dc.contributor.author | Hesthagen, Trygve H. | |
dc.contributor.author | Saksgård, Randi J. | |
dc.date.accessioned | 2018-11-15T11:05:27Z | |
dc.date.available | 2018-11-15T11:05:27Z | |
dc.date.created | 2018-09-26T12:15:04Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Fauna Norvegica. 2018, 38 30-36. | nb_NO |
dc.identifier.issn | 1502-4873 | |
dc.identifier.uri | http://hdl.handle.net/11250/2572979 | |
dc.description.abstract | Arctic charr in Rondvatn, a formerly highly acidified mountain lake in southern Norway, was re-established through stocking. The population became extinct during the early 1980s when the lake had an annual mean pH of 5.2-5.4, with occasional declines to 4.3-4.7. From the mid to late 1990s, the pH and acid-neutralizing capacity (ANC) rose to 5.8-5.9 and 13-15 μeq L-1, respectively. The lake is poor in ions with a mean conductivity and calcium concentration of 7.7 μS cm-1 and 0.35 mg L-1, respectively. The lake was stocked with 250 young Arctic charr from four small neighbouring lakes between 1998 and 2000. This introduction was successful. Test-fishing in 2004, 2008 and 2012 revealed a relatively dense population of Arctic charr, and the presence of several new age-groups. pH and ANC has remained stable since the late 1990s, or has slightly improved. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.rights | Navngivelse-Ikkekommersiell 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/deed.no | * |
dc.subject | lake | nb_NO |
dc.subject | acidification | nb_NO |
dc.subject | Arctic charr | nb_NO |
dc.subject | re-establishment | nb_NO |
dc.title | Arctic charr (Salvelinus alpinus) re-established in a formerly acidified and highly dilute mountain lake under declining acidic deposition | nb_NO |
dc.title.alternative | Arctic charr (Salvelinus alpinus) re-established in a formerly acidified and highly dilute mountain lake under declining acidic deposition | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.rights.holder | ©The Authors | nb_NO |
dc.subject.nsi | VDP::Zoologiske og botaniske fag: 480 | nb_NO |
dc.subject.nsi | VDP::Zoology and botany: 480 | nb_NO |
dc.source.pagenumber | 30-36 | nb_NO |
dc.source.volume | 38 | nb_NO |
dc.source.journal | Fauna Norvegica | nb_NO |
dc.identifier.doi | 10.5324/fn.v38i0.2272 | |
dc.identifier.cristin | 1613906 | |
cristin.unitcode | 7511,3,0,0 | |
cristin.unitname | Avdeling for akvatisk økologi | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |