Publications
Explore WARC's science publications.
Filter Total Items: 3551
Chronological history of zebra and quagga mussels (Dreissenidae) in North America, 1988-2010 Chronological history of zebra and quagga mussels (Dreissenidae) in North America, 1988-2010
An unprecedented invasion began in North America in the mid-/late-1980s when two Eurasian mussel species, Dreissena polymorpha (zebra mussel) and Dreissena rostriformis bugensis (quagga mussel), became established in Laurentian Great Lakes. It is believed that Lake Erie was the initial location of establishment for both species, and within 3 years, zebra mussels had been found in all the...
Authors
Amy J. Benson
Intra-population variation in activity ranges, diel patterns, movement rates, and habitat use of American alligators in a subtropical estuary Intra-population variation in activity ranges, diel patterns, movement rates, and habitat use of American alligators in a subtropical estuary
Movement and habitat use patterns are fundamental components of the behaviors of mobile animals and help determine the scale and types of interactions they have with their environments. These behaviors are especially important to quantify for top predators because they can have strong effects on lower trophic levels as well as the wider ecosystem. Many studies of top predator movement...
Authors
Adam E. Rosenblatt, Michael R. Heithaus, Frank M Mazzotti, Michael S. Cherkiss, Brian M. Jeffery
Functional diversity supports the physiological tolerance hypothesis for plant species richness along climatic gradients Functional diversity supports the physiological tolerance hypothesis for plant species richness along climatic gradients
1. The physiological tolerance hypothesis proposes that plant species richness is highest in warm and/or wet climates because a wider range of functional strategies can persist under such conditions. Functional diversity metrics, combined with statistical modeling, offer new ways to test whether diversity-environment relationships are consistent with this hypothesis. 2. In a classic...
Authors
Marko J. Spasojevic, James B. Grace, Susan Harrison, Ellen Ingman Damschen
Integrated carbon budget models for the Everglades terrestrial-coastal-oceanic gradient: Current status and needs for inter-site comparisons Integrated carbon budget models for the Everglades terrestrial-coastal-oceanic gradient: Current status and needs for inter-site comparisons
Recent studies suggest that coastal ecosystems can bury significantly more C than tropical forests, indicating that continued coastal development and exposure to sea level rise and storms will have global biogeochemical consequences. The Florida Coastal Everglades Long Term Ecological Research (FCE LTER) site provides an excellent subtropical system for examining carbon (C) balance...
Authors
Tiffany G. Troxler, Evelyn Gaiser, Jordan Barr, Jose D. Fuentes, Rudolf Jaffe, Daniel L. Childers, Ligia Collado-Vides, Victor H. Rivera-Monroy, Edward Castañeda-Moya, William Anderson, Randy Chambers, Meilian Chen, Carlos Coronado-Molina, Stephen E. Davis, Victor C. Engel, Carl Fitz, James Fourqurean, Tom Frankovich, John Kominoski, Chris Madden, Sparkle L. Malone, Steve F. Oberbauer, Paulo Olivas, Jennifer Richards, Colin Saunders, Jessica Schedlbauer, Leonard J. Scinto, Fred Sklar, Thomas J. Smith, Joseph M. Smoak, Gregory Starr, Robert Twilley, Kevin Whelan
Predicting the effects of proposed Mississippi River diversions on oyster habitat quality; application of an oyster habitat suitability index model Predicting the effects of proposed Mississippi River diversions on oyster habitat quality; application of an oyster habitat suitability index model
In an attempt to decelerate the rate of coastal erosion and wetland loss, and protect human communities, the state of Louisiana developed its Comprehensive Master Plan for a Sustainable Coast. The master plan proposes a combination of restoration efforts including shoreline protection, marsh creation, sediment diversions, and ridge, barrier island, and hydrological restoration. Coastal...
Authors
Thomas M. Soniat, Craig P. Conzelmann, Jason D. Byrd, Dustin P. Roszell, Joshua L. Bridevaux, Kevin J. Suir, Susan B. Colley
First evidence of grass carp recruitment in the Great Lakes Basin First evidence of grass carp recruitment in the Great Lakes Basin
We use aging techniques, ploidy analysis, and otolith microchemistry to assess whether four grass carp Ctenopharyngodon idella captured from the Sandusky River, Ohio were the result of natural reproduction within the Lake Erie Basin. All four fish were of age 1 +. Multiple lines of evidence indicate that these fish were not aquaculture-reared and that they were most likely the result of...
Authors
Duane Chapman, J. Jeremiah Davis, Jill A. Jenkins, Patrick M. Kocovsky, Jeffrey G. Miner, John Farver, P. Ryan Jackson
Effects of a non-native cichlid fish (African jewelfish, Hemichromis letourneuxi Sauvage 1880) on a simulated Everglades aquatic community Effects of a non-native cichlid fish (African jewelfish, Hemichromis letourneuxi Sauvage 1880) on a simulated Everglades aquatic community
In an 8-month mesocosm experiment, we examined how a simulated Everglades aquatic community of small native fishes, snails, and shrimp changed with the addition of either a native predator (dollar sunfish Lepomis marginatus) or a non-native predator (African jewelfish Hemichromis letourneuxi) compared to a no-predator control. Two snail species (Planorbella duryi, Physella cubensis) and...
Authors
Pamela J. Schofield, Daniel H. Slone, Denise R. Gregoire, William F. Loftus
Restoration potential of sedge meadows in hand-cultivated soybean fields in northeastern China Restoration potential of sedge meadows in hand-cultivated soybean fields in northeastern China
Sedge meadows can be difficult to restore from farmed fields if key structural dominants are missing from propagule banks. In hand-cultivated soybean fields in northeastern China, we asked if tussock-forming Carex and other wetland species were present as seed or asexual propagules. In the Sanjiang Plain, China, we compared the seed banks, vegetative propagules (below-ground) and...
Authors
Guodong Wang, Beth Middleton, Ming Jiang
Adaptive harvest management for the Svalbard population of pink-footed geese: assessment for the 2013-2015 hunting seasons Adaptive harvest management for the Svalbard population of pink-footed geese: assessment for the 2013-2015 hunting seasons
This report describes progress on the development of an adaptive harvestmanagement strategy for maintaining the Svalbard population of pink-footed geese near their agreed target level (60,000) by providing for sustainable harvests in Norway and Denmark. Specifically, this report provides an optimal harvest quota for the 2013-2015 hunting seasons and describes a process for evaluating...
Authors
Fred A. Johnson, Jesper Madsen
Resilience to stress and disturbance, and resistance to Bromus tectorum L. invasion in cold desert shrublands of western North America Resilience to stress and disturbance, and resistance to Bromus tectorum L. invasion in cold desert shrublands of western North America
Alien grass invasions in arid and semi-arid ecosystems are resulting in grass–fire cycles and ecosystem-level transformations that severely diminish ecosystem services. Our capacity to address the rapid and complex changes occurring in these ecosystems can be enhanced by developing an understanding of the environmental factors and ecosystem attributes that determine resilience of native...
Authors
Jeanne C. Chambers, Bethany A. Bradley, Cynthia S. Brown, Carla D'Antonio, Matthew J. Germino, James B. Grace, Stuart P. Hardegree, Richard F. Miller, David A. Pyke
Nest site selection by diamond-backed terrapins (Malaclemys terrapin) on a Mid-Atlantic Barrier Island Nest site selection by diamond-backed terrapins (Malaclemys terrapin) on a Mid-Atlantic Barrier Island
We scored 48 Malaclemys terrapin nests destroyed by raccoons on Fisherman Island, Virginia, for the presence or absence of tree canopy, shrub canopy, no canopy, bare sand, grass cover, and herbaceous cover. Significantly more nests than expected were found in the open with no vegetation cover and observed distances of predator-destroyed nests from the edge of the nearest habitat island...
Authors
Joseph C. Mitchell, Susan C. Walls
Co-occurrence of invasive Cuban Treefrogs and native treefrogs in PVC pipe refugia Co-occurrence of invasive Cuban Treefrogs and native treefrogs in PVC pipe refugia
The Cuban Treefrog (Osteopilus septentrionalis) was first introduced to Florida at Key West. Since this introduction, Cuban Treefrogs have spread to Miami and are now established throughout most of peninsular Florida. Cuban Treefrogs can become very abundant in areas they colonize. Several reasons contribute to their success, including a generalist diet, high fecundity and the ability to...
Authors
Laura M. Elston, J. Hardin Waddle, Kenneth G. Rice, H. Franklin Percival