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Last modified
8/11/2009 11:32:57 AM
Creation date
8/10/2009 4:29:28 PM
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UCREFRP
UCREFRP Catalog Number
7996
Author
Wydoski, R. S. and E. D. Wick.
Title
Ecological Value of Flooded Bottomland Habitats to Endangered Fishes in the Upper Colorado River Basin.
USFW Year
1996.
USFW - Doc Type
\
Copyright Material
NO
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<br />.. <br /> <br />Table 3. The match or mlsmatch of physical. biological. or chemical <br />factors in the enhancelllellt or flooded bottomland habitats <br />as nursery areas for endangered Colorado River fishes. <br /> <br />PhYSical Considerations <br />Water Supply <br />Surface Water <br />Groundwater <br />Frequency of Inundation <br />River Elevation at Flooding <br />Water Depth <br />Water Duration <br />Control of Water Levels <br />Control of Water Exchange <br />Manipulation of Water Temp. <br />Possible Sediment Control <br /> <br />Bioloqical Considerations <br />Ecosystem Approach <br />Status and Trends of Stocks <br />Genetic Management Possible <br />Imprinting Larvae Possible <br />Batch Marks for Identification <br />of Captive-Reared Fish <br />Size of Captive-Reared Fish <br />at Release (Total Length) <br />Timing of Release <br />Diel <br />Seasonal <br />" <br /> <br />Match <br /> <br />x <br /> <br />1 inS Yrs. <br />1 inS Yrs. <br />0.5 Meter or > <br />Controlled <br />Yes <br />Yes <br />Yes <br />Yes <br /> <br />Yes <br />Known <br />Yes <br />Yes <br /> <br />Essential <br /> <br />100 mm or > <br /> <br />Night <br />Low Flows <br />Temp. > 50 F <br />Summer/Fall <br />Access and Exit for Fish Present <br />Vegetative Cover Present <br />Zooplankton density 50 organisms/l <br />Control of Predators/Competitor <br />Nonnative Fish <br />Predacious Invertebrates <br />Wading Birds (Water Depth) <br />Diving Birds (Veg. Cover) <br />Raccoons (Water Depth) <br />River Otters (Veg. Cover) <br /> <br />Chemical Considerations <br />Acceptable Water Quality <br />Dissolved Oxygen <br />Supersaturation of Nitrogen <br />pH <br />Selenium (in Water) <br />Heavy Metals <br />Pesticides or Herbicides <br /> <br />Necessary <br />Possible <br />0.5 Meter or > <br />Present <br />0.5 Meter or > <br />Present <br /> <br />Low Salt <br />> 5 ppm <br />100% or < <br />7.0 or > <br />2 ppb or < <br />Absent or Low <br />Absent or Low <br /> <br />Mismatch <br /> <br />x <br />< 1 in 5 Yrs. <br />5 Yrs. or > <br />< 0.5 Meter <br />Uncontrolled <br />No <br />No <br />No <br />No <br /> <br />No <br />Unknown <br />No <br />No <br /> <br />Not Possible <br /> <br />< 100 mm <br /> <br />Daylight <br />High Flows <br />Temp. < 50 F <br />Winter/Spring <br />Absent <br />Absent <br />< 50/1 <br /> <br />None <br />Not Possible <br />< 0.5 Meter <br />Absent <br />< 0.5 Meter <br />Absent <br /> <br />Highly Saline <br />< 5 ppm <br />> 102% <br />< 7.0 <br />> 2 ppb <br />Present <br />Present <br /> <br />33 <br />
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