Donald J. Orth

TL;DR: In this paper, a study was conducted to determine whether landscape-based regional frameworks could explain variation in streamflow classifications and in the hydrologic variables used in their creation.

TL;DR: The index of biotic integrity (IBI) as discussed by the authors integrates 12 measures of stream fish assemblages for assessing water resource quality and has been adapted for use in western Oregon, northeastern Colorado, New England, the Appalachians of West Virginia and Virginia, and northern California.

TL;DR: In this paper, the authors reviewed the ecological factors relating to stream ecology, population dynamics, energetics, predation, and competition to explain why indices of microhabitat availability are not expected to be consistent predictors of fish population density.

TL;DR: Fish species and life stage composition and densities differed among habitat types, and five habitat-use guilds were proposed, and nearshore, structurally complex habitats seem important in influencing the assemblage structure of fishes of large streams.

TL;DR: In this paper, two critical assumptions were tested and the incremental methodology was applied in a warmwater stream in southeast Oklahoma, and the relation between standing stock and usable habitat (weighted usable area) was investigated for these species as well as for adult and juvenile smallmouth bass Micropterus dolomieui.