Ocean acidification accelerates dissolution of experimental coral reef communities
Ocean acidification (OA) poses a severe threat to tropical coral reefs, yet much of what is know about these effects comes from individual corals and algae incubated in isolation under high pCO2. Studies of similar effects on coral reef communities are scarce. To investigate the response of coral re...
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Biogeosciences
2015
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ftcalifstateuniv:oai:scholarworks:b8515s162 2024-09-30T14:40:40+00:00 Ocean acidification accelerates dissolution of experimental coral reef communities Steeve Comeau Robert C. Carpenter C. A. Lantz Peter J. Edmunds 2015 http://hdl.handle.net/10211.3/170983 English eng Biogeosciences http://hdl.handle.net/10211.3/170983 copyright Author(s) 2015 tropical coral reefs ocean acidification coral reef communities coral reefs Article 2015 ftcalifstateuniv 2024-09-10T17:06:14Z Ocean acidification (OA) poses a severe threat to tropical coral reefs, yet much of what is know about these effects comes from individual corals and algae incubated in isolation under high pCO2. Studies of similar effects on coral reef communities are scarce. To investigate the response of coral reef communities to OA, we used large outdoor flumes in which communities composed of calcified algae, corals, and sediment were combined to match the percentage cover of benthic communities in the shallow back reef of Moorea, French Polynesia. Reef communities in the flumes were exposed to ambient (~ 400 micro_atm) and high pCO2 (~ 1300 micro_atm) for 8 weeks, and calcification rates measured for the constructed communities including the sediments. Community calcification was reduced by 59% under high pCO2, with sediment dissolution explaining ~ 50% of this decrease net calcification of corals and calcified algae remained positive but was reduced by 29% under elevated pCO2. These results show that, despite the capacity of coral reef calcifiers to maintain positive net accretion of calcium carbonate under OA conditions, reef communities might transition to net dissolution as pCO2 increases, particularly at night, due to enhanced sediment dissolution. Biogeosciences 12(2), 365-372. (2015) 1726-4170 Article in Journal/Newspaper Ocean acidification Scholarworks from California State University |
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Open Polar |
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Scholarworks from California State University |
op_collection_id |
ftcalifstateuniv |
language |
English |
topic |
tropical coral reefs ocean acidification coral reef communities coral reefs |
spellingShingle |
tropical coral reefs ocean acidification coral reef communities coral reefs Steeve Comeau Robert C. Carpenter C. A. Lantz Peter J. Edmunds Ocean acidification accelerates dissolution of experimental coral reef communities |
topic_facet |
tropical coral reefs ocean acidification coral reef communities coral reefs |
description |
Ocean acidification (OA) poses a severe threat to tropical coral reefs, yet much of what is know about these effects comes from individual corals and algae incubated in isolation under high pCO2. Studies of similar effects on coral reef communities are scarce. To investigate the response of coral reef communities to OA, we used large outdoor flumes in which communities composed of calcified algae, corals, and sediment were combined to match the percentage cover of benthic communities in the shallow back reef of Moorea, French Polynesia. Reef communities in the flumes were exposed to ambient (~ 400 micro_atm) and high pCO2 (~ 1300 micro_atm) for 8 weeks, and calcification rates measured for the constructed communities including the sediments. Community calcification was reduced by 59% under high pCO2, with sediment dissolution explaining ~ 50% of this decrease net calcification of corals and calcified algae remained positive but was reduced by 29% under elevated pCO2. These results show that, despite the capacity of coral reef calcifiers to maintain positive net accretion of calcium carbonate under OA conditions, reef communities might transition to net dissolution as pCO2 increases, particularly at night, due to enhanced sediment dissolution. Biogeosciences 12(2), 365-372. (2015) 1726-4170 |
format |
Article in Journal/Newspaper |
author |
Steeve Comeau Robert C. Carpenter C. A. Lantz Peter J. Edmunds |
author_facet |
Steeve Comeau Robert C. Carpenter C. A. Lantz Peter J. Edmunds |
author_sort |
Steeve Comeau |
title |
Ocean acidification accelerates dissolution of experimental coral reef communities |
title_short |
Ocean acidification accelerates dissolution of experimental coral reef communities |
title_full |
Ocean acidification accelerates dissolution of experimental coral reef communities |
title_fullStr |
Ocean acidification accelerates dissolution of experimental coral reef communities |
title_full_unstemmed |
Ocean acidification accelerates dissolution of experimental coral reef communities |
title_sort |
ocean acidification accelerates dissolution of experimental coral reef communities |
publisher |
Biogeosciences |
publishDate |
2015 |
url |
http://hdl.handle.net/10211.3/170983 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://hdl.handle.net/10211.3/170983 |
op_rights |
copyright Author(s) 2015 |
_version_ |
1811643160687804416 |