Interplay between eutrophication and climate warming on bacterial communities in coastal sediments differs depending on water depth and oxygen history

Abstract Coastal aquatic systems suffer from nutrient enrichment, which results in accelerated eutrophication effects due to increased microbial metabolic rates. Climate change related prolonged warming will likely accelerate existing eutrophication effects, including low oxygen concentrations. Howe...

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Autores principales:	Laura Seidel, Elias Broman, Stephanie Turner, Magnus Ståhle, Mark Dopson
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1b721ffe436b47dfaafa10372bb981bf
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spelling	oai:doaj.org-article:1b721ffe436b47dfaafa10372bb981bf2021-12-05T12:14:59ZInterplay between eutrophication and climate warming on bacterial communities in coastal sediments differs depending on water depth and oxygen history10.1038/s41598-021-02725-x2045-2322https://doaj.org/article/1b721ffe436b47dfaafa10372bb981bf2021-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02725-xhttps://doaj.org/toc/2045-2322Abstract Coastal aquatic systems suffer from nutrient enrichment, which results in accelerated eutrophication effects due to increased microbial metabolic rates. Climate change related prolonged warming will likely accelerate existing eutrophication effects, including low oxygen concentrations. However, how the interplay between these environmental changes will alter coastal ecosystems is poorly understood. In this study, we compared 16S rRNA gene amplicon based bacterial communities in coastal sediments of a Baltic Sea basin in November 2013 and 2017 at three sites along a water depth gradient with varying bottom water oxygen histories. The shallow site showed changes of only 1.1% in relative abundance of bacterial populations in 2017 compared to 2013, while the deep oxygen-deficient site showed up to 11% changes in relative abundance including an increase of sulfate-reducing bacteria along with a 36% increase in organic matter content. The data suggested that bacterial communities in shallow sediments were more resilient to seasonal oxygen decline, while bacterial communities in sediments subjected to long-term hypoxia seemed to be sensitive to oxygen changes and were likely to be under hypoxic/anoxic conditions in the future. Our data demonstrate that future climate changes will likely fuel eutrophication related spread of low oxygen zones.Laura SeidelElias BromanStephanie TurnerMagnus StåhleMark DopsonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Laura Seidel Elias Broman Stephanie Turner Magnus Ståhle Mark Dopson Interplay between eutrophication and climate warming on bacterial communities in coastal sediments differs depending on water depth and oxygen history
description	Abstract Coastal aquatic systems suffer from nutrient enrichment, which results in accelerated eutrophication effects due to increased microbial metabolic rates. Climate change related prolonged warming will likely accelerate existing eutrophication effects, including low oxygen concentrations. However, how the interplay between these environmental changes will alter coastal ecosystems is poorly understood. In this study, we compared 16S rRNA gene amplicon based bacterial communities in coastal sediments of a Baltic Sea basin in November 2013 and 2017 at three sites along a water depth gradient with varying bottom water oxygen histories. The shallow site showed changes of only 1.1% in relative abundance of bacterial populations in 2017 compared to 2013, while the deep oxygen-deficient site showed up to 11% changes in relative abundance including an increase of sulfate-reducing bacteria along with a 36% increase in organic matter content. The data suggested that bacterial communities in shallow sediments were more resilient to seasonal oxygen decline, while bacterial communities in sediments subjected to long-term hypoxia seemed to be sensitive to oxygen changes and were likely to be under hypoxic/anoxic conditions in the future. Our data demonstrate that future climate changes will likely fuel eutrophication related spread of low oxygen zones.
format	article
author	Laura Seidel Elias Broman Stephanie Turner Magnus Ståhle Mark Dopson
author_facet	Laura Seidel Elias Broman Stephanie Turner Magnus Ståhle Mark Dopson
author_sort	Laura Seidel
title	Interplay between eutrophication and climate warming on bacterial communities in coastal sediments differs depending on water depth and oxygen history
title_short	Interplay between eutrophication and climate warming on bacterial communities in coastal sediments differs depending on water depth and oxygen history
title_full	Interplay between eutrophication and climate warming on bacterial communities in coastal sediments differs depending on water depth and oxygen history
title_fullStr	Interplay between eutrophication and climate warming on bacterial communities in coastal sediments differs depending on water depth and oxygen history
title_full_unstemmed	Interplay between eutrophication and climate warming on bacterial communities in coastal sediments differs depending on water depth and oxygen history
title_sort	interplay between eutrophication and climate warming on bacterial communities in coastal sediments differs depending on water depth and oxygen history
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1b721ffe436b47dfaafa10372bb981bf
work_keys_str_mv	AT lauraseidel interplaybetweeneutrophicationandclimatewarmingonbacterialcommunitiesincoastalsedimentsdiffersdependingonwaterdepthandoxygenhistory AT eliasbroman interplaybetweeneutrophicationandclimatewarmingonbacterialcommunitiesincoastalsedimentsdiffersdependingonwaterdepthandoxygenhistory AT stephanieturner interplaybetweeneutrophicationandclimatewarmingonbacterialcommunitiesincoastalsedimentsdiffersdependingonwaterdepthandoxygenhistory AT magnusstahle interplaybetweeneutrophicationandclimatewarmingonbacterialcommunitiesincoastalsedimentsdiffersdependingonwaterdepthandoxygenhistory AT markdopson interplaybetweeneutrophicationandclimatewarmingonbacterialcommunitiesincoastalsedimentsdiffersdependingonwaterdepthandoxygenhistory
_version_	1718372119837933568

Interplay between eutrophication and climate warming on bacterial communities in coastal sediments differs depending on water depth and oxygen history

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