Effects of Climate Change on Chlorophyll a in the Barents Sea: A Long-Term Assessment
The Arctic climate strongly affects phytoplankton production and biomass through several mechanisms, including warming, sea ice retreat, and global atmospheric processes. In order to detect the climatic changes in phytoplankton biomass, long-term variability of chlorophyll a (Chl-a) was estimated in...
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ftdoajarticles:oai:doaj.org/article:ae254179068648b19322e2538c899d20 2023-10-09T21:48:38+02:00 Effects of Climate Change on Chlorophyll a in the Barents Sea: A Long-Term Assessment Vladimir G. Dvoretsky Veronika V. Vodopianova Aleksandra S. Bulavina 2023-01-01T00:00:00Z https://doi.org/10.3390/biology12010119 https://doaj.org/article/ae254179068648b19322e2538c899d20 EN eng MDPI AG https://www.mdpi.com/2079-7737/12/1/119 https://doaj.org/toc/2079-7737 doi:10.3390/biology12010119 2079-7737 https://doaj.org/article/ae254179068648b19322e2538c899d20 Biology, Vol 12, Iss 119, p 119 (2023) phytoplankton climatic fluctuations warming Arctic Barents Sea generalized additive models Biology (General) QH301-705.5 article 2023 ftdoajarticles https://doi.org/10.3390/biology12010119 2023-09-10T00:41:03Z The Arctic climate strongly affects phytoplankton production and biomass through several mechanisms, including warming, sea ice retreat, and global atmospheric processes. In order to detect the climatic changes in phytoplankton biomass, long-term variability of chlorophyll a (Chl-a) was estimated in situ with the changes in the surface sea temperature (SST) and salinity (SSS) in the Barents Sea and adjacent waters during the period of 1984–2021. Spatial differences were detected in SST, SSS, and Chl-a. Chl-a increased parallel to SST in the summer-autumn and spring periods, respectively. Chl-a peaks were found near the ice edge and frontal zones in the spring season, while the highest measures were observed in the coastal regions during the summer seasons. SST and Chl-a demonstrated increasing trends with greater values during 2010–2020. Generalized additive models (GAMs) revealed that SST and Chl-a were positively related with year. Climatic and oceanographic variables explained significant proportions of the Chl-a fluctuations, with six predictors (SST, annual North Atlantic Oscillation index, temperature/salinity anomalies at the Kola Section, and sea ice extent in April and September) being the most important. GAMs showed close associations between increasing Chl-a and a decline in sea ice extent and rising water temperature. Our data may be useful for monitoring the Arctic regions during the era of global changes and provide a basis for future research on factors driving phytoplankton assemblages and primary productivity in the Barents Sea. Article in Journal/Newspaper Arctic Barents Sea Climate change North Atlantic North Atlantic oscillation Phytoplankton Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Barents Sea Biology 12 1 119 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
phytoplankton climatic fluctuations warming Arctic Barents Sea generalized additive models Biology (General) QH301-705.5 |
spellingShingle |
phytoplankton climatic fluctuations warming Arctic Barents Sea generalized additive models Biology (General) QH301-705.5 Vladimir G. Dvoretsky Veronika V. Vodopianova Aleksandra S. Bulavina Effects of Climate Change on Chlorophyll a in the Barents Sea: A Long-Term Assessment |
topic_facet |
phytoplankton climatic fluctuations warming Arctic Barents Sea generalized additive models Biology (General) QH301-705.5 |
description |
The Arctic climate strongly affects phytoplankton production and biomass through several mechanisms, including warming, sea ice retreat, and global atmospheric processes. In order to detect the climatic changes in phytoplankton biomass, long-term variability of chlorophyll a (Chl-a) was estimated in situ with the changes in the surface sea temperature (SST) and salinity (SSS) in the Barents Sea and adjacent waters during the period of 1984–2021. Spatial differences were detected in SST, SSS, and Chl-a. Chl-a increased parallel to SST in the summer-autumn and spring periods, respectively. Chl-a peaks were found near the ice edge and frontal zones in the spring season, while the highest measures were observed in the coastal regions during the summer seasons. SST and Chl-a demonstrated increasing trends with greater values during 2010–2020. Generalized additive models (GAMs) revealed that SST and Chl-a were positively related with year. Climatic and oceanographic variables explained significant proportions of the Chl-a fluctuations, with six predictors (SST, annual North Atlantic Oscillation index, temperature/salinity anomalies at the Kola Section, and sea ice extent in April and September) being the most important. GAMs showed close associations between increasing Chl-a and a decline in sea ice extent and rising water temperature. Our data may be useful for monitoring the Arctic regions during the era of global changes and provide a basis for future research on factors driving phytoplankton assemblages and primary productivity in the Barents Sea. |
format |
Article in Journal/Newspaper |
author |
Vladimir G. Dvoretsky Veronika V. Vodopianova Aleksandra S. Bulavina |
author_facet |
Vladimir G. Dvoretsky Veronika V. Vodopianova Aleksandra S. Bulavina |
author_sort |
Vladimir G. Dvoretsky |
title |
Effects of Climate Change on Chlorophyll a in the Barents Sea: A Long-Term Assessment |
title_short |
Effects of Climate Change on Chlorophyll a in the Barents Sea: A Long-Term Assessment |
title_full |
Effects of Climate Change on Chlorophyll a in the Barents Sea: A Long-Term Assessment |
title_fullStr |
Effects of Climate Change on Chlorophyll a in the Barents Sea: A Long-Term Assessment |
title_full_unstemmed |
Effects of Climate Change on Chlorophyll a in the Barents Sea: A Long-Term Assessment |
title_sort |
effects of climate change on chlorophyll a in the barents sea: a long-term assessment |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/biology12010119 https://doaj.org/article/ae254179068648b19322e2538c899d20 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Climate change North Atlantic North Atlantic oscillation Phytoplankton Sea ice |
genre_facet |
Arctic Barents Sea Climate change North Atlantic North Atlantic oscillation Phytoplankton Sea ice |
op_source |
Biology, Vol 12, Iss 119, p 119 (2023) |
op_relation |
https://www.mdpi.com/2079-7737/12/1/119 https://doaj.org/toc/2079-7737 doi:10.3390/biology12010119 2079-7737 https://doaj.org/article/ae254179068648b19322e2538c899d20 |
op_doi |
https://doi.org/10.3390/biology12010119 |
container_title |
Biology |
container_volume |
12 |
container_issue |
1 |
container_start_page |
119 |
_version_ |
1779311718704349184 |