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Full-Text Articles in Life Sciences
Composition And Structure Of Replacement Forest Stands Following Southern Pine Beetle Infestations As Related To Selected Site Variables In The Great Smoky Mountains, Nathaniel White Kuykendall Iii
Composition And Structure Of Replacement Forest Stands Following Southern Pine Beetle Infestations As Related To Selected Site Variables In The Great Smoky Mountains, Nathaniel White Kuykendall Iii
Masters Theses
Stand composition and eleven site factors were sampled in 49 stands in the Great Smoky Mountains in which the pine overstory had been killed by the southern pine beetle. Replacement community types were determined using cluster analysis of relative densities for 21 common species. absolute densities for total stems, total pine, total oak, and eight individual species in the overstory, understory, and reproduction strata were related to selected site and vegetation variables by correlation and stepwise multiple regression.
Infestations greatly reduced the importance of pine in all replacement stands, converting most pine dominated stands to mixed pine-hardwood. Pine reproduction was …
Mammalian Succession On Lake Michigan Sand Dunes, John M. Olson
Mammalian Succession On Lake Michigan Sand Dunes, John M. Olson
Masters Theses
No abstract provided.
Are Pollinators Exerting Selection Pressure On The Azalea Hybrids On Gregory Bald?, Clinton Victor Kellner
Are Pollinators Exerting Selection Pressure On The Azalea Hybrids On Gregory Bald?, Clinton Victor Kellner
Masters Theses
Gregory Bald is renowned for an azalea hybrid swarm which contains a very diverse array of flower colors and forms. This report involves the study of the flower constancy of the pollinators to the different azalea flower types. The flower type classification is based on the floral morphology, color and presence of odor. The azalea species involved in the hybrid swarm are Rhododendron bakeri (Lemon and McKay) Hume, R. aborescens (Pursh) Torrey and R. viscosum (L.) Torrey. Pollinators' constancy to flower type and pollinators' preference for flower type were observed on square plots that contained two or more flower types. …
A Study Of Symbiosis Involving The Fish-Eating Bat (Myotis Vivesi), The Least Petrel (Halocyptera Microsoma), The Black Petrel (Oceanodroma Melania), And The Lizard (Cnemidophorus Tigris), Joel King
Masters Theses
A field study was conducted on Partida Island in the Gulf of Mexico on the dates May 26 through July 26, 1977, inclusive.
Field observations were made of the lizard (Cnemidophorus tigris) preying on eggs and hatchlings of the least petrel (Halocyptena microsoma), and the black petrel (Oceanodroma melania). The petrels roost among rock slides with the fish-eating bat (Myotis vivesi).
In 24 trials of experimental boxes with lizards, bats, and petrels as subjects, 16 trials resulted in aggression of bats to lizards.
A symbiosis is postulated between bats and petrels.
Interactions In Lambdoid Bacteriophage Populations, Bruce Edward Mitchell
Interactions In Lambdoid Bacteriophage Populations, Bruce Edward Mitchell
Masters Theses
The lambdoid bacteriophages are ideal subjects for the study of populational interactions at the molecular level because they do not mutually exclude one another in mixed infection of the same host cell. Previous work done in this laboratory using the lambdoid phage pairs λ-434 hy mi and λ-∅80 have demonstrated a density-dependent reduction in progeny yield per infected cell (burst size) as a function of increasing multiplicity of infection (m.o.i.). The λ cI gene which codes for the repress or molecule has been demonstrated to be the cause of the interaction in the λ-434 hy mi phage pair. …