Ungulate migration is one of the world’s most awe-inspiring animal behaviors, and it has important ecological benefits for the migrating species, as well as cascading effects throughout terrestrial food webs. Yet, ungulate migrations have been declining globally due to factors such as anthropogenic disturbances and environmental change.
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Mule deer in Wyoming
Ungulate migration is one of the world’s most awe-inspiring animal behaviors, and it has important ecological benefits for the migrating species, as well as cascading effects throughout terrestrial food webs. Yet, ungulate migrations have been declining globally due to factors such as anthropogenic disturbances and environmental change.
Masters student Lila Warren documented that muskellunge in her study rivers were reproducing all by themselves and hatchery fish, in all likelihood, do not need to be stocked to sustain the fishery.
Masters student Lila Warren documented that muskellunge in her study rivers were reproducing all by themselves and hatchery fish, in all likelihood, do not need to be stocked to sustain the fishery.Biologists in North America have been studying the effectiveness of fish stocking programs ever since fish were artificially spawned, reared, and stocked in the late 1800s.
Masters student Lila Warren documented that muskellunge in her study rivers were reproducing all by themselves and hatchery fish, in all likelihood, do not need to be stocked to sustain the fishery.
Masters student Lila Warren documented that muskellunge in her study rivers were reproducing all by themselves and hatchery fish, in all likelihood, do not need to be stocked to sustain the fishery.Masters student Lila Warren documented that muskellunge in her study rivers were reproducing all by themselves and hatchery fish, in all likelihood, do not need to be stocked to sustain the fishery.
Masters student Lila Warren documented that muskellunge in her study rivers were reproducing all by themselves and hatchery fish, in all likelihood, do not need to be stocked to sustain the fishery.Biologists in North America have been studying the effectiveness of fish stocking programs ever since fish were artificially spawned, reared, and stocked in the late 1800s.
Graduate student holds a pallid sturgeon
Graduate student holds a pallid sturgeon. The goal of this study is to assess latitudinal variation in growth rates of pallid sturgeon and shovelnose sturgeon and determine how those rates are affected by diet and temperature.
Graduate student holds a pallid sturgeon. The goal of this study is to assess latitudinal variation in growth rates of pallid sturgeon and shovelnose sturgeon and determine how those rates are affected by diet and temperature.
USGS Montana Fishery Research Unit research vessel and white truck
USGS Montana Fishery Research Unit research vessel and white truckResearch of the Montana Cooperative Fishery Research Unit will continue to focus on applied fisheries-management problems and issues. Our studies are initiated in response to the needs of the Cooperators and other management agencies and are designed to provide information useful in directly improving management of aquatic resources.
USGS Montana Fishery Research Unit research vessel and white truck
USGS Montana Fishery Research Unit research vessel and white truckResearch of the Montana Cooperative Fishery Research Unit will continue to focus on applied fisheries-management problems and issues. Our studies are initiated in response to the needs of the Cooperators and other management agencies and are designed to provide information useful in directly improving management of aquatic resources.
Lila Warren holds a microtagged muskellunge fish
Lila Warren at the USGS Tennessee Cooperative Fishery Research Unit holds a muskellunge fish. To prevent the disappearance of muskellunge from the Cumberland Plateau, the Tennessee Wildlife Resources Agency (TWRA) began stocking muskellunge into the upper Caney Fork River system above Great Falls Dam in 1976.
Lila Warren at the USGS Tennessee Cooperative Fishery Research Unit holds a muskellunge fish. To prevent the disappearance of muskellunge from the Cumberland Plateau, the Tennessee Wildlife Resources Agency (TWRA) began stocking muskellunge into the upper Caney Fork River system above Great Falls Dam in 1976.
Black bears spotted on a trail camera
USGS researchers at the New York Cooperative Fish and Wildlife Research Unit are using trail cameras to track bobcats, black bears, and coyotes across New York. The researchers created an online database where the public can report wildlife sightings.
USGS researchers at the New York Cooperative Fish and Wildlife Research Unit are using trail cameras to track bobcats, black bears, and coyotes across New York. The researchers created an online database where the public can report wildlife sightings.
Diamond darter
Diamond darter from the Elk River from Kanawha County, West Virginia in 2008.
Diamond darter from the Elk River from Kanawha County, West Virginia in 2008.
Passage of adult Atlantic salmon in the Penobscot River, Maine
Passage of adult Atlantic salmon in the Penobscot River, MaineAtlantic salmon runs in the Penobscot and Kennebec Rivers of Maine are federally endangered and remain low. Inefficient fishways at dams continue to slow and prevent upstream migrations to spawning habitat, and delays of weeks to months are common. These delays expose fish to elevated water temperatures, resulting in increased metabolic demands.
Passage of adult Atlantic salmon in the Penobscot River, Maine
Passage of adult Atlantic salmon in the Penobscot River, MaineAtlantic salmon runs in the Penobscot and Kennebec Rivers of Maine are federally endangered and remain low. Inefficient fishways at dams continue to slow and prevent upstream migrations to spawning habitat, and delays of weeks to months are common. These delays expose fish to elevated water temperatures, resulting in increased metabolic demands.
Ryan Gary holding a paddlefish in Oklahoma
Ryan’s thesis research focuses on the importance of appropriate spawning substrate as a key driver of paddlefish restoration success in reservoirs of Oklahoma. Paddlefish, an important sportfish, have been stocked in reservoirs throughout the State, but these stocking efforts have had variable success.
Ryan’s thesis research focuses on the importance of appropriate spawning substrate as a key driver of paddlefish restoration success in reservoirs of Oklahoma. Paddlefish, an important sportfish, have been stocked in reservoirs throughout the State, but these stocking efforts have had variable success.