Publications
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First collection of rudd, Scardinius erythrophthalmus (Cyprinidae), in the New River, West Virginia First collection of rudd, Scardinius erythrophthalmus (Cyprinidae), in the New River, West Virginia
We collected the first rudd, Scardinius erythrophthalmus (Cyprinidae), from the New (Kanawha) River drainage, West Virginia. The rudd has now been reported from 12 states (Arkansas, Kansas, Illinois, Massachusetts, Maine, Missouri, New York, Oklahoma, Virginia, Wisconsin, and West Virginia) and several major river systems. The rapid spread of the rudd has apparently been facilitated by...
Authors
R.S. Easton, D.J. Orth, N.M. Burkhead
Using GIS to determine the effects of contaminated sediments on natural resources in an estuary 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
A geographic information systems technique for monitoring contaminants in Galveston Bay, Texas 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...
Authors
Marcia McNiff, P.F. Roscigno, W. Ji
Multiple temporal and spatial remote sensing data as inputs into a landcover resource geographic information system 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
Preliminary analysis of spectral data collected for the purpose of wetland discrimination Preliminary analysis of spectral data collected for the purpose of wetland discrimination
No abstract available.
Authors
Elijah Ramsey III, R. Spell, James B. Johnston
Knowledge-based gis approaches: A prototype expert system for wetland resource management 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
Canvasback food density in the Mississippi River Delta: Habitat and temporal differences Canvasback food density in the Mississippi River Delta: Habitat and temporal differences
No abstract available
Authors
Ronald R. Bielefeld, Alan D. Afton
Ecology and management of postbreeding waterfowl Ecology and management of postbreeding waterfowl
No abstract available.
Authors
William L. Hohman, C. Davison Ankney, David H. Gordon
Size bias in traditional analyses of substitutive competition experiments 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...
Authors
James B. Grace, Janet R. Keough, Glenn R. Guntenspergen
Factors influencing the distribution of blackchin tilapia Sarotherodon melanotherodon (Osteichthyes: Cichlidae) in the Indian River system, Florida Factors influencing the distribution of blackchin tilapia Sarotherodon melanotherodon (Osteichthyes: Cichlidae) in the Indian River system, Florida
The blackchin tilapia, Sarotherodon melanotheron, was first collected from the Indian River system, in Brevard County, Florida, in 1980. Since its introduction, this species has expanded its range northward along the coast approximately 37 km, to just north of Whites Point, Brevard County, and southward about 68 km to Vero Beach, Indian River County. Laboratory studies on salinity...
Authors
Dawn P. Jennings, J.D. Williams
Alternate reproductive strategies in the California gull 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...
Authors
Bruce H. Pugesek, P. Wood
Selective dipnetting of largemouth bass during electrofishing Selective dipnetting of largemouth bass during electrofishing
We electrofished 10 north‐central Texas reservoirs from 1987 through 1990 by either dipnetting all electroshocked fish (intensive dipnetting) or selectively dipnetting only fish visually identified as largemouth bass Micropterus salmoides. We compared selected indices of population structure (proportional stock density, relative stock density, and young–adult ratio) and abundance (catch...
Authors
Daniel J. Twedt, W. Clell Guest, Bobby W. Farquhar