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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)....
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,
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...
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.
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.
These data show the placement of acoustic telemetry receivers in Yellowstone Lake between 2011 and 2015. Receivers were placed in the lake to record fish movement throught the year. This data release shows the coordinates, timing, and receiver ID for each for each receiver deployment.
These data show triangulated results from Vemco Positioning Systems (VPS; https://vemco.com/products/vps/) set in Yellowstone Lake, WY. The data consist of transmissions from acoustic transmitters placed in fish to 69 kHz receivers. Field data were sent to Vemco for processing (proprietary software) and processed to determine the triangluated results shared within this data set. The data provided show triangulated positions of Lake Trout within suspected spawaning locations in Yellowstone Lake. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Eastern Montana Fisheries Community is using ScienceBase to document and study future streamflow and fisheries data in eastern Montana. Streams in the Northern Great Plains provide critical “green lines” of habitat for aquatic and terrestrial wildlife. The fish in these streams have evolved to survive heat, cold, floods, and drought. However, changes in water quantity associated with global climate change may transform some prairie streams from essential refuges to habitats no longer capable of supporting fishes. U.S. Geological Survey researchers and their partners are studying these potential changes in stream ecosystems in the Montana portion of the northern Great Plains. The Precipitation-Runoff Modeling System...
Understanding how climate change will influence habitat for interior species of native salmonids is critical for effective management and recovery of these species. The US Department of the Interior, the US Department of Agriculture, state fisheries managers, and non-governmental organizations are increasingly challenged in attempting the recovery and restoration of native trout and salmon throughout their range. USGS scientists, in partnership with the US Forest Service and Trout Unlimited, completed a database including all existing species distributions and habitat information, and air and water temperature data for the interior West. Maps defining existing and projected future distributions of native salmonids,...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2008,
CASC,
Completed,
Fish,
Fish,
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. In 2015-2016, we assessed the lake trout maturation cycle and reproductive potential in Yellowstone Lake by sampling lake trout that had been captured in suppression nets and euthanized. A gonadal-somatic index (GSI) was developed to provide an initial index of the lake trout maturation cycle and gonadal...
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