Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-3826
Title: Atmospheric dimethylsulphide production from corals in the Great Barrier Reef and links to solar radiation, climate and coral bleaching
Authors : Fischer, Esther
Jones, Graham
Published in : Biogeochemistry
Proceedings: Special Issue of the 5th International Symposium on Biological and Environmental Chemistry of DMS(P) and Related Compounds, Goa, India, 19-22 October 2010
Volume(Issue) : 110
Issue : 1–3
Pages : 31
Pages to: 46
Conference details: 5th International Symposium on Biological and Environmental Chemistry of DMS(P) and Related Compounds, Goa, India, 19-22 October 2010
Publisher / Ed. Institution : Springer
Issue Date: 2012
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Aerosol; Coral bleaching; Dimethylsulphide
Subject (DDC) : 577: Ecology
Abstract: Coral zooxanthellae contain high concentrations of dimethylsulphoniopropionate (DMSP), the precursor of dimethylsulphide (DMS), an aerosol substance that could affect cloud cover, solar radiation and ocean temperatures. Acropora intermedia a dominant staghorn coral in the Indo-Pacific region, contain some of the highest concentrations of DMSP reported in the literature but no studies have shown that corals produce atmospheric DMS in situ and thus could potentially participate in sea surface temperature (SST) regulation over reefs; or how production varies during coral bleaching. We show that A. intermedia from the Great Barrier Reef (GBR) produces significant amounts of atmospheric DMS, in chamber experiments, indicating that coral reefs in this region could contribute to an ‘‘ocean thermostat’’ similar to that described for the western Pacific warm pool, where significantly fewer coral reefs have bleached during the last 25 years because of a cloud-SST feedback. However, when Acropora intermedia was stressed with higher light levels and seawater temperatures DMSP production, an indicator of zooxanthellae expulsion, increased markedly in the chamber, whilst atmospheric DMS emissions almost completely shut down. These results suggest that during increased light levels and seawater temperatures in the GBR coral shut-down atmospheric DMS aerosol production, potentially increasing solar radiation levels over reefs and exacerbating coral bleaching.
Further description : Erworben im Rahmen der Schweizer Nationallizenzen (http://www.nationallizenzen.ch)
Departement: Life Sciences und Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Publication type: Conference Paper
DOI : 10.1007/s10533-012-9719-y
10.21256/zhaw-3826
ISSN: 1573-515X
0168-2563
URI: https://digitalcollection.zhaw.ch/handle/11475/7566
Appears in Collections:Publikationen Life Sciences und Facility Management

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