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<br />'()02329 <br /> <br />Task 4: "Identify compatible and incompatible uses of habitat" <br /> <br />In-channel Habitat Manaqement Methods <br /> <br />1. Scouring Flows - High flows of sufficient magnitude and <br />duration, prior to use by species of interest, could be used <br />to remove some annual and perennial vegetation from riverine <br />areas. Scouring flows rework bottom sediments and prevent <br />deposition of seeds. <br /> <br />~. Mecha.....~ .....a' ,.., ea.......: -g "'e"e--' ....pe- -~ ----.:, a'-' - -a.....'L...: ---- <br />- '.I. j. .U..l...... ..a............ J.. .....u. = u v LQ..L '-~ 0:=0 V.L ava...L..L .LJ.Lt:: lU l".;11.LUC.O <br />and hand tools could be used to remove woody vegetation from <br />riverine sandbars and from adjacent streamside areas. <br />Volunteer manual labor is currently being used to clear <br />vegetation from islands. Clearing can be used to enhance <br />some areas to provide roosting or nesting habitat for <br />species of interest. <br /> <br />3. Inundation Flows - Properly timed flows of sufficient volume <br />and duration could be used to drown seedlings or flush seeds <br />of encroaching vegetation. <br /> <br />4. Prescribed Burns - Repeated controlled burns could be used <br />on riverine areas, streamside areas, and sandbars to retard <br />encroachment of woody and herbaceous vegetation. <br /> <br />5. Chemical Control - Properly labeled and properly applied <br />herbicides could be utilized in some areas to retard * <br />encroachment of woody vegetation; no aerial application. <br /> <br />6. Regulated Grazing - Under some circumstances, livestock <br />grazing could be used to retard encroachment of woody and <br />herbaceous vegetation. <br /> <br />7. Sediment Supply and Transport - Adequate supplies of <br />sediments transported by flows of sufficient volume could <br />remove annual and perennial vegetation from riverine areas. <br /> <br />8. Instream Structures - Temporary low-head dams could be <br />constructed to drown in-channel vegetation. Channel blocks <br />and other structures could be constructed to redirect flows <br />to encourage erosion of sandbars and islands. <br /> <br />* <br />Currently, the Environmental Protection Agency is developing <br />pesticide use maps for endangered species on a nationwide basis. <br />The Fish and wildlife Service's Grand Island office has provided <br />comments (4/24/92 memo) on pesticide use maps for Interior Least <br />Tern, Piping Plover, Blowout Penstemon, and Western prairie <br />Fringed Orchid in Nebraska. The herbicide, Rodeo (a glyphosate), <br />is not one of the restricted pesticides listed on the pesticide <br />use maps. Presently, Rodeo is being used by at least one entity <br />managing land on the Platte River to control vegetation on <br />interior least tern/piping plover nesting islands. <br />