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COMPETITION BETWEEN HYDRILLA VERTICILLATA AND VALLISNERIA AMERICANA IN AN OBSERVATIONAL FIELD STUDY AND GREENHOUSE EXPERIMENT.

dc.contributor.advisorEngelhardt, Katharinaen_US
dc.contributor.authorMcChesney, Lauren Daltonen_US
dc.date.accessioned2011-07-06T05:32:54Z
dc.date.available2011-07-06T05:32:54Z
dc.date.issued2010en_US
dc.identifier.urihttp://hdl.handle.net/1903/11432
dc.description.abstractInvasive species continue to have a pervasive influence on biodiversity but it is often unclear how invasive species affect native species. In field observations and greenhouse experiments, I examined the effect of the non-native submersed aquatic plant Hydrilla verticillata on the native species Vallisneria americana. Field monitoring from 2002 to 2006 showed that coverage of species peaked in 2004 after initial invasion of the estuarine study system in 2002. Substrate characteristics did not limit species distribution. In contrast, substrate and planting density affected plant growth and the outcome of intra- and inter-specific competition in the greenhouse. Although other environmental variables, such as water depth and turbidity, appear to override the effect of substrate in the field, the greenhouse experiment suggests that substrate can be an important driver of submersed aquatic plant community dynamics. Sediment characteristics should therefore be a factor in restoration design and the management of invasive species.en_US
dc.titleCOMPETITION BETWEEN HYDRILLA VERTICILLATA AND VALLISNERIA AMERICANA IN AN OBSERVATIONAL FIELD STUDY AND GREENHOUSE EXPERIMENT.en_US
dc.typeThesisen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentMarine-Estuarine-Environmental Sciencesen_US
dc.subject.pqcontrolledEnvironmental Sciencesen_US
dc.subject.pqcontrolledEnvironmental managementen_US
dc.subject.pqcontrolledPlant Biologyen_US
dc.subject.pquncontrolledcompetitionen_US
dc.subject.pquncontrolledHydrilla verticillataen_US
dc.subject.pquncontrolledinvasiveen_US
dc.subject.pquncontrolledOtter Point Creeken_US
dc.subject.pquncontrolledsubmersed aquatic vegetationen_US
dc.subject.pquncontrolledVallisneria americanaen_US


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