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Articles 241 - 269 of 269
Full-Text Articles in Entire DC Network
The Legacy Of The Hawaiian Cultivator In Windward Valleys Of Hawaii. (Volumes I And Ii)., Ronald Norman Terry
The Legacy Of The Hawaiian Cultivator In Windward Valleys Of Hawaii. (Volumes I And Ii)., Ronald Norman Terry
LSU Historical Dissertations and Theses
The composition of a forest of relicts of cultivation in four uninhabited valleys in Kohala, Hawaii, is documented. A general hypothesis is made that arboreal distribution patterns are a function of both historical land use and ecological interaction since abandonment. The physical and historical geography of the valleys was investigated. Climate varies little, but distinct geomorphic zones offer differing biological environments. Prehistoric land use consisted of taro patches with intercropped banks. Talus slope gardens supported the Polynesian tree crops 'ohi'a 'ai (Eugenia malaccensis), kukui (Aleurites moluccana), 'ulu, (Artocarpus incisus), ti (Cordyline terminalis), and noni (Morinda citrifolia), important in today's flora. …
The Effects Of Fire On Forest Community Composition, Structure, And Pattern In Florida Sandhills., Alan John Rebertus
The Effects Of Fire On Forest Community Composition, Structure, And Pattern In Florida Sandhills., Alan John Rebertus
LSU Historical Dissertations and Theses
The influence of fire on turkey oak (Quercus laevis Walt.) and sand live oak (Q. geminata Small) populations was examined in experimental fires in sandhills near Tampa. Turkey oak crown survival was positively related to oak dbh, distance to the nearest longleaf pine (Pinus palustris Mill.), and dbh of the nearest pine. The pyrogenic litter of pines adversely affected survival of small turkey oaks within 10-20 m of the nearest pine, depending on fire severity. Resprouting of crown-killed turkey oaks was inversely related to oak dbh and, in one field, distance to the nearest pine. Poor resprouting away from pines …
Rice Stink Bug, Oebalus Pugnax (F.), On Rice: Evaluation For Plant Resistance, Interaction Of Field Fungi With Feeding Damage, And Evaluation Of Insecticides For Control., Marieanne Eva Hollay
Rice Stink Bug, Oebalus Pugnax (F.), On Rice: Evaluation For Plant Resistance, Interaction Of Field Fungi With Feeding Damage, And Evaluation Of Insecticides For Control., Marieanne Eva Hollay
LSU Historical Dissertations and Theses
Feeding punctures of the rice stink bug (RSB), Oebalus pugnax (F.), provide fungi entry sites into rice, Oryza sativa (L.), grains and kernels (hulled grains). Feeding sheaths also serve as a source of nutrients for fungi. Grain spotting fungi did not affect the percentage of spotted kernels (pecky rice) and significantly reduced full grain weight only at low infestation rates of one and two RSB per panicle. Panicles had been treated with a single application of propriconazol (1000 ppm) soon after flowering and later infested in the early milk stage with RSB adult pairs for 9 days. Propriconazol was not …
Plant Germination And Growth Inhibitors From Ceratiola Ericoides And Calamintha Ashei (Herbicides, Allelopathy, Monoterpenes, Phenolics)., Nesrin Tanrisever
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 Population Ecology And Nutrient Transport Of Gulf Menhaden In Fourleague Bay, Louisiana (Mortality, Growth, Feeding, Production, Migration)., Linda Ann Deegan
The Population Ecology And Nutrient Transport Of Gulf Menhaden In Fourleague Bay, Louisiana (Mortality, Growth, Feeding, Production, Migration)., Linda Ann Deegan
LSU Historical Dissertations and Theses
An ecological study of the young-of-the-year of three year-classes of gulf menhaden (Brevoortia patronus) was conducted from July 1981 to December 1983 in Fourleague Bay, Louisiana. This study documented gulf menhaden population ecology and the importance of gulf menhaden in the nutrient and energy balance of estuaries. Young-of-the-year gulf menhaden immigrated in winter and moved to tidal creeks and ponds, where they remained until midsummer. They then moved into open bays, where they remained until the fall. This migration pattern coincides with sequentially available, but spatially separate, productivity peaks in marsh and open bays. In the fall, they emigrated to …
Seedling Johnsongrass Growth In Sugarcane As Affected By Time Of Emergence (Agroecology, Sorha, Weed Potential)., Joseph Floyd Yoder Iii
Seedling Johnsongrass Growth In Sugarcane As Affected By Time Of Emergence (Agroecology, Sorha, Weed Potential)., Joseph Floyd Yoder Iii
LSU Historical Dissertations and Theses
Field studies were conducted to document seedling johnsongrass Sorghum halepense (L.) Pers. growth as influenced by date of emergence in sugarcane (Saccharum interspecific hybrids, cultivar 'CP 65-357'). The crop was in the plant cane year of growth in 1982 and 1983, and the first stubble year in 1984. The experiments were randomized complete block designs. Johnsongrass seedling emergence days were approximately three weeks apart, from April or early May through mid-July for a total of five emergence days each year. There were 36, 60, and 72 replicates for emergence days numbered 1 to 3, 4, and 5, respectively, over three …
Manipur In Transition: Differentials Of Development In A Polyethnic Area Of India., Kiran Banga Chhokar
Manipur In Transition: Differentials Of Development In A Polyethnic Area Of India., Kiran Banga Chhokar
LSU Historical Dissertations and Theses
The present study seeks to investigate the processes of socio-economic change that have affected the major ethnic groups in Manipur, mainly the subsistence level tribals and the Meitei peasantry; the strategies adopted by these groups, and individuals within the groups, to cope with the changed environment; and the spatial expression of these processes of change in varying patterns of development. Manipur, a polyethnic state in northeastern India, is currently the scene of hostilities among the different ethnic groups. The study tests the hypothesis that the underlying cause of these conflicts is the difference in the levels of development of the …
Systematics, Redescription, And Geographic Variation Of The Blackside Darter, Percina Maculata (Pisces; Percidae)., Eugene Clifton Beckham Iii
Systematics, Redescription, And Geographic Variation Of The Blackside Darter, Percina Maculata (Pisces; Percidae)., Eugene Clifton Beckham Iii
LSU Historical Dissertations and Theses
A systematic study of the North American percid fish Percina (Alvordius) maculata (Girard) was undertaken to determine the extent and pattern of geographic variation, subspeciation, and sexual dimorphism. A brief nomenclatorial history is presented, the species is redescribed, and variation, distribution, habitat, and subgeneric relationships are discussed. Other than dorsal fin pigmentation, absence of modified midventral scales in females, and limited intrapopulational sexual dimorphism in a few morphometric characters, no variation in most of the thirty-nine characters examined is present between males and females. Morphometrics exhibited no pattern of geographic variation; however, meristic characters revealed a major trend in geographic …
A Systematic Analysis Of The Endemic Avifauna Of The Hawaiian Islands., Harold Douglas Pratt Jr
A Systematic Analysis Of The Endemic Avifauna Of The Hawaiian Islands., Harold Douglas Pratt Jr
LSU Historical Dissertations and Theses
No abstract provided.
Louisiana Parishes: Their People And Governments, A Developmental Analysis., Grace June Savoy
Louisiana Parishes: Their People And Governments, A Developmental Analysis., Grace June Savoy
LSU Historical Dissertations and Theses
No abstract provided.
Louisiana Agriculture Magazine, Summer 1978, Lsu Agricultural Experiment Station
Louisiana Agriculture Magazine, Summer 1978, Lsu Agricultural Experiment Station
Louisiana Agriculture
No abstract provided.
The Birds Of Balta, A Peruvian Dry Tropical Forest Locality, With An Analysis Of Their Origins And Ecological Relationships., John Patton O'Neill
The Birds Of Balta, A Peruvian Dry Tropical Forest Locality, With An Analysis Of Their Origins And Ecological Relationships., John Patton O'Neill
LSU Historical Dissertations and Theses
No abstract provided.
Morphodynamics And Sedimentation Of The Rio Guayas Delta, Ecuador., Rodolfo Cruz-Orozco
Morphodynamics And Sedimentation Of The Rio Guayas Delta, Ecuador., Rodolfo Cruz-Orozco
LSU Historical Dissertations and Theses
No abstract provided.
Host Plant Resistance And Ecological Studies On The Rice Stink Bug Oebalus Pugnax (Fabricius)., Shashank Shivaling Nilakhe
Host Plant Resistance And Ecological Studies On The Rice Stink Bug Oebalus Pugnax (Fabricius)., Shashank Shivaling Nilakhe
LSU Historical Dissertations and Theses
No abstract provided.
The Lichen Genus Ramalina In The Gulf South Region Of The United States., Raymond Eugene Jones
The Lichen Genus Ramalina In The Gulf South Region Of The United States., Raymond Eugene Jones
LSU Historical Dissertations and Theses
No abstract provided.
An Analysis Of Contextual Effects On Electoral Behavior., Charles E. Grenier
An Analysis Of Contextual Effects On Electoral Behavior., Charles E. Grenier
LSU Historical Dissertations and Theses
No abstract provided.
Generic Terms In The Place Names Of Louisiana, An Index To The Cultural Landscape., Randall Augustus Detro
Generic Terms In The Place Names Of Louisiana, An Index To The Cultural Landscape., Randall Augustus Detro
LSU Historical Dissertations and Theses
No abstract provided.
An Ecological Study Of The Flora Of East St. Charles Parish, Louisiana., Glen Norman Montz
An Ecological Study Of The Flora Of East St. Charles Parish, Louisiana., Glen Norman Montz
LSU Historical Dissertations and Theses
No abstract provided.
Effects Of Prescribed Burning On The Understory Vegetation In Pine-Hardwood Forests Of Southeastern Louisiana., Hershel Clayton Reeves
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.
Residential Segregation In New Orleans: A Statistical Analysis Of Censusdata., Anthony Victor Margavio
Residential Segregation In New Orleans: A Statistical Analysis Of Censusdata., Anthony Victor Margavio
LSU Historical Dissertations and Theses
No abstract provided.
Ecological Studies Of Certain Natural Mortality Factors Of The Sugarcane Borer, Diatraea Saccharalis (Fabricius) In Louisiana., Ahmed Abdel Ghany Negm
Ecological Studies Of Certain Natural Mortality Factors Of The Sugarcane Borer, Diatraea Saccharalis (Fabricius) In Louisiana., Ahmed Abdel Ghany Negm
LSU Historical Dissertations and Theses
No abstract provided.
A Comparative Ecological Study Of The Grasses And The Geology Of Tangipahoa Parish, Louisiana., Earl Ray Wascom
A Comparative Ecological Study Of The Grasses And The Geology Of Tangipahoa Parish, Louisiana., Earl Ray Wascom
LSU Historical Dissertations and Theses
No abstract provided.
Squirrel Habitat And Population Evaluation On Thistlethwaite Game Management Area In South Central Louisiana, Robert Harley Mills
Squirrel Habitat And Population Evaluation On Thistlethwaite Game Management Area In South Central Louisiana, Robert Harley Mills
LSU Historical Dissertations and Theses
Download full text to view abstract.
The Netsi Kutchin: An Essay In Human Ecology., Frederick Hadleigh-West
The Netsi Kutchin: An Essay In Human Ecology., Frederick Hadleigh-West
LSU Historical Dissertations and Theses
No abstract provided.
An Ecological Study Of The Fall Webworm, Hyphantria Cunea (Drury), In Louisiana., Abe Douglas Oliver Jr
An Ecological Study Of The Fall Webworm, Hyphantria Cunea (Drury), In Louisiana., Abe Douglas Oliver Jr
LSU Historical Dissertations and Theses
No abstract provided.
Digenetic Trematodes In Louisiana Freshwater Fishes., Grover Cleveland Miller
Digenetic Trematodes In Louisiana Freshwater Fishes., Grover Cleveland Miller
LSU Historical Dissertations and Theses
No abstract provided.
Recent Foraminiferal Faunules From The Louisiana Gulf Coast., Harold Veral Andersen
Recent Foraminiferal Faunules From The Louisiana Gulf Coast., Harold Veral Andersen
LSU Historical Dissertations and Theses
No abstract provided.
Some Effects Of Inorganic Salts On The Blood Density And Tissue Fluids Of The Bluegill, Lepomis Macrochirus., Roland Abegg
Some Effects Of Inorganic Salts On The Blood Density And Tissue Fluids Of The Bluegill, Lepomis Macrochirus., Roland Abegg
LSU Historical Dissertations and Theses
No abstract provided.
A Distributional Survey Of The Birds Of Sonora, Mexico, A. J. Van Rossem
A Distributional Survey Of The Birds Of Sonora, Mexico, A. J. Van Rossem
Occasional Papers of the Museum of Natural Science, Louisiana State University
No abstract provided.