Fish Community Assemblages of Mining-Impacted Freshwaters at Prestea, Ghana
نویسندگان
چکیده
منابع مشابه
Mercury speciation in piscivorous fish from mining-impacted reservoirs.
Guadalupe Reservoir (GUA), California, and Lahontan Reservoir (LAH), Nevada, U.S. are both affected either directly or indirectly by the legacy of gold and silver mining in the Sierra Nevada during the nineteenth century. Analysis of total mercury in fish from these lentic systems consistently indicate elevated concentrations (>1 microg x g(-1) wet weight; hereinafter, all concentrations are re...
متن کاملA New Freshwater Biodiversity Indicator Based on Fish Community Assemblages
Biodiversity has reached a critical state. In this context, stakeholders need indicators that both provide a synthetic view of the state of biodiversity and can be used as communication tools. Using river fishes as model, we developed community indicators that aim at integrating various components of biodiversity including interactions between species and ultimately the processes influencing ec...
متن کاملFish extinctions alter nutrient recycling in tropical freshwaters.
There is increasing evidence that species extinctions jeopardize the functioning of ecosystems. Overfishing and other human influences are reducing the diversity and abundance of fish worldwide, but the ecosystem-level consequences of these changes have not been assessed quantitatively. Recycling of nutrients is one important ecosystem process that is directly influenced by fish. Fish species v...
متن کاملMercury in the Surface Soil and Cassava, Manihot esculenta (Flesh, Leaves and Peel) Near Goldmines at Bogoso and Prestea, Ghana
Mercury amalgamation is used indiscriminately in the recovery of gold by small-scale native gem winners in Ghana. Mercury is released into the environment in the form of wastewater, tailing and vapor from the roasting of amalgam to separate gold. The study looked at the levels of total mercury concentration in surface soil and cassava crop from farms located within the vicinities of Bogoso and ...
متن کاملExposure of Small-Scale Gold Miners in Prestea to Mercury, Ghana, 2012
INTRODUCTION Small-scale gold miners in Ghana have been using mercury to amalgamate gold for many years. Mercury is toxic even at low concentration. We assessed occupational exposure of small-scale gold miners to mercury in Prestea, a gold mining town in Ghana. METHODS We conducted a cross-sectional study in which we collected morning urine samples from 343 small-scale gold miners and tested ...
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ژورنال
عنوان ژورنال: Asian Journal of Fisheries and Aquatic Research
سال: 2018
ISSN: 2582-3760
DOI: 10.9734/ajfar/2018/v1i1249