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WSP08457
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Last modified
1/26/2010 2:48:17 PM
Creation date
10/12/2006 2:59:42 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8062
Description
Federal Water Rights
State
CO
Basin
Statewide
Date
9/1/1983
Author
CDOW
Title
Observations of the Ecology of Colorado Squawfish - Ptychocheilus Lucius - in the Yampa River Colorado - 1982
Water Supply Pro - Doc Type
Report/Study
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<br />2682 <br /> <br />areas in che middle and lower Green River, downscream from Jensen, Ucah; <br /> <br />and (3) squawfish chaC establish residency in che Yampa River cend Co <br /> <br />remain wichin cheir home range chroughouc che year excepC Co spawn, <br /> <br />Twelve larvae were capcured below river km 18, indicacing successful <br /> <br />Colorado squawfish reproduccion in the Lower Yampa River. Our collections <br /> <br />and chose of ochers suggesC chac larvae Cend co drifc or move down che <br /> <br />Yampa River and inco and down the Green River, <br /> <br />Habicac use varied seasonally based on flow and habitat availability, <br /> <br />During high flows, squawfish tend Co move out of che main river into <br /> <br />low-velociCy eddies and backwacers, Ac low flow they cend to move back <br /> <br />into che main river, using pools and runs. Flooded backwater habiCats <br /> <br />used by Colorado squawfish during runoff may play an importanc role in <br /> <br />precondiCioning fish for spawning by providing warmer waCer and feeding <br /> <br />or resting areaS. <br /> <br />water cemperacure is a primary factor influencing spawning cime, <br /> <br />Migracion occurred as fish Cemperatures approached 160C, Fish were in <br /> <br />the spawning area as cemperatures approached 190C and spawning behavior <br /> <br />was observed afcer fish temperatures exceeded 190C, Alcerations of <br /> <br />Yampa River flow and temperature regimes could affecc the reproductive <br /> <br />success of Colorado squawfish spawning within the boundaries of Dinosaur <br /> <br />Nacional Monument, <br /> <br />Note ITeM t?<z("aMe.. <br />Moctee s.,0~ ~ <br />.:5hc:1.V v'G?r:::1 ()Oo~ <br />Co; r€ /a--hOI? ~ <br />c:l.uc::-har'it e l' I~ (Le. - <br />,cvf2u f-€ . <br />
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