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Publications

Explore WARC's science publications.

Filter Total Items: 3367

The use of geographic information system technology to compare the environmental impacts of human development on Mobile Bay, Alabama and Galveston Bay, Texas

No abstract available
Authors
Pasquale F. Roscigno, Marcia McNiff, Mary C. Watzin, Wei Ji
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Using gis and image processing technology to assist wetland planning, protection, and restoration in coastal Louisiana

No abstract available.
Authors
John Barras, James B. Johnston, Craig Johnson
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

The effects of habitat productivity on competition intensity

No abstract available.
Authors
James B. Grace
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Using GIS to determine the effects of contaminated sediments on natural resources in an estuary

No abstract available.
Authors
P.F. Roscigno, G. M. Martin, J. B. Johnston, Mary C. Watzin
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

A geographic information systems technique for monitoring contaminants in Galveston Bay, Texas

A geographic information system (GIS) was used to compile a series of databases containing details concerning metal contamination and pollution sources to study their impacts on the Galveston Bay (TX) ecosystem. Using these databases, a series of maps with various overlays was created with ARC/INFO software. These maps allowed patterns of spatial distribution of numerous variables to be easily vis
Authors
Marcia McNiff, P.F. Roscigno, W. Ji
By
Ecosystems Mission Area, Science Synthesis, Analysis and Research Program, Science Analytics and Synthesis (SAS) Program, Wetland and Aquatic Research Center

Multiple temporal and spatial remote sensing data as inputs into a landcover resource geographic information system

No abstract available.
Authors
Elijah Ramsey III, Craig A. Johnson
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Preliminary analysis of spectral data collected for the purpose of wetland discrimination

No abstract available.
Authors
Elijah Ramsey III, R. Spell, James B. Johnston
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Knowledge-based gis approaches: A prototype expert system for wetland resource management

No abstract available.
Authors
Wei Ji, James B. Johnston, Marcia McNiff, Loyd C. Mitchell
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Canvasback food density in the Mississippi River Delta: Habitat and temporal differences

No abstract available
Authors
Ronald R. Bielefeld, Alan D. Afton
By
Ecosystems Mission Area, Cooperative Research Units, Wetland and Aquatic Research Center

Ecology and management of postbreeding waterfowl

No abstract available.
Authors
William L. Hohman, C. Davison Ankney, David H. Gordon
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Size bias in traditional analyses of substitutive competition experiments

The objective of this study was to examine the claim that traditional measures of competitive performance in substitutive experiments are biased towards larger plants. Results from a three-year diallele experiment of 6 marsh plant species were analyzed using both Relative Yields (a traditional analysis) and the Relative Efficiency Index (a recently proposed analysis presumed to be size-independent
Authors
James B. Grace, Janet R. Keough, Glenn R. Guntenspergen
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Alternate reproductive strategies in the California gull

We analysed 6 years of reproduction data for 176 California gulls (Larus californicus) surviving from 1980 to 1988. Using a statistical model adapted from Rao's (1958) and Tucker's (1966) generalized growth curve analysis, we reconstructed the reproductive patterns of gulls aged from 0 to 26 years. Individuals were highly consistent in following one of two patterns of reproduction. In a primary pa
Authors
Bruce H. Pugesek, P. Wood
By
Ecosystems Mission Area, Wetland and Aquatic Research Center