Publications
Explore WARC's science publications.
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Survival of female northern pintails wintering in southwestern Louisiana Survival of female northern pintails wintering in southwestern Louisiana
The North American breeding population of northern pintails (Anas acuta) has reached previously unprecedented low numbers 4 times since 1983. Because pintails show high fidelity to wintering areas, regional survival estimates and identification of factors influencing survival are needed to guide management of wintering pintails. We used radiotelemetry to estimate survival rates of female...
Authors
Robert R. Cox, Alan D. Afton, Richard M. Pace
Factors influencing cattail abundance in the northern Everglades 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...
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.) 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
An evaluation of strip transect aerial survey methods for monitoring manatee populations in Florida An evaluation of strip transect aerial survey methods for monitoring manatee populations in Florida
No abstract available.
Authors
Karl E. Miller, Bruce B. Ackerman, Lynn W. Lefebvre, Kari B. Clifton
On the use of path analysis and related procedures for the investigation of ecological problems On the use of path analysis and related procedures for the investigation of ecological problems
No abstract available.
Authors
James B. Grace, Bruce H. Pugesek
Resource management of forested wetlands: Hurricane impact and recovery mapped by combining Landsat TM and NOAA AVHRR data Resource management of forested wetlands: Hurricane impact and recovery mapped by combining Landsat TM and NOAA AVHRR data
A temporal suite of NOAA Advanced Very High Resolution Radiometer (AVHRR) images, transformed into a vegetation biomass indicator, was combined with a single-date classification of Landsat Thematic Mapper (TM) to map the association between forest type and hurricane effects. Hurricane effects to the forested wetland included an abrupt decrease and subsequent increase in biomass. The...
Authors
Elijah Ramsey III, D.K. Chappell, Dennis M. Jacobs, Sijan Sapkota, D.G. Baldwin
Shot prevalences and diets of diving ducks five years after ban on use of lead shotshells at Catahoula Lake, Louisiana Shot prevalences and diets of diving ducks five years after ban on use of lead shotshells at Catahoula Lake, Louisiana
Catahoula Lake, central Louisiana, is a RAMSAR Convention Wetland of International Importance and among the most important wintering and staging areas for waterfowl in North America. To evaluate exposure rates in Catahoula Lake waterfowl 5 years after a ban on use of lead shot, we determined the prevalence of ingested shot and diets of canvasbacks (Aythya valisineria) and lesser scaup (A...
Authors
Joseph L. Moore, William L. Hohman, Timothy M. Stark, Gary A. Weisbrich
Coastal Louisiana Coastal Louisiana
No abstract available
Authors
James G. Gosselink, J. Coleman, Robert E. Stewart
Natural establishment of woody species on abandoned agricultural fields in the lower Mississippi Valley: first- and second-year results Natural establishment of woody species on abandoned agricultural fields in the lower Mississippi Valley: first- and second-year results
The natural establishment of woody seedlings on abandoned agricultural fields was investigated at sites in Louisiana and Mississippi. Series of disked and undisked plots originating at forest edges and oriented in cardinal directions were established on fields at each site. During the firest 2 years, seedling recruitment was dominated by sweetgum, sugarberry, and elms at both sites...
Authors
J. A. Allen, J.W. McCoy, B. D. Keeland
Effects of flooding regime, mycorrhizal inoculation and seedling treatment type on first-year survival of Nuttal Oak (Quercus nuttallii Palmer) Effects of flooding regime, mycorrhizal inoculation and seedling treatment type on first-year survival of Nuttal Oak (Quercus nuttallii Palmer)
Three different types of Nuttall oak (Quercus nuttallii Palmer) seedlings were planted on floodprone, former cropland in Mississippi, Louisiana, and Texas. The three types of 1+0 seedlings planted at each site in January and February of 1995 were bareroot seedlings, seedlings grown in 164 square centimeters plastic containers, and container grown seedlings inoculated with vegetative...
Authors
Virginia Burkett, Hans Williams
Characterization of an old-growth bottomland hardwood wetland forest in Northeast Texas: Harrison Bayou 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 and timber harvests; these factors and the need to...
Authors
Laurence C. Walker, Thomas Brantley, Virginia Burkett
Nonindigenous species: methods of introduction and impacts Nonindigenous species: methods of introduction and impacts
No abstract available.
Authors
Pamela L. Fuller