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dc.contributor.authorBliss, Kristin Maysen
dc.date.accessioned2014-03-14T20:19:15Zen
dc.date.available2014-03-14T20:19:15Zen
dc.date.issued2001-10-05en
dc.identifier.otheretd-11272001-135456en
dc.identifier.urihttp://hdl.handle.net/10919/29755en
dc.description.abstractRelationships between nutrient heterogeneity, root foraging behavior and short-term competitive interactions were investigated for six species native to southeastern USA. Monoculture, two- and six-species garden plots were established and fertilized to create spatially homogeneous or heterogeneous nutrient conditions. After 3.5 months, root proliferation in rich patches (precision) and aboveground biomass response to heterogeneity were assessed in monocultures, and competitive outcomes (aboveground biomass) were determined from mixed-species plots. In monoculture plots, two species were relatively precise foragers, but no species showed significant aboveground biomass response to nutrient treatment. Correlations between precision and aboveground biomass were weak (-0.40 < r < 0.17). In two-species plots, interspecific competition was influenced by soil heterogeneity in two of six cases tested (P < 0.05), and precision was the behavior most correlated with competitive success. In six-species plots, spatial pattern of nutrients had no influence on aboveground growth or competition. Results suggest that heterogeneity influences competition, but the influence is context-specific and generally small. Precision may be the foraging behavior that most influences interspecific interactions.en
dc.publisherVirginia Techen
dc.relation.haspartdissertation.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectroot foragingen
dc.subjectnutrient heterogeneityen
dc.subjectplant competitionen
dc.subjectcoastal plain speciesen
dc.titleImpact of nutrient heterogeneity on plant response and competition in Coastal plain speciesen
dc.typeDissertationen
dc.contributor.departmentBiologyen
dc.description.degreePh. D.en
thesis.degree.namePh. D.en
thesis.degree.leveldoctoralen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.disciplineBiologyen
dc.contributor.committeechairJones, Robert H.en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11272001-135456/en
dc.date.sdate2001-11-27en
dc.date.rdate2002-12-03en
dc.date.adate2001-12-03en


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