Wetland and Aquatic Research Center

Ecological Stressors

Research into the cause and mitigation of environmental and anthropogenic stressors that potentially impact the health and productivity of lands and waters of management concern. Current focal areas include wildland fire, extreme storm events (droughts, floods, and hurricanes), climate change (sea level, warming, and precipitation), mining, and timbering.
Filter Total Items: 98
Date published: August 13, 2021
Status: Active

Climate Change Science at WARC

USGS science plays an essential role in helping natural resource managers, communities, and policy makers prepare and mitigate for changing environmental conditions.

Date published: December 14, 2020
Status: Active

Detecting Sublethal Effects of Harmful Algal Blooms in Mammalian and Avian Cells

USGS Researchers are collaborating to study avian and mammalian cells to detect sublethal toxin effects following exposure to harmful algal blooms. 

Date published: October 29, 2020
Status: Active

Enhancing Cross-Jurisdictional Adaptive Management in the Gulf of Mexico

Using an iterative qualitative coding process, WARC researchers are identifying objectives, stressors, and management priorities to support the implementation of adaptive management in restoration programs across the Gulf of Mexico.

Date published: September 18, 2020
Status: Active

Adapting to Climate Change: Trends and Severe Storm Responses by Migratory Landbirds and Their Habitats

USGS scientists will be analyzing weather surveillance radar observations of birds departing stopover habitats to measure responses to climate change.

Contacts: T.J. Zenzal, Ph.D., Dr. Jeff Buler, Randy Wilson
Date published: July 29, 2020
Status: Active

Using Occupancy Analysis to Understand Ecological and Environmental Stressors that Affect the Range and Abundance of Gulf Coast Waterdogs (Necturus beyeri) in Louisiana Bayous

Sampling for Gulf Coast waterdogs is providing essential information to better understand the factors that impact the species' occupancy across Louisiana.

Date published: June 4, 2020
Status: Active

Interaction of Environmental Stressors and Batrachochytrium dendrobatidis (Bd) Pathogen Loads on Survival of Green Frogs (Lithobates clamitans)

The U.S. Geological Survey Amphibian Research Monitoring Initiative (ARMI) is using a combination of swabbing, non-lethal tissue sampling, soil and water sampling, and collection of a variety of other environmental variables to determine the relationships between the prevalence and pathogen load of Bd infection and environmental stressors on green treefrog survival.

Date published: May 28, 2020
Status: Active

Capture-Mark-Recapture of Treefrogs at Bayou Teche National Wildlife Refuge

WARC researchers are gathering amphibian data to better understand the impact of natural disasters on treefrog populations and examine post-event processes.

Date published: February 26, 2020
Status: Active

Impacts of coastal and watershed changes on upper estuaries: causes and implications of wetland ecosystem transitions along the US Atlantic and Gulf Coasts

Estuaries and their surrounding wetlands are coastal transition zones where freshwater rivers meet tidal seawater.  As sea levels rise, tidal forces move saltier water farther upstream, extending into freshwater wetland areas. Human changes to the surrounding landscape may amplify the effects of this tidal extension, impacting the resiliency and function of the upper estuarine wetlands. One...

Contacts: Ken Krauss, Ph.D., Gregory Noe, Camille LaFosse Stagg, Ph.D., Hongqing Wang, Ph.D., Eric J Ward, Ph.D., Jamie A. Duberstein, William H. Conner, Zhaohua Dai, Thomas L. O'Halloran
Date published: January 28, 2020
Status: Active

Contaminants Assessment in the Coral Reefs of the Virgin Islands National Park and Virgin Islands Coral Reef National Monument

USGS collected samples at reef locations within the Virgin Islands National Park and analyzed for the presence of contaminants, organotin compounds, or sunscreen compounds.

Date published: June 28, 2019
Status: Active

Multispecies Operational Forecasting in the Florida Everglades

A USGS forecasting tool helps Everglades natural resource managers identify management actions that can benefit one or more species while quantifying the potential costs to others. 

Date published: June 4, 2019
Status: Active

Connectivity of Coral Ecosystems in the Northwestern Gulf of Mexico

Connectivity among coral communities influences the probability of speciation and contributes to their ability to adapt to natural and anthropogenic stressors. Results from this study will enhance our understanding of Gulf of Mexcio ecosystems with regional conservation initiatives to inform the restoration of degraded deepwater coral communities and preserve long-term viability of coastal...