Long-term effects of nutrient and CO2 enrichment on the temperate coral Astrangia poculata (Ellis and Solander, 1786)
Author Posting. © The Author(s), 2010. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Journal of Experimental Marine Biology and Ecology 386 (2010): 27-33, doi:10.1016/j...
Published in: | Journal of Experimental Marine Biology and Ecology |
---|---|
Main Authors: | , , |
Format: | Report |
Language: | English |
Published: |
2010
|
Subjects: | |
Online Access: | https://hdl.handle.net/1912/3636 |
id |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/3636 |
---|---|
record_format |
openpolar |
spelling |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/3636 2023-05-15T17:52:00+02:00 Long-term effects of nutrient and CO2 enrichment on the temperate coral Astrangia poculata (Ellis and Solander, 1786) Holcomb, Michael McCorkle, Daniel C. Cohen, Anne L. 2010-01-15 application/pdf https://hdl.handle.net/1912/3636 en_US eng https://doi.org/10.1016/j.jembe.2010.02.007 https://hdl.handle.net/1912/3636 Preprint 2010 ftwhoas https://doi.org/10.1016/j.jembe.2010.02.007 2022-05-28T22:58:02Z Author Posting. © The Author(s), 2010. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Journal of Experimental Marine Biology and Ecology 386 (2010): 27-33, doi:10.1016/j.jembe.2010.02.007. Zooxanthellate colonies of the scleractinian coral Astrangia poculata were grown under combinations of ambient and elevated nutrients (5 μM NO3 -, 0.3 μM PO4 -3, and 2 nM Fe+2) and CO2 (~780 ppmv) treatments for a period of 6 months. Coral calcification rates, estimated from buoyant weights, were not significantly affected by moderately elevated nutrients at ambient CO2 and were negatively affected by elevated CO2 at ambient nutrient levels. However, calcification by corals reared under elevated nutrients combined with elevated CO2 was not significantly different from that of corals reared under ambient conditions, suggesting that CO2 enrichment can lead to nutrient limitation in zooxanthellate corals. A conceptual model is proposed to explain how nutrients and CO2 interact to control zooxanthellate coral calcification. Nutrient limited corals are unable to utilize an increase in dissolved inorganic carbon (DIC) as nutrients are already limiting growth, thus the effect of elevated CO2 on saturation state drives the calcification response. Under nutrient replete conditions, corals may have the ability to utilize more DIC, thus the calcification response to CO2 becomes the product of a negative effect on saturation state and a positive effect on gross carbon fixation, depending upon which dominates, the calcification response can be either positive or negative. This may help explain how the range of coral responses found in different studies of ocean acidification can be obtained. Funding for this work was provided by the Ocean Life Institute, NSF OCE-0648157, and an International Society for Reef Studies / Ocean Conservancy Fellowship. This material is based upon work supported under a National ... Report Ocean acidification Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Journal of Experimental Marine Biology and Ecology 386 1-2 27 33 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
description |
Author Posting. © The Author(s), 2010. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Journal of Experimental Marine Biology and Ecology 386 (2010): 27-33, doi:10.1016/j.jembe.2010.02.007. Zooxanthellate colonies of the scleractinian coral Astrangia poculata were grown under combinations of ambient and elevated nutrients (5 μM NO3 -, 0.3 μM PO4 -3, and 2 nM Fe+2) and CO2 (~780 ppmv) treatments for a period of 6 months. Coral calcification rates, estimated from buoyant weights, were not significantly affected by moderately elevated nutrients at ambient CO2 and were negatively affected by elevated CO2 at ambient nutrient levels. However, calcification by corals reared under elevated nutrients combined with elevated CO2 was not significantly different from that of corals reared under ambient conditions, suggesting that CO2 enrichment can lead to nutrient limitation in zooxanthellate corals. A conceptual model is proposed to explain how nutrients and CO2 interact to control zooxanthellate coral calcification. Nutrient limited corals are unable to utilize an increase in dissolved inorganic carbon (DIC) as nutrients are already limiting growth, thus the effect of elevated CO2 on saturation state drives the calcification response. Under nutrient replete conditions, corals may have the ability to utilize more DIC, thus the calcification response to CO2 becomes the product of a negative effect on saturation state and a positive effect on gross carbon fixation, depending upon which dominates, the calcification response can be either positive or negative. This may help explain how the range of coral responses found in different studies of ocean acidification can be obtained. Funding for this work was provided by the Ocean Life Institute, NSF OCE-0648157, and an International Society for Reef Studies / Ocean Conservancy Fellowship. This material is based upon work supported under a National ... |
format |
Report |
author |
Holcomb, Michael McCorkle, Daniel C. Cohen, Anne L. |
spellingShingle |
Holcomb, Michael McCorkle, Daniel C. Cohen, Anne L. Long-term effects of nutrient and CO2 enrichment on the temperate coral Astrangia poculata (Ellis and Solander, 1786) |
author_facet |
Holcomb, Michael McCorkle, Daniel C. Cohen, Anne L. |
author_sort |
Holcomb, Michael |
title |
Long-term effects of nutrient and CO2 enrichment on the temperate coral Astrangia poculata (Ellis and Solander, 1786) |
title_short |
Long-term effects of nutrient and CO2 enrichment on the temperate coral Astrangia poculata (Ellis and Solander, 1786) |
title_full |
Long-term effects of nutrient and CO2 enrichment on the temperate coral Astrangia poculata (Ellis and Solander, 1786) |
title_fullStr |
Long-term effects of nutrient and CO2 enrichment on the temperate coral Astrangia poculata (Ellis and Solander, 1786) |
title_full_unstemmed |
Long-term effects of nutrient and CO2 enrichment on the temperate coral Astrangia poculata (Ellis and Solander, 1786) |
title_sort |
long-term effects of nutrient and co2 enrichment on the temperate coral astrangia poculata (ellis and solander, 1786) |
publishDate |
2010 |
url |
https://hdl.handle.net/1912/3636 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://doi.org/10.1016/j.jembe.2010.02.007 https://hdl.handle.net/1912/3636 |
op_doi |
https://doi.org/10.1016/j.jembe.2010.02.007 |
container_title |
Journal of Experimental Marine Biology and Ecology |
container_volume |
386 |
container_issue |
1-2 |
container_start_page |
27 |
op_container_end_page |
33 |
_version_ |
1766159303526318080 |