Type of Document Master's Thesis Author Couvillion, Brady Randall Author's Email Address email@example.com URN etd-07152005-093546 Title Spatial Heterogeneity in Forested Landscapes: An Examination of Forest Fragmentation and Suburban Sprawl in the Florida Parishes of Louisiana Degree Master of Science (M.S.) Department Geography & Anthropology Advisory Committee
Advisor Name Title Anthony Lewis Committee Chair Elijah Ramsey Committee Member Micheal Leitner Committee Member Keywords
- forest fragmentation
- suburban sprawl
Date of Defense 2005-06-17 Availability unrestricted AbstractForest fragmentation refers to the spatial distribution of forests in a landscape. Forest fragmentation drastically alters forest composition, habitat quality, genetic flow and many other ecological processes associated with forested ecosystems. This research examined spatial patterns and rates of forest fragmentation during the 1991-2001 period for a region in southeast Louisiana known as the "Florida Parishes."
Following classification of 1991 and 2001 Landsat data into forest and non-forest classes, spatial patterns were examined using Fragstats 3.3 spatial analysis software. Spatial statistics such as patch density, perimeter to area ratios, core area indices, edge density, and various landscape continuity indices were used to assess patterns and trends of forest fragmentation in landscapes throughout the region. A variety of patch, core and edge metrics indicated increasing forest fragmentation in a majority of the landscapes examined. Values of various landscape continuity indices were also found to suggest significant increases in forest fragmentation in a majority of landscapes.
The correlation of various forest fragmentation metrics with metrics associated with suburban sprawl was shown to be relatively weak by low R2 values. These findings may suggest that suburban sprawl was not the only factor affecting the spatial arrangement of forests in the Florida Parishes during the study period. The results of this research facilitate an increased understanding of the current trends of forest land-cover fragmentation in the Florida Parishes and the potential influences of these trends on related ecological processes.
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