Publications
Explore WARC's science publications.
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Southern marl prairies conceptual ecological model Southern marl prairies conceptual ecological model
About 190,000 ha of higher-elevation marl prairies flank either side of Shark River Slough in the southern Everglades. Water levels typically drop below the ground surface each year in this landscape. Consequently, peat soil accretion is inhibited, and substrates consist either of calcitic marl produced by algal periphyton mats or exposed limestone bedrock. The southern marl prairies...
Authors
S.M. Davis, W.F. Loftus, E.E. Gaiser, A.E. Huffman
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
Red Hills salamander. Phaeognathus hubrichti Highton, 1961 Red Hills salamander. Phaeognathus hubrichti Highton, 1961
Abstract not supplied at this time
Authors
C.K. Dodd
Spartina alterniflora genotype influences facilitation and suppression of high marsh species colonizing an early successional salt marsh Spartina alterniflora genotype influences facilitation and suppression of high marsh species colonizing an early successional salt marsh
Genetically based phenotypic and ecotypic variation in a dominant plant species can influence ecological functions and patterns of recruitment by other species in plant communities. However, the nature and degree of importance of genotypic differences is poorly understood in most systems.The dominant salt marsh species, Spartina alterniflora, is known to induce facilitative and...
Authors
C.E. Proffitt, R.L. Chiasson, A.B. Owens, K.R. Edwards, S.E. Travis