Data describing long-term sediment yield rates on semiarid rangeland watersheds are relatively rare. To augment existing data and gain a better understanding of the controlling variables, sediment yields from 8 subwatersheds within the US Department of Agriculture–Agricultural Research Service Walnut Gulch Experimental Watershed in southeastern Arizona were computed from stock pond sediment acc...

This paper describes estimation of stream channel geometry with multiple regression analysis of GISderived watershed characteristics including drainage area, catchment-averaged precipitation, mean watershed slope, elevation, forest cover, percent area with slopes greater than 30 percent, and percent area with north-facing slopes greater than 30 percent. Results from this multivariate predictor ...

This study presents a novel landscape classification map of the Republic Ireland and is first to identify broad classes by incorporating physiographic land cover data. The responds commitments classify Irish as signatory European Landscape Convention. methodology applied series clustering iterations determine an objective multivariate units datasets. results determined nine statistically signif...

An updated checklist of the distribution of fishes that inhabit the continental waters of the Mexican state of Chiapas is presented. The state was compartmentalized into 12 hydrological regions for the purpose of understanding the distribution of fish fauna across a state with large physiographic variance. The ichthyofauna of Chiapas is represented by 311 species distributed in two classes, 26 ...

Experimental replication of watersheds of substantial size is impractical; it is impossible to achieve uniformity of topographic, edaphic, and physiographic conditions in such watersheds. Some other approach to the development of experimental error is needed if it is necessary to apply parametric statistical tests in this situation. We tackled this question with a study design that used time, r...