Publications
Explore WARC's science publications.
Filter Total Items: 3543
Prioritizing bottomland hardwood forest sites for protection and augmentation Prioritizing bottomland hardwood forest sites for protection and augmentation
Bottomland hardwood forest has been greatly diminished by conversion to agriculture. Less than 25% of the pre-Columbian bottomland hardwood forests remain in the southeastern United States. Because of the valuable ecological and hydrological functions performed by these forests, their conservation and restoration has been a high priority. Part of these restoration efforts has focused on...
Authors
J. Carter, J. Biagas
Hypoxia tolerance of two centrarchid sunfishes and an introduced cichlid from karstic Everglades wetlands of southern Florida, U.S.A. Hypoxia tolerance of two centrarchid sunfishes and an introduced cichlid from karstic Everglades wetlands of southern Florida, U.S.A.
In this study, the hypoxia tolerance of three Everglades fishes, two native centrarchids (Lepomis gulosus and Lepomis marginatus) and a recently introduced cichlid (Hemichromis letourneuxi), were documented. Aquatic surface respiration (ASR) thresholds were lowest for H. letourneuxi, followed by L. gulosus, then L. marginatus. The ASR thresholds for L. marginatus were within ranges...
Authors
P. J. Schofield, W.F. Loftus, M.E. Brown
Effects of Hurricane Katrina’s storm surge on the quality of shallow aquifers near the northern shoreline of Lake Pontchartrain, southeastern Louisiana Effects of Hurricane Katrina’s storm surge on the quality of shallow aquifers near the northern shoreline of Lake Pontchartrain, southeastern Louisiana
The U.S. Geological Survey (USGS) sampled 13 wells on the northern shoreline of Lake Pontchartrain to determine the effect of Hurricane Katrina-induced storm surge water on the shallow groundwater resources. Surge water entering damaged wells did not contaminate the entire aquifer; however, contamination did occur locally at well sites. Because the storm surge from Katrina lasted only a...
Authors
Dan J. Tomaszewski, John K. Lovelace
Subtidal sea level variability in a shallow Mississippi River deltaic estuary, Louisiana Subtidal sea level variability in a shallow Mississippi River deltaic estuary, Louisiana
The relative roles of river, atmospheric, and tidal forcings on estuarine sea level variability are examined in Breton Sound, a shallow (0.7 m) deltaic estuary situated in an interdistributary basin on the Mississippi River deltaic plain. The deltaic landscape contains vegetated marshes, tidal flats, circuitous channels, and other features that frictionally dissipate waves propagating...
Authors
G.A. Snedden, J.E. Cable, W.J. Wiseman
Short-term disruption of a leafy spurge (Euphorbia esula) biocontrol program following herbicide application Short-term disruption of a leafy spurge (Euphorbia esula) biocontrol program following herbicide application
Integrated pest management (IPM) for invasive plant species is being advocated by researchers and implemented by land managers, but few studies have evaluated the success of IPM programs in natural areas. We assessed the relative effects of components of an IPM program for leafy spurge (Euphorbia esula), an invasive plant, at Theodore Roosevelt National Park, North Dakota. Effects of...
Authors
D.L. Larson, J.B. Grace, P.A. Rabie, P. Andersen
Testing tail-mounted transmitters with Myocastor coypus (nutria) Testing tail-mounted transmitters with Myocastor coypus (nutria)
We developed a tail-mounted radio-transmitter for Myocastor coypus (nutria) that offers a practical and efficient alternative to collar or implant methods. The mean retention time was 96 d (range 57-147 d, n = 7), making this a practical method for short-term studies. The tail-mounts were less injurious to animals than collars and easier for field researchers to implement than either...
Authors
S. Merino, J. Carter, G. Thibodeaux
Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative
Authors
Janet M. Ruth, Albert Manville, Ron Larkin, Wylie C. Barrow, Lori Johnson-Randall, Deanna K. Dawson, Robert H. Diehl, Yufang Wang, Richard S. Sojda, Rafal Angryk, Robert W. Klaver, Reggie Mead, John Paxton, Patricia J. Heglund, Eileen Kirsch, Manuel J. Suarez, Larry Robinson, Sidney A. Gauthreaux, Carroll G. Belser, Steven J. Franke, Bruno Bruderer, Jeffrey J. Buler, Frank R. Moore, David S. Mizrahi, Robert Fogg, T. Adam Kelly, Paul M. Cryan, Tim Crum, Terry J. Schuur, Dave Krueper, Robb Diehl, Tom Will
Fen management and research perspectives: An overview Fen management and research perspectives: An overview
No abstract available.
Authors
Beth A. Middleton, A. Grootjans, K. Jensen, Harry Olde Venterink, Katalin Margoczi
Data collection network to support ecosystem forecasting for the Barataria Basin - Mississippi River domain Data collection network to support ecosystem forecasting for the Barataria Basin - Mississippi River domain
Ecosystem forecasting is limited by a number of uncertainties including inadequate initialization information, unknown boundary conditions, inaccurate model physics and atmospheric forcing functions, and inadequate algorithm development of geomorphic and ecological responses to hydrodynamic and geophysical processes. Monitoring can help reduce these uncertainties by providing numerical...
Authors
Gregory D. Steyer, Alaina Owens, Brady Couvillion
An integrated monitoring approach using multiple reference sites to assess sustainable restoration in coastal Louisiana An integrated monitoring approach using multiple reference sites to assess sustainable restoration in coastal Louisiana
Achieving sustainable resource management in coastal Louisiana requires establishing reference conditions that incorporate the goals and objectives of restoration efforts. Since the reference condition is usually considered sustainable, it can be a gauge to assess the present condition of a (degraded) system or to evaluate progress of management actions toward some target system state...
Authors
Gregory D. Steyer, Robert R. Twilley, Richard C Raynie
Wetland researchers on the hurricane front lines Wetland researchers on the hurricane front lines
Close proximity to the Gulf Coast and its expansive wetland ecosystem made Lafayette, Louisiana, a perfect site for the U.S. Geological Survey National Wetlands Research Center. This location also put the center at the edge of the hurricane impact zones. In the days following the storms, researchers became rescuers and scientists saved lives.
Authors
Gregory J. Smith
Evaluation of emerging contaminants of concern at the South District Wastewater Treatment Plant based on seasonal sampling events, Miami-Dade County, Florida, 2004 Evaluation of emerging contaminants of concern at the South District Wastewater Treatment Plant based on seasonal sampling events, Miami-Dade County, Florida, 2004
The Comprehensive Everglades Restoration Plan has identified highly treated wastewater as a possible water source for the restoration of natural water flows and hydroperiods in selected coastal areas, including the Biscayne Bay coastal wetlands. One potential source of reclaimed wastewater for the Biscayne Bay coastal wetlands is the effluent from the South District Wastewater Treatment...
Authors
Arthur C. Lietz, Michael T. Meyer