Laserfiche WebLink
<br />~ <br /> <br />70 <br /> <br />P. B. HOLDEN <br /> <br />riverine fishes do not live in reservoirs. The eradication programs <br />did little more than give exotic species a head start on game fishes. <br />Where native riverine fish were not eradicated, they probably acted <br />as a buffer against the buildup of unwanted species, allowing <br />planted game fish populations a,chance to become established. The <br />downstream effects of eradication programs may create similar <br />conditions in tailwaters, essentially leaving the habitat wide open <br />for opportunistic exotic species. <br /> <br />CONCLUSIONS <br /> <br />As a concluding remark, it must be said that regulation of <br />streams has had an enormous detrimental impact on riverine fishes, <br />especially those species that require flowing water. The greatest <br />impact is usually in those species that are fairly specialized, <br />especially if they have a narrow temperature tolerance. The need <br />in future research primarily revolves around predicting the effects <br />of stream regulation on target species. This involves two types of <br />studies. First, the habitat requirements of target species must be <br />determined in detail. Second" methods must be devised to predict <br />physical, chemical, and biological changes in rivers due to damming. <br />These kinds of data are necessary to predict impacts of regulation <br />and will be valuable in attempts to correct existing problems. <br /> <br />LITERATURE CITED <br /> <br />Allen, K. R., 1969, Distinctive aspects of the ecology of stream <br />fishes: A review, J. Fish. Res. Board Can., 26:1429-1438. <br />Balon, E. K., 1978, Kariba: The dubious benefits of large dams, <br />Ambio, 7(2):40-48. <br />Banks, R. L., Mullan, J. W., Wiley, R. W., and Dufek, D. J., 1974, <br />"The Fontenelle Green River Trout fisheries--Considerations in <br />its Enhancement and Perpetuation, Including Test Flow Studies <br />of 1973," Fish Wildl. Serv., Salt Lake City, Utah. <br />Blake, R. F., 1977, The effect of the impoundment of Lake Kainji, <br />Nigeria, on the indigenous species of mormyrid fishes. <br />Freshwater Biol., 7(1):37-42. <br />Bovee, K. D., 1978, "Probability-of-Use Criteria for the Family <br />Salmonidae," Fish Wildl. Serv., Coop. Inst. Flow Servo Group, <br />Info. Pap. 4. <br />Bovee, K. D., and Cochnauer, T., 1977, "Development and Evaluation <br />of Weighted Criteria, Probability-of-Use Curves for Instream <br />Flow Assessments: Fisheries," Fish Wildl. Serv., Coop. Inst. <br />Flow Servo Group, Info. Pap. 3. <br />Branson, B. A., 1974, The American paddlefish: Signs of distress, <br />Natl. Parks Conserv. Mag., 48(1):21-23. <br />