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A Raster-Based Gis Analysis Of The Cumulative Impacts Of Humans And Beaver On Wetland Area And Types In The Chickahominy River Watershed (Virginia, Usa) From 1953 To 1994, Alexandra Dunya Syphard
A Raster-Based Gis Analysis Of The Cumulative Impacts Of Humans And Beaver On Wetland Area And Types In The Chickahominy River Watershed (Virginia, Usa) From 1953 To 1994, Alexandra Dunya Syphard
Theses and Dissertations
Despite increased recognition of wetland functions and values, wetland loss and degradation continues in the United States. Digital wetlands and uplands coverages were analyzed to compare the cumulative impacts of humans and beaver (Castor canadensis) on wetland types in the Chickahominy River watershed (Virginia, USA) from 1953 to 1994. A vector-based approach was used for data manipulation, and a raster-based approach was chosen to analyze geographic change over time. Study findings indicated that anthropogenic activities were responsible for both wetland loss and gain in the watershed, and beavers substantially influenced shifting between wetland types. Wetland area increased 4% over 41 …