Increasingly, there are severe environmental controls in the mining industry. Because of lack of technological advances, waste management practices are severely limited. Most of the wastes in the milling industrial effluents are known to contain cyanides and it is recognized that after extraction and recovery of precious metals, substantial amounts of cyanide are delivered to tailings ponds. Th...

Small waters, like ponds, are the most abundant freshwater environments, and increasingly recognized for their function in ecosystem service delivery. In agricultural watershed, artificial ponds play an essential role reducing nitrogen pollution. However, until now remain least investigated part of water environments. The importance microbial activities has seldom been discussed, which makes pa...

Ponds have a range of ecological, social and aesthetic values. However, little work has been done to appraise the values assigned to ponds located in an urban setting. During 2004, 10 ponds were studied in urban areas of Merseyside. Standard ecological techniques were applied to assess diversity of invertebrates, plants and amphibians. A landscape character assessment technique was used to desc...

During the 2003 rainy season, the clinical and serologic incidence of Rift Valley fever was assessed in small ruminant herds living around temporary ponds located in the semi-arid region of the Ferlo, Senegal. No outbreak was detected by the surveillance system. Serologic incidence was estimated at 2.9% (95% confidence interval 1.0-8.7) and occurred in 5 of 7 ponds with large variations in the ...

A hydrobiological study conducted in nine different ponds of a rural area of Barak Valley, Assam, showed that the concentrations of chemical parameters like dissolved oxygen, free carbon dioxide, pH, conductivity alkalinity nitrate, phosphate, calcium, magnesium, copper and zinc are within the permissible levels of drinking water quality standard of WHO and ISI. However iron content was higher ...

Can variation in egg size explain the local variation in tadpole growth and development of the common frog Rana temporaria or are other mechanisms, e.g. microevolution, involved? To study this, tadpoles were raised in outdoor tanks. Each tank housed tadpoles from one clutch. Eggs were collected during 2 years from six different ponds and their sizes were measured. Large eggs gave rise to tadpol...

BACKGROUND Fish-borne zoonotic trematodes (FZT) are a food safety and health concern in Vietnam. Humans and other final hosts acquire these parasites from eating raw or under-cooked fish with FZT metacercariae. Fish raised in ponds are exposed to cercariae shed by snail hosts that are common in fish farm ponds. Previous risk assessment on FZT transmission in the Red River Delta of Vietnam ident...

Acknowledgements This project was jointly funded by South Carolina Department of Health and Environmental Control – Office of Ocean and Coastal Resource Management and the South Carolina Sea Grant Consortium. The toxicology portion of this project was funded by The Citadel Foundation. We would like to acknowledge the following individuals for their valuable assistance in this project. Sadie Dre...