Publications
Explore WARC's science publications.
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Oil detection in a coastal marsh with polarimetric Synthetic Aperture Radar (SAR) Oil detection in a coastal marsh with polarimetric Synthetic Aperture Radar (SAR)
The National Aeronautics and Space Administration's airborne Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) was deployed in June 2010 in response to the Deepwater Horizon oil spill in the Gulf of Mexico. UAVSAR is a fully polarimetric L-band Synthetic Aperture Radar (SAR) sensor for obtaining data at high spatial resolutions. Starting a month prior to the UAVSAR collections...
Authors
Elijah W. Ramsey, Amina Rangoonwala, Yukihiro Suzuoki, Cathleen E. Jones
Sea-level rise and landscape change influence mangrove encroachment onto marsh in the Ten Thousand Islands region of Florida, USA Sea-level rise and landscape change influence mangrove encroachment onto marsh in the Ten Thousand Islands region of Florida, USA
The Ten Thousand Islands region of southwestern Florida, USA is a major feeding and resting destination for breeding, migrating, and wintering birds. Many species of waterbirds rely specifically on marshes as foraging habitat, making mangrove encroachment a concern for wildlife managers. With the alteration of freshwater flow and sea-level rise trends for the region, mangroves have...
Authors
Ken W. Krauss, Andrew S. From, Thomas W. Doyle, Terry J. Doyle, Michael J. Barry
Salinity tolerance of non-native suckermouth armoured catfish (Loricariidae: Pterygoplichthys) in south-eastern Mexico: Implications for invasion and dispersal Salinity tolerance of non-native suckermouth armoured catfish (Loricariidae: Pterygoplichthys) in south-eastern Mexico: Implications for invasion and dispersal
1. Salinity tolerance is one of several important physiological attributes that determine invasion success and the pattern of dispersal of introduced aquatic organisms. Introduced freshwater fishes able to tolerate elevated salinities have the potential to invade and exploit brackish-water (mixohaline) environments and use estuaries and coastal waters as 'bridges' for dispersing from one...
Authors
Krista A. Capps, Leo G. Nico, Manuel Mendoza-Carranza, Wendi Arevalo-Frias, Andrew J. Ropicki, Sebastian A. Heilpern, Rocio Rodiles-Hernandez
Data from in situ Observations of Fish Traps Set by Fishermen in St. John Waters, U.S. Virgin Islands, 1992-94 Data from in situ Observations of Fish Traps Set by Fishermen in St. John Waters, U.S. Virgin Islands, 1992-94
In order to estimate (1) the trapping pressure within Virgin Islands National Park (VINP) waters, (2) the effect of fish traps on park marine resources (both fishes and habitats), and (3) the effectiveness of park regulations in protecting marine resources, traps set by fishers were visually observed and contents censused in situ in 1992, 1993, and 1994, around St. John (U.S. Virgin...
Authors
Virginia H. Garrison, Jim Beets, Alan M. Friedlander, Steven Canty
Productivity is a poor predictor of plant species richness Productivity is a poor predictor of plant species richness
For more than 30 years, the relationship between net primary productivity and species richness has generated intense debate in ecology about the processes regulating local diversity. The original view, which is still widely accepted, holds that the relationship is hump-shaped, with richness first rising and then declining with increasing productivity. Although recent meta-analyses...
Authors
Peter B. Adler, Eric W. Seabloom, Elizabeth T. Borer, Helmut Hillebrand, Yann Hautier, Andy Hector, W. Stanley Harpole, Lydia R. O’Halloran, James B. Grace, T. Michael Anderson, Jonathan D. Bakker, Lori A. Biederman, Cynthia S. Brown, Yvonne M. Buckley, Laura B. Calabrese, Cheng-Jin Chu, Elsa E. Cleland, Scott L. Collins, Kathryn L. Cottingham, Michael J. Crawley, Ellen Ingman Damschen, Kendi F. Davies, Nicole M. DeCrappeo, Philip A. Fay, Jennifer Firn, Paul Frater, Eve I. Gasarch, Daneil S. Gruner, Nicole Hagenah, Janneke Hille Ris Lambers, Hope Humphries, Virginia L. Jin, Adam D. Kay, Kevin P. Kirkman, Julia A. Klein, Johannes M.H. Knops, Kimberly J. La Pierre, John G. Lambrinos, Wei Li, Andrew S. MacDougall, Rebecca L. McCulley, Brett A. Melbourne, Charles E. Mitchell, Joslin L. Moore, John W. Morgan, Brent Mortensen, John L. Orrock, Suzanne M. Prober, David A. Pyke, Anita C. Risch, Martin Schuetz, Melinda D. Smith, Carly J. Stevens, Lauren L. Sullivan, Gang Wang, Peter D. Wragg, Justin P. Wright, Louie H. Yang
Are all intertidal wetlands naturally created equal? Bottlenecks, thresholds and knowledge gaps to mangrove and saltmarsh ecosystems Are all intertidal wetlands naturally created equal? Bottlenecks, thresholds and knowledge gaps to mangrove and saltmarsh ecosystems
Intertidal wetlands such as saltmarshes and mangroves provide numerous important ecological functions, though they are in rapid and global decline. To better conserve and restore these wetland ecosystems, we need an understanding of the fundamental natural bottlenecks and thresholds to their establishment and long-term ecological maintenance. Despite inhabiting similar intertidal...
Authors
Daniel A. Friess, Ken W. Krauss, Erik M. Horstman, Thorsten Balke, Tjeerd J. Bouma, Demis Galli, Edward L. Webb
Monitoring coastal inundation with Synthetic Aperture Radar satellite data Monitoring coastal inundation with Synthetic Aperture Radar satellite data
Maps representing the presence and absence of surface inundation in the Louisiana coastal zone were created from available satellite scenes acquired by the Japanese Aerospace Exploration Agency's Advanced Land Observing Satellite and by the European Space Agency's Envisat from late 2006 through summer 2009. Detection of aboveground surface flooding relied on the well-documented and...
Authors
Yukihiro Suzuoki, Amina Rangoonwala, Elijah W. Ramsey
No evidence of interference competition among the invasive feral pig and two native peccary species in a Neotropical wetland No evidence of interference competition among the invasive feral pig and two native peccary species in a Neotropical wetland
In South America, the invasive feral pig (Sus scrofa Linnaeus) has become established in Argentina, Uruguay, Paraguay and in a wide range within Brazil, along the southern half of the Atlantic Forest, in the cerrado (savanna) and in the Pantanal wetland. The geographical ranges of the two most common South American native peccary (Tayassu pecari Link and Pecari tajacu Linnaeus) overlap...
Authors
Luiz G. R. Oliveira-Santos, Robert M. Dorazio, Walfrido M. Tomas, Guilherme Mourao, Fernando A.S. Fernandez
Population genetic structure and conservation genetics of threatened Okaloosa darters (Etheostoma okaloosae) Population genetic structure and conservation genetics of threatened Okaloosa darters (Etheostoma okaloosae)
Imperiled Okaloosa darters (Etheostoma okaloosae) are small, benthic fish limited to six streams that flow into three bayous of Choctawhatchee Bay in northwest Florida, USA. We analyzed the complete mitochondrial cytochrome b gene and 10 nuclear microsatellite loci for 255 and 273 Okaloosa darters, respectively. Bayesian clustering analyses and AMOVA reflect congruent population genetic...
Authors
James D. Austin, Howard L. Jelks, Bill Tate, Aria R. Johnson, Frank Jordan
Potential use of weather radar to study movements of wintering waterfowl Potential use of weather radar to study movements of wintering waterfowl
To protect and restore wintering waterfowl habitat, managers require knowledge of routine wintering waterfowl movements and habitat use. During preliminary screening of Doppler weather radar data we observed biological movements consistent with routine foraging flights of wintering waterfowl known to occur near Lacassine National Wildlife Refuge (NWR), Louisiana. During the winters of...
Authors
Lori A. Randall, Robert H. Diehl, Barry C. Wilson, Wylie C. Barrow, Clinton W. Jeske
Changes in diameter growth of Taxodium distichum in response to flow alterations in the Savannah River Changes in diameter growth of Taxodium distichum in response to flow alterations in the Savannah River
Efforts to maximize or restore ecological function on floodplains impacted by dam construction have increasingly focused on river flow management. Few studies, however, consider floodplain hydrogeomorphic position and annual climatic variation in dam impact assessment. The Savannah River, a large river ecosystem in the Southeastern United States, was impounded in the 1950's. Our study...
Authors
M Palta, Thomas W. Doyle, C. Rhett Jackson, L Judy Meyer, R Sharitz
Joint Ecosystem Modeling (JEM) ecological model documentation volume 2: roseate spoonbill (Platalea ajaja) landscape habitat suitability index v1.0.0 Joint Ecosystem Modeling (JEM) ecological model documentation volume 2: roseate spoonbill (Platalea ajaja) landscape habitat suitability index v1.0.0
Ecological conditions in the Greater Everglades have changed due to human activities, including the construction of canals to divert water away from the core of the landscape. Current and planned restoration projects are designed to produce a natural sheetflow of water across the landscape. This restoration of water flow should provide an increase in freshwater needed to restore natural...
Authors
Stephanie S. Romañach, Craig Conzelmann, Adam Daugherty, Jerome J. Lorenz, Christina Hunnicutt, Frank J. Mazzotti