Publications
Explore WARC's science publications.
Filter Total Items: 3502
Global climate change: Implications for submerged aquatic vegetation Global climate change: Implications for submerged aquatic vegetation
No abstract available.
Authors
William M. Rizzo, Hilary A. Neckles
Spectral reflectance and canopy structure characteristics of gulf coast wetland vegetation types Spectral reflectance and canopy structure characteristics of gulf coast wetland vegetation types
Field measurements of canopy structure and species composition are related to spectral reflectance measurements taken with a radiometer over a number of marsh sites. Marsh vegetation types are discussed in terms of their characteristic canopy structure and phenology; the influence of these characteristics on spectral reflectance will be examined. Vegetation types that are discussed...
Authors
R. Spell, Elijah W. Ramsey III
Ecological Benefits of the Conservation Reserve Program Ecological Benefits of the Conservation Reserve Program
No abstract available.
Authors
Christopher P. Dunn, F. Stearns, Glenn R. Guntenspergen, David M. Sharpe
Marsh submergence vs. marsh accretion: Interpreting accretion deficit data in coastal Louisiana Marsh submergence vs. marsh accretion: Interpreting accretion deficit data in coastal Louisiana
The apparent imbalance between relative sea-level rise and vertical marsh accretion is frequently cited as a major factor in the problem of wetland loss in Louisiana. Rates of relative sea-level rise are high in Louisiana due to high rates of subsidence. Although marsh accretion rates are also high, they are usually insufficient to maintain the relative elevation of the marsh surface...
Authors
Denise J. Reed, Donald R. Cahoon
The examination of a competition matrix for transitivity and intransitive loops The examination of a competition matrix for transitivity and intransitive loops
Recent examinations of competition matrices for transitivity (species A > species B > species C) have used techniques that can be subject to certain biases. First, recent theoretical and empirical analyses have shown that traditional measures of competitive performance are biased in favor of the larger species. It is argued that this size bias has the potential to bias analyses of...
Authors
James B. Grace, Glenn R. Guntenspergen, Janet R. Keough
Survival of female canvasbacks wintering in coastal Louisiana Survival of female canvasbacks wintering in coastal Louisiana
Annual survival probabilities of female canvasbacks (Aythya valisineria) are lower than those of males, but sources and timing of mortality are poorly understood. To further elucidate causes of reduced annual survival in female canvasbacks, we estimated survival rates for radio-tagged females in coastal Louisiana during winters 1988-91. Survival estimates for winters 1988-91 were 0.946 ±...
Authors
William L. Hohman, Ronald D. Pritchert, Joseph Moore, D.O. Schaeffer
Recent growth increases in old-growth longleaf pine Recent growth increases in old-growth longleaf pine
Longleaf pine (Pinuspalustris Mill.) tree-ring data were obtained from an old-growth stand located in Thomas County, Georgia. The tree-ring chronology from the pine stand is composed of a collection of cores extracted from 26 trees ranging in age from approximately 100 to 400 years. These cores were prepared, dated, and measured, and the resulting data were examined with...
Authors
D.C. West, T.W. Doyle, M.L. Tharp, J.J. Beauchamp, William J. Platt, D.J. Downing
A multifunctional decision support GIS for coastal management A multifunctional decision support GIS for coastal management
No abstract available.
Authors
Wei Ji, Loyd C. Mitchell, Marcia McNiff, James B. Johnston
Natural resource problem solving: An interdisciplinary approach in coastal Louisiana Natural resource problem solving: An interdisciplinary approach in coastal Louisiana
No abstract available.
Authors
A. Lee Foote, Virginia R. Burkett, S. Jeffress Williams
Laguna madre: Seagrass changes continue decades after salinity reduction Laguna madre: Seagrass changes continue decades after salinity reduction
Vegetation maps of the lower Laguna Madre prepared from surveys conducted in 1965–1967, 1974–1976, and 1988 document a >330 km2 decrease in cover byHalodule wrightii, an increase of almost 190 km2 in other seagrass species, and an increase of 140 km2 in bare bottom. Loss in seagrass cover is confined to deeper parts of the laguna; turbidity caused by maintenance dredging is the suspected...
Authors
Millicent L. Quammen, Christopher P. Onuf
Use of a mark-visual recapture technique to estimate the relative abundance of nutria Use of a mark-visual recapture technique to estimate the relative abundance of nutria
No abstract available.
Authors
Lori A. Johnson