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dc.contributor.advisorBråthen, Kari Anne
dc.contributor.authorFodstad, Cathrine Helene
dc.date.accessioned2008-10-06T08:52:20Z
dc.date.available2008-10-06T08:52:20Z
dc.date.issued2008-05-15
dc.description.abstractEmpetrum hermaphroditum is one of the dominant species in many reindeer summer grazing areas in Northern Norway, forming unproductive, late successional stable vegetation covers. As studies of amount, and effect of, plant secondary metabolites emerging from E. hermaphroditum indicates strong inhibitory effect on other organisms, it is considered an invasive and allelopathic species. To investigate the effect of two potential ecological disturbances that can cause switch in vegetation cover from unproductive Empetrum domination to a more productive herbaceous plant dominated ecosystem, we compared soil pH and growth of Avenella flexuosa and Solidago virgaurea in heat treated, reindeer faeces fertilized and untreated humus obtained from E. hermaphroditum dominated areas. Measures of total plant biomass differed significantly both between treatments and between species, with all treatments having significantly different effects. Largest level of plant dry weight and pH was measured in fertilized humus, medium level in burned humus and the lowest level where obtained in untreated humus. Results indicate that heat treatment and addition of fertilizer to Empetrum humus improved growing conditions, by elevating pH or nutrient levels and likely omitting allelopathic effects of E. hermaphroditum.en
dc.format.extent951410 bytes
dc.format.extent2071 bytes
dc.format.mimetypeapplication/pdf
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dc.identifier.urihttps://hdl.handle.net/10037/1635
dc.identifier.urnURN:NBN:no-uit_munin_1384
dc.language.isoengen
dc.publisherUniversitetet i Tromsøen
dc.publisherUniversity of Tromsøen
dc.rights.accessRightsopenAccess
dc.rights.holderCopyright 2008 The Author(s)
dc.subject.courseIDNAB-3900nor
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488en
dc.subjectdwarf shrubsen
dc.subjectprescribed burningen
dc.subjectgrazing managementen
dc.subjectFinnmarken
dc.subjectnorthern ecosystemsen
dc.subjectphenolic compoundsen
dc.subjectbatatasin-IIIen
dc.subjectecological disturbancesen
dc.subjectsoil nutrientsen
dc.subjectallelopathyen
dc.subjectEmpetrum hermaphroditumen
dc.subjectAvenella flexuosaen
dc.subjectSolidago virgaureaen
dc.subjecthumusen
dc.subjectorganic fertilizeren
dc.subjectheat treatmenten
dc.subjectpHen
dc.titleReindeer faeces and burning alleviates allelopathic effects of Empetrum humus on local plantsen
dc.typeMaster thesisen
dc.typeMastergradsoppgaveen


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