Quantifying sediment dynamics on an inshore coral reef: putting algal turfs in perspective

Latrille, François X., Tebbett, Sterling B., and Bellwood, David R. (2019) Quantifying sediment dynamics on an inshore coral reef: putting algal turfs in perspective. Marine Pollution Bulletin, 141. pp. 404-415.

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Abstract

Increased sediment loads within algal turfs, can be highly detrimental to coral reef systems. However, significant knowledge gaps remain in relation to sediment dynamics, especially linking suspended sediments, sedimentation and turf-bound sediments. To examine these links, a series of different methods for quantifying suspended sediments, sedimentation and the accumulation of turf sediments were compared, simultaneously, on an inner-shelf reef. We revealed that the amount and composition of sediment quantified using different methods varied markedly, with commonly employed measures of sedimentation failing to accurately reflect patterns of sediment accumulation in turfs. Our results highlighted the propensity for turfs to trap and retain sediments, with turfs accumulating approximately 2.6 times more sediment than traps, and 6 times more sediment than SedPods, over a seven-day period. This study highlights the major, but often overlooked, role that algal turfs can play in sediment dynamics on coral reefs.

Item ID: 58422
Item Type: Article (Research - C1)
ISSN: 1879-3363
Keywords: Epilithic algal matrix, Turbidity, Suspended sediments, Sedimentation, Sediment trap, SedPod
Copyright Information: © 2019 Elsevier Ltd. All rights reserved
Funders: Australian Research Council (ARC)
Projects and Grants: ARC grant number CE140100020
Date Deposited: 29 May 2019 07:44
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050204 Environmental Impact Assessment @ 100%
SEO Codes: 96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960507 Ecosystem Assessment and Management of Marine Environments @ 100%
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