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We initiated a project in 2011 to identify lake-wide movement patterns and spawning areas of invasive lake trout in Yellowstone Lake, WY. We implanted acoustic transmitters in lake trout and established a network of stationary telemetry receivers in Yellowstone Lake. Lake Trout tagged with acoustic transmitters (Vemco V - series) were tracked with stationary acoustic receivers (Vemco VR2W - 69 kHz) from 2011 to 2015. The number of active receivers ranged from 17 - 65 as short term goals of the project changed. Coordinates for each detection represent the location of the receiver reading the transmitter. Additionally, detection ranges can vary from apporximately 500 - 1200 meters (but see Vemco.com for more details)....
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The climate of the North Central U.S. is driven by a combination of factors, including atmospheric circulation patterns, the region’s complex topography which extends from the High Rockies to the Great Plains, and variations in hydrology. Together, these factors determine the sustainability of the region’s ecosystems and the services that they provide communities. In order to understand the vulnerability of the region’s ecosystems to change, it is necessary to have reliable projections of future climate conditions. To address this need, researchers first examined past and present variations in climate and assessed the ability of climate models to effectively project future climate conditions for the region. Second,...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2012,
CASC,
Completed,
Drought,
Drought, All tags...
Drought, Fire and Extreme Weather,
Drought, Fire and Extreme Weather,
North Central,
North Central CASC,
Projects by Region,
States,
U.S. States,
United States, Fewer tags
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We tracked Lake Trout and a small number Yellowstone Cutthroat Trout using acoustic telemetry (Vemco VR2W - 69 kHz) receivers and transmitters (Vemco V- series) in Yellowstone Lake from 2011 to 2016. This data set consists of the fish taqgging and recapture information. In total, 470 Lake Trout and 21 Yellowstone Cutthroat Trout were tagged with transmitters. Transmitters were surgically implanted into fish greater 405 mm total length. Fish were captured via line sampleing, anesthetized with Aqui-S, and tagged within a few minutes of capture. After recovering in freshwater for no more than 10 minutes, all tagged fish were released into Yellowstone Lake. While limited, recaptured fish information was reported to...
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We collected eggs from female Lake Trout during the fall of 2015 to assess the relationship between female Lake Trout size and the number of eggs produced by individual fish. All data were collected between 7 September and 8 October, 2015. We collected 325 Lake Trout, however, only 44 were females that had eggs held together in a skein. We found a positive correlation between female Lake trout size (length and weight) and the number of eggs produced per female.
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The data set includes fish weight, gonad weight; and for a subset of individuals, histological stage of gonad development for Lake Trout caught in Yellowstone Lake, WY. Data were collected throughout the ice-free season of 2014.
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