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Full-Text Articles in Life Sciences
Hiding In Plain Sight: Accounting For Rate Heterogeneity In Trait Evolution Models, James Boyko
Hiding In Plain Sight: Accounting For Rate Heterogeneity In Trait Evolution Models, James Boyko
Graduate Theses and Dissertations
Within the last four decades, phylogenetic comparative methods have become the defacto method of analysis for comparative biologists. The availability of high-quality comparative datasets has been matched by an explosion of possible phylogenetic models. In large part, the efforts to increase the realism of phylogenetic comparative methods has been successful as evidenced by their widespread use. To this extensive literature, my contributions are modest. I have focused my dissertation work on two main themes. First, most phenotypic evolution is not independent of other phenotypes. Changes in a particular character may influence changes in another and modeling these characters in isolation …
Investigating The Mechanics And Chemistry Of Sickle Polish Development, Justin Jared Dubois
Investigating The Mechanics And Chemistry Of Sickle Polish Development, Justin Jared Dubois
Graduate Theses and Dissertations
This series of experiments is designed to understand the development and chemistry of sickle gloss. Sickles are common in the archaeological record and have long been studied for their eponymous “sickle gloss”. There is debate as to how this gloss is formed. Five experimental sickles containing flint and novaculite blades were used to harvest high and low moisture content rye and common fescue and associated field weeds. The differences in the development of sickle gloss were examined. High moisture content plants create thick, smooth fields of polish with undulating, billowing margins at a higher developmental speed. Low moisture content plants …