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Sjiktningsforhold og vannkvalitet i Svelavatn, Bjerkreim kommune

Authors: Kaste, Ø.;

Sjiktningsforhold og vannkvalitet i Svelavatn, Bjerkreim kommune

Abstract

Vannkjemisk og hygienisk tilstand i Svelavatn, Bjerkreim kommune er undersøkt i løpet av sommerhalvåret 2001. Resultatene viser at innsjøen tidvis er markert påvirket av næringssalter (fosfor og nitrogen) og termostabile koliforme bakterier. Det var store horisontale og vertikale forskjeller i vannkvalitet, noe som gjenspeiler ulik forurensningsbelastning og resipientkapasitet i den østre og vestre delen av innsjøen. Svelavatn lå likevel innenfor grensene for akseptabel fosforbelastning, dersom en legger til grunn eksisterende modellverktøy for fosforbelastning i grunne og middels grunne innsjøer. Den gjenværende resipientkapasiteten i det vestre bassenget ser imidlertid ut til å være relativt liten. Selv om middelverdiene for total fosfor lå innenfor grensen for akseptabel belastning i Svelavatn, ble det tidvis også dokumentert vannkvaliteter som vil være til klar ulempe for andre brukerinteresser knyttet til innsjøen og nærliggende elvestrekninger. Fastsetting av akseptabel vannkvalitet i innsjøen vil derfor være avhengig av hvilke miljømål som knyttes til tilstand og bruk av vassdraget.

Bjerkreim kommune

Årsliste 2001

Country
Norway
Related Organizations
Keywords

recipient, water quality, vassdrag, watercourse, municipal, undersøkelser-ferskvann, kommunalt avløpsvann, surveillance, resipientundersøkelse, vannkvalitet, wastewater, VDP::Matematikk og naturvitenskap: 400

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green