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Explore WARC's science publications.

Filter Total Items: 3374

Lower survival probabilities for adult Florida manatees in years with intense coastal storms

The endangered Florida manatee (Trichechus manatus latirostris) inhabits the subtropical waters of the southeastern United States, where hurricanes are a regular occurrence. Using mark-resighting statistical models, we analyzed 19 years of photo-identification data and detected significant annual variation in adult survival for a subpopulation in northwest Florida where human impact is low. That v
Authors
C.A. Langtimm, C.A. Beck

Seasonal movements, migratory behavior, and site fidelity of West Indian manatees along the Atlantic Coast of the United States

Abstract not supplied at this time
Authors
C. J. Deutsch, J. P. Reid, R. K. Bonde, Dean E. Easton, H. I. Kochman, T. J. O'Shea

Modeling manifest variables in longitudinal designs - A two-stage approach

No abstract available
Authors
Bret E. Fuller, Alexander von Eye, P. K. Wood, Bobby D. Keeland

Modeling manatee response to restoration in the Everglades and Ten Thousand Islands

No abstract available.
Authors
Bradley Stith, James P. Reid, Dean E. Easton, Susan M. Butler

Archive of digital boomer seismic reflection data collected during USGS cruises 94GFP01, 95GFP01, 96GFP01, 97GFP01, and 98GFP02 in Lakes Pontchartrain, Borgne, and Maurepas, Louisiana, 1994-1998

The U.S. Geological Survey, in cooperation with the University of New Orleans, the Lake Pontchartrain Basin Foundation, the National Oceanic and Atmospheric Administration, the Coalition to Restore Coastal Louisiana, the U.S. Army Corps of Engineers, the Environmental Protection Agency, and the University of Georgia, conducted five geophysical surveys of Lakes Pontchartrain, Borgne, and Maurepas i
Authors
Karynna Calderon, Shawn V. Dadisman, Jack L. Kindinger, S. Jeffress Williams, James G. Flocks, Shea Penland, Dana S. Wiese

Factors limiting the intertidal distribution of the mangrove species Xylocarpus granatum

The tree species Xylocarpus granatum is commonly described as occurring in the upper intertidal zone of mangrove forests, but mature trees are occasionally found at lower elevations. In the Utwe River basin, on the Pacific island of Kosrae, we investigated the relative importance of several biotic and abiotic factors that may control the intertidal distribution of X. granatum. Factors we evaluated
Authors
J. A. Allen, K. W. Krauss, R.D. Hauff

Mass tree mortality leads to mangrove peat collapse at Bay Islands, Honduras after Hurricane Mitch

We measured sediment elevation and accretion dynamics in mangrove forests on the islands of Guanaja and Roatan, Honduras, impacted by Hurricane Mitch in 1998 to determine if collapse of underlying peat was occurring as a result of mass tree mortality. Little is known about the balance between production and decomposition of soil organic matter in the maintenance of sediment elevation of mangrove f
Authors
Donald R. Cahoon, P. Hensel, J. Rybczyk, K.L. McKee, C.E. Proffitt, B.C. Perez

A pre-vegetated mat technique for the restoration of submersed aquatic vegetation

Communities of submersed aquatic vegetation (SAV) provide critical habitat for wintering waterfowl and many commercially important fish species. Submersed aquatic vegetation also helps minimize storm damage by reducing wave action and stabilizing sediments, and they improve water quality by sequestering nutrients and contaminants (Zieman and Zieman 1989).
Authors
R.G. Boustany

A survey of estuarine submerged aquatic vegetation in the northern Gulf coast

The status of submerged aquatic vegetation along the northern Gulf of Mexico is of concern because of its role in the ecology and economy of the coast. Recent studies by U.S. Geological Survey scientists help assess the factors that contribute to SAV distribution and health.
Authors
J. Carter