Empirical evidence reveals seasonally dependent reduction in nitrification in coastal sediments subjected to near future ocean acidification
Research so far has provided little evidence that benthic biogeochemical cycling is affected by ocean acidification under realistic climate change scenarios. We measured nutrient exchange and sediment community oxygen consumption (SCOC) rates to estimate nitrification in natural coastal permeable an...
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ftunivgent:oai:archive.ugent.be:5777478 2023-06-11T04:15:33+02:00 Empirical evidence reveals seasonally dependent reduction in nitrification in coastal sediments subjected to near future ocean acidification Braeckman, Ulrike Van Colen, Carl Guilini, Katja Van Gansbeke, Dirk Soetaert, Karline Vincx, Magda Vanaverbeke, Jan 2014 application/pdf https://biblio.ugent.be/publication/5777478 http://hdl.handle.net/1854/LU-5777478 https://doi.org/10.1371/journal.pone.0108153 https://biblio.ugent.be/publication/5777478/file/5777528 eng eng https://biblio.ugent.be/publication/5777478 http://hdl.handle.net/1854/LU-5777478 http://dx.doi.org/10.1371/journal.pone.0108153 https://biblio.ugent.be/publication/5777478/file/5777528 No license (in copyright) info:eu-repo/semantics/openAccess PLOS ONE ISSN: 1932-6203 Earth and Environmental Sciences NUTRIENT FLUXES IMPACT NORTH-SEA PH BURROWING URCHINS DENITRIFICATION SEAWATER ACIDIFICATION ECOSYSTEM FUNCTION CO2 TEMPERATURE journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2014 ftunivgent https://doi.org/10.1371/journal.pone.0108153 2023-05-10T22:24:00Z Research so far has provided little evidence that benthic biogeochemical cycling is affected by ocean acidification under realistic climate change scenarios. We measured nutrient exchange and sediment community oxygen consumption (SCOC) rates to estimate nitrification in natural coastal permeable and fine sandy sediments under pre-phytoplankton bloom and bloom conditions. Ocean acidification, as mimicked in the laboratory by a realistic pH decrease of 0.3, significantly reduced SCOC on average by 60% and benthic nitrification rates on average by 94% in both sediment types in February (pre-bloom period), but not in April (bloom period). No changes in macrofauna functional community (density, structural and functional diversity) were observed between ambient and acidified conditions, suggesting that changes in benthic biogeochemical cycling were predominantly mediated by changes in the activity of the microbial community during the short-term incubations (14 days), rather than by changes in engineering effects of bioturbating and bio-irrigating macrofauna. As benthic nitrification makes up the gross of ocean nitrification, a slowdown of this nitrogen cycling pathway in both permeable and fine sediments in winter, could therefore have global impacts on coupled nitrification-denitrification and hence eventually on pelagic nutrient availability. Article in Journal/Newspaper Ocean acidification Ghent University Academic Bibliography PLoS ONE 9 10 e108153 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences NUTRIENT FLUXES IMPACT NORTH-SEA PH BURROWING URCHINS DENITRIFICATION SEAWATER ACIDIFICATION ECOSYSTEM FUNCTION CO2 TEMPERATURE |
spellingShingle |
Earth and Environmental Sciences NUTRIENT FLUXES IMPACT NORTH-SEA PH BURROWING URCHINS DENITRIFICATION SEAWATER ACIDIFICATION ECOSYSTEM FUNCTION CO2 TEMPERATURE Braeckman, Ulrike Van Colen, Carl Guilini, Katja Van Gansbeke, Dirk Soetaert, Karline Vincx, Magda Vanaverbeke, Jan Empirical evidence reveals seasonally dependent reduction in nitrification in coastal sediments subjected to near future ocean acidification |
topic_facet |
Earth and Environmental Sciences NUTRIENT FLUXES IMPACT NORTH-SEA PH BURROWING URCHINS DENITRIFICATION SEAWATER ACIDIFICATION ECOSYSTEM FUNCTION CO2 TEMPERATURE |
description |
Research so far has provided little evidence that benthic biogeochemical cycling is affected by ocean acidification under realistic climate change scenarios. We measured nutrient exchange and sediment community oxygen consumption (SCOC) rates to estimate nitrification in natural coastal permeable and fine sandy sediments under pre-phytoplankton bloom and bloom conditions. Ocean acidification, as mimicked in the laboratory by a realistic pH decrease of 0.3, significantly reduced SCOC on average by 60% and benthic nitrification rates on average by 94% in both sediment types in February (pre-bloom period), but not in April (bloom period). No changes in macrofauna functional community (density, structural and functional diversity) were observed between ambient and acidified conditions, suggesting that changes in benthic biogeochemical cycling were predominantly mediated by changes in the activity of the microbial community during the short-term incubations (14 days), rather than by changes in engineering effects of bioturbating and bio-irrigating macrofauna. As benthic nitrification makes up the gross of ocean nitrification, a slowdown of this nitrogen cycling pathway in both permeable and fine sediments in winter, could therefore have global impacts on coupled nitrification-denitrification and hence eventually on pelagic nutrient availability. |
format |
Article in Journal/Newspaper |
author |
Braeckman, Ulrike Van Colen, Carl Guilini, Katja Van Gansbeke, Dirk Soetaert, Karline Vincx, Magda Vanaverbeke, Jan |
author_facet |
Braeckman, Ulrike Van Colen, Carl Guilini, Katja Van Gansbeke, Dirk Soetaert, Karline Vincx, Magda Vanaverbeke, Jan |
author_sort |
Braeckman, Ulrike |
title |
Empirical evidence reveals seasonally dependent reduction in nitrification in coastal sediments subjected to near future ocean acidification |
title_short |
Empirical evidence reveals seasonally dependent reduction in nitrification in coastal sediments subjected to near future ocean acidification |
title_full |
Empirical evidence reveals seasonally dependent reduction in nitrification in coastal sediments subjected to near future ocean acidification |
title_fullStr |
Empirical evidence reveals seasonally dependent reduction in nitrification in coastal sediments subjected to near future ocean acidification |
title_full_unstemmed |
Empirical evidence reveals seasonally dependent reduction in nitrification in coastal sediments subjected to near future ocean acidification |
title_sort |
empirical evidence reveals seasonally dependent reduction in nitrification in coastal sediments subjected to near future ocean acidification |
publishDate |
2014 |
url |
https://biblio.ugent.be/publication/5777478 http://hdl.handle.net/1854/LU-5777478 https://doi.org/10.1371/journal.pone.0108153 https://biblio.ugent.be/publication/5777478/file/5777528 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
PLOS ONE ISSN: 1932-6203 |
op_relation |
https://biblio.ugent.be/publication/5777478 http://hdl.handle.net/1854/LU-5777478 http://dx.doi.org/10.1371/journal.pone.0108153 https://biblio.ugent.be/publication/5777478/file/5777528 |
op_rights |
No license (in copyright) info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0108153 |
container_title |
PLoS ONE |
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9 |
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10 |
container_start_page |
e108153 |
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1768372454856589312 |