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dc.contributor.authorShah, Nishaen_US
dc.date.accessioned2007-06-14T23:19:31Z
dc.date.available2007-06-14T23:19:31Z
dc.date.issued2001en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/54955
dc.description.abstractNon-native invasive plants species originating from Europe and Asia have become a problem in the northern latitudes of North America as they are aggressively taking over natural habitats, and in turn reducing species diversity. Purple loosestrife, Lythrum salicaria (Lythraceae), is an example of an invasive plant that is devastating the wetland regions of southeastern North America. This study is designed to look at the abiotic (soil type and soil moisture) and biotic factors (morph frequency, herbivory, number inflorescences per stem, number of non-flowering stems, number of seedlings, and plant height) in high and low invasion levels in in differeing population densities. Results showed that L. salicaria was most dense in high invasion sites and damp and organic soil types. Also, plants on average grew taller in more saturated soils. There were weak correlations between population density and the proportion of seedlings per square meter, and between population density the proportion of plants with herbivory per square meter. There was no correlation between population density and plant height. Morph frequencies followed a 1:1:1 ratio in two of the high invasion sites, two of the low invasion sites, and at the total low invasion level. Same morph pair frequencies were higher than the expected frequency of 1/3, showing that more asexual, than sexual reproduction is occurring than expected. With this data much more was known about factors that stimulate and hinder population growth of L. salicaria, and how it reproduces in each level of invasion.en_US
dc.format.extent1520657 bytes
dc.format.extent3144 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.relation.haspartGraphen_US
dc.relation.haspartTable of Numbersen_US
dc.subjectGeneral Ecologyen_US
dc.subject.otherAQUATICen_US
dc.subject.otherVASCULARen_US
dc.subject.otherPLANTSen_US
dc.subject.otherEXOTICen_US
dc.subject.otherINTRODUCEDen_US
dc.subject.otherSPECIESen_US
dc.subject.otherLIFEen_US
dc.subject.otherHISTORYen_US
dc.subject.otherBREEDINGen_US
dc.subject.otherBIOLOGYen_US
dc.subject.otherDIVERSITYen_US
dc.titleA study of the biotic and abiotic factors that affect the proliferation of Lythmus salicaria in differing levels of invasion and population density.en_US
dc.typeWorking Paperen_US
dc.subject.hlbsecondlevelNatural Resource and Environmenten_US
dc.subject.hlbtoplevelScienceen_US
dc.contributor.affiliationumBiological Station, University of Michiganen_US
dc.contributor.affiliationumcampusAnn Arboren_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/54955/1/3396.pdfen_US
dc.description.filedescriptionDescription of 3396.pdf : Access restricted to on-site users at the U-M Biological Station.en_US
dc.owningcollnameBiological Station, University of Michigan (UMBS)


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