In situ effects of low pH and elevated HCO3- on juvenile Porites spp. in Moorea, French Polynesia
Juvenile colonies of massive Porites spp. were exposed to manipulated pH and bicarbonate ([HCO3???]) in situ to test the hypothesis that ocean acidification (OA) does not affect respiration and calcification. Incubations lasted 28 h and exposed corals to ambient temperature and light with ecological...
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Biological Bulletin
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ftcalifstateuniv:oai:dspace.calstate.edu:10211.3/201948 2023-05-15T17:50:04+02:00 In situ effects of low pH and elevated HCO3- on juvenile Porites spp. in Moorea, French Polynesia Edmunds, Peter J. Wall, Christopher Bennett 2013 http://hdl.handle.net/10211.3/201948 en eng Biological Bulletin doi.org/10.1086/BBLv225n2p92 Biological Bulletin 225(2), 92-101. (2013) 0006-3185 http://hdl.handle.net/10211.3/201948 copyright 2013 Marine Biological Laboratory porites spp ocean acidification Juvenile Porites spp Article 2013 ftcalifstateuniv https://doi.org/10.1086/BBLv225n2p92 2022-04-13T11:40:03Z Juvenile colonies of massive Porites spp. were exposed to manipulated pH and bicarbonate ([HCO3???]) in situ to test the hypothesis that ocean acidification (OA) does not affect respiration and calcification. Incubations lasted 28 h and exposed corals to ambient temperature and light with ecologically relevant water motion. Three treatments were applied: (1) ambient conditions of pH 8.04 and 1751 ??mol HCO3??? kg???1 (Treatment 1), (2) pCO2-induced ocean acidification of pH 7.73 and 2011 ??mol HCO3??? kg???1 (Treatment 2), and (3) pCO2 and HCO3???-enriched seawater of pH 7.69 and 2730 ??mol HCO3??? kg???1 (Treatment 3). The third treatment providing elevated [HCO3???] was used to test for stimulatory effects of dissolved inorganic carbon on calcification under low pH and low saturation of aragonite (??arag), but it does not reflect conditions expected to occur under CO2-driven OA. Calcification of juvenile massive Porites spp. was affected by treatments, with an 81% elevation in Treatment 3 versus Treatment 1, but no difference between Treatments 1 and 2; respiration and the metabolic expenditure concurrent with calcification remained unaffected. These findings indicate that juvenile massive Porites spp. are resistant to short exposures to OA in situ, and separately, that they can increase calcification at low pH and low ??arag if [HCO3???] is elevated. Juvenile Porites spp. may therefore be limited by dissolved inorganic carbon under ambient pCO2 conditions. Article in Journal/Newspaper Ocean acidification California State University (CSU): DSpace The Biological Bulletin 225 2 92 101 |
institution |
Open Polar |
collection |
California State University (CSU): DSpace |
op_collection_id |
ftcalifstateuniv |
language |
English |
topic |
porites spp ocean acidification Juvenile Porites spp |
spellingShingle |
porites spp ocean acidification Juvenile Porites spp Edmunds, Peter J. Wall, Christopher Bennett In situ effects of low pH and elevated HCO3- on juvenile Porites spp. in Moorea, French Polynesia |
topic_facet |
porites spp ocean acidification Juvenile Porites spp |
description |
Juvenile colonies of massive Porites spp. were exposed to manipulated pH and bicarbonate ([HCO3???]) in situ to test the hypothesis that ocean acidification (OA) does not affect respiration and calcification. Incubations lasted 28 h and exposed corals to ambient temperature and light with ecologically relevant water motion. Three treatments were applied: (1) ambient conditions of pH 8.04 and 1751 ??mol HCO3??? kg???1 (Treatment 1), (2) pCO2-induced ocean acidification of pH 7.73 and 2011 ??mol HCO3??? kg???1 (Treatment 2), and (3) pCO2 and HCO3???-enriched seawater of pH 7.69 and 2730 ??mol HCO3??? kg???1 (Treatment 3). The third treatment providing elevated [HCO3???] was used to test for stimulatory effects of dissolved inorganic carbon on calcification under low pH and low saturation of aragonite (??arag), but it does not reflect conditions expected to occur under CO2-driven OA. Calcification of juvenile massive Porites spp. was affected by treatments, with an 81% elevation in Treatment 3 versus Treatment 1, but no difference between Treatments 1 and 2; respiration and the metabolic expenditure concurrent with calcification remained unaffected. These findings indicate that juvenile massive Porites spp. are resistant to short exposures to OA in situ, and separately, that they can increase calcification at low pH and low ??arag if [HCO3???] is elevated. Juvenile Porites spp. may therefore be limited by dissolved inorganic carbon under ambient pCO2 conditions. |
format |
Article in Journal/Newspaper |
author |
Edmunds, Peter J. Wall, Christopher Bennett |
author_facet |
Edmunds, Peter J. Wall, Christopher Bennett |
author_sort |
Edmunds, Peter J. |
title |
In situ effects of low pH and elevated HCO3- on juvenile Porites spp. in Moorea, French Polynesia |
title_short |
In situ effects of low pH and elevated HCO3- on juvenile Porites spp. in Moorea, French Polynesia |
title_full |
In situ effects of low pH and elevated HCO3- on juvenile Porites spp. in Moorea, French Polynesia |
title_fullStr |
In situ effects of low pH and elevated HCO3- on juvenile Porites spp. in Moorea, French Polynesia |
title_full_unstemmed |
In situ effects of low pH and elevated HCO3- on juvenile Porites spp. in Moorea, French Polynesia |
title_sort |
in situ effects of low ph and elevated hco3- on juvenile porites spp. in moorea, french polynesia |
publisher |
Biological Bulletin |
publishDate |
2013 |
url |
http://hdl.handle.net/10211.3/201948 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
doi.org/10.1086/BBLv225n2p92 Biological Bulletin 225(2), 92-101. (2013) 0006-3185 http://hdl.handle.net/10211.3/201948 |
op_rights |
copyright 2013 Marine Biological Laboratory |
op_doi |
https://doi.org/10.1086/BBLv225n2p92 |
container_title |
The Biological Bulletin |
container_volume |
225 |
container_issue |
2 |
container_start_page |
92 |
op_container_end_page |
101 |
_version_ |
1766156646510231552 |