Methods for Evaluating Stream, Riparian, and Biotic ConditionsU.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1982 - Aquatic ecology - 70 pages |
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Page 2
... stream for fish perpetuation ? ( 2 ) How many cattle can be grazed in the riparian zone without excessive damage to the stream ... width of a channel and extends along that stream for 200 ft ( 60.96 m ) providing a total area of 10,000 ft2 ( ...
... stream for fish perpetuation ? ( 2 ) How many cattle can be grazed in the riparian zone without excessive damage to the stream ... width of a channel and extends along that stream for 200 ft ( 60.96 m ) providing a total area of 10,000 ft2 ( ...
Page 6
... stream width , and assists in delineating the boundaries of plots for electrofishing . If the purpose is to determine or to monitor an environmental . condition of the stream at a single point , then one transect is sufficient . For ...
... stream width , and assists in delineating the boundaries of plots for electrofishing . If the purpose is to determine or to monitor an environmental . condition of the stream at a single point , then one transect is sufficient . For ...
Page 7
... Stream width is the horizontal distance along the transect line from shore to shore along the existing water surface . Width is that length of the transect line intercept over the stream channel and bank that is covered by water . Stream ...
... Stream width is the horizontal distance along the transect line from shore to shore along the existing water surface . Width is that length of the transect line intercept over the stream channel and bank that is covered by water . Stream ...
Page 8
... channel or cause a sharp drop in the water surface profile . The measurements to determine the amount of pool , glide , run , and riffle are made directly along the transect line . In this report , pool width has been measured to the ...
... channel or cause a sharp drop in the water surface profile . The measurements to determine the amount of pool , glide , run , and riffle are made directly along the transect line . In this report , pool width has been measured to the ...
Page 9
... streams between 20 - and 60 ft in width Description 1A If the pool maximum diameter is within 10 percent of the average stream width of the study site ... 1B If the maximum pool diameter exceeds the average stream width of the study ...
... streams between 20 - and 60 ft in width Description 1A If the pool maximum diameter is within 10 percent of the average stream width of the study site ... 1B If the maximum pool diameter exceeds the average stream width of the study ...
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Common terms and phrases
95 percent confidence aquatic habitat bank benthic biological biomass biotic boulder calculated channel cross section chinook salmon Chironomidae clinometer coho salmon collected confidence intervals core cover cyanide debris determine diameter Diptera electrofishing Elk Creek environmental Ephemeroptera evaluation fish population fish standing crop fishery flood plain flow Forest Service Fork Salmon River freeze-core Frenchman Creek Gance Creek gravel Horton Creek Idaho inches interval Precision Accuracy Johnson Creek macroinvertebrates material measurement Megahan method number of fish observer particle percent confidence interval percent fines Platts population estimate precision and accuracy primacord procedure removal riffle rotenone rubble salmonid sampler sediment selected Sodium cyanide South Fork Salmon spawning areas Station stream bottom stream width streambank streamflow streamside studies substrate Table tape taxa technique tion total number transect line Trichoptera trout U.S. Department U.S. Geological Survey undercut values variable vegetation velocity water column water depth water surface year-to-year precision