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dc.contributor.authorLin,Tiffany S.en_US
dc.coverage.spatialWilderness State Parken_US
dc.coverage.spatialWaugoshance Pointen_US
dc.coverage.spatialSturgeon Bay Dunesen_US
dc.coverage.spatialCross Village Areaen_US
dc.coverage.spatialGrand Sable Dunesen_US
dc.coverage.spatialPictured Rocks Nat. Lakeshoreen_US
dc.date.accessioned2007-06-14T22:41:01Z
dc.date.available2007-06-14T22:41:01Z
dc.date.issued1996en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/54677
dc.description.abstractSeed production is important for maintaining population size of species with limited vegetative reproduction. My focus of the study was on the effect of damage to apical meristem during vegetative stages on reproductive output of Cirsium pitcheri, a threatened species endemic to the Great Lakes. Plants that had suffered from apical meristem damage were identified as multistemmed individuals. Probability of flowering as a function of plant size was examined by comparing of flowering and non-flowering adults. Reproductive output was estimated using the average number and the total diameter of flowering heads per plant. The vegetative characteristic best predicted the size of flowering plants was identified, and size difference was eliminated in the analyses that compared reproductive outputs between damaged and undamaged plants. Total seed set and percent seed set in relation to the size of capitulum also was compared between damaged and undamaged plants. Probability of flowering was confirmed to be size-dependent, and taproot diameter was the best size predictor for flowering plants. Total head number and total head diameter produced per plant was not significantly different between damaged and undamaged plants at all four sites in northern Michigan. While total seed set and percent seed set increased proportionally as head size increased, this relationship did not differ significantly between damaged and undamaged plants. Therefore, damage to apical meristem has no negative or positive effect on the reproductive output of Cirsium pitcheri.en_US
dc.format.extent466836 bytes
dc.format.extent3144 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.relation.haspartGraphen_US
dc.relation.haspartTable of Numbersen_US
dc.subjectUndergraduate Research Exper.en_US
dc.subject.classificationDunesen_US
dc.subject.otherVASCULARen_US
dc.subject.otherPLANTSen_US
dc.subject.otherCIRSIUMen_US
dc.subject.otherCOMPOSITAEen_US
dc.subject.otherREPRODUCTIVEen_US
dc.subject.otherOUTPUTen_US
dc.subject.otherSEXUALen_US
dc.subject.otherSEEDen_US
dc.subject.otherHERBIVORYen_US
dc.subject.otherGROWTHen_US
dc.subject.otherTHREATENEDen_US
dc.subject.otherENDANGEREDen_US
dc.titleReproductive ecology of a Great Lakes endemic, Cirsium pitcheri.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/2027.42/54677/1/3117.pdfen_US
dc.description.filedescriptionDescription of 3117.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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