Two-dimensional aquatic habitat quality modelling

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Lahti, Markku
dc.date.accessioned 2012-08-23T05:35:29Z
dc.date.available 2012-08-23T05:35:29Z
dc.date.issued 2009
dc.identifier.isbn 978-952-248-027-9
dc.identifier.isbn 978-952-248-026-2 (printed) #8195;
dc.identifier.issn 1795-4584
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/4647
dc.description.abstract Two-dimensional modelling of aquatic habitats of different organisms was developed, analysed and validated. The habitats and abundance of salmon, brown trout, grayling, pikeperch, stone loach, bullhead, crayfish and Persicaria Foliosa were modelled. In fish habitat modelling, two-dimensional hydraulic modelling was used, where wind induced potential lake bed erosion was calculated for crayfish. Models were calibrated with many types of biological material and tested. The effect of different methods of using biological information and of carrying out field measurements and hydraulic modelling were analysed. The selection of habitat preference curves and the density of field measurements were found to have the greatest effect on results. The models for salmonids and Persicaria Foliosa were found out to work consistently in sensitivity tests. The model was validated against observed habitat use. With the models, abundance of salmonids and Persicaria Foliosa could be predicted. Transferability of the habitat model of crayfish to different types of lakes must be further developed and confirmed. Two-dimensional habitat models were found to work consistently if appropriately applied and used, in prediction of abundance of organisms despite a large natural variability and dynamics of habitat selection and the difficulty to accurately observe habitat selection making the validation of habitat models difficult. en
dc.format.extent Verkkokirja (15724 KB, 279 s.)
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Teknillinen korkeakoulu en
dc.relation.ispartofseries TKK dissertations, 177 en
dc.subject.other Environmental science en
dc.title Two-dimensional aquatic habitat quality modelling en
dc.type G4 Monografiaväitöskirja fi
dc.contributor.department Yhdyskunta- ja ympäristötekniikan laitos fi
dc.subject.keyword habitat en
dc.subject.keyword watershed en
dc.identifier.urn URN:ISBN:978-952-248-027-9
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (monografia) fi
dc.type.ontasot Doctoral dissertation (monograph) en


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