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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2014
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Online Access: | https://www.vliz.be/imisdocs/publications/08/266208.pdf |
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ftnioz:oai:imis.nioz.nl:242878 2023-05-15T17:49:49+02:00 Empirical evidence reveals seasonally dependent reduction in nitrification in coastal sediments subjected to near future ocean acidification Braeckman, U. Van Colen, C. Guilini, K. Van Gansbeke, D. Soetaert, K. Vincx, M. Vanaverbeke, J. 2014 application/pdf https://www.vliz.be/imisdocs/publications/08/266208.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000343210800008 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1371/journal.pone.0108153 https://www.vliz.be/imisdocs/publications/08/266208.pdf info:eu-repo/semantics/openAccess %3Ci%3EPLoS+One+9%2810%29%3C%2Fi%3E%3A+e108153.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1371%2Fjournal.pone.0108153%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1371%2Fjournal.pone.0108153%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2014 ftnioz https://doi.org/10.1371/journal.pone.0108153 2022-05-01T14:00:09Z 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 NIOZ Repository (Royal Netherlands Institute for Sea Research) PLoS ONE 9 10 e108153 |
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Open Polar |
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NIOZ Repository (Royal Netherlands Institute for Sea Research) |
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ftnioz |
language |
English |
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, U. Van Colen, C. Guilini, K. Van Gansbeke, D. Soetaert, K. Vincx, M. Vanaverbeke, J. |
spellingShingle |
Braeckman, U. Van Colen, C. Guilini, K. Van Gansbeke, D. Soetaert, K. Vincx, M. Vanaverbeke, J. Empirical evidence reveals seasonally dependent reduction in nitrification in coastal sediments subjected to near future ocean acidification |
author_facet |
Braeckman, U. Van Colen, C. Guilini, K. Van Gansbeke, D. Soetaert, K. Vincx, M. Vanaverbeke, J. |
author_sort |
Braeckman, U. |
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://www.vliz.be/imisdocs/publications/08/266208.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
%3Ci%3EPLoS+One+9%2810%29%3C%2Fi%3E%3A+e108153.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1371%2Fjournal.pone.0108153%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1371%2Fjournal.pone.0108153%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000343210800008 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1371/journal.pone.0108153 https://www.vliz.be/imisdocs/publications/08/266208.pdf |
op_rights |
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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