1. We used field surveys to compare the density and mesohabitat-scale distribution of the native coastrange sculpin (Cottus aleuticus) and the prickly sculpin (C. asper) in coastal rivers in north-western California, U.S.A., with and without an introduced piscivorous fish, the Sacramento pikeminnow, Ptychocheilus grandis. We also measured mortality of tethered prickly sculpin in a field experim...

Mountain landscapes have dynamic climates that, together with tectonic processes, influence their topographic evolution. Spatial and temporal variations in rainfall are ubiquitous these settings as orographic precipitation patterns evolve climate change topography. Despite important implications such changes for river incision, is understudied. Here, we investigate how pattern should affect bot...

Abstract. Modeling the dynamics of alluvial rivers is theoretically and numerically more challenging than modeling erosion bedrock channels in active mountain ranges. As a consequence, majority approaches developed context are one-dimensional. However, recent advances numerics fluvial landform evolution models allow for two-dimensional simulations sediment transport over time spans several mill...

Austropotamobius torrentium (Schrank, 1803) lives in two watercourses, namely Subotica (Sana) and Toplik (Tilava). The influence of the ecological conditions these rivers on individuals this species is analyzed based 22 morphometric parameters. assessment abiotic was done through measurement physical chemical water parameters analysis composition phytobenthos macrozoobenthos. Sampling carried o...

Blancher, Marc, François Albasini, Fidel Elsensohn, Ken Zafren, Natalie Hölzl, Kyle McLaughlin, Albert R. Wheeler III, Steven Roy, Hermann Brugger, Mike Greene, and Peter Paal. Management of multi-casualty incidents in mountain rescue. High Alt Med Biol. 00:000-000, 2018. INTRODUCTION Multi-Casualty Incidents (MCI) occur in mountain areas. Little is known about the incidence and character of ...

Flow resistance in open channels determines the average flow velocity a river, with important implications for downstream and at-a-station hydraulic geometry sediment transport natural channels. However, steep mountain is challenging to understand predict due heterogeneous channel morphology spatially variable flow. Using double-averaging approach appropriate very rough channels, width, reach, ...