Pronounced seasonal and spatial variability in determinants of phytoplankton biomass dynamics along a near-offshore gradient in the southern North Sea
Marine phytoplankton biomass dynamics are affected by eutrophication, ocean warming, and ocean acidification. These changing abiotic conditions may impact phytoplankton biomass and its spatiotemporal dynamics. In this study, we used a nutrient-phytoplankton-zooplankton (NPZ) model to quantify the re...
Published in: | Journal of Marine Science and Engineering |
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Language: | English |
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2023
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ftunivgent:oai:archive.ugent.be:01HPGWXFW2PJHH6M0T5ZHRKTVM 2024-09-15T18:28:27+00:00 Pronounced seasonal and spatial variability in determinants of phytoplankton biomass dynamics along a near-offshore gradient in the southern North Sea Otero, Viviana Pint, Steven Deneudt, Klaas De Rijcke, Maarten Mortelmans, Jonas Schepers, Lennert Martin Cabrera, Patricia Sabbe, Koen Vyverman, Wim Vandegehuchte, Michiel Everaert, Gert 2023 application/pdf https://biblio.ugent.be/publication/01HPGWXFW2PJHH6M0T5ZHRKTVM http://hdl.handle.net/1854/LU-01HPGWXFW2PJHH6M0T5ZHRKTVM https://doi.org/10.3390/jmse11081510 https://biblio.ugent.be/publication/01HPGWXFW2PJHH6M0T5ZHRKTVM/file/01HPGX6FCVQ9V193PR35FGCFZF eng eng https://biblio.ugent.be/publication/01HPGWXFW2PJHH6M0T5ZHRKTVM http://hdl.handle.net/1854/LU-01HPGWXFW2PJHH6M0T5ZHRKTVM http://doi.org/10.3390/jmse11081510 https://biblio.ugent.be/publication/01HPGWXFW2PJHH6M0T5ZHRKTVM/file/01HPGX6FCVQ9V193PR35FGCFZF Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess JOURNAL OF MARINE SCIENCE AND ENGINEERING ISSN: 2077-1312 Biology and Life Sciences Ocean Engineering Water Science and Technology Civil and Structural Engineering primary production ecosystem model phytoplankton biomass dynamics environmental conditions SPRING BLOOM DYNAMICS COASTAL ZONE RELATIVE CONTRIBUTION CLASS ABUNDANCES BELGIAN PART BALTIC SEA ZOOPLANKTON NUTRIENT WATERS CHLOROPHYLL journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2023 ftunivgent https://doi.org/10.3390/jmse11081510 2024-07-10T16:00:37Z Marine phytoplankton biomass dynamics are affected by eutrophication, ocean warming, and ocean acidification. These changing abiotic conditions may impact phytoplankton biomass and its spatiotemporal dynamics. In this study, we used a nutrient-phytoplankton-zooplankton (NPZ) model to quantify the relative importance of the bottom-up and top-down determinants of phytoplankton biomass dynamics in the Belgian part of the North Sea (BPNS). Using four years (2014-2017) of monthly observations of nutrients, solar irradiance, sea surface temperature, chlorophyll-a, and zooplankton biomass at ten locations, we disentangled the monthly, seasonal, and yearly variation in phytoplankton biomass dynamics. To quantify how the relative importance of determinants changed along a near-offshore gradient, the analysis was performed for three spatial regions, i.e., the nearshore region (<10 km to the coastline), the midshore region (10-30 km), and the offshore region (>30 km). We found that, from year 2014 to 2017, the phytoplankton biomass dynamics ranged from 1.4 to 23.1 mg Chla m(-3). Phytoplankton biomass dynamics follow a general seasonal cycle, as is the case in other temperate regional seas, with a distinct spring bloom (5.3-23.1 mg Chla m(-3)) and a modest autumn bloom (2.9-5.4 mg Chla m(-3)). This classic bimodal bloom pattern was not observed between 2003 and 2010 in the BPNS. The seasonal pattern was most expressed in the nearshore region. The relative contribution of factors determining phytoplankton biomass dynamics varied spatially and temporally. Throughout a calendar year, solar irradiance and zooplankton grazing were the most influential determinants in all regions, i.e., they jointly explained 38-65% of the variation in the offshore region, 45-71% in the midshore region, and 56-77% in the nearshore region. In the near- and midshore regions, nutrients were the greatest limit on phytoplankton production in the month following the spring bloom (44-55%). Nutrients were a determinant throughout the year in the ... Article in Journal/Newspaper Ocean acidification Ghent University Academic Bibliography Journal of Marine Science and Engineering 11 8 1510 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Biology and Life Sciences Ocean Engineering Water Science and Technology Civil and Structural Engineering primary production ecosystem model phytoplankton biomass dynamics environmental conditions SPRING BLOOM DYNAMICS COASTAL ZONE RELATIVE CONTRIBUTION CLASS ABUNDANCES BELGIAN PART BALTIC SEA ZOOPLANKTON NUTRIENT WATERS CHLOROPHYLL |
spellingShingle |
Biology and Life Sciences Ocean Engineering Water Science and Technology Civil and Structural Engineering primary production ecosystem model phytoplankton biomass dynamics environmental conditions SPRING BLOOM DYNAMICS COASTAL ZONE RELATIVE CONTRIBUTION CLASS ABUNDANCES BELGIAN PART BALTIC SEA ZOOPLANKTON NUTRIENT WATERS CHLOROPHYLL Otero, Viviana Pint, Steven Deneudt, Klaas De Rijcke, Maarten Mortelmans, Jonas Schepers, Lennert Martin Cabrera, Patricia Sabbe, Koen Vyverman, Wim Vandegehuchte, Michiel Everaert, Gert Pronounced seasonal and spatial variability in determinants of phytoplankton biomass dynamics along a near-offshore gradient in the southern North Sea |
topic_facet |
Biology and Life Sciences Ocean Engineering Water Science and Technology Civil and Structural Engineering primary production ecosystem model phytoplankton biomass dynamics environmental conditions SPRING BLOOM DYNAMICS COASTAL ZONE RELATIVE CONTRIBUTION CLASS ABUNDANCES BELGIAN PART BALTIC SEA ZOOPLANKTON NUTRIENT WATERS CHLOROPHYLL |
description |
Marine phytoplankton biomass dynamics are affected by eutrophication, ocean warming, and ocean acidification. These changing abiotic conditions may impact phytoplankton biomass and its spatiotemporal dynamics. In this study, we used a nutrient-phytoplankton-zooplankton (NPZ) model to quantify the relative importance of the bottom-up and top-down determinants of phytoplankton biomass dynamics in the Belgian part of the North Sea (BPNS). Using four years (2014-2017) of monthly observations of nutrients, solar irradiance, sea surface temperature, chlorophyll-a, and zooplankton biomass at ten locations, we disentangled the monthly, seasonal, and yearly variation in phytoplankton biomass dynamics. To quantify how the relative importance of determinants changed along a near-offshore gradient, the analysis was performed for three spatial regions, i.e., the nearshore region (<10 km to the coastline), the midshore region (10-30 km), and the offshore region (>30 km). We found that, from year 2014 to 2017, the phytoplankton biomass dynamics ranged from 1.4 to 23.1 mg Chla m(-3). Phytoplankton biomass dynamics follow a general seasonal cycle, as is the case in other temperate regional seas, with a distinct spring bloom (5.3-23.1 mg Chla m(-3)) and a modest autumn bloom (2.9-5.4 mg Chla m(-3)). This classic bimodal bloom pattern was not observed between 2003 and 2010 in the BPNS. The seasonal pattern was most expressed in the nearshore region. The relative contribution of factors determining phytoplankton biomass dynamics varied spatially and temporally. Throughout a calendar year, solar irradiance and zooplankton grazing were the most influential determinants in all regions, i.e., they jointly explained 38-65% of the variation in the offshore region, 45-71% in the midshore region, and 56-77% in the nearshore region. In the near- and midshore regions, nutrients were the greatest limit on phytoplankton production in the month following the spring bloom (44-55%). Nutrients were a determinant throughout the year in the ... |
format |
Article in Journal/Newspaper |
author |
Otero, Viviana Pint, Steven Deneudt, Klaas De Rijcke, Maarten Mortelmans, Jonas Schepers, Lennert Martin Cabrera, Patricia Sabbe, Koen Vyverman, Wim Vandegehuchte, Michiel Everaert, Gert |
author_facet |
Otero, Viviana Pint, Steven Deneudt, Klaas De Rijcke, Maarten Mortelmans, Jonas Schepers, Lennert Martin Cabrera, Patricia Sabbe, Koen Vyverman, Wim Vandegehuchte, Michiel Everaert, Gert |
author_sort |
Otero, Viviana |
title |
Pronounced seasonal and spatial variability in determinants of phytoplankton biomass dynamics along a near-offshore gradient in the southern North Sea |
title_short |
Pronounced seasonal and spatial variability in determinants of phytoplankton biomass dynamics along a near-offshore gradient in the southern North Sea |
title_full |
Pronounced seasonal and spatial variability in determinants of phytoplankton biomass dynamics along a near-offshore gradient in the southern North Sea |
title_fullStr |
Pronounced seasonal and spatial variability in determinants of phytoplankton biomass dynamics along a near-offshore gradient in the southern North Sea |
title_full_unstemmed |
Pronounced seasonal and spatial variability in determinants of phytoplankton biomass dynamics along a near-offshore gradient in the southern North Sea |
title_sort |
pronounced seasonal and spatial variability in determinants of phytoplankton biomass dynamics along a near-offshore gradient in the southern north sea |
publishDate |
2023 |
url |
https://biblio.ugent.be/publication/01HPGWXFW2PJHH6M0T5ZHRKTVM http://hdl.handle.net/1854/LU-01HPGWXFW2PJHH6M0T5ZHRKTVM https://doi.org/10.3390/jmse11081510 https://biblio.ugent.be/publication/01HPGWXFW2PJHH6M0T5ZHRKTVM/file/01HPGX6FCVQ9V193PR35FGCFZF |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
JOURNAL OF MARINE SCIENCE AND ENGINEERING ISSN: 2077-1312 |
op_relation |
https://biblio.ugent.be/publication/01HPGWXFW2PJHH6M0T5ZHRKTVM http://hdl.handle.net/1854/LU-01HPGWXFW2PJHH6M0T5ZHRKTVM http://doi.org/10.3390/jmse11081510 https://biblio.ugent.be/publication/01HPGWXFW2PJHH6M0T5ZHRKTVM/file/01HPGX6FCVQ9V193PR35FGCFZF |
op_rights |
Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3390/jmse11081510 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
11 |
container_issue |
8 |
container_start_page |
1510 |
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1810469816627101696 |