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Effects Of Fire On Habitat Associations, Abundance, And Survival Of Wintering Henslow's Sparrows (Ammodramus Henslowii) In Southeastern Louisiana Longleaf Pine Savannas, Erik Ivan Johnson
Effects Of Fire On Habitat Associations, Abundance, And Survival Of Wintering Henslow's Sparrows (Ammodramus Henslowii) In Southeastern Louisiana Longleaf Pine Savannas, Erik Ivan Johnson
LSU Master's Theses
The Henslow’s Sparrow (Ammodramus henslowii) is the fastest declining short-distance migrant and fastest declining grassland bird in North America. Declines in longleaf pine (Pinus palustris) savannas, its primary wintering habitat, have exceeded 97%. Other than basic habitat requirements, very little is known about its wintering ecology. I examined habitat associations of wintering Henslow’s Sparrows resulting from fire in longleaf pine savannas in southeastern Louisiana during two winters. Because it is important to understand the relative importance of habitat parameters, which include structure, species composition, and food availability, I measured these to determine their relative importance to Henslow’s Sparrow densities. I …
Burn Scar Mapping In The Sabine National Wildlife Refuge Using Landsat Tm And Etm+ Imagery, Chris Pennington
Burn Scar Mapping In The Sabine National Wildlife Refuge Using Landsat Tm And Etm+ Imagery, Chris Pennington
LSU Master's Theses
Marsh fires burn on a regular basis on the Southwestern Louisiana Coast from both natural and anthropogenic ignitions. Remote sensing based studies of these fires are scarce. Several burn scar mapping techniques have been developed and implemented for study of forest fires in the American West but have not been applied to marsh fires. Erdas Imagine and ArcGIS Software was used to process Landsat imagery of the Sabine National Wildlife Refuge in accordance with the most commonly used burn scar mapping spectral indices and tested for accuracy against manually digitized burn scar maps. Indices tested included the Normalize Burn Ratio …
Effects Of Silvicultural Techniques And Landscape Management On Habitat Quality And Relative Abundance For Northern Bobwhites In A Pine Plantation Forest, Jason Douglas Burke
Effects Of Silvicultural Techniques And Landscape Management On Habitat Quality And Relative Abundance For Northern Bobwhites In A Pine Plantation Forest, Jason Douglas Burke
LSU Master's Theses
Pine plantation forests are increasing in scope across the southeastern United States, particularly Louisiana. These areas provide poor quality bobwhite brood-rearing habitats, and become increasingly degraded without periodic disturbance. Poor quality habitat conditions at a landscape-level scale usually results in reduced fall bobwhite body weights, creating low survival rates. We researched 4 understory vegetation management techniques (ie. mowing, no treatment, burn only, and imazapyr with burning) within pine plantations to evaluate their effects on vegetation composition and structure and on arthropod abundance and availability relative to bobwhite brooding habitat in 2002-2005. We used 1,155 human-imprinted bobwhite chicks to estimate foraging …