Publications
Explore WARC's science publications.
Filter Total Items: 3543
Water dispersal of vegetative bulbils of the invasive exotic Dioscorea oppositifolia L. in southern Illinois Water dispersal of vegetative bulbils of the invasive exotic Dioscorea oppositifolia L. in southern Illinois
Riparian corridors promote dispersal of several species of exotic invasives worldwide. Dispersal plays a role in the colonization of exotic invasive species into new areas and this study was conducted to determine if the invasiveness of Dioscorea oppositifolia L. (Chinese yam) is facilitated by secondary dispersal of vegetative diaspores (bulbils) by water. Since seed production of this...
Authors
J.R. Thomas, D.J. Gibson, B.A. Middleton
High resolution mapping and classification of oyster habitats in nearshore Louisiana using sidescan sonar High resolution mapping and classification of oyster habitats in nearshore Louisiana using sidescan sonar
Sidescan sonar holds great promise as a tool to quantitatively depict the distribution and extent of benthic habitats in Louisiana's turbid estuaries. In this study, we describe an effective protocol for acoustic sampling in this environment. We also compared three methods of classification in detail: mean-based thresholding, supervised, and unsupervised techniques to classify sidescan...
Authors
Y.C. Allen, C.A. Wilson, H.H. Roberts, J. Supan
Reproduction and mating behavior of the atlantic flyingfish, Cheilopogon melanurus (Exocoetidae), off North Carolina Reproduction and mating behavior of the atlantic flyingfish, Cheilopogon melanurus (Exocoetidae), off North Carolina
The reproductive biology of Cheilopogon melanurus (Valenciennes, 1847) was examined off North Carolina during the summers of 1991–1992 and 1999–2003. Specimens were collected using a small mesh neuston net and dip nets. A spawning event, the first observation of mating behavior for this species, was recorded off Cape Fear, North Carolina, on 19 August 2003. It was considered to be a...
Authors
Tara L. Casazza, Steve W. Ross, Ann Marie Necaise, Kenneth J. Sulak
Improving removal-based estimates of abundance by sampling a population of spatially distinct subpopulations Improving removal-based estimates of abundance by sampling a population of spatially distinct subpopulations
A statistical modeling framework is described for estimating the abundances of spatially distinct subpopulations of animals surveyed using removal sampling. To illustrate this framework, hierarchical models are developed using the Poisson and negative-binomial distributions to model variation in abundance among subpopulations and using the beta distribution to model variation in capture
Authors
R.M. Dorazio, H.L. Jelks, F. Jordan
Mismatch between herbivore behavior and demographics contributes to scale-dependence of host susceptibility in two pine species Mismatch between herbivore behavior and demographics contributes to scale-dependence of host susceptibility in two pine species
The impacts on forests of tree-killing bark beetles can depend on the species composition of potential host trees. Host susceptibility might be an intrinsic property of tree species, or it might depend on spatial patterning of alternative host species. We compared the susceptibility of loblolly pine (Pinus taeda) and Virginia pine (P. virginiana) to southern pine beetle (Dendroctonus...
Authors
T. Ylioja, D. H. Slone, M.P. Ayres
Developmental biology and ecology of the Kemp's ridley sea turtle. Lepidochelys kempii, in the eastern Gulf of Mexico Developmental biology and ecology of the Kemp's ridley sea turtle. Lepidochelys kempii, in the eastern Gulf of Mexico
Abstract not supplied at this time
Authors
J.R. Schmid, W.J. Barichivich
Primary production in an impounded baldcypress swamp (Taxodium distichum) at the northern limit of the range Primary production in an impounded baldcypress swamp (Taxodium distichum) at the northern limit of the range
The ability of baldcypress (Taxodium distichum)swamps to maintain themselves near the northern limit of their range depends on their levels of production, which is not only are response to climate but also to local environmental factors(e.g., impoundment). We asked if primary production was reduced under impounded conditions and if species' responses to impoundment were individualistic...
Authors
B.A. Middleton, K.L. McKee
Species frequency dynamics in an old-field succession: Effects of disturbance, fertilization and scale Species frequency dynamics in an old-field succession: Effects of disturbance, fertilization and scale
Question:
Authors
David J. Gibson, Beth A. Middleton, K. Foster, Y. A. K. Honu, E. W. Hoyer, M. Mathis
[Book Review] The Musk Turtle Book by John Iverson with a Section on Husbandry, by Richard Cary Paull [Book Review] The Musk Turtle Book by John Iverson with a Section on Husbandry, by Richard Cary Paull
Review of: The Musk Turtle Book. John Iverson: Volume I of Turtles of the Worlds. Green Nature Books, 2003. ISBN: 188808958X.
Authors
C.K. Dodd
The conservation of box turtles on public lands in Florida The conservation of box turtles on public lands in Florida
Abstract not supplied at this time
Authors
C.K. Dodd, Marian L. Griffey
Effects of season and marsh management on submerged aquatic vegetation in coastal Louisiana brackish marsh ponds Effects of season and marsh management on submerged aquatic vegetation in coastal Louisiana brackish marsh ponds
No abstract available.
Authors
J.H. Merino, J.A. Nyman, T. Michot
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