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Analysis Of Response Calls To Diverse Ground Predators From Three Geographically Separate Florida Scrub-Jay (Aphelocoma Coerulescens) Subpopulations, Sarah A. (Bales) Douglass
Analysis Of Response Calls To Diverse Ground Predators From Three Geographically Separate Florida Scrub-Jay (Aphelocoma Coerulescens) Subpopulations, Sarah A. (Bales) Douglass
Master of Environmental Science (MES) Theses
Dialectic variation occurs in many bird species. Different factors have been investigated regarding dialectic variation, including cultural and genetic transmission of songs or calls, and geographic separation. In this study, the predator alarm call of the Florida Scrub-Jay to ground predators was recorded in three geographically separate subpopulations across Florida—Canaveral National Seashore/Merritt Island National Wildlife Refuge, Lyonia Preserve and Leisure Lakes/Lake June in Winter Scrub State Park—to examine any dialectic occurrence between these three subpopulations. Additionally, many bird species are recognized as having highly evolved predator recognition systems, often with different calls for specific predators. The Florida Scrub Jay has …
Geographical Information System Analysis Of Great Blue Heron (Ardea Herodias) Colony Site Selection In Northeastern Indiana, Jason M. Kauffman
Geographical Information System Analysis Of Great Blue Heron (Ardea Herodias) Colony Site Selection In Northeastern Indiana, Jason M. Kauffman
Master of Environmental Science (MES) Theses
Seventeen Great Blue Heron (Ardea herodias) nesting colonies were studied in northeastern Indiana to determine which natural and human variables, within 15 km of each heronry, correlated with the size and location of this bird’s nesting sites. The data collected in the field and with ArcMap, a Geographical Information System program, included: the types and distances to human disturbances and water/foraging sources; wetland size and type; the height, dbh, and species of nesting trees; and the number of active and total nests. This information was used to produce an individual map for each heronry as well as a …