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dc.contributor.authorRossbach, Susann
dc.contributor.authorSaderne, Vincent
dc.contributor.authorAnton Gamazo, Andrea
dc.contributor.authorDuarte, Carlos M.
dc.date.accessioned2019-08-08T07:07:53Z
dc.date.available2019-08-08T07:07:53Z
dc.date.issued2019-07-09
dc.identifier.citationRossbach, S., Saderne, V., Anton, A., & Duarte, C. M. (2019). Light-dependent calcification in Red Sea giant clam <i>Tridacna maxima</i> Biogeosciences, 16(13), 2635–2650. doi:10.5194/bg-16-2635-2019
dc.identifier.doi10.5194/bg-16-2635-2019
dc.identifier.urihttp://hdl.handle.net/10754/656421
dc.description.abstractTropical giant clams of the subfamily Tridacninae, including the species Tridacna maxima, are unique among bivalves as they live in a symbiotic relationship with unicellular algae and generally function as net photoautotrophs. Light is therefore crucial for these species to thrive. Here we examine the light dependency of calcification rates of T. maxima in the central Red Sea as well as the patterns of its abundance with depth in the field. Red Sea T. maxima show the highest densities at a depth of 3 m with 0:82 ± 0:21 and 0:11±0:03 individuals m-2 (mean ± SE) at sheltered and exposed sites, respectively. Experimental assessment of net calcification (μmol CaCO3 cm-2 h-1) and gross primary production (μmol O2 cm-2 h-1) under seven light levels (1061, 959, 561, 530, 358, 244, and 197 μmol quanta m-2 s-1) showed net calcification rates to be significantly enhanced under light intensities corresponding to a water depth of 4 m (0:65 ± 0:03 μmol CaCO3 cm-2 h-1; mean ± SE), while gross primary production was 2:06±0:24 μmol O2 cm-2 h-1 (mean ± SE). We found a quadratic relationship between net calcification and tissue dry mass (DM in gram), with clams of an intermediate size (about 15 g DM) showing the highest calcification. Our results show that the Red Sea giant clam T. maxima stands out among bivalves as a remarkable calcifier, displaying calcification rates comparable to other tropical photosymbiotic reef organisms such as corals.
dc.description.sponsorshipAcknowledgements: We thank Janna Leigh Randle and Felix Ivo Rossbach for assistance with field sampling and the KAUST Coastal and Marine Resources Core Lab for logistical support.
dc.description.sponsorshipFinancial support: This research was funded by King Abdullah University of Science and Technology (KAUST), through baseline funding to Carlos M. Duarte, and a fellowship of the Visiting Student Research Program to Susann Rossbach.
dc.publisherCopernicus GmbH
dc.relation.urlhttps://www.biogeosciences.net/16/2635/2019/
dc.rightsThis work is distributed under the Creative Commons Attribution 4.0 License.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleLight-dependent calcification in Red Sea giant clam Tridacna maxima
dc.typeArticle
dc.contributor.departmentMarine Science Program
dc.contributor.departmentRed Sea Research Center (RSRC)
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.identifier.journalBiogeosciences
dc.eprint.versionPublisher's Version/PDF
kaust.personRossbach, Susann
kaust.personSaderne, Vincent
kaust.personAnton Gamazo, Andrea
kaust.personDuarte, Carlos M.
dc.relation.issupplementedbyDOI:10.1594/PANGAEA.903560
dc.relation.issupplementedbyDOI:10.1594/pangaea.903560
refterms.dateFOA2019-08-08T07:08:44Z
display.relations<b>Is Supplemented By:</b><br/> <ul><li><i>[Dataset]</i> <br/> Rossbach, S., Saderne, V., Anton, A., &amp; Duarte, C. M. (2019). Abundance, primary production rates and net calcification rates of Tridacna maxima giant clams at two reefs in the Central Red Sea, supplement to: Rossbach, Susann; Saderne, Vincent; Anton, Andrea; Duarte, Carlos Manuel (2019): Light-dependent calcification in Red Sea giant clam Tridacna maxima. Biogeosciences, 16(13), 2635-2650. PANGAEA - Data Publisher for Earth &amp; Environmental Science. https://doi.org/10.1594/PANGAEA.903560. DOI: <a href="https://doi.org/10.1594/PANGAEA.903560" >10.1594/PANGAEA.903560</a> Handle: <a href="http://hdl.handle.net/10754/662378" >10754/662378</a></a></li><li><i>[Dataset]</i> <br/> Rossbach, S., Saderne, V., Anton, A., &amp; Duarte, C. M. (2019). Abundance, primary production rates and net calcification rates of Tridacna maxima giant clams at two reefs in the Central Red Sea, supplement to: Rossbach, Susann; Saderne, Vincent; Anton, Andrea; Duarte, Carlos Manuel (2019): Light-dependent calcification in Red Sea giant clam Tridacna maxima. Biogeosciences, 16(13), 2635-2650. PANGAEA - Data Publisher for Earth &amp; Environmental Science. https://doi.org/10.1594/PANGAEA.903560. DOI: <a href="https://doi.org/10.1594/pangaea.903560" >10.1594/pangaea.903560</a> Handle: <a href="http://hdl.handle.net/10754/662378" >10754/662378</a></a></li></ul>
kaust.acknowledged.supportUnitKAUST Coastal and Marine Resources Core Lab


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This work is distributed under the Creative Commons Attribution 4.0 License.
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