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Niklas Björklund

Niklas Björklund
Pest Risk Analyst at the Department of Ecology at SLU

Presentation

Since January 2017 I work full-time at the Unit for risk assessment of alien plant pests.

My previous research focused on how forest insects respond to their environment and how knowledge about insect behaviours can be used to deal with insect pests. I have mainly been working with two species of tree-killing bark beetles (Dendroctonus ponderosae and Ips typographus), and two weevil species that cause damage to conifer seedlings (Hylobius abietis) and young conifer trees (Hylobius warreni).

Key words: Climate change, co-evolution, defence, reproductive success, range expansion, pest management, reforestation, susceptibility rating, scarification, host plant acceptance, suitability, susceptibility, host finding, visual orientation, olfactory orientation, traps, methyl jasmonate, pine weevil, spruce bark beetle, mountain pine beetle.

 

Professional preparation

  • Uppsala University, Biology, Master of Science (MSc), 1999
  • Swedish University of Agricultural Sciences (SLU), Biology, Doctor of Philosophy (PhD), 2004
  • University of Northern British Columbia, Ecosystem Science and Management, Post-doc., 2005-2007 


Appointments

  • Dept. of Ecology, Swedish University of Agricultural Sciences, Associate Professor (Docent), 2011-present
  • Dept. of Ecology, Swedish University of Agricultural Sciences, Researcher, 2008-2010
  • Dept. of Ecosystem Science and Management, University of Northern British Columbia, Post-Doctoral Fellow, 2005-2007
  • Dept. of Entomology, Swedish University of Agricultural Sciences, Ph.D. student, 1999-2004
  • Dept. of Clinical Neuroscience, Medical Psychology, Karolinska Hospital, Assistant in a research project, 1998-1999

 

Publications in international scientific journals and edited books

Google Scholar Citations
Web of Knowledge ResearcherID

Please send me an email if you would like a copy of any of the publications without a link.

Jeger M, Bragard C, Caffier D, Candresse T, Chatzivassiliou E, Dehnen-Schmutz K, Gilioli G, Grégoire J-C, Jaques Miret JA, MacLeod A, Niere B, Parnell S, Potting R, Rafoss T, Rossi V, Urek G, Van Bruggen A, Van Der Werf W, West J, Winter S, Bergeretti F, Björklund N, Mosbach-Schulz O, Vos S and Navajas Navarro M. (2017). Pest risk assessment of Eotetranychus lewisi for the EU territory. EFSA Journal;15(10):4878, 122 pp.

 Zas, R., Björklund, N., Sampedro, L. et al. (2017) Genetic variation in resistance of Norway spruce seedlings to damage by the pine weevil Hylobius abietis. Tree Genetics & Genomes (2017) 13: 111.

Lundborg, L., Nordlander, G., Björklund, N., Nordenhem, H. & Borg-Karlson, A.-K. (2016). Methyl jasmonate-induced monoterpenes in Scots pine and Norway spruce tissues affect pine weevil orientation. Journal of Chemical Ecology 42(12), 1237-1246

Lundborg, A., Fedderwitz, F., Björklund, N., Nordlander, G. & Borg-Karlson, A.-K. (2016) Induced defenses change the chemical composition of pine seedlings and influence meal properties of the pine weevil Hylobius abietis. Phytochemistry 130: 99-105.

Maňák, V., Björklund, N., Lenoir, L. & Nordlander, G. (2016). Testing associational resistance against pine weevils mediated by Lasius ants attending conifer seedlings Journal of Applied Entomology 141: 411–416.

Maňák, V., Björklund, N., Lenoir, L., Knape, J. & Nordlander, G. (2016). Behavioural responses of pine weevils to non-consumptive interactions with red wood ants. Journal of Zoology, 299, 10-16

Björklund, N., Lindelöw, Å. & Schroeder, L.M. (2016). Erroneous conclusions about current geographical distribution and future expansion of forest insects in Northern Sweden: comments on Hof and Svahlin (2015). Scandinavian Journal of Forest Research, 31, 126-127

Fedderwitz, F., Nordlander, G., Ninkovic, V. & Björklund, N. (2016). Effects of jasmonate-induced resistance in conifer plants on the feeding behaviour of a bark-chewing insect, Hylobius abietisJ. Pest Sci., 1-9.

Fedderwitz, F., Björklund, N., Ninkovic, V. & Nordlander, G. (2015). The structure of feeding behavior in a phytophagous insect (Hylobius abietis). Entomol. Exp. Appl., 155, 229-239.

Manak, V., Björklund, N., Lenoir, L. & Nordlander, G. (2015).The effect of red wood ant abundance on feeding damage by the pine weevil Hylobius abietis. Agricultural and Forest Entomology 17, 57-63.

Terenius, O., Björklund, N., Jaenson, T. G. T. & Nordlander, G. (2014). Premature proposal of the pine weevil as a vector of a human pathogen. Journal of Clinical Microbiology 52: 4115.

Mayer F., Björklund N., Wallén J., Långström B. & Cassel-Lundhagen A. (2014). Mitochondrial DNA haplotypes indicate two postglacial re-colonization routes of the spruce bark beetle Ips typographus through northern Europe to Scandinavia. Journal of Zoological Systematics and Evolutionary Research 52, 285–292.

Fedderwitz F., Björklund N., Ninkovic V. & Nordlander G. (2014). Diel behaviour and time budget of the adult pine weevil Hylobius abietis. Physiological Entomology, 39, 103 -110.

Öhrn, P., Långström, B., Lindelöw, Å., Björklund, N. (2014) Seasonal flight patterns of Ips typographus in southern Sweden and thermal sums required for emergence. Agriculture and Forest Entomology, 16, 147 – 157. [FULL TEXT]
 
Zas R., Björklund N., Nordlander G., Cendán C., Hellqvist C. & Sampedro L. (2014). Exploiting jasmonate-induced responses for field protection of conifer seedlings against a major forest pest, Hylobius abietis. Forest Ecology and Management, 313, 212-223. [FULL TEXT] [AUDIO SLIDE

Manak, V., Nordenhem, H., Björklund, N., Lenoir, L. & Nordlander, G. (2013). Ants protect conifer seedlings from feeding damage by the pine weevil Hylobius abietis. Agricultural and Forest Entomology 15: 98-105.

Zhao T, Krokene P, Hu J, Christiansen E, Björklund N, et al. (2011) Induced terpene accumulation in Norway Spruce inhibits bark beetle colonization in a dose-dependent manner. PLoS ONE 6(10): e26649.

Cudmore, T.J., Björklund, N., Carroll, A.L. & Lindgren, B.S. (2010) Climate change and range expansion of an aggressive bark beetle: evidence of higher reproductive success in naïve host tree populations. Journal of Applied Ecology 47, 1036–1043.
This article was rated as one of the “Top-read articles” in 2010 with 5,450 downloads.
 
Zhao, T., Krokene, P., Björklund, N., Långström, B., Solheim, H. Christiansen, E. & Borg-Karlson, A.-K. (2010) The influence of Ceratocystis polonica inoculation and methyl jasmonate application on terpene chemistry of Norway spruce, Picea abiesPhytochemistry 71, 1332-1341. [FULL TEXT]

Klingenberg, M.D., Björklund, N. & Aukema, B.H. (2010) Seeing the forest through the trees: differential dispersal of Hylobius warreni Wood within modified forest habitats. Environmental Entomology 39, 898-906.  [FULL TEXT]    

Björklund, N & Lindgren, B.S. (2010) Basal area – a measure with limited ecological significance for phloem feeding insects. Chapter 6, pp. 151-156 In Insect Habitats: Characteristics, Diversity and Management. Edited by Editors: Edina L. Harris and Newell E. Davies, Nova Science Publishers, Inc., Hauppauge, New York, USA, ISBN: 978-1-60876-396-2. [BOOK ABSTRACT] [CHAPTER ABSTRACT]

Björklund, N. (2009) Non-destructive tree trunk funnel trap for capturing Hylobius warreni (Coleoptera: Curculionidae) ascending stems of trees. The Canadian Entomologist 141, 422-424. [FULL TEXT]  

Björklund, N. & Lindgren, B.S. (2009) Diameter of lodgepole pine and mortality caused by the mountain pine beetle: factors that influence their relationship and applicability for susceptibility rating. Canadian Journal of Forest Research 39, 908-916. [FULL TEXT

Björklund, N., B.S. Lindgren, T.L. Shore, & T. Cudmore (2009) Can predicted mountain pine beetle net production be used to improve stand prioritization for management? Forest Ecology and Management 257, 233–237. [FULL TEXT

Öhrn, P., Klingenberg, M., Hopkins, G. & Björklund, N. (2008) Two non-destructive techniques for determining the sex of live adult Hylobius warreni. The Canadian Entomologist 140, 617-620. [FULL TEXT

Björklund, N. (2008) Cues for shelter use in a phytophagous insect. Journal of Insect Behaviour 21, 9-23. [FULL TEXT]  

Nordlander, G., Bylund, H. & Björklund, N. (2005) Soil type and microtopography influencing feeding above and below ground by the pine weevil Hylobius abietis. Agricultural and Forest Entomology 7, 107-113.

Björklund, N., Nordlander, G. & Bylund, H. (2005) Olfactory and visual stimuli used in orientation to conifer seedlings by the pine weevil Hylobius abietis. Physiological Entomology 30, 225-231. [FULL TEXT]  

Björklund, N., Nordlander, G. & Bylund, H. (2003) Host-plant acceptance on mineral soil and humus by the pine weevil Hylobius abietis (L.). Agricultural and Forest Entomology 5, 61-65. [FULL TEXT

Rintamäki, P.T., Höglund, J., Karvonen, E., Alatalo, R.V., Björklund, N., Lundberg, A.,  Rätti, O. & Vouti, J. (2000) Combs and sexual selection in black grouse (Tetrao tetrix). Behavioral Ecology, 11, 465-471. [FULL TEXT

Other publications

Björklund, N. and Boberg, J. (2017). Rapid Pest Risk Analysis Xylosandrus germanus. Zenodo. http://doi.org/10.5281/zenodo.915370

Björklund, N., and Boberg, J. (2017). Rapid Pest Risk Analysis Xyleborinus attenuatus. Zenodo. http://doi.org/10.5281/zenodo.915710

Nordlander, G., Hellqvist, C. and Björklund, N. Continuously updated website ”The pine weevil Hylobius abietis".

Nordlander, G., Wallertz, K., Björklund, N., Hellqvist, C. & Petersson, M. (2017). Snytbaggen. Sidorna 46-64 i: Skador på skog, del 1, Skogsskötselserien nr 12 (Witzell, J., redaktör). Skogsstyrelsen, 113 s.

Björklund, N (2016) Behavioural responses of pine weevils to non-consumptive interactions with red wood ants. Journal of Zoology podcast, Spring/Summer 2016 (interview)

Björklund, N., Nordlander, G., Fedderwitz, F., Ninkovic, V. Lundborg, L., Sampedro, L. and Zas, R. (2015). Improved forest regeneration by triggering the induced defence of conifer seedlings against bark-feeding insects. P 163 in: ISCE2015, International Society of Chemical Ecology, Stockholm, Sweden 29th June – 3rd July 2015.

Djurle, A., Björklund, N. (2014). SLU:s undervisning inom växtskyddsområdet. Uppdrag från Plattformen för växtskydd, Dnr: SLU ua 2015.1.1.1-68, sid 1-296

Björklund, N (2014) "Vaccin" mot snytbagge på gång. Land Lantbruk & Skogsland 2014-12-15 (interview)

Björklund, N, Hellqvist, C. Härlin, C., Johansson, K., Nordlander, G. and Wallertz, K., (2014) Snytbaggen – åtgärder för lyckade planteringar. Printed brochure that is also available on http://pub.epsilon.slu.se/11687/

Björklund, N. (2014) Tidernas största barkborreattack – Orsakad av Contortabastborren. Excellent Magasin för skogsägare, Stora Enso, p. 22-23 (interview).

Fedderwitz, F., Nordlander, G., Ninkovic, V. and Björklund, N. (2014) Effects of methyl jasmonate treatment of conifer seedlings on pine weevil feeding SIP15 – 15th International Symposium on Insect-Plant Relationships University of Neuchâtel, Switzerland, 17-22 August, 2014. p. 145

Björklund, N & Nordlander, G (2013) New method triggers the defense of seedlings against pine weevils. (press release)

Zas, R., Björklund, N., Nordlander, G., Cendán, C., Hellqvist, C. & Sampedro, L. (2013) Moving to the field: effective protection of conifer seedlings against a forest pest by eliciting jasmonate-induced resistance. Proceedings: Induced resistance in plants against insects and diseases, Avignon, France, 10-13 June 2013.  ISBN 978-92-9067-267-8. IOBC-WPRS Bulletin 89: 277-281.

Öhrn, P, Björklund, N, Lindelöw, Å., Långström, B. (2012) Ta ut vindfällda granar i rätt tid. SkogsEko, 4, p. 43.

Björklund, N. (2012) Inget entydigt resultat av ombehandlingar. SkogsEko, 2, p. 42.

Lundborg L, Moreira X, Zas R, Sampedro L, Björklund N, Hellqvist C, Nordlander G, and Borg-Karlson A-K. (2012) Chemical analysis of methyl jasmonate treated Scots pine Pinus sylvestris using GC-MS and LC-MS. 28th ISCE Annual Meeting, Vilnius, Lithuania, July 22-26, p. 44

Zhao, T., Krokene P., Björklund N., Erbilgin N., Christiansen E., Långström B., Solheim H., Borg-Karlson, A.-K. (2012) Fungal inoculation and methyl jasmonate application induce highly variable terpene accumulation in Norway spruce. Genetic Aspects of Adaptation and Mitigation: Forest Health, Wood Quality and Biomass Production; Riga, Latvia; 3-5 October 2012. Poster

Frauke Fedderwitz, Niklas Björklund, Velemir Ninkovic and Göran Nordlander (2012) Pine weevil (Hylobius abietis) feeding pattern on conifer seedlings. Measuring Behavior 2012 - 8th International Conference on Methods and Techniques in Behavioral Research, August 28 - 31 August 2012, Utrecht, The Netherlands. p. 333-337

Zhao T, Krokene P, Hu J, Christiansen E, Björklund N, et al. (2012) Ceratocystis polonica induced terpene accumulation in Norway spruce is negatively correlated to colonization of Ips typographus, 28th ISCE Annual Meeting, Vilnius, Lithuania, July 22-26, p. 160

Krokene, P., Solheim, H., Christiansen, E., Zhao, T., Hu, J., Borg-Karlson, A.-K., Björklund, N., Långström, B. (2011) Terpener – viktiga för försvar mot barkborrar. SkogsEko, 4, p. 42

Björklund, N. & Långström, B. (2011) Terpener stoppar granbarkborren, Notiser från SLU, 5, 1. 

Björklund, N (2011) Trees defend themselves chemically against attacks by the spruce bark beetle (press release) Published in Forskning.se, Skogsaktuellt.se, Natursverige.se, ATL, och SKOG & framtid.

Cassel-Lundhagen, A., Björklund, N., Mayer, F., Wallén, Långström, B. (2011) The spruce bark beetle (Ips typographus) followed its host – a two-way post glacial colonisation route into Scandinavia. Poster presentation at IUFRO - Genetics of Bark Beetles and Associated Microorganisms, 5-6 September 2011, Sopron, Hungary. p. 16.

Lindgren, S., Björklund, N., Carroll, A., Cudmore, T. (2011) Increased susceptibility and suitability of naïve lodgepole pine to mountain pine beetle. North American Forest Insect Work Conference, Portland, May 9-12, 2011.

NN (2011) Pest insect article is most downloaded. Press release from SLU

Björklund, N (2010) Varmare klimat orsakar förödande utbrott av skadeinsekter i nya områden. Press release from SLU.  Published in Skogsaktuellt, MiljöAktuellt, Sveriges Radio, Oddasat, Forskning.se, and ATL.

Björklund, N (2011) I skuggan av bastborrarna. Vi Skogsägare, 4, 36. (interview).

Björklund, N. (2010) Snytbaggen gillar inte plantor på mineraljord. Press release from SLU based on my associate professorship lecture.

Björklund, N. (2010) Har du sett angrepp av jättebastborren? Entomologisk Tidskrift, 131, 136.

Larsson, P.-E., Björklund, N., Långström, B., Gustavsson, K. & Örlander, G. (2010) A large-scale experiment to control the spruce bark beetle Ips typographus using pheromone-baited trap logs in Sweden. Poster presentation, ECE, Budapest, 22-27 August 2010.

Björklund, N. (2010) Vädret gynnar trädens försvar, ATL Lantbrukets Affärstidning, 2 juli, 2 p. (interview).
 
Björklund, N & Långström, B. (2010) Enstaka grupper med granbarkborrefällor ger ingen effekt, SkogsEko, bilaga insektsskador, 1, 12.

Larsson, P.-E., Björklund, N., Långström, B., Gustavsson, K. & Örlander, G. (2010) Granbarkborrar, fångstvirkesfällor och angripen skog. Infoblad Skogsstyrelsen, 1-4
 
Björklund, N. & Långström, B. (2010) Kompletterande studier inom projektet ”Effekt av fångstvirkesfällor på näraliggande skog 2008”, Slutrapport till Södra Skogsägarnas Stiftelse för Forskning, Utveckling och Utbildning. 23 p.

Långström, B. & Björklund, N. (2010) Så har bekämpningen av granbarkborren lyckats, SkogsEko, bilaga insektsskador, 1, 8-9.
 
Långström, B., Isacsson, G., Björklund, A., Björklund, N. (2010) Utvärdering av storskalig barkborrebekämpning med feromonfällor. Slutrapport till Skogsstyrelsen 12p.

Björklund, N. & Långström, B. (2009) Misslyckade angrepp av granbarkborrar - Slutrapport till Skogsstyrelsen 11 p.

Björklund, N. (2009) Skadad bark hämmar förökning. SkogsLand nr. 10, p. 5. (interview).

Björklund, N. & Schroeder, M. (2009) Utvärdering av "Sök och plock - sommar" - Slutrapport till Skogsstyrelsen 12 p.

Björklund, N., Lindgren, B.S., Shore, T.L. & Cudmore, T. (2009) Source or sink stands – Can stand parameters be used to predict mountain pine beetle brood production with enough precision to be useful for assigning treatment priorities? Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, Victoria, BC. Mountain Pine Beetle Working Paper 2008-03, ISBN 978-0-662-47878-2, 12 p.

Björklund, N., Öhrn, P., & Långström, B. (2009) Mass trapping of the spruce bark beetle Ips typographus – Catch efficiency of baited trap-logs relative to plastic pheromone traps. In: Kunca A, Zubrik M (eds.) Insects and Fungi in Storm Areas. Proceedings of the IUFRO Working Party 7.03.10 Methodology of Forest Insect and Disease Survey in Central Europe, workshop held on September 15-19, 2008, Štrbské Pleso, Slovakia, p. 149-150.

Malm, H. & Björklund, N. (2009) Granbarkborrar i naturreservat kan bekämpas med barkning. Press release from Länsstyrelsen Hallands Län.

Cudmore, T., Björklund, N., Carroll, A.L. & Lindgren, B.S. (2009) Population dynamics-implications of range expansion by the mountain pine beetle into naïve lodgepole pine populations. AGM, Professional Pest Management Association of BC, February 17, 2009.

Larsson, P.-E., Björklund, N., Långström, B., Gustavsson, K. & Örlander, G. (2009) Granbarkborrar, fångstvirkesfällor och angripen skog. Poster presentation at Skogskonferensen  in Uppsala, Sweden.

Långström B, Lindelöw Å, Schroeder M, Björklund N, Öhrn P (2009) The spruce bark beetle outbreak in Sweden following the January-storms in 2005 and 2007. In: Kunca A, Zubrik M (eds.) Insects and Fungi in Storm Areas. Proceedings of the IUFRO Working Party 7.03.10 Methodology of Forest Insect and Disease Survey in Central Europe, workshop held on September 15-19, 2008, Štrbské Pleso, Slovakia, p. 13-19.

Öhrn, P., Långström, B. & Björklund, N. (2009) Flight activity of the spruce bark beetle Ips typographus in southern Sweden. In: Kunca A, Zubrik M (eds.) Insects and Fungi in Storm Areas. Proceedings of the IUFRO Working Party 7.03.10 Methodology of Forest Insect and Disease Survey in Central Europe, workshop held on September 15-19, 2008, Štrbské Pleso, Slovakia, p. 148.

Björklund, N. (2009) Effektivare barkning minskar borreangrepp. Skogsland, nr.10, p. 5. (interview).

Björklund, N. & Långström, B. (2008) Hur effektiva är fångstvirkeshögar? - Slutrapport till Skogsstyrelsen från projektet ”jämförelse av fångsteffekt mellan feromonfällor och fångstvirkesfällor” 12 p.

Björklund, N. (2008) Hur effektiva är fångstvirkeshögar? SkogsEko 3, 6-7.

Björklund, N. (2008) Utvärdering av barkning av vindfälld gran som en bekämpningsåtgärd mot granbarkborre. Rapport till Länsstyrelserna i Hallands och Jönköpings län, 4 p.

Björklund, N., Hannrup, B. & Jönsson, P. (2008) Effekter av förhöjt knivtryck i skördaraggregat på barkskadorna hos massaved och följdeffekter på produktionen av granbarkborrar. Arbetsrapport från Skogforsk nr 668, 36 p

Effektivt med fångstvirkesfällor (2008) Södra kontakt, issue 1, p. 13.

Långström, B. & Björklund, N. (2007) Kan man minska granbarkborreskador med fångstvirkesfällor? Rapport till Skogsstyrelsen, 12 p..

Björklund, N. (2006) Sensory cues for shelter use. In N. Kamata, A.M. Liebhold, D.T. Quiring & K.M. Clancy (Eds.) Forest Insect Population Dynamics and Host Influences Proceedings IUFRO Kanazawa 2003. p. 139.

Björklund, N. (2004) Snytbaggens “torgskräck” ren myt, SkogsEko 2/2004,  (interview)

Björklund, N. (2004) Movement behaviour and resource tracking in the pine weevil Hylobius abietis. Doctoral Thesis, Swedish University of Agricultural Sciences, Uppsala. Acta Universitatis Agriculturae Sueciae, Silvestria 302, ISSN 1401-6230, ISBN 91-576-6536-2. p. 1-17.

Björklund, N. (2003) Pine weevil - Host-plant acceptance on mineral soil and humus. Poster presentation at the IUFRO-meeting Forest Insect Population Dynamics and Host Influences, Kanazawa University, Kanazawa, 14-19 September 2003.

Björklund, N & Nordlander, G. (2001) Snytbaggen hittar alla plantor!, PLANT aktuellt, 1, 5

Björklund, N. & Vouti, J. (1997) The significance of the eye-combs in male-male signalling and female choice in the black grouse. MSc-thesis. Supervisor: Jacob Höglund. Department of Zoology, Uppsala University. p. 1-16.

YouTube clip The pine sawyer beetle Monochamus sutor, a potential vector of Bursaphelenchus xylophilus

 

 


Contact
Analyst at the Department of Ecology; Forest Ecology Unit
Telephone: 018-672879, 070-5082879
Postal address:
Inst för Ekologi, Box 7044
750 07 UPPSALA
Visiting address: Ulls Väg 16, Uppsala