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Free Content Macroinfauna communities in an organic-rich mudflat at Shenzhen and Hong Kong, China

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The tidal mudflat bordering Shenzhen and Hong Kong, China, is an internationally important site for waterfowl. Three transects at the flat were sampled for macroinfauna quarterly between January 1996 and October 1999, as part of the environmental impact assessment of the Shenzhen River regulation project. Total organic matter and clay content at the study sites increased gradually over the 4-yr period, mainly due to organic pollution, dredging, and reclamation. A total of 74,223 individuals from 47 species were found. The communities were dominated by polychaete species and the oligochaete, Limnodriloides sp. The species diversity and species richness were low, with no clear pattern among the three transects or for any transect over time. Overall, total densities (mean ± SD 78.5 cm−2 core) at the three transects (A, B, and C) were 201.0 ± 197.9, 61.5 ± 38.9 and 46.8 ± 35.7, respectively. The community at transect A, furthest away from the Shenzhen River, was heavily dominated by Limnodriloides sp. Community structure at the transects B and C, both near the Shenzhen River, were similar and dominated by Limnodriloides sp., the polychaetes Capitella capitata, and the snail Sermyla riqueti. Community structure and densities of the macroinfauna within each transect in the organic- enriched mudflat were relatively stable over the 4-yr study period.

Document Type: Research Article

Publication date: 2001-11-01

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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