Effects of sediment discharge from Namibian diamond mines on intertidal and subtidal rocky-reef communities and the rock lobster Jasus lalandii

Pulfrich Andrea; Branch George M.

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Effects of sediment discharge from Namibian diamond mines on intertidal and subtidal rocky-reef communities and the rock lobster Jasus lalandii

机译：Effects of sediment discharge from Namibian diamond mines on intertidal and subtidal rocky-reef communities and the rock lobster Jasus lalandii

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摘要

Extensive terrestrial diamond mining occurs on the southern coast of Namibia, and at Elizabeth Bay near Luderitz sediment tailings totalling about 2 million tons.yr(-1), have been discharged onto the beach. We report here on monitoring spanning 2004-2012 to assess (1) the impacts of increased tailings discharges following an expansion of the mine in 2005, and (2) recovery after discharges halted in 2009. Sampling covered three levels of wave exposure, and compared impacted sites with comparable unmined reference sites. Benthic communities were quantified on both intertidal and subtidal reefs, and kelp densities and rock-lobster abundances, lengths and sex ratios on subtidal reefs.

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《Estuarine coastal and shelf science》 |2014年第5期|179-191|共13页
作者
Pulfrich Andrea; Branch George M.;
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作者单位

Univ Cape Town, Dept Zool, Marine Res Inst, ZA-7701 Rondebosch, South Africa;

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原文格式 PDF
正文语种英语
中图分类海洋学;
关键词
diamond mining; disturbance; reefs; rocky-shore communities; sediment disposal; shoreline accretion;

Effects of sediment discharge from Namibian diamond mines on intertidal and subtidal rocky-reef communities and the rock lobster Jasus lalandii

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