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Filter Total Items: 3374

Southern region: Forest research reort

No abstract available.
Authors
Virginia Burkett, Scott Beasley, Peter Roussopoulos, James P. Barnett

The potential impact of herbivores on the susceptibility of the marsh plant Sagittaria lancifolia to saltwater intrusion in coastal wetlands

The objective of this study was to experimentally evaluate the effects of simulated herbivory on the ability of a freshwater marsh plant to recover from temporary saltwater intrusion such as can be caused by tropical storms. Sods containing Sagittaria lancifolia, a dominant plant in interior coastal marshes, were manipulated in the field so as to subject plants to a pulse of 15‰ salt water for a d
Authors
James B. Grace, Mark Ford

An examination of organic/carbonate-bound metals in bottom sediments of Bayou Trepagnier, Louisiana

To assess potential impact of metals on the biosphere in bottom sediments, forms were determined for selected metals in a southeastern Louisiana bayou, Bayou (B.) Trepagnier, which has been impacted by industrial activity at its head by a manufacturing complex (MC). Ten pairs of cores along the length of the bayou allowed variation with distance to be studied. Sequential extractions provided data
Authors
Timothy J. Dore, Alan M. Bailey, John W. McCoy, Glenn W. Johnson

Initial comparison of bird communities of three southern forested wetlands

No abstract available.
Authors
P.B. Hamel, Wylie C. Barrow, Richard A. Fischer, Michael P. Guilfoyle, Terry J. Spengler, James S. Wakely

Plant succession and greentree reservoir management: Implications for management and restoration of bottomland hardwood wetlands

Bottomland hardwood forests are distributed along rivers and streams throughout the central and eastern United States, with the greatest concentration in the Southeast. Past and projected losses of bottomland hardwoods and degradation of remaining stands suggest that habitat management and/or restoration strategies that target multiple species and multiple uses will be necessary to maintain, enhan
Authors
Sammy L. King, James A. Allen

Normalization of metal concentrations in estuarine sediments from the Gulf of Mexico

Metal concentrations were examined in sediments from 497 sites within the estuaries of the Gulf of Mexico by the United States Environmental Protection Agency's Environmental Monitoring and Assessment Program (EMAP). Data were normalized for extant concentrations of aluminum to isolate natural factors from anthropogenic ones. The normalization was based on the hypothesis that metal concentrations
Authors
J.Kevin Summers, Terry L. Wade, Virginia D. Engle, Ziad A. Malaeb

Effects of nutrients and hydroperiod on Typha, Cladium, and Eleocharis: Implications for everglades restoration

The recent expansion of Typha domingensis (Typha) into areas of the Everglades previously dominated by Cladium jamaicense (Cladium) communities has led to competing hypotheses about the importance of nutrient concentration vs. hydroperiod in controlling the distribution of these species. In this study, experimental mixtures of Typha domingensis, Cladium jamaicense, and Eleocharis interstincta (Ele
Authors
S. Newman, James B. Grace, J. W. Koebel

Seagrass responses to long-term light reduction by brown tide in upper Laguna Madre, Texas: distribution and biomass patterns

A brown tide caused by a very dense bloom of an as yet undescribed species of the new class Pelagophyceae was first reported in upper Laguna Madre, Texas, USA, in June 1990 and has been there continuously through December 1995. No change in response to reduced light was evident in the distribution of the seagrass Halodulewrightii along transects sampled before the brown tide in 1988 and resampled
Authors
Christopher P. Onuf