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Filter Total Items: 3521

Florida manatees Florida manatees

The endangered Florida manatee (Trichechus manatus latirostris) is a survivor. It is one of only three living species of manatees which, along with their closest living relative, the dugong (Dugong dugon), make up the Order Sirenia. This taxonomic distinctiveness reflects their evolutionary and genetic uniqueness. Sirenians are the only herbivorous marine mammals; manatees feed on...
Authors
Lynn W. Lefebvre, Thomas J. O’Shea

Difference in the crab fauna of mangrove areas at a southwest Florida and a northeast Australia location: Implications for leaf litter processing Difference in the crab fauna of mangrove areas at a southwest Florida and a northeast Australia location: Implications for leaf litter processing

Existing paradigms suggest that mangrove leaf litter is processed primarily via the detrital pathway in forests in the Caribbean biogeographic realm whereas herbivorous crabs are relatively more important litter processors in the Indo-West Pacific. To test this hypothesis, we used pitfall traps to collect intertidal crabs to characterize the crab fauna in a mangrove estuary in southwest...
Authors
C.C. McIvor, T. J. Smith

Gonadal steroidogenesis in-vitro from juvenile alligators obtained from contaminated or control lakes Gonadal steroidogenesis in-vitro from juvenile alligators obtained from contaminated or control lakes

The ubiquitous distribution of many contaminants and the nonlethal, multigenerational effects of such contaminants on reproductive, endocrine, and immune systems have led to concerns that wildlife worldwide are affected. Although the causal agents and effects are known for some species, the underlying physiological mechanisms associated with contaminant-induced reproductive modifications...
Authors
Louis J. Guillette, Timothy S. Gross, D. A. Gross, A. A. Rooney, H. Franklin Percival

Estimating shallow subsidence in microtidal salt marshes of the southeastern United States: Kaye and Barghoorn revisited Estimating shallow subsidence in microtidal salt marshes of the southeastern United States: Kaye and Barghoorn revisited

Simultaneous measurements of vertical accretion and change in surface elevation relative to a shallow (3-5 m) subsurface datum were made in selected coastal salt marshes of Louisiana, Florida, and North Carolina to quantitatively test Kaye and Barghoorn's contention that vertical accretion is not a good surrogate for surface elevation change because of autocompaction of the substrate...
Authors
Donald R. Cahoon, D.J. Reed, J.W. Day

Nonindigenous fish Nonindigenous fish

Abstract not supplied at this time
Authors
C.P. Boydstun, P.L. Fuller, J.D. Williams

Estimation of survival of adult Florida manatees in the Crystal River, at Blue Spring, and on the Atlantic Coast Estimation of survival of adult Florida manatees in the Crystal River, at Blue Spring, and on the Atlantic Coast

We applied Cormack-Jolly-Seber open population models to manatee (Trichechus manatus latirostris) photo-identification databases to estimate adult survival probabilities. The computer programs JOLLY and RECAPCO were used to estimate survival of 677 individuals in three study areas: Crystal River (winters 1977-78 to 1990-91), Blue Spring (winters 1977-78 to 1990-91), and the Atlantic...
Authors
Thomas J. O'Shea, Catherine A. Langtimm
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