Fish
Fish
Filter Total Items: 22
Supporting Interstate Conservation of Atlantic Sturgeon (Acipenser o. oxyrinchus) Using Genetics, Telemetry, and Side-scan Sonar
USGS scientists are using innovative combinations of telemetry, genetics, and side-scan Sonar to support conservation of endangered Atlantic sturgeon ( Acipenser o. oxyrinchus) .
Using Multiple Indicators to Assess Stream Condition in the Chesapeake Bay
USGS is working with federal, state and local partners to develop multiple assessments of stream and river conditions in non-tidal areas of the Chesapeake Bay watershed. These assessments will help managers preserve stream health and improve biological conditions in impaired streams as the human population and climate continue to change in this region.
New studies reveal ecological importance of fine-scale groundwater connectivity for streams during drought
Stream ecosystems support vital resources that may be jeopardized by climate change and climate stressors such as drought.
Sturgeon Occurrence and Behavior in the Outer Continental Shelf
A new study aims to collect information on sturgeon temporal and spatial distribution to inform offshore wind energy and sand leasing operations.
Invasive Blue Catfish Science to Support Conservation and Fisheries Management
Dietary analyses, health, and reproduction of blue catfish in tributaries of the Chesapeake Bay inform ecosystem impacts and mitigation strategies for this aquatic nuisance species.
Eastern Ecological Science Center partnership with Atlantic States Marine Fisheries Commission
Collaboration between the world-class expertise of USGS scientists, the Atlantic States Marine Fisheries Commission’s Science Program, and state and federal fishery agencies demonstrates the power of partnerships to solve seemingly-insurmountable problems in sustainable and cooperative management of Atlantic coastal fisheries.
Alosine Genetic Stock Identification and Tissue Repository
American Shad ( Alosa sapidissima ), Blueback Herring ( Alosa aestivalis ), and Alewife ( Alosa pseudoharengus ; collectively “alosines”) once supported large fisheries along the U.S. Atlantic Coast. However, impassable migration barriers, declines in habitat quality, and exploitation have led to declines in many spawning populations. Substantial resources have been invested to support the...
Assessing Faunal Recovery in a Headwater Stream
A catastrophic fish-kill in a small tributary stream of the Etowah River system (Dawson County, Georgia) has created the opportunity to assess faunal recovery, including recolonization by a federally-listed fish species (the Cherokee darter Etheostoma scotti ). Fishes are expected to recolonize Flat Creek by moving upstream from downstream sources. In particular, Flat Creek flows into a larger...
Assessing stream health and fish habitat in streams of the Chesapeake Bay Watershed
Streams and rivers provide habitat for a diverse array of aquatic and semi-aquatic species. However, human alteration to landscapes and riverscapes has affected this habitat resulting in its degradation and thus loss of habitat and associated sensitive aquatic species. While this relationship has been known for many years, only recently has the availability of data and analytical capabilities...
Exploring the potential effects of shale oil and gas development on freshwaters
Widespread shale oil and gas (unconventional oil and gas, UOG) has only recently begun and many gaps in our knowledge of its potential effects to freshwaters exist.
Fish locomotion and biomechanics as limiting and optimizing factors in fish passage
Swimming ability determines how well fish are able to access habitat, and is a fundamental design consideration for passing fish at dams, road crossings, etc.
Deepwater Atlantic Habitats II: Continued Atlantic Research and Exploration in Deepwater Ecosystems with Focus on Coral, Canyon, and Seep Communities. Part II: Genetic Connectivity and Oceanomic Studies
This study utilizes genetics and genomics techniques to characterize biodiversity and genetic connectivity among deep-sea coral habitats and cold seeps in and near submarine canyons and will use environmental DNA techniques to characterize plankton diversity and to identify key contributors to carbon export from surface waters that sustain sensitive benthic communities. The proposed genetics and...