Skip to main content
U.S. flag

An official website of the United States government

Publications

Explore WARC's science publications.

Filter Total Items: 3532

Prey vulnerability to peacock cichlids and largemouth bass based on predator gape and prey body depth Prey vulnerability to peacock cichlids and largemouth bass based on predator gape and prey body depth

The interaction of prey fish body depth and predator gape size may produce prey assemblages dominated by invulnerable prey and excessive prey-to-predator biomass ratios. Peacock cichlids (Cichla ocellaris) were stocked into southeast Florida canals to consume excess prey fish biomass, particularly spotted tilapia (Tilapia mariae). The ecomorphologically similar largemouth bass...
Authors
Jeffrey E. Hill, Leo G. Nico, Charles E. Cichra, Carter R. Gilbert

Inducible defenses in food webs: Chapter 3.4 Inducible defenses in food webs: Chapter 3.4

This chapter reviews the predicted effects of induced defenses on trophic structure and two aspects of stability, “local” stability and persistence, as well as presenting novel results on a third, resilience. Food webs are structures of populations in a given location organized according to their predator–prey interactions. Interaction strengths and, therefore, prey defenses are...
Authors
Matthijs Vos, Bob W. Kooi, Donald L. DeAngelis, Wolf M. Mooij

Seed storage conditions change the germination pattern of clonal growth plants in Mediterranean salt marshes Seed storage conditions change the germination pattern of clonal growth plants in Mediterranean salt marshes

The effect of salinity level and extended exposure to different salinity and flooding conditions on germination patterns of three salt‐marsh clonal growth plants (Juncus subulatus, Scirpus litoralis, and S. maritimus) was studied. Seed exposure to extended flooding and saline conditions significantly affected the outcome of the germination process in a different, though predictable, way...
Authors
J. L. Espinar, L. V. Garcia, L. Clemente

Manatee occurrence in the northern Gulf of Mexico, west of Florida Manatee occurrence in the northern Gulf of Mexico, west of Florida

Reports of West Indian manatees (Trichechus manatus) in the US Gulf of Mexico west of Florida have increased during the last decade. We reviewed all available manatee sighting, capture, and carcass records (n = 377) from Alabama, Louisiana, Mississippi, and Texas since the early 1900s; only 40 of these were previously published. Manatees were reported most often in estuarine habitats...
Authors
D. Fertl, A. J. Schiro, G. T. Regan, Cathy A. Beck, N. Adimey, L. Price-May, A. Amos, Graham A.J. Worthy, R. Crossland

Genetic effects of a large-scale Spartina alterniflora (smooth cordgrass) dieback and recovery in the northern Gulf of Mexico Genetic effects of a large-scale Spartina alterniflora (smooth cordgrass) dieback and recovery in the northern Gulf of Mexico

A large-scale dieback event struck marshes along the northwestern Gulf of Mexico coast during summer 2000, in apparent response to a prolonged and severe drought. Along the Louisiana coast, large areas of the dominant marsh species, Spartina alterniflora, turned brown, followed by death of at least the aboveground structures of entire plant mortality. Key ecological and genetic measures...
Authors
K.R. Edwards, S.E. Travis, C.E. Proffitt

Life history trade-offs and community dynamics of small fishes in a seasonally pulsed wetland Life history trade-offs and community dynamics of small fishes in a seasonally pulsed wetland

We used a one-dimensional, spatially explicit model to simulate the community of small fishes in the freshwater wetlands of southern Florida, USA. The seasonality of rainfall in these wetlands causes annual fluctuations in the amount of flooded area. We modeled fish populations that differed from each other only in efficiency of resource utilization and dispersal ability. The simulations...
Authors
D.L. DeAngelis, J.C. Trexler, W.F. Loftus

Amphibian Research and Monitoring Initiative (ARMI): A successful start to a national program in the United States Amphibian Research and Monitoring Initiative (ARMI): A successful start to a national program in the United States

Most research to assess amphibian declines has focused on local-scale projects on one or a few species. The Amphibian Research and Monitoring Initiative (ARMI) is a national program in the United States mandated by congressional directive and implemented by the U.S. Department of the Interior (specifically the U.S. Geological Survey, USGS). Program goals are to monitor changes in...
Authors
Erin Muths, Robin E. Jung, Larissa L. Bailey, M. J. Adams, P. Stephen Corn, C. Kenneth Dodd, Gary M. Fellers, Walter J. Sadinski, Cecil R. Schwalbe, Susan C. Walls, Robert N. Fisher, Alisa L. Gallant, William A. Battaglin, D. Earl Green

Back to the basics: Birmingham, Alabama, measurement and scale Back to the basics: Birmingham, Alabama, measurement and scale

Back to the Basics: Birmingham, Alabama is the fourth in a series of workshops that focus on teaching foundational map reading and spatial differentiation skills. It is the second published exercise from the Back to the Basics series developed by the Wetland Education through Maps and Aerial Photography (WETMAAP) Program (see Journal of Geography 103, 5: 226-230). Like its predecessor...
Authors
Lawrence R. Handley, Catherine M. Lockwood, Nathan Handley
Was this page helpful?