Document Type



Master of Science (MS)



First Advisor's Name

James W. Fourqurean

First Advisor's Committee Title

Committee Chair

Second Advisor's Name

Daniel L. Childers

Third Advisor's Name

Steven Miller

Date of Defense



Though often suggested in seagrass literature, interactions between abundant rhizophytic macroalgae and coexisting tropical seagrasses have not been directly examined. Based on a competitive interaction hypothesis, I first tested for negative correlations between species densities over large and small spatial scales. After finding negative correlations, I tested experimentally for a competitive interaction by manipulating the relative densities of the locally dominant seagrass and a representative macroalga. Based on significant growth responses to density manipulations, I demonstrated that these species are likely competing for some limiting resource, possibly nitrogen. This study contributes to a better understanding of processes that dictate community composition in these systems.



Included in

Biology Commons



Rights Statement

Rights Statement

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