Baseline shifts in coral skeletal oxygen isotopic composition: a signature of symbiont shuffling?
Decades-long records of the stable isotopic composition of coral skeletal cores were analyzed from four sites on the Mesoamerican Reef. Two of the sites exhibited baseline shifts in oxygen isotopic composition after known coral bleaching events. Changes in pH at the calcification site caused by a ch...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Springer-Verlag
2016
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| Online Access: | http://hdl.handle.net/1721.1/104431 |
| _version_ | 1826197878830268416 |
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| author | McField, M. Carilli, J. E. Charles, C. D. Norris, R. D. Garren, Melissa S. |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering McField, M. Carilli, J. E. Charles, C. D. Norris, R. D. Garren, Melissa S. |
| author_sort | McField, M. |
| collection | MIT |
| description | Decades-long records of the stable isotopic composition of coral skeletal cores were analyzed from four sites on the Mesoamerican Reef. Two of the sites exhibited baseline shifts in oxygen isotopic composition after known coral bleaching events. Changes in pH at the calcification site caused by a change in the associated symbiont community are invoked to explain the observed shift in the isotopic composition. To test the hypothesis that changes in symbiont clade could affect skeletal chemistry, additional coral samples were collected from Belize for paired Symbiodinium identification and skeletal stable isotopic analysis. We found some evidence that skeletal stable isotopic composition may be affected by symbiont clade and suggest this is an important topic for future investigation. If different Symbiodinium clades leave consistent signatures in skeletal geochemical composition, the signature will provide a method to quantify past symbiont shuffling events, important for understanding how corals are likely to respond to climate change. |
| first_indexed | 2024-09-23T10:54:53Z |
| format | Article |
| id | mit-1721.1/104431 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:54:53Z |
| publishDate | 2016 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/1044312022-09-30T23:54:50Z Baseline shifts in coral skeletal oxygen isotopic composition: a signature of symbiont shuffling? McField, M. Carilli, J. E. Charles, C. D. Norris, R. D. Garren, Melissa S. Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Garren, Melissa S. Decades-long records of the stable isotopic composition of coral skeletal cores were analyzed from four sites on the Mesoamerican Reef. Two of the sites exhibited baseline shifts in oxygen isotopic composition after known coral bleaching events. Changes in pH at the calcification site caused by a change in the associated symbiont community are invoked to explain the observed shift in the isotopic composition. To test the hypothesis that changes in symbiont clade could affect skeletal chemistry, additional coral samples were collected from Belize for paired Symbiodinium identification and skeletal stable isotopic analysis. We found some evidence that skeletal stable isotopic composition may be affected by symbiont clade and suggest this is an important topic for future investigation. If different Symbiodinium clades leave consistent signatures in skeletal geochemical composition, the signature will provide a method to quantify past symbiont shuffling events, important for understanding how corals are likely to respond to climate change. 2016-09-29T16:54:05Z 2016-09-29T16:54:05Z 2013-01 2015-02 2016-08-18T15:24:53Z Article http://purl.org/eprint/type/JournalArticle 0722-4028 1432-0975 http://hdl.handle.net/1721.1/104431 Carilli, J. E. et al. “Baseline Shifts in Coral Skeletal Oxygen Isotopic Composition: A Signature of Symbiont Shuffling?” Coral Reefs 32.2 (2013): 559–571. en http://dx.doi.org/10.1007/s00338-012-1004-y Coral Reefs Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Springer-Verlag Berlin Heidelberg application/pdf Springer-Verlag Springer-Verlag |
| spellingShingle | McField, M. Carilli, J. E. Charles, C. D. Norris, R. D. Garren, Melissa S. Baseline shifts in coral skeletal oxygen isotopic composition: a signature of symbiont shuffling? |
| title | Baseline shifts in coral skeletal oxygen isotopic composition: a signature of symbiont shuffling? |
| title_full | Baseline shifts in coral skeletal oxygen isotopic composition: a signature of symbiont shuffling? |
| title_fullStr | Baseline shifts in coral skeletal oxygen isotopic composition: a signature of symbiont shuffling? |
| title_full_unstemmed | Baseline shifts in coral skeletal oxygen isotopic composition: a signature of symbiont shuffling? |
| title_short | Baseline shifts in coral skeletal oxygen isotopic composition: a signature of symbiont shuffling? |
| title_sort | baseline shifts in coral skeletal oxygen isotopic composition a signature of symbiont shuffling |
| url | http://hdl.handle.net/1721.1/104431 |
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