubMed Central (PMC) Arctic Svalbard Limnology and Oceanography 60 2 360 374 |
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Articles Larsen, Aud Egge, Jorun K Nejstgaard, Jens C Di Capua, Iole Thyrhaug, Runar Bratbak, Gunnar Thingstad, T Frede Contrasting response to nutrient manipulation in Arctic mesocosms are reproduced by a minimum microbial food web model |
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description |
A minimum mathematical model of the marine pelagic microbial food web has previously shown to be able to reproduce central aspects of observed system response to different bottom-up manipulations in a mesocosm experiment Microbial Ecosystem Dynamics (MEDEA) in Danish waters. In this study, we apply this model to two mesocosm experiments (Polar Aquatic Microbial Ecology (PAME)-I and PAME-II) conducted at the Arctic location Kongsfjorden, Svalbard. The different responses of the microbial community to similar nutrient manipulation in the three mesocosm experiments may be described as diatom-dominated (MEDEA), bacteria-dominated (PAME-I), and flagellated-dominated (PAME-II). When allowing ciliates to be able to feed on small diatoms, the model describing the diatom-dominated MEDEA experiment give a bacteria-dominated response as observed in PAME I in which the diatom community comprised almost exclusively small-sized cells. Introducing a high initial mesozooplankton stock as observed in PAME-II, the model gives a flagellate-dominated response in accordance with the observed response also of this experiment. The ability of the model originally developed for temperate waters to reproduce population dynamics in a 10°C colder Arctic fjord, does not support the existence of important shifts in population balances over this temperature range. Rather, it suggests a quite resilient microbial food web when adapted to in situ temperature. The sensitivity of the model response to its mesozooplankton component suggests, however, that the seasonal vertical migration of Arctic copepods may be a strong forcing factor on Arctic microbial food webs. |
format |
Text |
author |
Larsen, Aud Egge, Jorun K Nejstgaard, Jens C Di Capua, Iole Thyrhaug, Runar Bratbak, Gunnar Thingstad, T Frede |
author_facet |
Larsen, Aud Egge, Jorun K Nejstgaard, Jens C Di Capua, Iole Thyrhaug, Runar Bratbak, Gunnar Thingstad, T Frede |
author_sort |
Larsen, Aud |
title |
Contrasting response to nutrient manipulation in Arctic mesocosms are reproduced by a minimum microbial food web model |
title_short |
Contrasting response to nutrient manipulation in Arctic mesocosms are reproduced by a minimum microbial food web model |
title_full |
Contrasting response to nutrient manipulation in Arctic mesocosms are reproduced by a minimum microbial food web model |
title_fullStr |
Contrasting response to nutrient manipulation in Arctic mesocosms are reproduced by a minimum microbial food web model |
title_full_unstemmed |
Contrasting response to nutrient manipulation in Arctic mesocosms are reproduced by a minimum microbial food web model |
title_sort |
contrasting response to nutrient manipulation in arctic mesocosms are reproduced by a minimum microbial food web model |
publisher |
BlackWell Publishing Ltd |
publishDate |
2015 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4459036/ https://doi.org/10.1002/lno.10025 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Kongsfjord* Kongsfjorden Mesozooplankton PAME Svalbard Copepods |
genre_facet |
Arctic Kongsfjord* Kongsfjorden Mesozooplankton PAME Svalbard Copepods |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4459036/ http://dx.doi.org/10.1002/lno.10025 |
op_rights |
© 2015 The Authors Limnology and Oceanography published by Wiley Periodicals, Inc. on behalf of Association for the Sciences of Limnology and Oceanography http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1002/lno.10025 |
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Limnology and Oceanography |
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60 |
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2 |
container_start_page |
360 |
op_container_end_page |
374 |
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1766318208596312064 |