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181
<br />Holden, P. B., sad C. B. Stalaaker. 1975.
<br />Distribution and abundance of mainstream
<br />fishes of the middle and upper Colorado
<br />River basins, 1967-1973. Trans. Am.-Fish.
<br />Soc. 104:217-231.
<br />Fishes were collected on the Yampa, Green,
<br />lower Gunnison and Colorado rivers. Of the 29
<br />species collected, 19 had been introduced.
<br />The authors state that the decline of native
<br />species is probably due to an alteration of
<br />the habitat by high dams and the introduction
<br />of exotic fish species.
<br />ABUNDANCE, ALTERATION, COLORADO RIVER DRAINAGE,
<br />COMPETITION, DISTRIBUTION, ENDANGERED, HABITAT,
<br />HYBRIDIZATION., REPRODUCTION, STREAM FLOW
<br />182
<br />Holden, P. B., and C. B. Stalnaker. 1975.
<br />Distribution of fishes in the Dolores and
<br />Yampa River systems of the upper Colorado
<br />basin. Southwest. Nat. 19:403-412.
<br />The abundance of fish in the Dolores and Yampa
<br />Rivers in relation to turbidity and water
<br />temperature is discussed. The Yampa River is
<br />determined to be an important- refuge and
<br />spawning site for rare and endangered fish,
<br />whereas the Dolores may have a negative
<br />influence on their survival.
<br />ABUNDANCE, COLORADO RIVER DRAINAGE, ENDANGERED,
<br />HABITAT,, MIGRATION, MOVEMENT,~POLLUTION,
<br />REPRODUCTION, STREAM FLOW, WATER QUALITY--
<br />Physical
<br />.183
<br />Holden, P. B., and L. W. Crist. 1978.
<br />Documentation of changes in the macro-
<br />invertebrate and fish populations in the
<br />Greece River due to inlet modification of
<br />Flaming Gorge Dam. Prepared for U.S. Fish
<br />and Wildl. Serv., Office of Biol. Serv.,
<br />WELUT, PR-16-2, Annu. Rep. 107pp.
<br />In 1978 the p:nstock inlets of Flaming Gorge
<br />Dam were modir'ied to warm the tailwaters to
<br />improve the trout fishery and enhance repro-
<br />duction of rare fish in Dinosaur National
<br />Monument. This study documents existing
<br />species composition and relative abundance of
<br />benthic macroinvertebrates and fish in the
<br />Green and Yampa Rivers. It compares composi-
<br />tion and relative densities of invertebrates
<br />before and after modifications and assesses
<br />changes in the distribution and reproduction
<br />of Green River fishes as a result of altered
<br />temperatures.
<br />ABUNDANCE, AGE/GROWTH, ALTERATION, COLORADO
<br />RIVER DRAINAGE, DISTRIBUTION ENDANGERED,
<br />FISHERY-Sport, HABITAT, HISTORY, INVENTORY,
<br />INVERTEBR4~TES--~Benthos, MOVEMENT, REPRODUCTION,
<br />STREAM FLOW, WATER QUALITY--Physical
<br />184
<br />Holden, P. B., and D. A. Selby. 1979. An
<br />aquatic biology survey of the White River
<br />(Colorado) to assess potential impact of a
<br />proposed water withdrawal system. PR-2-1.
<br />Burns and McDonnell, Kansas City, Mo.
<br />This report provides part of the biological
<br />baseline information needed for, permits and
<br />completion of an environmental- impact state-
<br />ment for a proposed coal mine near Rangely,
<br />Colorado. Potential impacts of water with-
<br />drawal and pollution are discussed.
<br />ABUNDANCE, ALTERATION, COLORADO RIVER DRAINAGE,
<br />HABITAT, INVERTEBRATES--Benthos, MOVEMENT,
<br />POLLUTION, REPRODUCTION, STREAM FLOW, TOXICANTS
<br />185
<br />Hoover, R. L., and D. L. Langlois. 1977. A
<br />partial review of literature on the status,
<br />natural history and life history of endan-
<br />gered and threatened fishes of the Yampa sad
<br />Green River drainages. Colo. Div. Wildl.,
<br />Denver. 17pp. (Uapubl.)
<br />The Colorado squawfish, bonytail, humpback
<br />chub, and razorback sucker, all endemic to the
<br />Colorado .River basin, are listed by the State
<br />or Federal government as endangered or threat-
<br />ened. These fishes have been declining due to
<br />alterations of the Colorado River system.
<br />This paper reviews literature on the status
<br />and natural life histories of these fishes.
<br />ABUNDANCE, AGE/GROWTH, COLORADO RIVER DRAINAGE,
<br />CULTURE, DESCRIPTION, DISTRIBUTION, ENDANGERED,
<br />FOOD, HABITAT, HYBRIDIZATION, IM/ERTEBRATES--
<br />Benthos, Plankton, MIGRATION, NATURAL HISTORY,
<br />POLLUTION, REPRODUCTION, WATE~2 QUALITY- --
<br />Chemical, Physical
<br />186
<br />Horak, D. 1961. Vertical distribution 'of
<br />fishes in Horaetooth Reservoir, Colorado.
<br />M.S. Thesis. Colo. State Univ., Ft.
<br />Collins. 123pp.
<br />A study of the physical, chemical, and biologi-
<br />cal characteristics of Horsetboth Reservoir to
<br />determine the vertical distribution of fish
<br />species in a reservoir environment, to aid
<br />management to enhance the fishery potential of
<br />Horsetooth, and to analyze influential environ-
<br />mental factors (e.g., water temperature and
<br />fluctuation, pH, and dissolved 02).
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