Wetland and Aquatic Research Center
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WARC conducts relevant and objective research, develops new approaches and technologies, and disseminates scientific information needed to understand, manage, conserve, and restore wetlands and other aquatic and coastal ecosystems and their associated plant and animal communities throughout the nation and the world.
Science for Detection, Containment, and Control of Invasive Species
USGS scientists focus on the development of innovative prevention, prediction, early detection, containment, and control tools.
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WARC ScienceNews
USGS Shares Coastal Hazards, Ecosystems Science with Local Community at the St. Petersburg Science Festival
The St. Petersburg Coastal and Marine Science Center and the Wetland and Aquatic Research Center shared USGS science via live sessions and pre-recorded videos at the annual St. Pete Science Festival.
Extreme Rainfall and Flooding Contributes to Sudden Vegetation Dieback in Texas Salt Marsh
Sudden vegetation dieback events in salt marshes have historically been linked to severe drought, but a new U.S. Geological Survey study reports the first documented example of such an event being triggered by extreme rainfall and flooding.
Genetics Helps Unravel Invasive Lionfish Introduction Scenarios
A new USGS study finds a lack of evidence to support the widely accepted introduction scenario in which the invasive lionfish originated solely from Florida and identifies alternative introduction pathways.
Publications
A protocol for modelling generalised biological responses using latent variables in structural equation models
In this paper we consider the problem of how to quantitatively characterize the degree to which a study object exhibits a generalized response. By generalized response, we mean a multivariate response where numerous individual properties change in concerted fashion due to some internal integration. In latent variable structural equation modeling (...
Akomolafe, Gbenga; Grace, James; Steiner, Magdalena Instrumental variable methods in structural equation models
Instrumental variable regression (RegIV) provides a means for detecting and correcting parameter bias in causal models. Widely used in economics, recently several papers have highlighted its potential utility for ecological applications. Little attention has thus far been paid to the fact that IV methods can also be implemented within structural...
Morrissey, Michael; Grace, James Extreme precipitation and flooding contribute to sudden vegetation dieback in a coastal salt marsh
Climate extremes are becoming more frequent with global climate change and have the potential to cause major ecological regime shifts. Along the northern Gulf of Mexico, a coastal wetland in Texas suffered sudden vegetation dieback following an extreme precipitation and flooding event associated with Hurricane Harvey in 2017. Historical salt marsh...
Stagg, Camille; Osland, Michael; Moon, Jena A.; Feher, Laura; Laurenzano, Claudia; Lane, Tiffany C.; Jones, William; Hartley, Stephen