National and regional comparisons between Strahler order and stream size

摘要: AbstractWater-body size is one of the most important factors affecting structure and function aquatic ecosystems. The categorical variable, Strahler stream order, commonly used as a surrogate for size, perhaps because multidimensional attribute that defies simple definition. Some stream-size attributes, including continuous variables, such catchment area, distance to source, model estimates discharge also are available geographic information system (GIS)-derived or modeled variables. These GIS measures by ecologists along with field-derived discharge, cross-sectional width, depth, which more direct experienced organisms. Our objective was quantify how well some attributes predicted from order in US whole within major ecoregions hydrologic landscape regions. We based our analysis on field-channel-sur...