Benthic macrofauna in a shallow water carbonate sediment: major bioturbators at the Dry Tortugas |
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Authors: | A F D’Andrea G R Lopez |
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Institution: | (1) Marine Sciences Research Center, SUNY-Stony Brook, Stony Brook, NY 11794-5000, USA, US |
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Abstract: | Functional group analysis was used to determine the major bioturbators in the Dry Tortugas, Florida Keys. The surface community
is dominated by surface deposit feeding polychaetes and burrowing bivalves capable of mixing the top 0–4 cm of the sediment
on time scales of days to weeks. Bioturbation by the Notomastus sp. and Callianassa sp. deep community effectively removes primary sedimentary structures. Their fossilized burrow structures may be geologically
important in this system. Surface microtopography is controlled by stabilizing and destabilizing forces that determine the
potential for surface resuspension and sediment transport in the Dry Tortugas. |
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Keywords: | |
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