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Life Sciences Commons

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Plant Sciences

Eastern Illinois University

Student Honors Theses

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Full-Text Articles in Life Sciences

Seed Germination And Seed Bank Of Scutellaria Species, Jennifer O'Brien Apr 2013

Seed Germination And Seed Bank Of Scutellaria Species, Jennifer O'Brien

Student Honors Theses

Florida skullcap, Scutellaria floridana Chapm. (Lamiaceae), is a federally threatened species found in the Florida Panhandle. Its habitat is a fire-prone, longleaf pine forest dominated by Aristida stricta Michx. var. beyrichiana (wiregrass). Other Scutellaria species used in the study are found in southeastern U.S., including two within the Florida Panhandle. The objective of this study was to compare several techniques to germinate seeds of Scutellaria incana, Scutellaria lateriflora, Scutellaria ovata ssp. ovata, and Scutellaria floridana, and to access the presence of a seed bank for S. floridana. For the germination study, Scutellaria lateriflora and S. ovata ssp. ovata were stratified …


Edge Influence On Reproductive Success Of Symphoricarpos Orbiculatus, Breanne M. Nott Apr 2008

Edge Influence On Reproductive Success Of Symphoricarpos Orbiculatus, Breanne M. Nott

Student Honors Theses

With continued forest fragmentation, edge effects play an important role in shaping the structure and composition of plant communities. Some forest plant species exhibit increased abundance at forest edges, while other species have a negative edge response. Despite welldocumented edge effects, there are few studies that document the underlying effects on population dynamics of individual species that result in edge responses. Two mechanisms may generate differential distribution of a species across an edge. Edges may 1) alter population demographics by influencing the plant’s uptake and allocation of resources, or may 2) influence the spatial pattern of seed dispersal. Coral berry …