Wetland and Aquatic Research Center

Publications

Explore WARC's science publications.

Filter Total Items: 2,402
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Year Published: 1998

Variations in zebra mussel (Dreissena polymorpha) veliger densities throughout 1996 at Dam 52 on the lower Ohio River

Zebra mussel veliger densities were monitored throughout 1996 at Lock and Dam 52 on the lower Ohio River near Brookport, IL. The spawning season occurred between mid June and early September with veliger densities peaking at 30,000/m3 in late June. Veliger first appeared at a water temperature of 21° C. When spawning ended in September...

Reed, Darren P.; Herod, Jeffrey J.; Sickel, James B.

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Year Published: 1998

Characterization of an old-growth bottomland hardwood wetland forest in Northeast Texas: Harrison Bayou

Most wetland losses in the southern region over the past 200 years have occurred in bottomland hardwood forests. By 1980 the original extent of palustrine bottomland in Texas had been reduced by 63%, from roughly 16 to 6 million acres. Additional losses have occurred during more recent years as a result of conversion to agriculture...

Walker, Laurence C.; Brantley, Thomas; Burkett, Virginia

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Year Published: 1998

Perspectives on the land use history of North America: A context for understanding our changing environment

Ecological change is constant and profound, yet it often occurs at temporal and spatial scales that are difficult to measure and interpret. This publication demonstrates how diverse data bases, archived in different formats and at numerous locations, can be brought together to provide an integrated perspective on the relationship between land use...

Sisk, Thomas D.
Perspectives on the land use history of North America: a context for understanding our changing environment; 1998; Federal Government Series; BSR; 1998-0003;

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Year Published: 1998

Vulnerability of coastal wetlands in the Southeastern United States: climate change research results, 1992-97

As part of the USGCRP research framework on coastal lands and ecosystems, the Biological Resources Division of the U.S. Geological Survey (National Wetlands Research Center) entered into partnership with Rice University, Louisiana State University, Duke University, Clemson University, University of Southwestern Louisiana, University of Georgia,...

Guntenspergen, Glenn R.; Vairin, Beth A.
Vulnerability of coastal wetlands in the Southeastern United States: climate change research results, 1992-97; 1998; Federal Government Series; BSR; 1998-0002; Guntenspergen, Glenn R.; Vairin, Beth A.

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Year Published: 1997

Bottomland hardwood reforestation for neotropical migratory birds: Are we missing the forest for the trees?

Reforestation of bottomland hardwoods on lands managed for wildlife or timber production has historically emphasized planting heavy-seeded oaks (Quercus spp.). Although techniques have been developed for successful oak establishment, these plantings often require 5 or more years before establishing a 3-dimensional forest structure. We suggest...

Twedt, Daniel J.; Portwood, J.

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Year Published: 1997

Evaluation of a mallard HSI model for the Lower Mississippi Valley

We evaluated a habitat suitability (HSI) model developed for mallards (Anas platyrhynchos) wintering in the Lower Mississippi Valley by comparing mallard densities obtained from aerial surveys with habitat suitability indices derived from satellite imagery for 25, 256km2 sampling units. Regression models that related mallard densities to habitat...

Twedt, D.J.; Brown, M.W.; Nassar, J.R.

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Year Published: 1997

Coastal wetlands and global change: overview

The potential impacts of climate change are of great practical concern to those interested in coastal wetland resources. Among the areas of greatest risk in the United States are low-lying coastal habitats with easily eroded substrates which occur along the northern Gulf of Mexico and southeast Atlantic coasts. The Intergovernmental Panel on...

Guntenspergen, G.R.; Vairin, B.; Burkett, V.R.
Coastal wetlands and global change: overview; 1997; FS; 089-97; Guntenspergen, G. R.; Vairin, B.; Burkett, V. R.

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Year Published: 1997

Effects of climate change on southeastern forests

Forests of the coastal plain region of the southeastern United States are among the most productive in North America. Because they form the basis of a large timber and wood products industry, these forests are of considerable economic importance. Also, the forests are rich in plant and animal species. Because they are diverse as well as...

Harcombe, Paul A.
Effects of climate change on southeastern forests; 1997; FS; 093-97; Harcombe, Paul A.

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Year Published: 1997

Global change and submerged aquatic vegetation research

Communities of submerged aquatic vegetation (SAY) are important components of many freshwater, brackish, and marine aquatic ecosystems. They prevent erosion by baffling the impacts of waves, especially from storms. These aquatic plant communities remove nutrients and other pollutants from river and runoff inputs to coastal areas, preventing their...

Neckles, H.A.; Guntenspergen, G.R.; Rizzo, W.M.; Michot, T.C.
Global change and submerged aquatic vegetation research; 1997; FS; 090-97; Neckles, H. A.; Guntenspergen, G. R.; Rizzo, W. M.; Michot, T. C.

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Year Published: 1997

Global warming, sea-level rise, and coastal marsh survival

Coastal wetlands are among the most productive ecosystems in the world. These wetlands at the land-ocean margin provide many direct benefits to humans, including habitat for commercially important fisheries and wildlife; storm protection; improved water quality through sediment, nutrient, and pollution removal; recreation; and aesthetic values....

Cahoon, Donald R.
Global warming, sea-level rise, and coastal marsh survival; 1997; FS; 091-97; Cahoon, Donald R.

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Year Published: 1997

Predicting coastal flooding and wetland loss

The southeastern coastal region encompasses vast areas of wetland habitat important to wildlife and other economically valuable natural resources. Located on the interface between sea and land, these wetland habitats are affected by both sea-level rise and hurricanes, and possibly by hydroperiod associated with regional climatic shifts....

Doyle, Thomas W.
Predicting coastal flooding and wetland loss; 1997; FS; 094-97; Doyle, Thomas W.

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Year Published: 1997

Salt tolerance of southern baldcypress

Historically, cypress-tupelo swamps covered much of the low-lying coastal regions of the Southeast. However, saltwater intrusion and increased flooding over the past 30 years, combined with past logging, have depleted the numbers and decreased the survival and growth of baldcypress (Taxodium distichum) in coastal areas along the Gulf of Mexico.

Allen, James A.; Burkett, Virginia R.
Salt tolerance of southern baldcypress; 1997; FS; 092-97; Allen, James A.; Burkett, Virginia R.