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dc.contributor.authorKroglund, F.nb_NO
dc.contributor.authorWright, R.nb_NO
dc.contributor.authorBurchart, C.nb_NO
dc.contributor.otherWright, R. - Project managernb_NO
dc.coverage.spatialNorgenb_NO
dc.date.accessioned2014-08-01T10:47:01Z
dc.date.available2014-08-01T10:47:01Z
dc.date.issued2002nb_NO
dc.identifier4501nb_NO
dc.identifier.isbn82-577-4151-5nb_NO
dc.identifier.issn1894-7948nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/211618
dc.descriptionÅrsliste 2002nb_NO
dc.description.abstractAn analysis of water chemistry and salmon population status based on data for 1993-94 shows that of 73 salmon rivers in Norway, 23 have extinct populations and an additional 22 have affected populations. Acidification is one of several causes of damage to salmon populations. The extinct rivers have ANC below about 0 µeq L-1, whereas the unaffected rivers have ANC above about 25 µeq L-1. Salmon catch statistics from the late 1800's to the present indicate declining populations in many rivers, especially those on the south coast. Historical ANC reconstructed by application of the MAGIC model in 6 rivers indicates declining ANC (acidification) to levels potentially damaging to salmon. Of the rivers tested, only in Tovdal river do the salmon catch statistics and reconstructed ANC give a consistent clear-cut picture. The data indicate that the critical limit for salmon in Norway is about 30 µeq L-1. This limit is compatible with data from laboratory and field experiments with salmon. Setting this as a limit does not necessitate revision of the critical load maps for Norway, which are based on critical limit for brown trout.nb_NO
dc.description.sponsorshipDirektoratet for naturforvaltning (DN)nb_NO
dc.publisherNorsk institutt for vannforskningnb_NO
dc.relation.ispartofseriesNIVA-rapport;4501nb_NO
dc.rightsNavngivelse-IkkeKommersiell-DelPåSammeVilkår 3.0 Norgenb_NO
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/no/nb_NO
dc.subjectmiljøgifter og forsuringnb_NO
dc.titleAcidification and Atlantic salmon critical limits for Norwegian riversnb_NO
dc.typeResearch reportnb_NO
dc.rights.holderNorsk institutt for vannforskning/Norwegian institute for water researchnb_NO
dc.subject.nsiVDP::Matematikk og naturvitenskap: 400nb_NO
dc.source.pagenumber61nb_NO
dc.subject.keywordlaksnb_NO
dc.subject.keywordforsuringnb_NO
dc.subject.keywordtålegrensernb_NO
dc.subject.keywordelvernb_NO
dc.subject.keywordsalmonnb_NO
dc.subject.keywordacidificationnb_NO
dc.subject.keywordcriticalnb_NO
dc.subject.keywordloadsnb_NO
dc.subject.keywordriversnb_NO
dc.relation.projectO-20191nb_NO


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