Results 181 to 190 of about 143,614 (329)
Making Waves: The Effects of Whitewater Parks on Fish Passage in Colorado
River Research and Applications, EarlyView.ABSTRACT Instream structures have fragmented riverine habitats throughout much of the world, including the Western USA. Whitewater parks (WWPs) are relatively new instream structures designed to create hydraulic waves for recreational boating and surfing by constricting flows into a steep chute or drop.
Eric E. Richer +5 more
wiley +1 more source
Recreational fishing downstream from the Black Butte Mine Superfund Site in Oregon, USA. [PDF]
Sci RepRothenberg SE, Flores AC, Anderson MK.
europepmc +1 more source
River Research and Applications, EarlyView.ABSTRACT Braided rivers are some of the most dynamic and complex river systems in the world. They provide unique habitat to rare species, supply natural resources, and act as a source of groundwater recharge. However, they can also pose significant flooding and erosion hazards. Current management of braided rivers in Aotearoa New Zealand faces a strong
Clare Wilkinson +5 more
wiley +1 more source
Avoiding the ‘One‐Size‐Fits‐All’ Trap in Policy‐Based Monitoring
River Research and Applications, EarlyView.ABSTRACT Policy‐based monitoring programmes often fail to yield the information required to assess and improve policies and plans. A dominant cause of this problem is the ‘one‐size‐fits‐all’ (OSFA) trap—a failure to recognise that several, complementary types of monitoring are required to support effective policy.
Rick J. Stoffels, Ross M. Thompson
wiley +1 more source
Illegal recreational fishing causes a decline in a fishery targeted species (Snapper: Chrysophrys auratus) within a remote no-take marine protected area. [PDF]
PLoS One, 2019 Harasti D +4 more
europepmc +1 more source
Remote Sensing in Ecology and Conservation, EarlyView.In this study, we combine tourist‐contributed images with camera trap‐based monitoring data to estimate leopard (Panthera pardus) population densities using multi‐session spatial capture–recapture models. We show that incorporating tourist observations improves precision and yields an overall density estimate of 7.02 leopards per 100 km2, while ...
Rachael S. Leeman +6 more
wiley +1 more source
From the lab to the field: Cooperation among fishermen [PDF]
We conduct a field experiment to measure cooperation among groups of recreational fishermen at a privately owned fishing facility. The parameters are chosen so that group earnings are greater when group members catch fewer fish, as in the Voluntary ...
Noussair, Charles +2 more
core +1 more source
Remote Sensing in Ecology and Conservation, EarlyView.Targeted conservation measures are contingent on robust knowledge of spatio‐temporal animal distribution in areas of interest. We explore unmanned aerial vehicle (UAV) transect monitoring as a novel method for standardized digital aerial surveys of marine megafauna by investigating the fine‐resolution spatio‐temporal distribution of harbour porpoises ...
Dinah Hartmann +2 more
wiley +1 more source
Angler Heterogeneity and the Species-Specific Demand for Marine Recreational Fishing [PDF]
In this study we assess the viability of single-species recreation demand models given commonly available data sets. Using the 2000 MRFSS southeast intercept data combined with the economic add-on, we determine that the MRFSS data will support only a few
John C. Whitehead +3 more
core