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Filter Total Items: 3345

Environmental contaminants in redheads wintering in coastal Louisiana and Texas

Whole body and liver analyses indicated that wintering redheads (Aythya americana; n = 70) in coastal Louisiana (one site) and Texas (two sites) were relatively free of contamination with common trace elements, organochlorines, and hydrocarbons. Most trace elements, including As, Cr, Hg, Mg, Mn, Ni, Pb, Se, Sr, and Zn, were within background concentrations in livers; levels of B, Cd, Cu, and Fe
Authors
T.C. Michot, T. W. Custer, A.J. Nault, C. A. Mitchell

Prospects for improving the salt tolerance of forest trees: A review

Three major themes related to the improvement of salt tolerance in forest tree species are examined. First, evidence demonstrating that substantial intraspecific variation in salt tolerance exists in many species is presented. This evidence is important because it suggests that efforts to improve salt tolerance through conventional plant breeding techniques are justified. Second, the physiological
Authors
J. A. Allen, J. L. Chambers, M. Stine

Portable platforms for setting rocket nets in open-water areas

Portable platforms for setting rocket nets in open-water habitats were developed and used to capture 1116 waterfowl of seven species during September and October 1991 and 1992 in southwestern Louisiana. Incidence of mortality (1% of captured birds) and escape (3% of captured birds) was low. Rocket-netting from platforms was a reliable and efficient technique for capturing waterfowl, and should be
Authors
R. R. Cox, A. D. Afton

Recent accretion in two managed marsh impoundments in coastal Louisiana

Recent accretion was measured by the feldspar marker horizon method in two gravity-drained, managed, marsh impoundments and unmanaged reference marshes located on the rapidly subsiding coast of Louisiana. Water level management was designed to limit hydrologic exchange to the managed marsh by regulating the direction and rate of water flows. During a drawdown-flooding water management cycle, the u
Authors
Donald R. Cahoon

Sirenian status and conservation efforts

Abstract not supplied at this time
Authors
H. Marsh, L.W. Lefebvre

Contaminant induced reproductive anomalies in Florida alligators

Abstract not supplied at this time
Authors
T. S. Gross, L. J. Guillette, H.F. Percival, G.R. Mason, J.M. Matter, A.R. Woodward