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<br />FWS/OBS-76/20.8. THE CLEAN AIR ACT: ITS RELATION TO FISH AND WILDLIFE <br />RESOURCES. M. Avery and R. K. Schreiber. 1979. 14 pp. <br /> <br />Federal air quality legislation is reviewed, with special emphasis on the <br />1977 Amendments to the Clean Air Act, particularly those aspects concern- <br />ing fish and wildlife resources. Participation by fish and wildlife <br />biologists in the implementation of the 1977 Amendments is discussed, and <br />future research needs are identified. <br /> <br />FWS/OBS-76/20.9. COOLING WATER INTAKE SCREENING DEVICES USED TO REDUCE <br />ENTRAINMENT AND IMPINGEMENT. E. S. Fritz. 1980. 21 pp. <br /> <br />Cooling water intake screening devices are identified and described. For <br />each device, the location, limitations or restrictions, evidence for <br />reducing entrainment and impingement, and major unresolved problems are <br />also discussed. <br /> <br />FWS/OBS-76/21. PRELIMINARY REPORT: GRAVEL REMOVAL STUDIES IN SELECTED ARCTIC <br />AND SUBARCTIC STREAMS IN ALASKA. Woodward-Clyde Consultants. 1976. <br />127 pp. <br /> <br />An eva 1 uat i on of the effects of gravel remova 1 in streams. Gui de 1 i nes <br />are included to help resource managers formulate recommendations to <br />minimize environmental impact from operations involving the removal of <br />gravel from streams and floodplains. (See also FWS/OBS-80/08 and 80/09.) <br /> <br />FWS/OBS-76/22. IMPACT OF MOSQUITO CONTROL PRACTICES: A BIBLIOGRAPHY. Gulf <br />South Research Institute. 1977. 97 pp. <br /> <br />An annotated bibliography with sections on insecticide studies and <br />environmental controls. <br /> <br />FWS/OBS-76/23. GREAT lAKES FISH EGG AND lARVAE IDENTIFICATION. John Boreman, <br />ed. 1976. 220 pp. <br /> <br />The proceedi ngs of a workshop held Apri 1 19-21, 1976, in Ann Arbor, <br />Michigan, to (1) assess the state-of-the-art of Great lakes fish egg and <br />larvae identification and (2) develop a strategy for future taxonomic <br />work in the Great lakes region. Included with the proceedings are an <br />annotated bibliography, a fish species list for each of the Great lakes, <br />and a list of family characteristics of the fish larvae. <br /> <br />FWS/OBS-76/24. EFFECTS OF STREAM CHANNELIZATION ON FISH POPULATIONS IN THE <br />BUENA VISTA MARSH, PORTAGE COUNTY, WISCONSIN. Michael R. Headrick. <br />1976. 38 pp. <br /> <br />This study was part of an investigation of channelization impacts on <br />fi shery, aquatic invertebrate, and wil dl ife resources in the central <br />Wisconsin sand plain. Recently dredged ditches were investigated to <br />determine immediate effects; old ditches were investigated to determine <br />how well fish populations had recovered 52-62 years after dredging. <br /> <br />9 <br />