Publications
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Filter Total Items: 3386
Hypoxia tolerance of two centrarchid sunfishes and an introduced cichlid from karstic Everglades wetlands of southern Florida, U.S.A.
In this study, the hypoxia tolerance of three Everglades fishes, two native centrarchids (Lepomis gulosus and Lepomis marginatus) and a recently introduced cichlid (Hemichromis letourneuxi), were documented. Aquatic surface respiration (ASR) thresholds were lowest for H. letourneuxi, followed by L. gulosus, then L. marginatus. The ASR thresholds for L. marginatus were within ranges reported for sm
Authors
P. J. Schofield, W.F. Loftus, M.E. Brown
Toxicity of 5% rotenone to nonindigenous Asian swamp eels
Our primary goal was to determine whether rotenone would be a useful control against introduced populations of Asian swamp eels (family Synbranchidae, genus Monopterus). We report the results of a laboratory experiment comparing the efficacy of various rotenone concentrations (1, 2, 4, and 8 mg of 5% liquid rotenone/L of water) in killing nonindigenous swamp eels of various sizes (1-350 g) from th
Authors
P. J. Schofield, L.G. Nico
Testing tail-mounted transmitters with Myocastor coypus (nutria)
We developed a tail-mounted radio-transmitter for Myocastor coypus (nutria) that offers a practical and efficient alternative to collar or implant methods. The mean retention time was 96 d (range 57-147 d, n = 7), making this a practical method for short-term studies. The tail-mounts were less injurious to animals than collars and easier for field researchers to implement than either collars or su
Authors
S. Merino, J. Carter, G. Thibodeaux
Diet induced differences in carbon isotope fractionation between sirenians and terrestrial ungulates
Carbon isotope differences (??13C) between bioapatite and diet, collagen and diet, and bioapatite and collagen were calculated for four species of sirenians, Dugong dugon (Mu??ller), Trichechus manatus (Linnaeus), Trichechus inunguis (Natterer), and the extinct Hydrodamalis gigas (Zimmerman). Bone and tooth samples were taken from archived materials collected from populations during the mid eighte
Authors
M.T. Clementz, P.L. Koch, C.A. Beck
Research on the impacts of past and future hurricanes on the endangered Florida manatee
U.S. Geological Survey (USGS) research on Florida manatees (Trichechus manatus latirostris) from 1982 through 1998 identified lower apparent survival rates for adult manatees during years when Hurricane Elena (1985), the March "Storm of the Century"(1993), and Hurricane Opal (1995) hit the northern coast of the Gulf of Mexico. Although our analysis showed that a significant number of our monitored
Authors
Catherine A. Langtimm, M. Dennis Krohn, Bradley Stith, James P. Reid, C.A. Beck, Susan M. Butler
Bacteriological water quality in and around Lake Pontchartrain following Hurricanes Katrina and Rita
Following the Louisiana landfalls of Katrina on August 29 and Rita on September 24, 2005, the local population and the American public were concerned about the effects the hurricanes might have on water quality in Lake Pontchartrain. The lake is a major recreational resource for the region and an important fishery. Contamination carried by the storm surge—along with runoff and water pumped from fl
Authors
Dennis K. Demcheck, Donald M. Stoeckel, Rebecca N. Bushon, David S. Blehert, Daniel J. Hippe
Movements of large snakes (Drymarchon, Masticophis) in north-central Florida
Abstract not supplied at this time
Authors
C.K. Dodd, W.J. Barichivich
Right whale mortality: a message from the dead to the living
Abstract not supplied at this time
Authors
M.J. Moore, W.A. McLellan, P.-Y. Daoust, R. K. Bonde, A.R. Knowlton
Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative
Executive Summary
Understanding the factors affecting migratory bird and bat populations during all three phases of their life cycle—breeding, nonbreeding, and migration—is critical to species conservation planning. This includes the need for information about these species’ responses to natural challenges, as well as information about the effects of human activities and structures. Habitats and o
Authors
Janet M. Ruth, Albert Manville, Ron Larkin, Wylie C. Barrow, Lori Johnson-Randall, Deanna K. Dawson, Robert H. Diehl, Yufang Wang, Richard S. Sojda, Rafal Angryk, Robert W. Klaver, Reggie Mead, John Paxton, Patricia J. Heglund, Eileen Kirsch, Manuel J. Suarez, Larry Robinson, Sidney A. Gauthreaux, Carroll G. Belser, Steven J. Franke, Bruno Bruderer, Jeffrey J. Buler, Frank R. Moore, David S. Mizrahi, Robert Fogg, T. Adam Kelly, Paul M. Cryan, Tim Crum, Terry J. Schuur, Dave Krueper, Robb Diehl, Tom Will
Herpetofaunal Inventories of the National Parks of South Florida and the Caribbean: Volume IV. Biscayne National Park
Amphibian declines and extinctions have been documented around the world, often in protected natural areas. Concern for this alarming trend has prompted the U.S. Geological Survey and the National Park Service to document all species of amphibians that occur within U.S. National Parks and to search for any signs that amphibians may be declining. This study, an inventory of amphibian species in Bis
Authors
Kenneth G. Rice, J. Hardin Waddle, Marquette E. Crockett, Christopher D. Bugbee, Brian M. Jeffery, H. Franklin Percival
Welcome to the National Wetlands Research Center Library: Successful Research Begins @ Your Library
The National Wetlands Research Center (NWRC) library is part of the U.S. Geological Survey (USGS) and is the only USGS library dedicated to wetland science. The mission of the NWRC library is to support the research and information needs of scientists, managers, and support personnel by providing a specialized, scientific collection of library materials and related information services that are re
Authors
Linda Broussard
Welcome to the National Wetlands Research Center Library: Not Just Another Library-A Special Library
Libraries are grouped into four major types: public, school, academic, and special. The U.S. Geological Survey's (USGS) National Wetlands Research Center (NWRC) library is classified as a special library because it is sponsored by the Federal government, and the collections focus on a specific subject. The NWRC library is the only USGS library dedicated to wetland science. Library personnel offer
Authors
Linda Broussard