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dc.contributor.advisorLynghammar, Arve
dc.contributor.authorMikalsen, Simeon Jonatan
dc.date.accessioned2020-08-21T11:26:36Z
dc.date.available2020-08-21T11:26:36Z
dc.date.issued2020-05-15
dc.description.abstractIn order to estimate biodiversity or do species counts, detramental techniques such as trawling or longlining have been used. Lately techniques used to monitor, such as baited remote underwater video systems and environmental DNA have been tested as possible methods to investigate species richness and abundance, the latter which will be used in this thesis. Using eDNA methodology, a northern Norwegian fjord was investigated in order to detect the species richness throughout a year at two depths. In addition, an attempt was made to explain the variation of eDNA reads by correlating it to biotic and abiotic factors. The fjord showed presence of 40 different taxonomical units (MOTUs). The fish community were unevenly distributed, where a few MOTUs (Pollachius virens, Hippoglossus sp., Gadus morhua, Salmo salar, and Molva molva) were present most dates in both depths throughout the year. On contrast 19 MOTUs were present one to three times throughout the year, where 12 MOTUs were detected only once. The spring season contained more species and higher numbers of eDNA than the rest of the year. This might have been as animals gathered in order to predate upon either spawning Gadus morhua, their eggs, or to graze on the increased primary production during this period. The 20m samples and 350m samples were more similar during the spring turnover period, but it is hard to say if this is a factor of turnover, as high numbers of reads were also associated with this period indicating a higher amount of biomass in total. The use of eDNA succeeded in providing a picture of the Vågsfjorden biodiversity. For very numerous animals the method was applicable to associate with biological traits, but not for rarer animals.en_US
dc.identifier.urihttps://hdl.handle.net/10037/19094
dc.language.isoengen_US
dc.publisherUiT Norges arktiske universiteten_US
dc.publisherUiT The Arctic University of Norwayen_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)
dc.rights.urihttps://creativecommons.org/licenses/by-nc-sa/4.0en_US
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)en_US
dc.subject.courseIDBIO-3950
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488en_US
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497en_US
dc.subjecteDNAen_US
dc.subjectVågsfjordenen_US
dc.subjectBiodiversityen_US
dc.subjectSpecies richnessen_US
dc.titleAddressing the aquatic vertebrate community of Vågsfjorden 2019 with the use of Environmental DNAen_US
dc.typeMaster thesisen_US
dc.typeMastergradsoppgaveen_US


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Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)