Ecosystems

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Filter Total Items: 715
Date published: December 13, 2018
Status: Active

WFRC Ecology Section - Projects Overview

The Ecology Section examines how environmental variability, human activities and infrastructure influence food web interactions and species performance in freshwater and marine ecosystems. We have extensive experience in quantifying aquatic food web processes as they relate to growth, survival and production of key species of interest, especially resident and anadromous salmonids.

Date published: December 12, 2018
Status: Active

Life History and Migration of Sturgeons in New England Waters

Sturgeons appear in the fossil record as early as the Triassic, 200 million years ago.  Although most populations could once tolerate harvesting pressures, most populations have collapsed and nearly all of the 28 species alive today are listed as threatened or endangered.  In New England, dams and water regulation challenge population recoveries of the two resident species, the shortnose and...

Contacts: Micah Kieffer
Date published: December 4, 2018
Status: Active

Life History of Pacific Northwest Fishes through Age and Growth Structures

The focus of our research is the ecological analysis of Pacific Northwest fishes through age and growth structures such as: scales, fin rays and otoliths (small calcium carbonate deposits beneath the brain used in hearing and balance that grow in proportion to the overall growth of the fish). These structures are utilized as research tools for understanding life histories and habitat...

Date published: November 29, 2018
Status: Active

Human and Ecological Health Impacts Associated with Water Reuse and Conservation Practices

Human and Ecological Health Impacts Associated with Water Reuse and Conservation Practices

Date published: November 29, 2018
Status: Completed

Molecular characterization of unknown virus isolated from the introduced species, the Northern snake head (Channa argus), present in the Chesapeake Bay Watershed

Molecular characterization of unknown virus isolated from the introduced species, the Northern snake head (Channa argus), present in the Chesapeake Bay Watershed

Date published: November 29, 2018
Status: Active

Endocrine Disrupting Chemicals and Prevalence of Intersex in Fish Populations in New Jersey

Endocrine Disrupting Chemicals and Prevalence of Intersex in Fish Populations in New Jersey

Date published: November 13, 2018
Status: Active

Evaluating the pathogenicity and replication of a novel aquareovirus that infects the endangered fountain darter, Etheostoma fonticola

Evaluating the pathogenicity and replication of a novel aquareovirus that infects the endangered fountain darter, Etheostoma fonticola

Date published: November 1, 2018
Status: Active

Using Molecular Tools to Recalibrate Freshwater Mussel Taxonomy with a Focus on Imperiled Species

Freshwater mussels of the family Unionidae, also known as naiads, pearly mussels, freshwater clams, or unionids, are a diverse group of bivalve mollusks that are distributed on every continent except Antarctica. Approximately 300 species are known from the United States, with most of this diversity residing in rivers of the Southeast where many endemic taxa have evolved.

Date published: October 31, 2018
Status: Active

Wildlife Tracking/Telemetry

USGS scientists use tracking/telemetry tags to determine the occurrence and local movement patterns of wildlife. Because energy development often takes place in critical wildlife habitats, scientists can study these wildlife patterns to help guide project siting and operational decisions to areas and practices that present the lowest risk to energy development and wildlife.

Contacts: Mona Khalil
Date published: October 31, 2018
Status: Active

Management Support Tools

USGS scientists build broadly applicable management support tools to assist resource managers and the industry in siting of energy development and selection of off-site mitigation areas.

Contacts: Mona Khalil
Date published: October 31, 2018
Status: Active

Demographic and Population Models

USGS scientists are currently developing models for species of interest that can be overlaid with maps showing areas of potential energy. These models, or map overlays, identify areas of biological strengths and weaknesses or high- and low-quality habitat and can identify opportunities for conservation—areas of high-quality habitat where energy-generating potential is low—and areas of...

Contacts: Mona Khalil