Responses of summer phytoplankton biomass to changes in top-down forcing : insights from comparative modelling
Author Posting. © The Author(s), 2018. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in Ecological Mod...
Published in: | Ecological Modelling |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , |
Format: | Report |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://hdl.handle.net/1912/10376 |
id |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/10376 |
---|---|
record_format |
openpolar |
spelling |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/10376 2023-05-15T17:24:24+02:00 Responses of summer phytoplankton biomass to changes in top-down forcing : insights from comparative modelling Maar, Marie Butenschön, Momme Daewel, Ute Eggert, Anja Fan, Wei Hjøllo, Solfrid S. Hufnagl, Marc Huret, Martin Ji, Rubao Lacroix, Geneviève Peck, Myron A. Radtke, Hagen Sailley, Sevrine F. Sinerchia, Matteo Skogen, Morten D. Travers-Trolet, Morgane Troost, Tineke A. van de Wolfshaar, Karen 2018-03 https://hdl.handle.net/1912/10376 en eng https://doi.org/10.1016/j.ecolmodel.2018.03.003 https://hdl.handle.net/1912/10376 Plankton functional types Trophic cascades Zooplankton mortality Phytoplankton Ensemble modelling Preprint 2018 ftwhoas https://doi.org/10.1016/j.ecolmodel.2018.03.003 2022-05-28T23:00:23Z Author Posting. © The Author(s), 2018. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in Ecological Modelling 376 (2018): 54-67, doi:10.1016/j.ecolmodel.2018.03.003. The present study describes the responses of summer phytoplankton biomass to changes in top-down forcing (expressed as zooplankton mortality) in three ecosystems (the North Sea, the Baltic Sea and the Nordic Seas) across different 3D ecosystem models. In each of the model set-ups, we applied the same changes in the magnitude of mortality (±20%) of the highest trophic zooplankton level (Z1). Model results showed overall dampened responses of phytoplankton relative to Z1 biomass. Phytoplankton responses varied depending on the food web structure and trophic coupling represented in the models. Hence, a priori model assumptions were found to influence cascades and pathways in model estimates and, thus, become highly relevant when examining ecosystem pressures such as fishing and climate change. Especially, the different roles and parameterizations of additional zooplankton groups grazed by Z1, and their importance for the outcome, emphasized the need for better calibration data. Spatial variability was high within each model indicating that physics (hydrodynamics and temperature) and nutrient dynamics also play vital roles for ecosystem responses to top-down effects. In conclusion, the model comparison indicated that changes in top-down forcing in combination with the modelled food-web structure affect summer phytoplankton biomass and, thereby, indirectly influence water quality of the systems. The work was supported by the EU grant “Vectors of Change in Oceans and Seas, Marine Life, Impact and Economic Sectors” (Vectors, FP7/2010-2013) and The Danish Council for Strategic Research to the project “Integrated Management of Agriculture, Fishery, Environment and ... Report Nordic Seas Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Ecological Modelling 376 54 67 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Plankton functional types Trophic cascades Zooplankton mortality Phytoplankton Ensemble modelling |
spellingShingle |
Plankton functional types Trophic cascades Zooplankton mortality Phytoplankton Ensemble modelling Maar, Marie Butenschön, Momme Daewel, Ute Eggert, Anja Fan, Wei Hjøllo, Solfrid S. Hufnagl, Marc Huret, Martin Ji, Rubao Lacroix, Geneviève Peck, Myron A. Radtke, Hagen Sailley, Sevrine F. Sinerchia, Matteo Skogen, Morten D. Travers-Trolet, Morgane Troost, Tineke A. van de Wolfshaar, Karen Responses of summer phytoplankton biomass to changes in top-down forcing : insights from comparative modelling |
topic_facet |
Plankton functional types Trophic cascades Zooplankton mortality Phytoplankton Ensemble modelling |
description |
Author Posting. © The Author(s), 2018. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in Ecological Modelling 376 (2018): 54-67, doi:10.1016/j.ecolmodel.2018.03.003. The present study describes the responses of summer phytoplankton biomass to changes in top-down forcing (expressed as zooplankton mortality) in three ecosystems (the North Sea, the Baltic Sea and the Nordic Seas) across different 3D ecosystem models. In each of the model set-ups, we applied the same changes in the magnitude of mortality (±20%) of the highest trophic zooplankton level (Z1). Model results showed overall dampened responses of phytoplankton relative to Z1 biomass. Phytoplankton responses varied depending on the food web structure and trophic coupling represented in the models. Hence, a priori model assumptions were found to influence cascades and pathways in model estimates and, thus, become highly relevant when examining ecosystem pressures such as fishing and climate change. Especially, the different roles and parameterizations of additional zooplankton groups grazed by Z1, and their importance for the outcome, emphasized the need for better calibration data. Spatial variability was high within each model indicating that physics (hydrodynamics and temperature) and nutrient dynamics also play vital roles for ecosystem responses to top-down effects. In conclusion, the model comparison indicated that changes in top-down forcing in combination with the modelled food-web structure affect summer phytoplankton biomass and, thereby, indirectly influence water quality of the systems. The work was supported by the EU grant “Vectors of Change in Oceans and Seas, Marine Life, Impact and Economic Sectors” (Vectors, FP7/2010-2013) and The Danish Council for Strategic Research to the project “Integrated Management of Agriculture, Fishery, Environment and ... |
format |
Report |
author |
Maar, Marie Butenschön, Momme Daewel, Ute Eggert, Anja Fan, Wei Hjøllo, Solfrid S. Hufnagl, Marc Huret, Martin Ji, Rubao Lacroix, Geneviève Peck, Myron A. Radtke, Hagen Sailley, Sevrine F. Sinerchia, Matteo Skogen, Morten D. Travers-Trolet, Morgane Troost, Tineke A. van de Wolfshaar, Karen |
author_facet |
Maar, Marie Butenschön, Momme Daewel, Ute Eggert, Anja Fan, Wei Hjøllo, Solfrid S. Hufnagl, Marc Huret, Martin Ji, Rubao Lacroix, Geneviève Peck, Myron A. Radtke, Hagen Sailley, Sevrine F. Sinerchia, Matteo Skogen, Morten D. Travers-Trolet, Morgane Troost, Tineke A. van de Wolfshaar, Karen |
author_sort |
Maar, Marie |
title |
Responses of summer phytoplankton biomass to changes in top-down forcing : insights from comparative modelling |
title_short |
Responses of summer phytoplankton biomass to changes in top-down forcing : insights from comparative modelling |
title_full |
Responses of summer phytoplankton biomass to changes in top-down forcing : insights from comparative modelling |
title_fullStr |
Responses of summer phytoplankton biomass to changes in top-down forcing : insights from comparative modelling |
title_full_unstemmed |
Responses of summer phytoplankton biomass to changes in top-down forcing : insights from comparative modelling |
title_sort |
responses of summer phytoplankton biomass to changes in top-down forcing : insights from comparative modelling |
publishDate |
2018 |
url |
https://hdl.handle.net/1912/10376 |
genre |
Nordic Seas |
genre_facet |
Nordic Seas |
op_relation |
https://doi.org/10.1016/j.ecolmodel.2018.03.003 https://hdl.handle.net/1912/10376 |
op_doi |
https://doi.org/10.1016/j.ecolmodel.2018.03.003 |
container_title |
Ecological Modelling |
container_volume |
376 |
container_start_page |
54 |
op_container_end_page |
67 |
_version_ |
1766115388945334272 |