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A comparison of phenolic levels in Populus tremuloides across four ecosystems.

dc.contributor.authorEmerson, Adamen_US
dc.contributor.authorFinkbeiner, Drewen_US
dc.contributor.authorJerome, J. P.en_US
dc.coverage.spatialUMBS Stationen_US
dc.date.accessioned2007-06-14T23:27:23Z
dc.date.available2007-06-14T23:27:23Z
dc.date.issued2004en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/55012
dc.description.abstractThe coevolution between plants and herbivores has produced a wide range of secondary metabolite defense adaptations in plants, one of the largest groups being phenolics. The carbon-nutrient balance hypothesis states that when the C:N ratio is high within a plant, more carbon-based secondary metabolites are created. Also, if C:N is low more primary metabolites are synthesized. We speculated that soil moisture would have an affect on C:N and thus secondary metabolite levels. We studied the differences in phenolic levels of the Populus tremuloides in four distinct ecosystems: swamp, moraine, high outwash plain, and low outwash plain. We found a significant difference between the constitutive phenolic levels of the samples from the four ecosystems (Kruskal-Wallis Statistic = 9.179, p = .027). Specifically, the high and low outwash and the moraine and low outwash were significantly different (p = .028 and p = .007 respectively) with the low outwash have the lowest amount of phenolics. We speculate this is due to lower soil moisture content in the low outwash plain, but other factos may also have had an effect. If soil moisture does have an affect on C:N and phenolic levels there are obvious consequences due to climate change from global warming.en_US
dc.format.extent434767 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.classificationAspenen_US
dc.subject.classificationSwamp-Rich Coniferen_US
dc.subject.otherVASCULARen_US
dc.subject.otherPLANTSen_US
dc.subject.otherFORESTen_US
dc.subject.otherTREESen_US
dc.subject.otherHERBIVORYen_US
dc.subject.otherDEFENSEen_US
dc.subject.otherCHEMICALen_US
dc.subject.otherRESOURCESen_US
dc.subject.otherALLOCATIONen_US
dc.subject.otherCARBONen_US
dc.subject.otherNITROGENen_US
dc.subject.otherSOILen_US
dc.subject.otherWATERen_US
dc.subject.otherMOISTUREen_US
dc.titleA comparison of phenolic levels in Populus tremuloides across four ecosystems.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/2027.42/55012/1/3453.pdfen_US
dc.description.filedescriptionDescription of 3453.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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