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Effects Of Forest Clear Cutting On Spotted Salamander ( Ambystoma Maculatum) Migration, Jessica Susannah Veysey

Master's Theses and Capstones

Upland buffer zones are a proposed management tool for vernal-pool-breeding amphibians. Substantial validation of buffers, via experimental upland habitat disturbance, is lacking. Specifically, no studies have examined immediate effects of clear cutting on spotted salamander (Ambystoma maculatum ) migration. I used clear cutting to experimentally manipulate upland buffer widths at 11 vernal pools. I then radiotracked 40 adult spotted salamanders at these pools, and modeled their migration with mixed-effects regression. Mean maximum distance from the pool was 106.0 +/- 15.4 m (range = 1.6 to 427.6 m). At clear cut-treatment pools, mean percent of time in the cut was 27.2 …

Factors Affecting Plant Community Composition And Dynamics In The Ossipee Pine Barrens, New Hampshire, Lauren Fredrick Howard

Doctoral Dissertations

Forty-one 0.25 ha sites were sampled in the Ossipee Pine Barrens to identify and describe tree community types and investigate factors controlling forest composition and dynamics. Every site had three site-time assemblages (STA's) representing past, present, and future trees. Past (1952) vegetation was calculated based on reverse growth estimates of current stems and stumps. Future (2052) vegetation was predicted by current sapling (<10 cm dbh and ≥1 m tall) relative densities.

Cluster analysis produced three community types from 121 STA's: pitch pine, mixed pine-hardwoods, and red maple. Pitch pine communities comprised 63% of sites in 1952, but declined since. Mixed pine-hardwoods peaked at 58% in 2002, but were …

Conservation Versus Survival: A Cultural Ecological Study Of Changing Settlement Patterns, Cultures, And Land Use In The Rio Platano Biosphere Reserve Of Northeast Honduras, Elizabeth Ann Fraser

LSU Doctoral Dissertations

Conserving ecologically valuable areas is proclaimed a priority by governments, institutions, and citizens throughout the world. Preventing the erosion of the remaining indigenous cultures also receives widespread support. In response to these desires, numerous protected areas now exist; spaces that theoretically should attain both ecological and cultural preservation. However, many of these areas are found within a larger setting plagued by ongoing struggles to meet basic needs. Often these larger problems create a challenge to, if not work in opposition to, the original aims of protected areas. This study of nine communities looks at these and related issues in the …

Spatial Variability And Isotopic Studies Of The Prairie -Forest Transition Soil In Louisiana., Asfaw Bekele

LSU Historical Dissertations and Theses

The calcareous prairies of Louisiana are among the most endangered ecosystems in North America. The major threat to this ecosystem is the invasion by woody and herbaceous plants, primarily eastern red cedar (Juniperus virginiana ). The restoration and management of these rare plant communities require a thorough understanding of the soils supporting them. Geostatistical, fractal, and stable isotopic procedures were integrated to study the soil and vegetation spatial variability. The prairie soil was alkaline, the forest soil was acidic, and the transition soil was neutral. The spherical model described the spatial variability of virtually all the soil properties considered with …

American Alligator Nesting Ecology In Impounded Marsh Habitat, Louisiana., Steven Richard Reagan

LSU Historical Dissertations and Theses

The goal was to monitor a large number of female alligators over a 3-year period to obtain information on alligator nesting ecology. This dissertation, although designed to estimate annual nesting rates, provides additional meaningful information on methods of capture, tag retention rates, nest spacing patterns, segregation of size classes, nest site fidelity, the relationship between attendance and nest success, the effects of fire ants on alligator nest success, the relationship between hatchling alligators and their mother, and hatchling dispersal. Passive integrated transponder (PIT), monel web, and cranial mounted reflector tags were evaluated for marking and identifying alligators. Use of harmonic …

An Analytical Approach To A Tree-Farm Wetland Study., Robert Cunninghame Davidge

LSU Historical Dissertations and Theses

Wetland delineation is important because federal and local government regulations limit permissible uses of wetlands. Federal delineation regulations are based upon the use of a manual jointly agreed upon by EPA, USACOE, and NRCS. The manual provides for classification of land as either wetland or non-wetland based upon the 3 criteria of soil, vegetation, and hydrology. No provision is made for gradation between categorical wetland and categorical non-wetland. Controversy has sometimes developed between landowners and environmentalists as to proper wetland classification; some delineations have been considered arbitrary. The analytical method of wetland appraisal provides a means of assigning continuous numerical …

Origins Of Agriculture| Resource Depletion And Productivity Maximization, Wan-Jin Kim

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Interactions Between Fusarium Oxysporum F. Sp. Lycopersici And Nonpathogenic Strains Of Fusarium Oxysporum., Monica Michelle Lear

LSU Historical Dissertations and Theses

Race 1 isolates collected from tomato roots were used to develop an orange mutant of Fusarium oxysporum f. sp. lycopersici (FOL) for use in competitive infection tests against nonpathogenic F. oxysporum isolates. Eighty one color mutants were induced by exposure to ultraviolet light. The mutant ORA-22 retained pathogenicity and growth habit similar to the wild-type. Preliminary competitive infection tests indicated differences within the nonpathogenic population in the ability to suppress or enhance infection by FOL orange mutant ORA-22. Four vegetative compatibility groups (VCGs) were tested to determine if competitive infection ability was associated with VCG designation. Results from these tests …

Ecology Of Erwinia Chrysanthemi, Causal Agent Of Bacterial Stem And Root Rot On Sweet Potato And Etiology Of Souring., Valmir Duarte

LSU Historical Dissertations and Theses

During three seasons, mother storage roots of Beauregard sweetpotato were inoculated with Erwinia chrysanthemi in March, and the pathogen was recovered from them the day they were bedded, 7 days later, and at the first and second pullings of slips as well as from underground stems at harvest in September and October of the first and second transplantings, respectively. Little stem rot occurred in the fields during the three seasons. Thirteen strains of E. chrysanthemi, 8 isolated originally from sweetpotato and 5 from other hosts, and one strain of E. carotovora subsp. carotovora were inoculated on sweetpotato and 12 different …

Plant Germination And Growth Inhibitors From Ceratiola Ericoides And Calamintha Ashei (Herbicides, Allelopathy, Monoterpenes, Phenolics)., Nesrin Tanrisever

LSU Historical Dissertations and Theses

As part of a chemical-ecological study of the Florida scrub community, Ceratiola ericoides (Empetraceae) and Calamintha ashei (Lamiaceae) were chemically investigated for natural products with possible allelochemical activities. The chromatographic separations and chemical investigations were guided by germination and radicle growth bioassays performed on seeds of commercial lettuce (Lactuca sativa) and Schizachyrium scoparium, a native grass of the Florida sandhill community. From the dichloromethane extract of aerial parts of C. ericoides, 2', 4'-dihydroxychalcone, the dihydrochalcones angoletin and 2',6'-dihydroxy-4-methoxy-3',5'-dimethyldihydrochalcone, the flavanones 8-methylpinocembrin, 6,8-dimethylpinocembrin and 7-hydroxyflavanone were isolated along with the triterpenes erytrodiol and ursolic acid. Significant inhibition on S. scoparium radicle …

The Wild Rice Mystique: Resource Management And American Indians' Rights As A Problem Of Law And Culture, Charlene L. Smith, Howard J. Vogel

William Mitchell Law Review

No abstract provided.

Saving Energy In Rural Maine : Or Who's Doing What On The Farm, Mane Department Of Agriculture

Maine Collection

Saving Energy In Rural Maine : Or Who's Doing What on the Farm

Compiled by Bettina M. Blanchard and Edited by Bill Seekins.

Maine Department of Agriculture, Food and Rural Resources, Division of Resources Development, Augusta, Maine, 1983.

Contents: List of Photographs and Diagrams / Introduction / Projects / 1. Wind / 2. Wood Heat Applications On the Farm / 3. Solar Applications / 4. Manure Handling and Waste Utilization / 5. Energy Efficient Cooling Methods / 6. Energy Saving In Field Operations / 7. Production and Use of Alternative Fuels / 8. Multi-Project Sites / Summary and Conclusions / …

Newsletter - 1973-10-04, E. De La Garza

Kika de la Garza Congressional Papers - Newsletters

No abstract provided.

Effects Of Prescribed Burning On The Understory Vegetation In Pine-Hardwood Forests Of Southeastern Louisiana., Hershel Clayton Reeves

LSU Historical Dissertations and Theses

No abstract provided.