The development and application of advanced technology and tools coupled with the development of standard practices and data integration efforts will allow the USGS to address landscape level research questions by studying biodiversity of aquatic communities.
Acoustic telemetry is an advanced technology that allows researchers to track fish movement throughout a water body.
Through the use of acoustic telemetry researchers have been able to track lake trout implanted with transmitters in Yellowstone Lake.
A database application to facilitate the sharing and understanding of PIT tag data in the Klamath River Basin of Southern Oregon and Northern California.
Smart River GIS allows simultaneous views of river hydraulics, species-specific habitat, and fish population simulations, for a better understanding of complex ecological interactions.
Our goal is to understand the mechanisms responsible for population dynamics in flowing waters and to provide managers with tools to evaluate alternative management scenarios, effects of habitat fragmentation, changes in stream flow, and likely effects of climate change on persistence of populations.
These models will also provide the opportunity to place local dynamics in the context of broader population dynamics across space.
During analysis of individual reproductive success of wild brook trout using molecular pedigree reconstruction, we have come across the need for certain types of software. Here we provide free access to seven software programs.
We developed a statistical model that accounts for many challenges that can make stream temperature estimation difficult.
We developed an integrated capture–recapture state-space model to estimate the effects of two key environmental drivers (stream flow and temperature) on demographic rates (body growth, movement and survival) using a long-term (11 years), high-resolution (individually tagged, sampled seasonally) data set of brook trout (Salvelinus fontinalis) from four sites in a stream network.
We extended recently developed N-mixture models to demonstrate how demographic parameters and abundance can be estimated for structured populations using only stage-structured count data.
We develop, assess, and apply a drift-foraging bioenergetics model to identify the factors limiting rainbow trout (Oncorhynchus mykiss) growth in a large tailwater.