7025 - Laserfiche WebLink

Home Browse Search

43 Augmentation -Hatchery augmentation should be investigated, but only as a last resort -Supplemental stocking in certain locations may be necessary for a short period. Careful evaluation of the stocking program should be accomplished concurrently. -In conjunction with flow management, substantial stocking of native fishes may be necessary in the future. -Supplementation with appropriate-sized specimens to overcome predation/competition. -Stocking of larger endangered native fish. -Augment endangered fish populations if necessary. -Transplantation. -Stocking. Refugia -Create refugium populations including maintenance in hatcheries. -Hatchery culture of endangered fishes. -Protection of species gene pools in refugia Angler harvest -Promote catch and release of native fish through information and education programs. Question 17: How do you view the relative effect of impacts of introduced fishes in the spect1Um of other potential impacts to the habitat or life history requirements of endangered fishes (e.g., flow depletion/alteration, habitat/water quality degradation due to water development, land use practices, or other identifiable human-related activity? Thirteen of 26 respondents indicated habitat related impacts, especially flow alterations and depletions due to mainstream dams, diversions, and other land use practices, were of greater importance than introduced species in affecting endangered fishes, especially in the upper basin. Nine respondents placed the impacts due to introduced species at least equal to, or greater than effects from other sources. Seven of the respondents referred to a cumulative or synergistic effect of various impacts upon the native fish fauna, with the inference that the relative effect of a specific type of impact like introduced fish is difficult to estimate alone from the array of potential adverse impacts. A diversity of philosophy and opinion was expressed in some detail in the answers here, and provided useful perspectives