Differences in fish habitat variables between two studied watersheds may be related to differences in land management. In using the R1/R4 Watershed-Scale Fish Habitat Inventory Process, for most habitat variables, evaluations of sample sizes of at least 30 habitat units were adequate. Guidelines…
Keywords: habitat variables, sampling frequency, logging effects, channel morphology, streams
Source: Gen. Tech. Rep. INT-300. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station. 14 p.
Considered endangered by the U.S. Fish and Wildlife Service, the Golden-cheeked Warbler (Setophaga chrysoparia) breeds exclusively in the juniper--oak (Juniperus ashei--Quercus spp.) woodlands of central Texas. Large-scale, spatially explicit models that predict population density as a function of…
Keywords: abundance, density, detection probability, distance sampling, habitat variables, landscape variables, Setophaga chrysoparia
Source: The Condor. 115(3): 659-668.
This user's guide and reference document describes the physical features of the Salmon River Basin, Idaho, stream channels that represent "natural conditions" for fish habitat-that is, streams that have not been influenced by major human disturbances. The data base was created to assist biologists…
Keywords: desired future conditions, habitat variables, multiscale analysis, channel features
Source: Gen. Tech. Rep. INT-GTR-322. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station. 142 p.
This handbook describes the standard inventory procedures for collecting fish habitat and salmonid fish species data for streams managed by the Northern (R1) and Intermountain (R4) Regions of the Forest Service, U.S. Department of Agriculture. The inventory procedures are designed to define and…
Keywords: stream channels, quantifiable and repeatable parameters, fish composition and relative abundance, habitat typing, habitat variables, channel features
Source: Gen. Tech. Rep. INT-GTR-346. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station. 73 p.