Assessing drivers of coastal primary production in northern Marguerite Bay, Antarctica
The coastal ocean of the climatically-sensitive west Antarctic Peninsula is experiencing changes in the physical and (photo)chemical properties that strongly affect the phytoplankton. Consequently, a shift from diatoms, pivotal in the Antarctic food web, to more mobile and smaller flagellates has be...
Published in: | Frontiers in Marine Science |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2017
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Online Access: | https://hdl.handle.net/11370/a0b52329-7d72-40c4-a84d-c2a43af72eb7 https://research.rug.nl/en/publications/a0b52329-7d72-40c4-a84d-c2a43af72eb7 https://doi.org/10.3389/fmars.2017.00184 https://pure.rug.nl/ws/files/42730911/Rozema_et_al_2017_rats_production_models.pdf |
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ftunigroningenpu:oai:pure.rug.nl:publications/a0b52329-7d72-40c4-a84d-c2a43af72eb7 2024-06-02T07:58:00+00:00 Assessing drivers of coastal primary production in northern Marguerite Bay, Antarctica Rozema, Patrick D. Kulk, Gemma Veldhuis, Michiel P. Buma, Anita G. J. Meredith, Michael P. van de Poll, Willem H. 2017-06-13 application/pdf https://hdl.handle.net/11370/a0b52329-7d72-40c4-a84d-c2a43af72eb7 https://research.rug.nl/en/publications/a0b52329-7d72-40c4-a84d-c2a43af72eb7 https://doi.org/10.3389/fmars.2017.00184 https://pure.rug.nl/ws/files/42730911/Rozema_et_al_2017_rats_production_models.pdf eng eng https://research.rug.nl/en/publications/a0b52329-7d72-40c4-a84d-c2a43af72eb7 info:eu-repo/semantics/openAccess Rozema , P D , Kulk , G , Veldhuis , M P , Buma , A G J , Meredith , M P & van de Poll , W H 2017 , ' Assessing drivers of coastal primary production in northern Marguerite Bay, Antarctica ' , Frontiers in Marine Science , vol. 4 , 184 . https://doi.org/10.3389/fmars.2017.00184 article 2017 ftunigroningenpu https://doi.org/10.3389/fmars.2017.00184 2024-05-07T20:04:25Z The coastal ocean of the climatically-sensitive west Antarctic Peninsula is experiencing changes in the physical and (photo)chemical properties that strongly affect the phytoplankton. Consequently, a shift from diatoms, pivotal in the Antarctic food web, to more mobile and smaller flagellates has been observed. We seek to identify the main drivers behind primary production (PP) without any assumptions beforehand to obtain the best possible model of PP. We employed a combination of field measurements and modeling to discern and quantify the influences of variability in physical, (photo)chemical and biological parameters on PP in northern Marguerite Bay. Field data of high-temporal resolution (November 2013 – March 2014) collected at a long-term monitoring site here were combined with estimates of PP derived from photosynthesis-irradiance incubations and modeled using mechanistic and statistical models. Daily PP varied greatly and averaged 1764 mg C m-2 d-1 with a maximum of 6908 mg C m-2 d-1 after the melting of sea ice and the likely release of diatoms concentrated therein. A non-assumptive random forest model (RF) with all possibly relevant parameters (MRFmax) showed that variability in PP was best explained by light availability and chlorophyll a followed by physical (temperature, mixed layer depth and salinity) and chemical (phosphate, total nitrogen and silicate) water column properties. The predictive power from the relative abundances of diatoms, cryptophytes and haptophytes (as determined by pigment fingerprinting) to PP was minimal. However, the variability in PP due to changes in species composition was most likely underestimated due to the contrasting strategies of these phytoplankton groups as we observed significant negative relations between PP and the relative abundance of flagellates groups. Our reduced model (MRFmin) showed how light availability, chlorophyll a and total nitrogen concentrations can be used to obtain the best estimate of PP (R2 = 0.93). The resulting estimates from our models ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice University of Groningen research database Antarctic Antarctic Peninsula Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) The Antarctic Frontiers in Marine Science 4 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
description |
The coastal ocean of the climatically-sensitive west Antarctic Peninsula is experiencing changes in the physical and (photo)chemical properties that strongly affect the phytoplankton. Consequently, a shift from diatoms, pivotal in the Antarctic food web, to more mobile and smaller flagellates has been observed. We seek to identify the main drivers behind primary production (PP) without any assumptions beforehand to obtain the best possible model of PP. We employed a combination of field measurements and modeling to discern and quantify the influences of variability in physical, (photo)chemical and biological parameters on PP in northern Marguerite Bay. Field data of high-temporal resolution (November 2013 – March 2014) collected at a long-term monitoring site here were combined with estimates of PP derived from photosynthesis-irradiance incubations and modeled using mechanistic and statistical models. Daily PP varied greatly and averaged 1764 mg C m-2 d-1 with a maximum of 6908 mg C m-2 d-1 after the melting of sea ice and the likely release of diatoms concentrated therein. A non-assumptive random forest model (RF) with all possibly relevant parameters (MRFmax) showed that variability in PP was best explained by light availability and chlorophyll a followed by physical (temperature, mixed layer depth and salinity) and chemical (phosphate, total nitrogen and silicate) water column properties. The predictive power from the relative abundances of diatoms, cryptophytes and haptophytes (as determined by pigment fingerprinting) to PP was minimal. However, the variability in PP due to changes in species composition was most likely underestimated due to the contrasting strategies of these phytoplankton groups as we observed significant negative relations between PP and the relative abundance of flagellates groups. Our reduced model (MRFmin) showed how light availability, chlorophyll a and total nitrogen concentrations can be used to obtain the best estimate of PP (R2 = 0.93). The resulting estimates from our models ... |
format |
Article in Journal/Newspaper |
author |
Rozema, Patrick D. Kulk, Gemma Veldhuis, Michiel P. Buma, Anita G. J. Meredith, Michael P. van de Poll, Willem H. |
spellingShingle |
Rozema, Patrick D. Kulk, Gemma Veldhuis, Michiel P. Buma, Anita G. J. Meredith, Michael P. van de Poll, Willem H. Assessing drivers of coastal primary production in northern Marguerite Bay, Antarctica |
author_facet |
Rozema, Patrick D. Kulk, Gemma Veldhuis, Michiel P. Buma, Anita G. J. Meredith, Michael P. van de Poll, Willem H. |
author_sort |
Rozema, Patrick D. |
title |
Assessing drivers of coastal primary production in northern Marguerite Bay, Antarctica |
title_short |
Assessing drivers of coastal primary production in northern Marguerite Bay, Antarctica |
title_full |
Assessing drivers of coastal primary production in northern Marguerite Bay, Antarctica |
title_fullStr |
Assessing drivers of coastal primary production in northern Marguerite Bay, Antarctica |
title_full_unstemmed |
Assessing drivers of coastal primary production in northern Marguerite Bay, Antarctica |
title_sort |
assessing drivers of coastal primary production in northern marguerite bay, antarctica |
publishDate |
2017 |
url |
https://hdl.handle.net/11370/a0b52329-7d72-40c4-a84d-c2a43af72eb7 https://research.rug.nl/en/publications/a0b52329-7d72-40c4-a84d-c2a43af72eb7 https://doi.org/10.3389/fmars.2017.00184 https://pure.rug.nl/ws/files/42730911/Rozema_et_al_2017_rats_production_models.pdf |
long_lat |
ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) |
geographic |
Antarctic Antarctic Peninsula Marguerite Marguerite Bay The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Marguerite Marguerite Bay The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice |
op_source |
Rozema , P D , Kulk , G , Veldhuis , M P , Buma , A G J , Meredith , M P & van de Poll , W H 2017 , ' Assessing drivers of coastal primary production in northern Marguerite Bay, Antarctica ' , Frontiers in Marine Science , vol. 4 , 184 . https://doi.org/10.3389/fmars.2017.00184 |
op_relation |
https://research.rug.nl/en/publications/a0b52329-7d72-40c4-a84d-c2a43af72eb7 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmars.2017.00184 |
container_title |
Frontiers in Marine Science |
container_volume |
4 |
_version_ |
1800741246393647104 |