Publications
Explore WARC's science publications.
Filter Total Items: 3509
Ecology of coral reefs in the US Virgin Islands Ecology of coral reefs in the US Virgin Islands
The US Virgin Islands (USVI ) in the northeastern Caribbean, consist of St. Croix (207 km2), St. Thomas (83 km2), St. John (52 km2) and numerous smaller islands (Dammann and Nellis 1992). They are part of the Lesser Antilles and Leeward Islands on the eastern boundary of the Caribbean plate (Fig. 8.1). An extensive platform underlies St. Thomas and St. John and connects these islands to...
Authors
Caroline S. Rogers, Jeff Miller, Erinn Muller, Peter J Edmunds, Richard S. Nemeth, James P. Beets, Alan M. Friedlander, Tyler B. Smith, Rafe Boulon, Christopher F.G. Jeffrey, Charles Menza, Chris Caldow, Nasseer Idrisi, Barbara Kojis, Mark E. Monaco, Anthony S. Spitzack, Elizabeth H. Gladfelter, John C. Ogden, Zandy M Hillis-Star, Ian Lundgren, William B. Schill, Ilsa B. Kuffner, Laurie L. Richardson, Barry E. Devine, Joshua D. Voss
A simulation model for projecting changes in salinity concentrations and species dominance in the coastal margin habitats of the Everglades A simulation model for projecting changes in salinity concentrations and species dominance in the coastal margin habitats of the Everglades
Sharp boundaries typically separate the salinity tolerant mangroves from the salinity intolerant hardwood hammock species, which occupy the similar geographical areas of southern Florida. Evidence of strong feedback between tree community-type and the salinity of the unsaturated (vadose) zone of the soil suggests that a severe disturbance that significantly tilts the salinity in the...
Authors
S.Y. Teh, D.L. DeAngelis, L.D.S.L. Sternberg, F. R. Miralles-Wilhelm, T.J. Smith, H. L. Koh
Emergence of functional responses from interactions of individuals Emergence of functional responses from interactions of individuals
No abstract available.
Authors
Donald L. DeAngelis, Shu Ju, J. Nathaniel Holland
Fire and nonnative invasive plants in the central bioregion Fire and nonnative invasive plants in the central bioregion
The Central bioregion is a vast area, stretching from Canada to Mexico and from the eastern forests to the Rocky Mountains, dominated by grasslands and shrublands, but inclusive of riparian and other forests. This bioregion has been impacted by many human induced changes, particularly relating to agricultural practices, over the past 150 years. Also changed are fire regimes, first by...
Authors
James B. Grace, Kristin Zouhar
Biogeochemical response of organic-rich freshwater marshes in the Louisiana delta plain to chronic river water influx Biogeochemical response of organic-rich freshwater marshes in the Louisiana delta plain to chronic river water influx
To help evaluate effects of Mississippi River inputs to sustainability of coastal Louisiana ecosystems, we compared porewater and substrate quality of organic-rich Panicum hemitomon freshwater marshes inundated by river water annually for more than 30 years (Penchant basin, PB) or not during the same time (Barataria basin, BB). In the marshes receiving river water the soil environment...
Authors
C.M. Swarzenski, T.W. Doyle, B. Fry, T.G. Hargis
A Key to the Pupal Exuviae of the Midges (Diptera: Chironomidae) of Everglades National Park, Florida A Key to the Pupal Exuviae of the Midges (Diptera: Chironomidae) of Everglades National Park, Florida
A key has been developed for identifying the pupal exuviae of 132 taxa of chironomid midges collected in Everglades National Park, as well as 18 additional species from freshwater habitats adjacent to the Park. Descriptions and illustrations are based upon voucher specimens from extensive collections of chironomid pupal exuviae for faunal surveys and biomonitoring research conducted in...
Authors
Robert E. Jacobsen
Representing general theoretical concepts in structural equation models: The role of composite variables Representing general theoretical concepts in structural equation models: The role of composite variables
Structural equation modeling (SEM) holds the promise of providing natural scientists the capacity to evaluate complex multivariate hypotheses about ecological systems. Building on its predecessors, path analysis and factor analysis, SEM allows for the incorporation of both observed and unobserved (latent) variables into theoretically-based probabilistic models. In this paper we discuss...
Authors
J.B. Grace, K.A. Bollen
Effect of hydrological conditions on nitrous oxide, methane, and carbon dioxide dynamics in a bottomland hardwood forest and its implication for soil carbon sequestration Effect of hydrological conditions on nitrous oxide, methane, and carbon dioxide dynamics in a bottomland hardwood forest and its implication for soil carbon sequestration
This study was conducted at three locations in a bottomland hardwood forest with a distinct elevation and hydrological gradient: ridge (high, dry), transition, and swamp (low, wet). At each location, concentrations of soil greenhouse gases (N2O, CH4, and CO2), their fluxes to the atmosphere, and soil redox potential (Eh) were measured bimonthly, while the water table was monitored every...
Authors
K. Yu, S.P. Faulkner, M.J. Baldwin
Cloned embryos from semen. Part 2: Intergeneric nuclear transfer of semen-derived eland (Taurotragus oryx) epithelial cells into bovine oocytes Cloned embryos from semen. Part 2: Intergeneric nuclear transfer of semen-derived eland (Taurotragus oryx) epithelial cells into bovine oocytes
The production of cloned offspring by nuclear transfer (NT) of semen-derived somatic cells holds considerable potential for the incorporation of novel genes into endangered species populations. Because oocytes from endangered species are scarce, domestic species oocytes are often used as cytoplasts for interspecies NT. In the present study, epithelial cells isolated from eland semen were...
Authors
L. Nel-Themaat, M.C. Gomez, C.E. Pope, M. Lopez, G. Wirtu, J.A. Jenkins, A. Cole, B.L. Dresser, K.R. Bondioli, R.A. Godke
Desert bird associations with broad-scale boundary length: Applications in avian conservation Desert bird associations with broad-scale boundary length: Applications in avian conservation
1. Current understanding regarding the effects of boundaries on bird communities has originated largely from studies of forest-non-forest boundaries in mesic systems. To assess whether broad-scale boundary length can affect bird community structure in deserts, and to identify patterns and predictors of species' associations useful in avian conservation, we studied relations between birds...
Authors
K.J. Gutzwiller, W.C. Barrow
Gulf Sturgeon Facts Gulf Sturgeon Facts
Sturgeon: An ancient type of fish, with 5 rows of armor scutes, a cartilaginous skeleton, long snout, suction mouth, no teeth, and 4 barbels. Photograph of a Gulf sturgeon. The total length of a 5-month old is 313 mm.
Authors
Kenneth J. Sulak, Michael T. Randall
Conservation status of imperiled north American freshwater and diadromous fishes Conservation status of imperiled north American freshwater and diadromous fishes
This is the third compilation of imperiled (i.e., endangered, threatened, vulnerable) plus extinct freshwater and diadromous fishes of North America prepared by the American Fisheries Society's Endangered Species Committee. Since the last revision in 1989, imperilment of inland fishes has increased substantially. This list includes 700 extant taxa representing 133 genera and 36 families...
Authors
H.L. Jelks, S. J. Walsh, N.M. Burkhead, Salvador Contreras-Balderas, E. Diaz-Pardo, D.A. Hendrickson, J. Lyons, N.E. Mandrak, F. McCormick, Joseph S. Nelson, Steven P. Platania, B.A. Porter, C.B. Renaud, J. J. Schmitter-Soto, E.B. Taylor, M.L. Warren