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Full-Text Articles in Physical Sciences and Mathematics

Cavefish Population Status And Environmental Quality In Cave Springs Cave, Arkansas - Final Report Submitted To Arkansas Natural Heritage Commission, G. O. Graening, Arthur V. Brown Aug 1999

Cavefish Population Status And Environmental Quality In Cave Springs Cave, Arkansas - Final Report Submitted To Arkansas Natural Heritage Commission, G. O. Graening, Arthur V. Brown

Technical Reports

This report summarizes the continuing effort to monitor environmental quality in the Cave Springs Cave Natural Area and to implement the Ozark Cavefish Recovery Plan. Last year’s report (Brown et al., 1998) identified certain environmental stressors, including a trend over 15 years of increasing nutrient pollution, a low cavefish population count of only 106, and the presence of heavy metals in the cave water and one semi-volatile organic compound (the phthalate DEHP at 500 ppb) in resident crayfish tissue. This year’s monitoring effort demonstrates that fecal coliforms continue to exceed Arkansas State Water Quality Standards (Regulation 2), sometimes by a …


Basic Science And Risk Communication: A Dialogue-Based Study, Char J. Word, Anna K. Harding, Gordon R. Bilyard, James R. Weber Jun 1999

Basic Science And Risk Communication: A Dialogue-Based Study, Char J. Word, Anna K. Harding, Gordon R. Bilyard, James R. Weber

RISK: Health, Safety & Environment (1990-2002)

The authors use ethnographic analysis of a focus group discussion between scientists and laypersons to study information exchange in risk communication.


Agriculture And Nature Conservation In The Moravian Karst (Czech Republic), Ivan Balák, Jozef Janèo, Leos Stefka, Pavel Bosák Jan 1999

Agriculture And Nature Conservation In The Moravian Karst (Czech Republic), Ivan Balák, Jozef Janèo, Leos Stefka, Pavel Bosák

International Journal of Speleology

Moravian karst is a narrow strip of limestone with long history of settlement, agricultural use and man impact to karst. It is naturally divided into smaller units - karst plateaus - separated by deep valleys (glens). Each plateau has different proportion of land use, i.e. the percentage of agricultural land, forests, etc. The agricultural land constitutes now up to 70% in the north and max. 30% in the centre and south of the total area of plateaus. Intensive agricultural use of the arable land since 60ties of this Century caused great impact to quality of soils and groundwater by overdoses …


The Rehabilitation Of The Tampa Bay Estuary, Florida, Usa, As An Example Of Successful Integrated Coastal Management, R. R. Lewis, P. A. Clark, W. K. Fehring, H. S. Greening, R. O. Johansson, R. T. Paul Jan 1999

The Rehabilitation Of The Tampa Bay Estuary, Florida, Usa, As An Example Of Successful Integrated Coastal Management, R. R. Lewis, P. A. Clark, W. K. Fehring, H. S. Greening, R. O. Johansson, R. T. Paul

Reports

The first suggestion that controls on eutrophication and dredging impacts were needed came in 1969. The federal Water Pollution Control Administration recommended a water quality management plan and waste abatement program to control odour and other pollution symptoms in Hillsborough Bay, and a master plan for dredging and filling the bay.


Impacts Of Agricultural Transformation On The Principal Karstic Regions Of France, Jean Nicod, Jean-Noël Salomon Jan 1999

Impacts Of Agricultural Transformation On The Principal Karstic Regions Of France, Jean Nicod, Jean-Noël Salomon

International Journal of Speleology

The recent extension of intensive agriculture on the karst plateaus has caused different types of impact: soil management, generalised and/or localised pollution. Yet paradoxically rural depopulation can also have negative impacts, which largely depend on the characteristics and the hydrological function of the different karst environments. They are often negative, particularly as far as the water quality is concerned, which is why protection measures are undertaken, either in a defined area for a catchment, or in the framework of regional parks. But this is not always the case, so it is appropriate to analyse the problem of karst pollution as …