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Explore WARC's science publications.

Filter Total Items: 3389

Management implications of fish trap effectiveness in adjacent coral reef and gorgonian habitats

A combination of visual census and trap sampling in St. John, USVI indicated that traps performed better in gorgonian habitat than in adjacent coral reef habitat. Although most families were seen more commonly in coral habitat, they were caught more often in gorgonian areas. Traps probably fished more effectively in gorgonian habitats, especially for migrating species, because traps provided shelt
Authors
Nicholas Wolff, Rikki Grober-Dunsmore, Caroline S. Rogers, James P. Beets

Root and shoot responses of Taxodium distichum seedlings subjected to saline flooding

Variation among progeny of five half-sib family collections of baldcypress (Taxodium distichum) from three freshwater and two brackish-water seed sources subjected to saline flooding was evaluated Mini-rhizotrons (slant tubes) were used to monitor root elongation for a period of 99 days. Salinity level produced significant effects across all baldcypress half-sib families, with root elongation aver
Authors
K. W. Krauss, J. L. Chambers, J. A. Allen, B.P. Luse, A.S. DeBosier

Natural regeneration and growth of Taxodium distichum (L.) rich. In Lake Chicot, Louisiana after 44 years of flooding

Lake Chicot, in south central Louisiana, USA, was created in 1943 by the impoundment of Chicot Bayou. Extensive establishment of woody seedlings occurred in the lake during a 1.5 year period, including the growing seasons of both 1986 and 1987, when the reservoir was drained for repair work on the dam. Study plots were established in September 1986 to document woody vegetation establishment and to
Authors
B. D. Keeland, W.H. Conner

Effects of spatial grouping on the functional response of predators

A unified mechanistic approach is given for the derivation of various forms of functional response in predator-prey models. The derivation is based on the principle-of-mass action but with the crucial refinement that the nature of the spatial distribution of predators and/or opportunities for predation are taken into account in an implicit way. If the predators are assumed to have a homogeneous sp
Authors
C. Cosner, D.L. DeAngelis, J.S. Ault, D.B. Olson

Think before you sample data!

No abstract available.
Authors
P. E. Bourgeois, V. J. Sclafani, J.K. Summers, S. C. Robb, Beth A. Vairin

Suggestions for new and aspiring graduate students in wildlife science

The transition from an undergraduate to a graduate program can be a difficult experience for students. Many undergraduates are unfamiliar with the process of preparing for graduate school, especially the search for a graduate program. Once in graduate school, they may be unfamiliar with requirements (both written and unwritten) and expectations, and they may also lack the necessary knowledge or s
Authors
Richard A. Fischer, Sammy L. King

Radar remote sensing of wetlands

No abstract available.
Authors
Elijah Ramsey III

Effects of vertebrate herbivores on soil processes, plant biomass, litter accumulation and soil elevation changes in a coastal marsh

1 Submergence of coastal wetlands in Louisiana is currently rapid and widespread. A number of factors contribute to this loss of habitat, including the activities of herbivores. The objective of this study was to examine the effects of large mammals, predominantly nutria and wild boar, on processes controlling soil elevation in coastal marshes.2 Effects of herbivores on soil and vegetation were as
Authors
Mark Ford, James B. Grace

Factors influencing cattail abundance in the northern Everglades

Since the early 1900s, the Everglades have been influenced by anthropogenic actions including altered hydrology and increased nutrient loading. In the northern Everglades an apparent effect of these disturbances has been the development and proliferation of dense cattail (Typha spp. ) stands in areas previously dominated by sawgrass (Cladium jamaicense Crantz) and sloughs. Cattail cover, soil nutr
Authors
S. Newman, J. Schuette, James B. Grace, K. Rutchey, T. Fontaine, K.R. Reddy, M. Pietrucha

Recommended changes in common fish names: pikeminnow to replace squawfish (Ptychocheilus spp.)

No abstract available.
Authors
Joseph S. Nelson, Edwin J. Crossman, Hector Espinosa-Perez, Carter R. Gilbert, Robert N. Lea, James D. Williams