Wetland and Aquatic Research Center


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. 

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Science for Detection, Containment, and Control of Invasive Species

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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Date published: September 7, 2021

Southeast Region (SER) Science Workshop: Identifying Science to Meet Administration Priorities and the Needs of Our Stakeholders

The fourth annual SER Science Workshop, held virtually July 13-16, 2021, addressed four administration priorities – underserved communities, tribal engagement, conserving 30% of our lands and waters by 2030, and tackling the climate crisis. 

Date published: September 2, 2021

Friday's Findings - September 10 2021

Thresholds and Consequences of Ecophysiological Water Use in Forested Wetlands of the Southeast with Salinity: Why We Study Trees

Date: September 10, 2021 from 2-2:30 p.m. eastern time

Speakers:  Ken Krauss, Research Ecologist, USGS Wetland and Aquatic Research Center; Jamie Duberstein, Research Professor, Clemson University;...


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Year Published: 2021

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

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Year Published: 2021

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

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Year Published: 2021

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