Phytoplankton interactions can alter species response to present and future Co2 concentrations
Ocean acidification is a direct consequence of carbon dioxide (CO2) dissolution in seawater and has the potential to impact marine phytoplankton. Although community composition and species interactions may be affected, few studies have taken the latter into account. Here, we assessed how species int...
Published in: | Marine Ecology Progress Series |
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Online Access: | https://epubs.scu.edu.au/esm_pubs/3331 https://doi.org/10.3354/meps12197 |
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ftsoutherncu:oai:epubs.scu.edu.au:esm_pubs-4359 2023-05-15T17:51:44+02:00 Phytoplankton interactions can alter species response to present and future Co2 concentrations Sampaio, Eduardo Gallo, Fransesca Schulz, Kai G Azevedo, Eduardo b Barcelos e Ramos, Joana 2017-01-01T08:00:00Z https://epubs.scu.edu.au/esm_pubs/3331 https://doi.org/10.3354/meps12197 unknown ePublications@SCU School of Environment, Science and Engineering Papers Species interaction phytoplankton CO2 Biomass ratios growth rates cellular quotas chain length Environmental Sciences article 2017 ftsoutherncu https://doi.org/10.3354/meps12197 2019-08-06T13:10:34Z Ocean acidification is a direct consequence of carbon dioxide (CO2) dissolution in seawater and has the potential to impact marine phytoplankton. Although community composition and species interactions may be affected, few studies have taken the latter into account. Here, we assessed how species interactions and competition shape physiological responses by testing monospecific and mixed cultures of (1) the haptophyte Phaeocystis globosa and the chain-forming diatoms Chaetoceros sp. and Asterionellopsis glacialis under present CO2 levels, and (2) Chaetoceros sp. and P. globosa under increasing CO2. The interactions established between the 3 phytoplankton cultures were species- and abundance-dependent. The 2 diatoms did not interact; however, in the presence of P. globosa the growth rates of A. glacialis decreased and those of Chaetoceros sp. increased (depending on a Chaetoceros sp. abundance threshold). Conversely, when Chaetoceros sp. was reasonably abundant, P. globosa was also positively affected (alternating between an abundance/biomass-dependent commensalistic and/or mutualistic interaction). Under enhanced CO2 concentrations, the responses of Chaetoceros sp. and P. globosa mixed cultures were altered, mainly due to Chaetoceros sp. showing a physiological optimum at higher CO2 concentrations than P. globosa. While P. globosa was hindered by increased CO2, Chaetoceros sp. registered augmentation of growth rates, chain length and cellular elemental quotas up to ~750 µatm. Our work emphasizes the role of species interactions when addressing effects of enhanced CO2 on marine phytoplankton. Species-specific response trends to increasing CO2 concentrations revealed significant alterations to species interaction and biomass build-up, which may consequently affect future phytoplankton communities’ composition and dynamics. Article in Journal/Newspaper Ocean acidification Southern Cross University: epublications@SCU Marine Ecology Progress Series 575 31 42 |
institution |
Open Polar |
collection |
Southern Cross University: epublications@SCU |
op_collection_id |
ftsoutherncu |
language |
unknown |
topic |
Species interaction phytoplankton CO2 Biomass ratios growth rates cellular quotas chain length Environmental Sciences |
spellingShingle |
Species interaction phytoplankton CO2 Biomass ratios growth rates cellular quotas chain length Environmental Sciences Sampaio, Eduardo Gallo, Fransesca Schulz, Kai G Azevedo, Eduardo b Barcelos e Ramos, Joana Phytoplankton interactions can alter species response to present and future Co2 concentrations |
topic_facet |
Species interaction phytoplankton CO2 Biomass ratios growth rates cellular quotas chain length Environmental Sciences |
description |
Ocean acidification is a direct consequence of carbon dioxide (CO2) dissolution in seawater and has the potential to impact marine phytoplankton. Although community composition and species interactions may be affected, few studies have taken the latter into account. Here, we assessed how species interactions and competition shape physiological responses by testing monospecific and mixed cultures of (1) the haptophyte Phaeocystis globosa and the chain-forming diatoms Chaetoceros sp. and Asterionellopsis glacialis under present CO2 levels, and (2) Chaetoceros sp. and P. globosa under increasing CO2. The interactions established between the 3 phytoplankton cultures were species- and abundance-dependent. The 2 diatoms did not interact; however, in the presence of P. globosa the growth rates of A. glacialis decreased and those of Chaetoceros sp. increased (depending on a Chaetoceros sp. abundance threshold). Conversely, when Chaetoceros sp. was reasonably abundant, P. globosa was also positively affected (alternating between an abundance/biomass-dependent commensalistic and/or mutualistic interaction). Under enhanced CO2 concentrations, the responses of Chaetoceros sp. and P. globosa mixed cultures were altered, mainly due to Chaetoceros sp. showing a physiological optimum at higher CO2 concentrations than P. globosa. While P. globosa was hindered by increased CO2, Chaetoceros sp. registered augmentation of growth rates, chain length and cellular elemental quotas up to ~750 µatm. Our work emphasizes the role of species interactions when addressing effects of enhanced CO2 on marine phytoplankton. Species-specific response trends to increasing CO2 concentrations revealed significant alterations to species interaction and biomass build-up, which may consequently affect future phytoplankton communities’ composition and dynamics. |
format |
Article in Journal/Newspaper |
author |
Sampaio, Eduardo Gallo, Fransesca Schulz, Kai G Azevedo, Eduardo b Barcelos e Ramos, Joana |
author_facet |
Sampaio, Eduardo Gallo, Fransesca Schulz, Kai G Azevedo, Eduardo b Barcelos e Ramos, Joana |
author_sort |
Sampaio, Eduardo |
title |
Phytoplankton interactions can alter species response to present and future Co2 concentrations |
title_short |
Phytoplankton interactions can alter species response to present and future Co2 concentrations |
title_full |
Phytoplankton interactions can alter species response to present and future Co2 concentrations |
title_fullStr |
Phytoplankton interactions can alter species response to present and future Co2 concentrations |
title_full_unstemmed |
Phytoplankton interactions can alter species response to present and future Co2 concentrations |
title_sort |
phytoplankton interactions can alter species response to present and future co2 concentrations |
publisher |
ePublications@SCU |
publishDate |
2017 |
url |
https://epubs.scu.edu.au/esm_pubs/3331 https://doi.org/10.3354/meps12197 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
School of Environment, Science and Engineering Papers |
op_doi |
https://doi.org/10.3354/meps12197 |
container_title |
Marine Ecology Progress Series |
container_volume |
575 |
container_start_page |
31 |
op_container_end_page |
42 |
_version_ |
1766158976329711616 |