Roar Kristoffersen
Roar Kristoffersen
Associate professor University of Tromsø
Verified email at uit.no
Title
Cited by
Cited by
Year
Parallel evolution of ecomorphological traits in the European whitefish Coregonus lavaretus (L.) species complex during postglacial times
K Østbye, PA Amundsen, L Bernatchez, A Klemetsen, R Knudsen, ...
Molecular Ecology 15 (13), 3983-4001, 2006
2422006
Salmon lice infection of wild sea trout and Arctic char in marine and freshwaters: the effects of salmon farms
PA Bjørn, B Finstad, R Kristoffersen
Aquaculture Research 32 (12), 947-962, 2001
2312001
Salmon lice, Lepeophtheirus salmonis (Krøyer), infestation in sympatric populations of Arctic char, Salvelinus alpinus (L.), and sea trout, Salmo trutta (L.), in areas …
PA Bjørn, B Finstad
ICES Journal of Marine Science 59 (1), 131-139, 2002
1072002
Aggregation of helminths: the role of feeding behavior of fish hosts
R Knudsen, MA Curtis, R Kristoffersen
Journal of Parasitology 90 (1), 1-7, 2004
912004
Resource competition and interactive segregation between sympatric whitefish morphs
PA Amundsen, R Knudsen, A Klemetsen, R Kristoffersen
Annales Zoologici Fennici, 301-307, 2004
772004
Takvatn through 20 years: long-term effects of an experimental mass removal of Arctic charr, Salvelinus alpinus, from a subarctic lake
A Klemetsen, PA Amundsen, PE Grotnes, R Knudsen, R Kristoffersen, ...
Ecology, behaviour and conservation of the charrs, genus Salvelinus, 39-47, 2002
712002
Parasite communities in two sympatric morphs of Arctic charr, Salvelinus alpinus (L.), in northern Norway
R Knudsen, R Kristoffersen, PA Amundsen
Canadian Journal of Zoology 75 (12), 2003-2009, 1997
671997
Area protection may reduce salmon louse infection risk to wild salmonids
PA Bjørn, R Sivertsgård, B Finstad, R Nilsen, RM Serra-Llinares, ...
Aquaculture Environment Interactions 1 (3), 233-244, 2011
642011
New parasites and predators follow the introduction of two fish species to a subarctic lake: implications for food-web structure and functioning
PA Amundsen, KD Lafferty, R Knudsen, R Primicerio, R Kristoffersen, ...
Oecologia 171 (4), 993-1002, 2013
552013
Seasonal and ontogenetic dynamics in trophic transmission of parasites
PA Amundsen, R Knudsen, AM Kuris, R Kristoffersen
Oikos 102 (2), 285-293, 2003
542003
Infection of whitefish (Coregonus lavaretus L. sl) by Triaenophorus crassus Forel (Cestoda: Pseudophyllidea): a case study in parasite control
PA Amundsen, R Kristoffersen
Canadian Journal of Zoology 68 (6), 1187-1192, 1990
441990
Differences in risks and consequences of salmon louse, Lepeophtheirus salmonis (Krøyer), infestation on sympatric populations of Atlantic salmon, brown trout, and …
PA Bjørn, B Finstad, R Kristoffersen, RS McKinley, AH Rikardsen
ICES Journal of Marine Science 64 (2), 386-393, 2007
432007
Food borne parasites as indicators of trophic segregation between Arctic charr and brown trout
R Knudsen, PA Amundsen, R Nilsen, R Kristoffersen, A Klemetsen
Environmental Biology of Fishes 83 (1), 107, 2008
382008
Seasonal dynamics and persistence of Gyrodactylus salaris in two riverine anadromous Arctic charr populations
AC Winger, M Kanck, R Kristoffersen, R Knudsen
Environmental Biology of Fishes 83 (1), 117, 2008
312008
Bagatellenes tyranni-samhandlingsstrukturen i et norsk fengsel
R Kristoffersen
Arbeidspsykologisk Institutt, Universitetet i Oslo, 1986
311986
The contribution of imprisonment and release to fatal overdose among a cohort of Norwegian drug abusers
E Ødegård, EJ Amundsen, KB Kielland, R Kristoffersen
Addiction Research & Theory 18 (1), 51-58, 2010
282010
Nasjonal lakselusovervåkning 2008 på ville bestander av laks, sjøørret og sjørøye langs Norskekysten samt i forbindelse med evaluering av nasjonale laksevassdrag og laksefjorder
PA Bjørn, B Finstad, R Nilsen, I Uglem, L Asplin, Ø Skaala, KK Boxaspen, ...
272009
Long-term effects of a stock depletion programme: the rise and fall of a rehabilitated whitefish population
PA Amundsen, R Kristoffersen, R Knudsen, A Klemetsen
Ergebnisse der Limnologie 57, 577-588, 2002
272002
Occurrence of the digenean Cryptocotyle lingua in farmed Arctic charr Salvelinus alpinus and periwinkles Littorina littorea sampled close to charr farms in northern Norway
R Kristoffersen
Diseases of Aquatic Organisms 12 (1), 59-65, 1991
271991
Parasite communities of two three-spined stickleback populations in subarctic Norway—effects of a small spatial-scale host introduction
JA Kuhn, R Kristoffersen, R Knudsen, J Jakobsen, DJ Marcogliese, ...
Parasitology Research 114 (4), 1327-1339, 2015
242015
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