Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 9974
Use of terrestrial habitats by amphibians in the sandhill uplands of north-central Florida
Abstract not supplied at this time
Authors
C. K. Dodd
Environmental gradients and identification of wetlands in north-central Florida
Vegetation composition, soil morphology, and hydrology were characterized along wetland-to-upland gradients at six forested sites in north-central Florida to compare results of Federal wetland delineation methods with 3–5 yr of hydrologic data. Wetland and non-wetland identifications were supported by hydrology data in eight of nine plant communities. Lack of hydric soil indicators and hydrophytic
Authors
M.M. Davis, S.W. Sprecher, J.S. Wakeley, G.R. Best
Toxicity of inorganic contaminants, individually and in environmental mixtures, to three endangered fishes (Colorado squawfish, bonytail, and razorback sucker)
Two life stages of three federally-listed endangered fishes, Colorado squawfish (Ptychocheilus lucius), bonytail (Gila elegans), and razorback sucker (Xyrauchen texanus) were exposed to copper, selenate, selenite, and zinc individually, and to mixtures of nine inorganics in a reconstituted water that simulated the water quality of the middle Green River, Utah. The mixtures simulated environmental
Authors
Kevin J. Buhl, S. J. Hamilton
Use of behavioral avoidance testing in natural resource damage assessment
Natural Resource Damage Assessment (NRDA) provisions established under federal and state statutes enable natural resource trustees to recover compensation from responsible parties to restore injured natural resources. Behavioral avoidance testing with fish has been used in NRDAs to determine injuries to natural resources and to establish restoration thresholds. In this manuscript we evaluate the u
Authors
J. Lipton, E. E. Little, J.C.A. Marr, A. J. DeLonay
Use of the semipermeable membrane device (SPMD) to sample polycyclic aromatic hydrocarbon pollution in a lotic system
Relative concentrations of aqueous polycyclic aromatic hydrocarbons (PAH) were investigated in an urban creek. Samples were obtained at five sites within a 600-m segment of the creek that is critical habitat for an endangered species of fish. the sampling technique entailed immersion of semipermeable membrane devices (SPMDs) in the water for intervals as long as 64 d. SPMDs are passive, in situ, m
Authors
Jon A. Lebo, James L. Zajicek, Carl E. Orazio, Jimmie D. Petty, James Huckins, Ernest H. Douglas
Toxicity of fire retardant chemicals to aquatic organisms: Progress report
Fire retardants and suppressants used extensively in North America are often applied in environmentally sensitive areas that may contain endangered, threatened, or economically important plant and animal species. We conducted laboratory acute toxicity tests in both hard and soft waters with five commonly used fire control chemicals (Fire Trol LCG-R, Fire-Trol GTS-R, Phos-Chek D-75-F, Phos-Chek WD
Authors
Steven J. Hamilton, Susan F. McDonald, Mark P. Gaikowski, Kevin J. Buhl
Test system for exposing fish to resuspended, contaminated sediment
We describe a new test system for exposing fish to resuspended sediments and associated contaminants. Test sediments were resuspended by revolving test chambers on rotating shafts driven by an electric motor. The timing, speed, and duration of test-chamber revolution were controlled by a rheostat and electronic timer. Each chamber held 45 litres of water and accommodated about 49 g of test fish. T
Authors
W.G. Cope, J.G. Wiener, M.T. Steingraeber
Waterfowl habitat management in the Mississippi Alluvial Valley
No abstract available.
Authors
K. J. Reinecke, C.K. Baxter
Breeding bird census: Planted cottonwood forest -outside levee
No abstract available.
Authors
Daniel J. Twedt
Breeding bird census: Planted cottonwood forest -inside levee
No abstract available.
Authors
Daniel J. Twedt
Breeding bird census: Coppiced cottonwood forest I & II
No abstract available.
Authors
Daniel J. Twedt
Breeding bird census: Bottomland hardwood forest I-IV
No abstract available.
Authors
Daniel J. Twedt