Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10420
Water-level conditions in the Black Creek and upper Cape Fear aquifers, 1992, in parts of Bladen and Robeson counties, North Carolina Water-level conditions in the Black Creek and upper Cape Fear aquifers, 1992, in parts of Bladen and Robeson counties, North Carolina
Water-level measurements were made in 68 wells throughout an area of about 860 square miles in Bladen and Robeson Counties, North Carolina, during September and October 1992. Water levels from 58 wells were used to determine the configuration of the potentiometric surface of the Black Creek aquifer. A map of the potentiometric surface shows the potential for ground water to flow from...
Authors
Alfred Gerald Strickland
Water resources data, North Carolina, water year 1993. Volume 2: Ground-water records Water resources data, North Carolina, water year 1993. Volume 2: Ground-water records
No abstract available.
Authors
R. W. Coble, D.G. Smith, B.C. Ragland
Managing coastal wetlands: Complexities, compromises, and concerns Managing coastal wetlands: Complexities, compromises, and concerns
No abstract available
Authors
Joy B. Zedler, Abby Powell
Production and decomposition of Spartina patens in a degrading coastal marsh Production and decomposition of Spartina patens in a degrading coastal marsh
Production and decomposition rates were calculated for Spartina patens in a mesohaline coastal marsh in Louisiana. Production was estimated to be 800 g m2 yr-1 during 1991 and 1,696 g m-1 yr-1 during 1992. The relative decomposition rate of S. patens stems was -0.001152 g g-1 d-1 which may be restated as a half life of 395 days. Both production and decomposition rates for this area are...
Authors
Lori A. Johnson, Kathleen A. Reynolds, A. Lee Foote
Diet differences in Redheads from nearshore and offshore zones in Louisiana Diet differences in Redheads from nearshore and offshore zones in Louisiana
Habitat management decisions for diving ducks in winter are limited by the lack of information concerning their use of nearshore and offshore zones. Therefore, we compared diets of redheads (Aythya americana) collected from nearshore (n = 206) and offshore (n = 72) zones during winters at the Chandeleur Islands, Louisiana, 1987-89. A greater (P 0.05) proportion of redheads from nearshore...
Authors
Thomas C. Michot, A.J. Nault
Wetland systems and their response to management Wetland systems and their response to management
No abstract available.
Authors
Glenn R. Guntenspergen, J.R. Keough, J. Allen
Nesting habitat of Belding’s Savannah sparrows in coastal salt marshes Nesting habitat of Belding’s Savannah sparrows in coastal salt marshes
Although the Belding’s Savannah sparrow (Passerculus sandwichensis beldingl) is listed as endangered in California, little is known about the factors that affect its abundance and distribution. Numbers of breeding pairs, nesting territory sizes, and vegetation characteristics were measured at fourteen study plots in two southern California coastal wetlands, Tijuana Estuary and Los...
Authors
Abby Powell
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