Evaluation of a hydrograph-shifting method for estimating suspended-sediment loads in Illinois streams /

Bibliography: p. 6.

Distribution of phytoplankton in Illinois lakes /

Bibliography: p. 10.

Sensitivity of sturgeons to environmental hypoxia: a review of physiological and ecological evidence

In this essay, three lines of evidence are developed that sturgeons in the Chesapeake Bay and elsewhere are unusually sensitive to hypoxic conditions: 1. In comparison to other fishes,sturgeons have a limited behavioral and physiological capacity to respond to hypoxia. Basal metabolism, growth, feeding rate, and survival are sensitive to changes in oxygen level, which may indicate a relatively poor ability of sturgeons to oxyregulate. 2. During summertime, temperatures >20°C amplify the effect of hypoxia on sturgeons and other fishes due to a temperature oxygen "squeeze" (Coutant 1987). In bottom waters, this interaction results in substantial reduction of habitat; in dry years, sturgeon nursery habitats in the Chesapeake Bay may be particularly reduced or even eliminated. 3. While evidence for population level effects due to hypoxia is circumstantial, there are corresponding trends between the absence of Atlantic sturgeon reproduction in estuaries like the Chesapeake Bay where summertime hypoxia predominates on a system-wide scale. Also, the recent and dramatic recovery of shortnose sturgeon in the Hudson River (4-bid increase in abundance from 1980 to1995) may have been stimulated by improvement of a large portion of the nursery habitat that was restored from hypoxia to normoxia during the period 1973-1978.

Improving environmental quality through the use of local ordinances and regulations /

Cover tite: The use of existing and modified land use instruments to achieve environmental quality.

Lake restoration, protection, and management : proceedings of the second annual conference, North American Lake Management Society, October 26-29, 1982, Vancouver, British Columbia.

"Office of Water Regulations and Standards"--Cover.

Environmental effects of increased coal utilization : ecological effects of gaseous emissions from coal combustion /

Mode of access: Internet.

Indoor air : assessment : methods of analysis for environmental carcinogens /

"EPA/600/8-90/041."

The cost digest : cost summaries of selected environmental control technologies /

Mode of access: Internet.

Symposium proceedings : Environmental Aspects of Fuel Conversion Technology, II, December 1975, Hollywood, Florida /

Mode of access: Internet.

An economic analysis of the environmental impact of highway deicing /

Mode of access: Internet.

Environmental requirements and pollution tolerance of Plecoptera /

Issued Oct. 1978.

Environmental requirements and pollution tolerance of ephemeroptera /

Oct. 1978.

Overview of the environmental control measures and problems in the food processing industries /

Mode of access: Internet.

Acid-fast bacteria and yeasts as indicators of disinfection efficiency /

Mode of access: Internet.

Protection of the ozone layer.

Mode of access: Internet.