Using coral-based records to assess the effects of terrestrially-derived sediments on reef development at the community and skeletal microarchitectural level

Perry, C.T., Roche, R.C., Palmer, S.E., Smithers, S.G., and Johnson, K. (2008) Using coral-based records to assess the effects of terrestrially-derived sediments on reef development at the community and skeletal microarchitectural level. In: Geophysical Research Abstracts (10) From: European Geosciences Union General Assembly 2008, 13-18 April 2008, Vienne, Austria.

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Abstract

[Extract] Increased terrestrial sediment and nutrient yields, linked to anthropogenic modification of coastal catchments, are widely regarded as one of the most significant threats to coral reef 'health'. This view stems from the perception that such inputs can increase inner-shelf turbidity and/or sedimentation rates, as well as nutrient concentrations, to levels that are detrimental to coral growth and reef development. In this context a number of studies have utilised various proxy data obtained from coral skeletons (density banding, fluorescent banding and isotopic ratios) to interpret both the frequency and intensity of fluvial inputs to nearshore environments. In addition, a number of studies have examined spatial variations in rates of coral growth and calcification across gradients of fluvial freshwater and sediment input. The often successful application of these skeletal-based proxy records from recent corals raises the intriguing possibility of establishing detailed, long-term (>103 year timescale) records of coral community development, coral growth and skeletal calcification.

Item ID: 29319
Item Type: Conference Item (Abstract / Summary)
ISSN: 1607-7962
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Date Deposited: 16 Sep 2013 00:29
FoR Codes: 04 EARTH SCIENCES > 0406 Physical Geography and Environmental Geoscience > 040601 Geomorphology and Regolith and Landscape Evolution @ 100%
SEO Codes: 96 ENVIRONMENT > 9603 Climate and Climate Change > 960305 Ecosystem Adaptation to Climate Change @ 100%
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