Per Erik Jorde

Image of Per Erik Jorde
Phone +47-55906554
Username
Visiting address Blindernveien 31 None 0371 OSLO
Postal address Postboks 1066 Blindern 0316 OSLO

Background

My research interests focus broadly on application of molecular genetic techniques to characterize biological populations. I have done population genetic research on organisms as diverse as plants and mammals (from lemmings to whales), but most research attentions have been devoted to fishes. Main research questions focus on:

spatial genetic differentiation patterns and population identification, and

temporal genetic change and estimation of effective population size.

Some examples include the following: To what extent are species structured into more or less distinct breeding units or populations? How large, geographically are these populations? Are they isolated from each other? How temporary stable are local populations? Do they maintain themselves over evolutionary time scales or are local extinction and recolonization frequent? What are the genetically effective sizes of local populations? Are they dependent on interaction (gene flow) with conspecifics for maintaining genetic variability and avoiding inbreeding? These and similar questions are addressed partly by empirical investigations of spatio-temporal genetic differentiation patterns, using protein polymorphisms, microsatellites or DNA sequencing, and partly by theoretical modeling and computer simulations.

Scientific pledge

I have read and promise to adhere to the NENT.

Publications

  • Barth, Julia Maria Isis; Berg, Paul Ragnar; Jonsson, Per R; Bonanomi, Sara; Corell, Hanna; Hemmer-Hansen, Jakob; Jakobsen, Kjetill Sigurd; Johannesson, Kerstin; Jorde, Per Erik; Knutsen, Halvor; Moksnes, Per-Olav; Star, Bastiaan; Stenseth, Nils Christian; Svedang, Henrik; Jentoft, Sissel & Andre, Carl (2017). Genome architecture enables local adaptation of Atlantic cod despite high connectivity. Molecular Ecology.  ISSN 0962-1083.  26(17), s 4452- 4466 . doi: 10.1111/mec.14207
  • Catarino, Diana; Stefanni, Sergio; Jorde, Per Erik; Menezes, Gui; Company, Joan B.; Neat, Francis & Knutsen, Halvor (2017). The role of the Strait of Gibraltar in shaping the genetic structure of the Mediterranean Grenadier, Coryphaenoides mediterraneus, between the Atlantic and Mediterranean Sea. PLoS ONE.  ISSN 1932-6203.  12(5), s 1- 24 . doi: 10.1371/journal.pone.0174988
  • André, Carl; Svedang, Hendrik; Knutsen, Halvor; Dahle, Geir; Jonsson, Patrik; Ring, Anna-Karin; Sköld, Mattias & Jorde, Per Erik (2016). Population structure in Atlantic cod in the eastern North Sea-Skagerrak-Kattegat: early life stage dispersal and adult migration. BMC Research Notes.  ISSN 1756-0500.  9(63) . doi: 10.1186/s13104-016-1878-9 Full text in Research Archive.
  • Blanco Gonzalez, Enrique; Knutsen, Halvor & Jorde, Per Erik (2016). Habitat discontinuities separate genetically divergent populations of a rocky shore marine fish. PLoS ONE.  ISSN 1932-6203.  11(10) . doi: 10.1371/journal.pone.0163052 Full text in Research Archive.
  • Sodeland, Marte; Jorde, Per Erik; Lien, Sigbjørn; Jentoft, Sissel; Berg, Paul Ragnar; Grove, Harald; Kent, Matthew Peter; Arnyasi, Mariann; Olsen, Esben Moland & Knutsen, Halvor (2016). "Islands of divergence" in the Atlantic cod genome represent polymorphic chromosomal rearrangements. Genome Biology and Evolution.  ISSN 1759-6653.  8(4), s 1012- 1022 . doi: 10.1093/gbe/evw057 Full text in Research Archive.
  • Catarino, Diana; Knutsen, Halvor; Verissimo, Ana; Olsen, Esben Moland; Jorde, Per Erik; Menezes, Gui; Sannæs, Hanne; Stanković, David; Company, Joan Baptista; Neat, Francis; Danovaro, Roberto; Dell'Anno, Antonio; Rochowski, Bastien & Stefanni, Sergio (2015). The Pillars of Hercules as a bathymetric barrier to gene flow promoting isolation in a global deep-sea shark (Centroscymnus coelolepis). Molecular Ecology.  ISSN 0962-1083.  24(24), s 6061- 6079 . doi: 10.1111/mec.13453
  • Jorde, Per Erik; Søvik, Guldborg; Westgaard, Jon-Ivar; Albretsen, Jon; André, Carl; Hvingel, Carsten; Johansen, Torild; Sandvik, Anne Dagrun; Kingsley, Michael Charles & Jørstad, Knut Eirik (2015). Genetically distinct populations of northern shrimp, Pandalus borealis, in the North Atlantic: adaptation to different temperatures as an isolation factor. Molecular Ecology.  ISSN 0962-1083.  24(8), s 1742- 1757 . doi: 10.1111/mec.13158
  • Blanco Gonzalez, Enrique; Knutsen, Halvor; Jorde, Per Erik; Glover, Kevin & Bergstad, Odd Aksel (2014). Genetic analyses of ling (Molva molva) in the Northeast Atlantic reveal patterns relevant to stock assessments and management advice. ICES Journal of Marine Science.  ISSN 1054-3139.  72(2), s 635- 641 . doi: 10.1093/icesjms/fsu135 Show summary
  • Knutsen, Halvor; Jorde, Per Erik; Blanco, Enrique; Ole, Eigaard; Pereyra, Ricardo T.; Sannæs, Hanne; Dahl, Mikael; Andre, Carl & Søvik, Guldborg (2014). Does population genetic structure support present management regulations of the northern shrimp (Pandalus borealis) in Skagerrak and the North Sea?. ICES Journal of Marine Science.  ISSN 1054-3139.  72(3), s 863- 871 . doi: 10.1093/icesjms/fsu204
  • Longmore, Craig; Trueman, Clive N.; Neat, Francis; Jorde, Per Erik; Knutsen, Halvor; Stefanni, Sergio; Catarino, Diana; Milton, James A. & Mariani, Stefano (2014). Ocean-scale connectivity and life cycle reconstruction in a deep-sea fish. Canadian Journal of Fisheries and Aquatic Sciences.  ISSN 0706-652X.  71(9), s 1312- 1323 . doi: 10.1139/cjfas-2013-0343
  • Ryman, Nils; Allendorf, Fred W.; Jorde, Per Erik; Laikre, Linda & Hössjer, Ola (2014). Samples from subdivided populations yield biased estimates of effective size that overestimate the rate of loss of genetic variation. Molecular Ecology Resources.  ISSN 1755-098X.  14(1), s 87- 99 . doi: 10.1111/1755-0998.12154
  • Hössjer, Ola; Jorde, Per Erik & Ryman, Nils (2013). Quasi equilibrium approximations of the fixation index under neutrality: The finite and infinite island models. Theoretical Population Biology.  ISSN 0040-5809.  84, s 9- 24 . doi: 10.1016/j.tpb.2012.11.005
  • Knutsen, Halvor; Jorde, Per Erik; Blanco Gonzalez, Enrique; Robalo, Joana I.; Albretsen, Jon & Almada, Vitor C. (2013). Climate Change and Genetic Structure of Leading Edge and Rear End Populations in a Northwards Shifting Marine Fish Species, the Corkwing Wrasse (Symphodus melops). PLoS ONE.  ISSN 1932-6203.  8(6) . doi: 10.1371/journal.pone.0067492 Full text in Research Archive. Show summary
  • Jorde, Per Erik (2012). Allele frequency covariance among cohorts and its use in estimating effective size of age-structured populations. Molecular Ecology Resources.  ISSN 1755-098X.  12(3), s 476- 480 . doi: 10.1111/j.1755-0998.2011.03111.x
  • Knutsen, Halvor; Jorde, Per Erik; Bergstad, Odd Aksel & Skogen, Morten D. (2012). Population genetic structure in a deepwater fish Coryphaenoides rupestris: patterns and processes. Marine Ecology Progress Series.  ISSN 0171-8630.  460, s 233- 246 . doi: 10.3354/meps09728
  • Robalo, Joana I.; Castilho, Rita; Francisco, Sara M.; Almada, Frederico; Knutsen, Halvor; Jorde, Per Erik; Pereira, Ana M. & Almada, Vitor C. (2012). Northern refugia and recent expansion in the North Sea: the case of the wrasse Symphodus melops (Linnaeus, 1758). Ecology and Evolution.  ISSN 2045-7758.  2(1), s 153- 164 . doi: 10.1002/ece3.77 Full text in Research Archive.
  • Serbezov, Dimitar; Jorde, Per Erik; Bernatchez, L; Olsen, Esben Moland & Vøllestad, Leif Asbjørn (2012). Life history and demographic determinants of effective/census size ratios as exemplified by brown trout (Salmo trutta). Evolutionary Applications.  ISSN 1752-4571.  5(6), s 607- 618 . doi: 10.1111/j.1752-4571.2012.00239.x
  • Serbezov, Dimitar; Jorde, Per Erik; Bernatchez, L; Olsen, Esben Moland & Vøllestad, Leif Asbjørn (2012). Short-Term Genetic Changes: Evaluating Effective Population Size Estimates in a Comprehensively Described Brown Trout (Salmo trutta) Population. Genetics.  ISSN 0016-6731.  191(2), s 579- 592 . doi: 10.1534/genetics.111.136580
  • Knutsen, Halvor; Olsen, Esben Moland; Jorde, Per Erik; Espeland, Sigurd Heiberg; André, C. & Stenseth, Nils Christian (2011). Are low but statistically significant levels of genetic differentiation in marine fishes 'biologically meaningful'? A case study of coastal Atlantic cod. Molecular Ecology.  ISSN 0962-1083.  20(4), s 768- 783 . doi: 10.1111/j.1365-294X.2010.04979.x
  • Heggenes, Jan; Roed, KH; Jorde, Per Erik & Brabrand, Åge (2009). Dynamic micro-geographic and temporal genetic diversity in vertebrates: the case of lake-spawning populations of brown trout (Salmo trutta). Molecular Ecology.  ISSN 0962-1083.  18(6), s 1100- 1111 . doi: 10.1111/j.1365-294X.2009.04101.x
  • Heggenes, Jan; Røed, Knut; Røed, Knut; Jorde, Per Erik & Brabrand, Åge (2009). Dynamic micro-geographic and temporal genetic diversity in vertebrates: the case of lake-spawning populations of brown trout (Salmo trutta). Molecular Ecology.  ISSN 0962-1083.  18(6), s 1100- 1111 . doi: doi: 10.1111/j.1365-294X.2009.04101.x
  • Knutsen, Halvor; Jorde, Per Erik; Sannæs, Hanne; Hoelzel, A. Rus; Bergstad, Odd Aksel; Stefanni, Sergio; Johansen, Torild & Stenseth, Nils Christian (2009). Bathymetric barriers promoting genetic structure in the deepwater demersal fish tusk (Brosme brosme). Molecular Ecology.  ISSN 0962-1083.  18(15), s 3151- 3162 . doi: 10.1111/j.1365-294X.2009.04253.x
  • Schneider, M; Sannaes, H; Jorde, Per Erik & Knutsen, Halvor (2009). Isolation and characterisation of 11 microsatellite loci in the abyssal carapine grenadier Coryphaenoides carapinus (Actinoperygii, Macrouridae) and cross-amplification in two other deep-sea macrourid species. Conservation Genetics.  ISSN 1566-0621.  10(6), s 1869- 1871 . doi: 10.1007/s10592-009-9838-8
  • Olsen, Esben Moland; Knutsen, Halvor; Gjøsæter, Jakob; Jorde, Per Erik; Knutsen, Jan Atle & Stenseth, Nils Christian (2008). Small-scale biocomplexity in coastal Atlantic cod supporting a Darwinian perspective on fisheries management. Evolutionary Applications.  ISSN 1752-4571.  1(3), s 524- 533
  • Jorde, Per Erik; Knutsen, Halvor; Espeland, Sigurd Heiberg & Stenseth, Nils Christian (2007). Spatial scale of genetic structuring in coastal cod Gadus morhua and geographic extent of local populations. Marine Ecology Progress Series.  ISSN 0171-8630.  343, s 229- 237 . doi: 10.3354/meps06922
  • Jorde, Per Erik & Ryman, Nils (2007). Unbiased estimator for genetic drift and effective population size. Genetics.  ISSN 0016-6731.  177, s 927- 935 . doi: 10.1534/genetics.107.075481
  • Jorde, Per Erik; Schweder, Tore; Bickham, JW; Givens, GH; Suydam, R; Hunter, D & Stenseth, Nils Christian (2007). Detecting genetic structure in migrating bowhead whales off the coast of Barrow, Alaska. Molecular Ecology.  ISSN 0962-1083.  16, s 1993- 2004 . doi: 10.1111/j.1365-294X.2007.03268.x
  • Knutsen, H; Jorde, Per Erik; Albert, OT; Hoelzel, AR & Stenseth, Nils Christian (2007). Population genetic structure in the North Atlantic Greenland halibut (Reinhardtius hippoglossoides): influenced by oceanic current systems?. Canadian Journal of Fisheries and Aquatic Sciences.  ISSN 0706-652X.  64 . doi: 10.1139/F07-070
  • Knutsen, Halvor; Jorde, Per Erik; Albert, Ole Thomas; Hoelzel, AR & Stenseth, Nils Christian (2007). Population genetic structure in the North Atlantic Greenland halibut: influenced by oceanic current systems?. Canadian Journal of Fisheries and Aquatic Sciences.  ISSN 0706-652X.  64, s 857- 866
  • Stenseth, Nils Christian; Jorde, Per Erik; Chan, Kung-Sik; Hansen, E; Knutsen, Halvor; André, Carl; Skogen, Morten & Lekve, Kyrre (2006). Ecological and genetic impact of Atlantic cod larval drift in the Skagerrak. Proceedings of the Royal Society of London. Biological Sciences.  ISSN 0962-8452.  273, s 1085- 1092
  • Ryman, N; Palm, S; Andre, C; Carvalho, GR; Dahlgren, TG; Jorde, Per Erik; Laikre, L; Larsson, LC; Palme, A & Ruzzante, DE (2006). Power for detecting genetic divergence: differences between statistical methods and marker loci. Molecular Ecology.  ISSN 0962-1083.  15
  • Ehrich, Dorothee & Jorde, Per Erik (2005). High genetic variability despite high-amplitude population cycles in lemmings. Journal of Mammalogy.  ISSN 0022-2372.  86(2), s 380- 385
  • Olsen, Esben Moland; Knutsen, Halvor; Gjøsæter, Jakob; Jorde, Per Erik; Knutsen, Jan Atle & Stenseth, Nils Christian (2004). Life-history variation among local populations of Atlantic cod from the Norwegian Skagerrak coast. Journal of Fish Biology.  ISSN 0022-1112.  64, s 1725- 1730
  • Knutsen, Halvor; André, Carl; Jorde, Per Erik; Skogen, Morten; Thuróczy, E. & Stenseth, Nils Christian (2004). Transport of North Sea cod larvae into the Skagerrak coastal populations. Proceedings of the Royal Society of London. Biological Sciences.  ISSN 0962-8452.  271, s 1337- 1344
  • Palm, Stefan; Laikre, Linda; Jorde, Per Erik & Ryman, Nils (2003). Effective population size and temporal genetic change in stream resident brown trout (Salmo trutta, L.). Conservation Genetics.  ISSN 1566-0621.  4, s 249- 264
  • Rueness, Eli Knispel; Jorde, Per Erik; Hellborg, L.; Stenseth, Nils Christian; Ellegren, H. & Jakobsen, Kjetill Sigurd (2003). Cryptic population structure in a large, mobile mammalian predator: the Scandinavian lynx. Molecular Ecology.  ISSN 0962-1083.  12, s 2623- 2633
  • Knutsen, Halvor; Jorde, Per Erik; Andre, Carl & Stenseth, Nils Christian (2003). Fine-scaled geographic population structuring in a highly mobile marine species: the Atlantic cod. Molecular Ecology.  ISSN 0962-1083.  12, s 385- 394 Show summary
  • Knutsen, Halvor; Knutsen, Jan Atle & Jorde, Per Erik (2001). Genetic evidence for mixed origin of recolonized sea-trout populations. Heredity.  ISSN 0018-067X.  87, s 207- 214 Show summary
  • Ryman, Nils & Jorde, Per Erik (2001). Statistical power when testing for genetic differentiation. Molecular Ecology.  ISSN 0962-1083.  10, s 2361- 2374
  • Ehrich, Dorothee; Jorde, Per Erik; Krebs, C.J.; Kenney, A.J.; Stacy, John Erik & Stenseth, Nils Christian (2001). Spatial structure of lemming populations (Dicrostonyx groenlandicus) fluctuating in density. Molecular Ecology.  ISSN 0962-1083.  10, s 481- 495
  • Knutsen, Halvor; Rukke, Bjørn Arne; Jorde, Per Erik & Ims, Rolf Anker (2000). Genetic differentiation among populations of the beetle Bolitophagus reticulatus (Coleoptera: Tenebrionidae) in a fragmented and a continuous landscape. Heredity.  ISSN 0018-067X.  6, s 667- 676 Show summary
  • Jorde, Per Erik; Palm, Stefan & Ryman, Nils (1999). Estimating genetic drift and effective population size from temporal shifts of dominant gene marker frequencies. Molecular Ecology.  ISSN 0962-1083.  8, s 1171- 1178
  • Ryman, Nils; Jorde, Per Erik & Laikre, Linda (1999). Supportive breeding and inbreeding effective number: reply to Nomura. Conservation Biology.  ISSN 0888-8892.  13, s 673- 676
  • Laikre, Linda; Jorde, Per Erik & Ryman, Nils (1998). Temporal change of mitochondrial DNA haplotype frequencies and female effective size in a brown trout (Salmo trutta) population. Evolution.  ISSN 0014-3820.  52, s 910- 915
  • Nilsson, Thomas & Jorde, Per Erik (1998). Allozyme variation in allotetraploid Saxifraga osloensis and its diploid progenitors. Nordic Journal of Botany.  ISSN 0107-055X.  18, s 425- 430
  • Stacy, John Erik; Jorde, Per Erik; Steen, Harald; Ims, Rolf Anker; Purvis, A. & Jakobsen, Kjetill Sigurd (1997). Lack of concordance between mtDNA gene flow and population density fluctuations in the bank vole. Molecular Ecology.  ISSN 0962-1083.  6, s 751- 759 Show summary
  • Thorsén, Johanna; Jorde, Per Erik; Aravanopoulos, F. A.; Gullberg, U. & Zsuffa, L. (1997). Inheritance and linkage of isozyme loci in the basket willow (Salix viminalis L.). Journal of Heredity.  ISSN 0022-1503.  88, s 144- 150
  • Jorde, Per Erik & Ryman, Nils (1996). Demographic genetics of brown trout (Salmo trutta) and estimation of effective population size from temporal change of allele frequencies. Genetics.  ISSN 0016-6731.  143, s 1369- 1381
  • Laikre, Linda; Prodöhl, Paulo A.; Jorde, Per Erik & Ryman, Nils (1996). Genetic variability at minisatellite and allozyme loci in brown trout (Salmo trutta} -A comparison. Hereditas.  ISSN 0018-0661.  123, s 191- 195
  • Jorde, Per Erik & Ryman, Nils (1995). Temporal allele frequency change and estimation of effective size in populations with overlapping generations. Genetics.  ISSN 0016-6731.  139, s 1077- 1090
  • Ryman, Nils; Jorde, Per Erik & Laikre, Linda (1995). Supportive breeding and variance effective population size. Conservation Biology.  ISSN 0888-8892.  79, s 1619- 1628
  • Garcia-Marin, Jose Luis; Jorde, Per Erik; Ryman, Nils; Utter, Fred & Pla, Charles (1991). Management implications of genetic differentiation between native and hatchery populations of brown trout (Salmo trutta) in Spain. Aquaculture.  ISSN 0044-8486.  95, s 235- 249
  • Jorde, Per Erik; Gitt, Andrew & Ryman, Nils (1991). New biochemical genetic markers in the brown trout (Salmo trutta L.). Journal of Fish Biology.  ISSN 0022-1112.  39, s 451- 454
  • Jorde, Per Erik & Ryman, Nils (1991). Allele frequency estimation at loci with incomplete co-dominant expression. Heredity.  ISSN 0018-067X.  65, s 429- 433

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  • Blanco Gonzalez, Enrique; Knutsen, Halvor & Jorde, Per Erik (2016). Seascape genomics in a growing fishery: the case of a translocated cleaner fish, the corkwing wrasse (Symphodus melops).
  • Blanco Gonzalez, Enrique; Jorde, Per Erik & Knutsen, Halvor (2015). Climate change and the development of the corkwing wrasse (Symphodus melops) fishery in Scandinavia: genetic population structure and potential implication of translocated cleaner fish.
  • Blanco Gonzalez, Enrique; Knutsen, Halvor & Jorde, Per Erik (2015). Genetic and phenotypic characterization of local and translocated corkwing wrasse (Symphodus melops) populations.
  • Blanco Gonzalez, Enrique; Knutsen, Halvor & Jorde, Per Erik (2015). Genetic and phenotypic characterization of local and translocated corkwing wrasse (Symphodus melops) populations.
  • Blanco Gonzalez, Enrique; Knutsen, Halvor & Jorde, Per Erik (2014). Population structure of corkwing wrasse (Symphodus melops) in Norway.
  • Blanco Gonzalez, Enrique; Knutsen, Halvor; Jorde, Per Erik; Glover, Kevin & Bergstad, Odd Aksel (2014). Population structure of ling (Molva molva) in the Northeast Atlantic and its implications for stock assessments and management advice.
  • Jorde, Per Erik; Søvik, Guldborg; Westgaard, Jon-Ivar; Orr, David; Han, Guoqi; Stansbury, Don & Jørstad, Knut Eirik (2014). Genetic population structure of northern shrimp, Pandalus borealis, in the Northwest Atlantic. Canadian Technical Report of Fisheries and Aquatic Sciences. iv.
  • Catarino, Diana; Knutsen, Halvor; Verissimo, Ana; Sannæs, Hanne; Jorde, Per Erik; Olsen, Esben Moland; Menezes, Gui M. M.; company, Joan; Danovaro, Roberto; Dell'Anno, Antonio & Stefanni, Sergio (2012). Postglacial isolation of the Mediterranean Centroscymnus coelolepis reveals the importance of the Pillars of Hercules as geographical barrier for deep sea sharks.
  • Knutsen, Halvor & Jorde, Per Erik (2012). Population structure in leading edge and rear end in a northwards shifting species, the corkwing wrasse, Symphodus melops.
  • Longmore, Craig; Knutsen, Halvor; Jorde, Per Erik; Clive, Truman; Neat, Francis C. & Mariano, Stefano (2012). Unravelling The Population Structure Of aphanopus carbo: a Multididciplinary Approach.
  • Jorde, Per Erik (2010). Kysttorsken: Gammel kunnskap møter ny. Fædrelandsvennen.  ISSN 0805-3790.  s 3- 3
  • Jorde, Per Erik; Rueness, Eli Knispel; Stenseth, Nils Christian & Jakobsen, Kjetill Sigurd (2006). Cryptic population structuring in Scandinavian lynx: reply to Pamilo. Molecular Ecology.  ISSN 0962-1083.  15, s 1189- 1192
  • Schweder, Tore; Jorde, Per Erik & Stenseth, Nils Christian (2005). Temporal genetic pattern in BCB bowhead whales in the fall migration at Barrow: a reflection of a structured population? IWC/SC/57/BRG10.
  • Jorde, Per Erik; Schweder, Tore & Stenseth, Nils Christian (2004). The Bering-Chukchi-Beaufort stock of bowhead whales: one homogenous population?.

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Published May 26, 2011 9:49 PM - Last modified Oct. 23, 2013 11:11 AM

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