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Life history traits in a cyclic ecosystem: a field experiment on the arctic fox

Life history traits in a cyclic ecosystem: a field experiment on the arctic fox. Tomas Meijer • Bodil Elmhagen • Nina E. Eide • Anders Angerbjörn. http://500px.com/photo/13345233. Background. http://www.environment.no/Topics/Biological-diversity/Arctic-fox/. Lemmings and cycles.

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Life history traits in a cyclic ecosystem: a field experiment on the arctic fox

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  1. Life history traits in a cyclic ecosystem: a field experiment on the arctic fox Tomas Meijer • Bodil Elmhagen • Nina E. Eide • Anders Angerbjörn http://500px.com/photo/13345233

  2. Background http://www.environment.no/Topics/Biological-diversity/Arctic-fox/

  3. Lemmings and cycles

  4. Foxes of study • Lemming Foxes • Coastal Foxes http://www.artflakes.com/en/products/arctic-fox-with-lemming http://www.usask.ca/biology/goose/foxgoose.html

  5. hypothesis • A = food limiting hypothesis • B = life history hypothesis

  6. Methods & Location Population structure in a critically endangered arctic fox population: does genetics matter? Vindelfjällen • Borgafjäll/Børgefjell Helags Molecular EcologyVolume 15, Issue 10, pages 2809-2819, 23 JUN 2006 DOI: 10.1111/j.1365-294X.2006.02983.xhttp://onlinelibrary.wiley.com/doi/10.1111/j.1365-294X.2006.02983.x/full#f1

  7. Results

  8. Results

  9. Discussion and findings Warmer Climate Predicted to cause changes in rodent cycles Problems changes in rodent cycle cause arctic foxes • Decreased litter size • Decrease number of litters • Decrease survival rate of young • http://ignacioyufera.photoshelter.com/image/I0000D5hZ8B3Tc6w

  10. Future Directions • Research how female arctic foxes are able to control litter size according to rodent population sizes • The impact fading rodent cycles have on other arctic carnivores http://www.treehugger.com/clean-technology/arctic-predators-hit-hard-by-climate-change.html http://galleryhip.com/arctic-fox-wallpaper.html

  11. Questions ? http://geekinthebreeze.wordpress.com/2013/09/15/wednesday-woof-alopex lagopus-edition/

  12. References • Meijer, T., B. Elmhagen, N.E. Eide, and A. Angerbjörm. 2013. Life history traits in a cyclic ecosystem: a field experiment on the arctic fox. Population Ecology. 173: 439-447 • Elmhagen, B., M.Tannerfeldt, P. Vaerucci, and A.Angerbjörn. 2000. The arctic fox (Alopexlagopus): an opportunistic specialist. The zoological Society of London. 251: 139-149 • Kjellander P., and J. Nordström. 2003. Cyclic voles, prey switching in red fox, and roe deer dynamics – a test of the alternative prey hypothesis. Oikos 101: 338- 344 • Lehikoinen, A., E. Ranta, H. Pietiäinen, P. Byholm, P. Saurola, J. Valkama, O. Huitu, H. Henttonen, and E. Korpimäki, .2011. The impact of climate and cyclic food abundance on the timing of breeding and brood size in four boreal owl species. Population Ecology 165: 349-355 • Ims, R.A., N.G. Yoccoz, and S. T. Killengreen. 2011. Determinants of lemming outbreaks. Proceedings of the Naional Academy of Sciences of the United States of America. 108: 1970-1974 • Elmhagen, B., P. Hellström, A. Angerbjörn, and J. Kindberg. 20011 Changes in vole and lemming fluctuations in northern Sweden 1960-2008 revealed by fox dynamics. AnnalesZoologiciFennici, 48 (3): 167-179 • Dalen L., K. Kvaløy, J.D.C. Linnell, B. Elmhagen, O. Strand, M. Tannerfeldt, H. Henttonen, E. Fuglei, A. Landa, and A. Angerbjorn. 2006. Population Structure in a critically endangered arctic fox population: does genetics matter? Molecular Ecology 15: 2809-2819 • Anders Angerbjörn, Nina E. Eide, Love Dalén, BodilElmhagen, Peter Hellström, Rolf A. Ims, SiwKillengreen, ArildLanda, Tomas Meijer, MattiMela, JukkaNiemimaa, Karin Norén, Magnus Tannerfeldt, Nigel G. Yoccoz, HeikkiHenttonen. 2013. Carnivore conservation in practice - replicatedmanagement actions on a large spatial scale. Journal of Applied Ecology 50: 59-67.

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