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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...

Introduction. Deuteronilus Mensae is a ~1000 km wide area along the highland/lowland dichotomy boundary in the northern mid-latitudes of Mars. In this region, features diagnostic of Martian 'fretted' terrain are observed, including lobate debris aprons, lineated valley fill, and concentric crater fill [1-5]. South of Deuteronilus Mensae are the rugged cratered highlands of Arabia Terra and nort...

Scale invariance of daily runoff time series in agricultural watersheds X. Zhou, N. Persaud, and H. Wang Department of Crop and Soil Sciences, The Pennsylvania State University, University Park, PA 16802, USA Department of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA Soil and Water Science Department, University of Florida,...

The Catskill Mountains of southeastern New York receive relatively high rates of atmospheric N deposition, and NO3 concentrations in some streams have increased dramatically since the late 1960s. We measured the chemistry of 39 firstand second-order streams with forested watersheds to determine the variability of nitrogen concentrations within the Catskill Mountain area. We found that some stre...

The expansion and intensification of soya bean agriculture in southeastern Amazonia can alter watershed hydrology and biogeochemistry by changing the land cover, water balance and nutrient inputs. Several new insights on the responses of watershed hydrology and biogeochemistry to deforestation in Mato Grosso have emerged from recent intensive field campaigns in this region. Because of reduced e...

Landslides mapped in 14 watershed analyses in Oregon and Washington provide a regional test of a model for shallow landsliding. A total of 3224 landslides were mapped in watersheds covering 2993 km and underlain by a variety of lithologies, including Tertiary sedimentary rocks of the Coast Ranges, volcanic rocks of the Cascade Range and Quaternary glacial sediments in the Puget Lowlands. GIS (g...

The objectives of this study were to evaluate fish guild compositions and national river health using a multi-metric model of the Korean index of biological integrity using fishes (K-IBIF) in four major Korean watersheds along with water chemistry and habitat quality. Tolerant and omnivore fish species dominated all the watersheds, and the proportions of tolerance guilds and trophic guilds refl...