Distributed hydrological models rely on a spatial discretization composed of homogeneous units representing different areas within the catchment. Hydrological Response Units (HRUs) typically form the basis of such a discretization. HRUs are generally obtained by intersecting raster or vector layers of land uses, soil types, geology and sub-catchments. Polylines maps representing ditches and riv...

Understanding the partitioning of snow and rain contributing to either catchment streamflow or evapotranspiration (ET) is critical relevance for water management in response climate change. To investigate this partitioning, we use endmember splitting mixing analyses based on stable isotope (18O) data from nine headwater catchments East River, Colorado. Our results show that one third partitions...

The natural environment and livelihoods in the Lower Mekong Basin (LMB) are significantly affected by the annual hydrological cycle. Monitoring of soil moisture as a key variable in the hydrological cycle is of great interest in a number of Hydrological and agricultural applications. In this study we evaluated the quality and spatiotemporal variability of the soil moisture product retrieved fro...

The anthropogenic movement of live fish has been identified as the most important route for the transmission of disease between river catchments. To assist in contingency planning for exotic salmonid disease outbreaks, a stochastic model was developed to assess the potential geographic distribution of an introduced pathogen with time to first detection. The Live Fish Movement Database (a resour...

The network architecture of streams and rivers constrains evolutionary, demographic and ecological processes of freshwater organisms. This consistent architecture also makes stream networks useful for testing general models of population genetic structure and the scaling of gene flow. We examined genetic structure and gene flow in the facultatively paedomorphic Idaho giant salamander, Dicamptod...

Catchment hydrological responses to precipitation inputs, particularly during exceptionally large storms, are complex and variable, our understanding of the associated runoff generation processes those events is limited. Hydrological monitoring climatically hydrologically distinct catchments can help improve this by shedding light on interplay between antecedent soil moisture conditions, connec...

Conservation of species that are patchily distributed must consider processes that influence both the occurrence of individuals within patches, and the persistence of populations across multiple habitat patches within the landscape. Here we present a rare regional assessment of the population size and distribution of a patchily distributed, threatened species, the purple-crowned fairy-wren (Mal...

Hydrological models are usually calibrated for selected catchments individually using specific performance criteria. This procedure assumes that the catchments show individual behavior. As a consequence, the transfer of model parameters to other ungauged catchments is problematic. In this paper, the possibility of transferring part of the model parameters was investigated. Three different conce...

This study explores how catchment heterogeneity and variability can be summarized in simplified models, representing the dominant hydrological processes. It focuses on Mediterranean catchments, characterized by heterogeneous geology, pedology, and land use, as well as steep topography and a rainfall regime in which summer 5 droughts contrast with high-rainfall periods in autumn. The Ardèche cat...

Catchments with response time shorter than a day require simulations at sub-daily resolution for flood forecasting. Long-term hydrological data is lacking many catchments and, thus, it worthwhile to investigate the potential in using model parameters calibrated daily temporal simulate runoff. This study investigates of directly transferring from one-day Hydrological Predictions Environment (HYP...