Nutrient pollution disrupts key ecosystem functions on coral reefs
There is a long history of examining the impacts of nutrient pollution and pH on coral reefs. However, little is known about how these two stressors interact and influence coral reef ecosystem functioning. Using a six-week nutrient addition experiment, we measured the impact of elevated nitrate (NO(...
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ftpubmed:oai:pubmedcentral.nih.gov:6015861 2023-05-15T17:51:25+02:00 Nutrient pollution disrupts key ecosystem functions on coral reefs Silbiger, Nyssa J. Nelson, Craig E. Remple, Kristina Sevilla, Jessica K. Quinlan, Zachary A. Putnam, Hollie M. Fox, Michael D. Donahue, Megan J. 2018-06-13 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6015861/ http://www.ncbi.nlm.nih.gov/pubmed/29875294 https://doi.org/10.1098/rspb.2017.2718 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6015861/ http://www.ncbi.nlm.nih.gov/pubmed/29875294 http://dx.doi.org/10.1098/rspb.2017.2718 © 2018 The Author(s) http://royalsocietypublishing.org/licence Published by the Royal Society. All rights reserved. Global Change and Conservation Text 2018 ftpubmed https://doi.org/10.1098/rspb.2017.2718 2019-06-16T00:08:36Z There is a long history of examining the impacts of nutrient pollution and pH on coral reefs. However, little is known about how these two stressors interact and influence coral reef ecosystem functioning. Using a six-week nutrient addition experiment, we measured the impact of elevated nitrate (NO(−)(3)) and phosphate (PO(3−)(4)) on net community calcification (NCC) and net community production (NCP) rates of individual taxa and combined reef communities. Our study had four major outcomes: (i) NCC rates declined in response to nutrient addition in all substrate types, (ii) the mixed community switched from net calcification to net dissolution under medium and high nutrient conditions, (iii) nutrients augmented pH variability through modified photosynthesis and respiration rates, and (iv) nutrients disrupted the relationship between NCC and aragonite saturation state documented in ambient conditions. These results indicate that the negative effect of NO(−)(3) and PO(3−)(4) addition on reef calcification is likely both a direct physiological response to nutrients and also an indirect response to a shifting pH environment from altered NCP rates. Here, we show that nutrient pollution could make reefs more vulnerable to global changes associated with ocean acidification and accelerate the predicted shift from net accretion to net erosion. Text Ocean acidification PubMed Central (PMC) Proceedings of the Royal Society B: Biological Sciences 285 1880 20172718 |
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English |
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Global Change and Conservation |
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Global Change and Conservation Silbiger, Nyssa J. Nelson, Craig E. Remple, Kristina Sevilla, Jessica K. Quinlan, Zachary A. Putnam, Hollie M. Fox, Michael D. Donahue, Megan J. Nutrient pollution disrupts key ecosystem functions on coral reefs |
topic_facet |
Global Change and Conservation |
description |
There is a long history of examining the impacts of nutrient pollution and pH on coral reefs. However, little is known about how these two stressors interact and influence coral reef ecosystem functioning. Using a six-week nutrient addition experiment, we measured the impact of elevated nitrate (NO(−)(3)) and phosphate (PO(3−)(4)) on net community calcification (NCC) and net community production (NCP) rates of individual taxa and combined reef communities. Our study had four major outcomes: (i) NCC rates declined in response to nutrient addition in all substrate types, (ii) the mixed community switched from net calcification to net dissolution under medium and high nutrient conditions, (iii) nutrients augmented pH variability through modified photosynthesis and respiration rates, and (iv) nutrients disrupted the relationship between NCC and aragonite saturation state documented in ambient conditions. These results indicate that the negative effect of NO(−)(3) and PO(3−)(4) addition on reef calcification is likely both a direct physiological response to nutrients and also an indirect response to a shifting pH environment from altered NCP rates. Here, we show that nutrient pollution could make reefs more vulnerable to global changes associated with ocean acidification and accelerate the predicted shift from net accretion to net erosion. |
format |
Text |
author |
Silbiger, Nyssa J. Nelson, Craig E. Remple, Kristina Sevilla, Jessica K. Quinlan, Zachary A. Putnam, Hollie M. Fox, Michael D. Donahue, Megan J. |
author_facet |
Silbiger, Nyssa J. Nelson, Craig E. Remple, Kristina Sevilla, Jessica K. Quinlan, Zachary A. Putnam, Hollie M. Fox, Michael D. Donahue, Megan J. |
author_sort |
Silbiger, Nyssa J. |
title |
Nutrient pollution disrupts key ecosystem functions on coral reefs |
title_short |
Nutrient pollution disrupts key ecosystem functions on coral reefs |
title_full |
Nutrient pollution disrupts key ecosystem functions on coral reefs |
title_fullStr |
Nutrient pollution disrupts key ecosystem functions on coral reefs |
title_full_unstemmed |
Nutrient pollution disrupts key ecosystem functions on coral reefs |
title_sort |
nutrient pollution disrupts key ecosystem functions on coral reefs |
publisher |
The Royal Society |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6015861/ http://www.ncbi.nlm.nih.gov/pubmed/29875294 https://doi.org/10.1098/rspb.2017.2718 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6015861/ http://www.ncbi.nlm.nih.gov/pubmed/29875294 http://dx.doi.org/10.1098/rspb.2017.2718 |
op_rights |
© 2018 The Author(s) http://royalsocietypublishing.org/licence Published by the Royal Society. All rights reserved. |
op_doi |
https://doi.org/10.1098/rspb.2017.2718 |
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Proceedings of the Royal Society B: Biological Sciences |
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285 |
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1880 |
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20172718 |
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1766158552093687808 |