Biological responses of the marine diatom Chaetoceros socialis to changing environmental conditions: a laboratory experiment
Diatoms constitute a major group of phytoplankton, accounting for ~20% of the world’s primary production. It has been shown that iron (Fe) can be the limiting factor for phytoplankton growth, in particular, in the HNLC (High Nutrient Low Chlorophyll) regions. Iron plays thus an essential role in gov...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/261149 2023-05-15T17:51:52+02:00 Biological responses of the marine diatom Chaetoceros socialis to changing environmental conditions: a laboratory experiment Li, Xuefeng Roevros, Nathalie Dehairs, F. Chou, Lei 2017 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/261149 https://dipot.ulb.ac.be/dspace/bitstream/2013/261149/3/doi_244776.pdf en eng uri/info:doi/10.1371/journal.pone.0188615 uri/info:pmid/29190826 uri/info:scp/85036555406 https://dipot.ulb.ac.be/dspace/bitstream/2013/261149/3/doi_244776.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/261149 1 full-text file(s): info:eu-repo/semantics/openAccess PloS one Océanographie physique et chimique Océanographie biologique Géochimie info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2017 ftunivbruxelles 2022-06-12T21:45:20Z Diatoms constitute a major group of phytoplankton, accounting for ~20% of the world’s primary production. It has been shown that iron (Fe) can be the limiting factor for phytoplankton growth, in particular, in the HNLC (High Nutrient Low Chlorophyll) regions. Iron plays thus an essential role in governing the marine primary productivity and the efficiency of biological carbon pump. Oceanic systems are undergoing continuous modifications at varying rates and magnitudes as a result of changing climate. The objective of our research is to evaluate how changing environmental conditions (dust deposition, ocean warming and acidification) can affect marine Fe biogeochemistry and diatom growth. Laboratory culture experiments using a marine diatom Chaetoceros socialis were conducted at two temperatures (13C and 18C) and under two pCO2 (carbon dioxide partial pressure) (400 μatm and 800 μatm) conditions. The present study clearly highlights the effect of ocean acidification on enhancing the release of Fe upon dust deposition. Our results also confirm that being a potential source of Fe, dust provides in addition a readily utilizable source of macronutrients such as dissolved phosphate (PO4) and silicate (DSi). However, elevated atmospheric CO2 concentrations may also have an adverse impact on diatom growth, causing a decrease in cell size and possible further changes in phytoplankton composition. Meanwhile, ocean warming may lead to the reduction of diatom production and cell size, inducing poleward shifts in the biogeographic distribution of diatoms. The changing climate has thus a significant implication for ocean phytoplankton growth, cell size and primary productivity, phytoplankton distribution and community composition, and carbon (C), nitrogen (N), phosphorus (P), silicon (Si) and Fe biogeochemical cycles in various ways. SCOPUS: ar.j info:eu-repo/semantics/inPress Article in Journal/Newspaper Ocean acidification DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Océanographie physique et chimique Océanographie biologique Géochimie |
spellingShingle |
Océanographie physique et chimique Océanographie biologique Géochimie Li, Xuefeng Roevros, Nathalie Dehairs, F. Chou, Lei Biological responses of the marine diatom Chaetoceros socialis to changing environmental conditions: a laboratory experiment |
topic_facet |
Océanographie physique et chimique Océanographie biologique Géochimie |
description |
Diatoms constitute a major group of phytoplankton, accounting for ~20% of the world’s primary production. It has been shown that iron (Fe) can be the limiting factor for phytoplankton growth, in particular, in the HNLC (High Nutrient Low Chlorophyll) regions. Iron plays thus an essential role in governing the marine primary productivity and the efficiency of biological carbon pump. Oceanic systems are undergoing continuous modifications at varying rates and magnitudes as a result of changing climate. The objective of our research is to evaluate how changing environmental conditions (dust deposition, ocean warming and acidification) can affect marine Fe biogeochemistry and diatom growth. Laboratory culture experiments using a marine diatom Chaetoceros socialis were conducted at two temperatures (13C and 18C) and under two pCO2 (carbon dioxide partial pressure) (400 μatm and 800 μatm) conditions. The present study clearly highlights the effect of ocean acidification on enhancing the release of Fe upon dust deposition. Our results also confirm that being a potential source of Fe, dust provides in addition a readily utilizable source of macronutrients such as dissolved phosphate (PO4) and silicate (DSi). However, elevated atmospheric CO2 concentrations may also have an adverse impact on diatom growth, causing a decrease in cell size and possible further changes in phytoplankton composition. Meanwhile, ocean warming may lead to the reduction of diatom production and cell size, inducing poleward shifts in the biogeographic distribution of diatoms. The changing climate has thus a significant implication for ocean phytoplankton growth, cell size and primary productivity, phytoplankton distribution and community composition, and carbon (C), nitrogen (N), phosphorus (P), silicon (Si) and Fe biogeochemical cycles in various ways. SCOPUS: ar.j info:eu-repo/semantics/inPress |
format |
Article in Journal/Newspaper |
author |
Li, Xuefeng Roevros, Nathalie Dehairs, F. Chou, Lei |
author_facet |
Li, Xuefeng Roevros, Nathalie Dehairs, F. Chou, Lei |
author_sort |
Li, Xuefeng |
title |
Biological responses of the marine diatom Chaetoceros socialis to changing environmental conditions: a laboratory experiment |
title_short |
Biological responses of the marine diatom Chaetoceros socialis to changing environmental conditions: a laboratory experiment |
title_full |
Biological responses of the marine diatom Chaetoceros socialis to changing environmental conditions: a laboratory experiment |
title_fullStr |
Biological responses of the marine diatom Chaetoceros socialis to changing environmental conditions: a laboratory experiment |
title_full_unstemmed |
Biological responses of the marine diatom Chaetoceros socialis to changing environmental conditions: a laboratory experiment |
title_sort |
biological responses of the marine diatom chaetoceros socialis to changing environmental conditions: a laboratory experiment |
publishDate |
2017 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/261149 https://dipot.ulb.ac.be/dspace/bitstream/2013/261149/3/doi_244776.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
PloS one |
op_relation |
uri/info:doi/10.1371/journal.pone.0188615 uri/info:pmid/29190826 uri/info:scp/85036555406 https://dipot.ulb.ac.be/dspace/bitstream/2013/261149/3/doi_244776.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/261149 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/openAccess |
_version_ |
1766159157824585728 |