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dc.contributor.authorSalmelin, Johanna
dc.date.accessioned2015-11-24T10:51:38Z
dc.date.available2015-11-24T10:51:38Z
dc.date.issued2015
dc.identifier.isbn978-951-39-6416-0
dc.identifier.otheroai:jykdok.linneanet.fi:1504511
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/47800
dc.descriptionArtikkeliväitöskirja. Yhteenveto-osa ja viisi artikkelia. (Artikkelit eivät avoimesti saatavilla.)fi
dc.descriptionArticle dissertation. An introduction and five articles (not available in this version).eng
dc.description.abstractBenthic animals in aquatic ecosystems suffer from various anthropogenic pollutants. A challenge in risk assessment of chemicals in aquatic ecosystems (i.e. ecological risk assessment) has been to balance cost-efficiency and effectiveness in detecting early warning signals of chemicals. In this study, hyperspectral imaging and behavioural measurements were evaluated as novel applications for detecting chemical effects on benthic animals, and the reliability of the incidence of chironomid morphological deformities as a more traditional bioindicator of sediment ecotoxicity was assessed. Chironomid deformity experts (25) analysed an identical set of samples for deformities. Deformity assessments were highly subjective and inconsistent. Apparently, guidelines and criteria are needed to improve and ascertain the reliability of deformity analysis. Hyperspectral imaging was tested as a novel method to detect metal contamination of benthic macroinvertebrates using cadmium (Cd) as a model metal. No effects of Cd were observed on traditional toxicity endpoints, survival and number of morphological gill abnormalities in caddisfly larvae. In contrast, hyperspectral features revealed a weak association with Cd concentration indicating darkening of larval soft tissues at high Cd. Further development and testing of this method and of the imaging process in particular, are needed. Another novel method was based on a quadrupole impedance conversion-technique to record behavioural responses of animals. A Multispecies Freshwater Biomonitor (MFB), which utilizes this technique, enabled quantitative behavioural measurements of benthic larvae in sediment and in situ stream water exposures. MFB was found applicable for recording different behaviours, locomotion and ventilation of chironomid, mayfly and lamprey larvae, although no consistent behavioural responses in contaminated sediments or mine-impacted streams were detected.
dc.format.extent1 verkkoaineisto (41 sivua)
dc.language.isoeng
dc.publisherUniversity of Jyväskylä
dc.relation.ispartofseriesJyväskylä studies in biological and environmental science
dc.relation.isversionofJulkaistu myös painettuna.
dc.subject.otherbehaviour
dc.subject.otherbenthic macroinvertebrates
dc.subject.otherhyperspectral imaging
dc.subject.otherinterrater reliability
dc.subject.othermorphological deformities
dc.titleNew applications of zoobenthos measurements for risk assessment of chemicals in aquatic ecosystems
dc.typeDiss.fi
dc.identifier.urnURN:ISBN:978-951-39-6416-0
dc.type.dcmitypeTexten
dc.type.ontasotVäitöskirjafi
dc.type.ontasotDoctoral dissertationen
dc.contributor.tiedekuntaMatemaattis-luonnontieteellinen tiedekuntafi
dc.contributor.tiedekuntaFaculty of Mathematics and Scienceen
dc.contributor.yliopistoUniversity of Jyväskyläen
dc.contributor.yliopistoJyväskylän yliopistofi
dc.contributor.oppiaineAkvaattiset tieteetfi
dc.relation.issn1456-9701
dc.relation.numberinseries309
dc.rights.accesslevelopenAccessfi
dc.subject.ysopohjaeläimistö
dc.subject.ysovesieläimistö
dc.subject.ysovesiekosysteemit
dc.subject.ysoympäristön tila
dc.subject.ysobioindikaattorit
dc.subject.ysoympäristön saastuminen
dc.subject.ysovesien saastuminen
dc.subject.ysokemikaalit
dc.subject.ysoraskasmetallit
dc.subject.ysohaitalliset aineet
dc.subject.ysovesistövaikutukset
dc.subject.ysoarviointi
dc.subject.ysoriskinarviointi
dc.subject.ysoympäristövaikutukset
dc.subject.ysoympäristöhaitat
dc.subject.ysoympäristövaikutusten arviointi
dc.subject.ysoepämuodostumat
dc.subject.ysomittausmenetelmät
dc.subject.ysospektrikuvaus
dc.subject.ysokadmium
dc.subject.ysoeläinten käyttäytyminen


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