My research is mainly at the intersection of ecology and conservation biology. We live in a time of rapid changes in the living environments of species and because of this many species are declining and/or threatend by extinction. These species naturally differ quite alot in regard to life history, but does this also mean that the extinction process is different? I am studying aspects of this problem by looking at how life history traits and other species specific characters are related to extinction risks. To approach this question I use both comparative studies between extinction risk and species characteristics, and theoretical population models. I am also working with ways to use information from Natural History Collections (Citizen science data) to estimate population trends and changes in range, mainly using a dataset of Longhorn beetles (Cerambycidae). Currently I'm using this dataset to study the relationship between climate change and changes in range and/or phenology, and how this interacts with species traits.
I've recently finished a postdoc period at the Centre for Ecological and Evolutonary Synthesis at the University of Oslo.
Let me know if you want a pdf copy of any of the papers.
Van Oosten, van den Burg, Arlt, Both, Brink, Jeppsson, de Kroon, Traag, Siepel. 2015. Dioxin accumulation in terrestrial food chains affects a songbird in nature reserves with low soil pollution. In: Van Oosten. On the brink of extinction: biology and conservation of Northern Wheaters in the Netherlands. PhD thesis. Radboud University, Nijmegen.
Jeppsson, T. & Forslund, P. 2014. Species traits explain differences in Red list status and
long-term population trends in longhorn beetles. Animal Conservation 17(4): 332–341. doi: 10.1111/acv.12099 (abstract) (data) (poster).
Snäll, T. Forslund, P. Jeppsson, T., Lindhe, A., O'Hara, B. 2014. Evaluating temporal variation in Citizen Science Data against temporal variation in the environment. Ecography, 37(3): 293-300. doi: 10.1111/j.1600-0587.2011.00544.x (Available online Nov. 2013)
Jeppsson, T. & Forslund, P. 2012. Can life history predict the effect of demographic stochasticity on extinction risk? The American Naturalist, 179(6): 706-720. (pdf)
Lindhe, A., Jeppsson, T., Ehnström, B. 2010. Longhorn beetles in Sweden - changes in distribution and abundance over the last two hundred years. Entomologisk tidskrift, 131(4): 241-510. (pdf summary)
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Jeppsson, T., Lindhe, A., Gärdenfors, U., Forslund, P. 2010. The use of historical collections to estimate population trends: A case study using Swedish longhorn beetles (Coleoptera: Cerambycidae). Biological conservation, 143 (9): 1940-1950. (pdf)
Arlt, D., Forslund, P., Jeppsson, T. & Pärt, T. 2008. Habitat-specific population growth of a farmland bird. PLoS ONE 3, e3006. doi:10.1371/journal.pone.0003006. (pdf)
Jeppsson, T. 2010. Empirical and Theoretical Studies of Population Trends and Extinction Risks. Acta Universitatis agriculturae Sueciae 2010:41. Uppsala. Doctoral dissertation. Department of Ecology, Swedish University of Agricultural Sciences. (pdf)
Jeppsson, T., 2004, Natural selection on floral traits in Aconitum lycoctonum (Ranunculaceae) in different regions of its distribution, with special regard to the presence/absence of Bombus consobrinus (Hymenoptera), Master thesis, Department of Studies in Biology and Environmental Sciences, Umeå University, Sweden. (pdf 344 kB).
Jeppsson, T. et al. 2016. Oh, how we pick and choose: on theoretical constructs in subfields of ecology. At: Nordic Oikos conference 2016, Turku 2 Feb 2016. Oral presentation.
Jeppsson, T., Forslund, P. 2013. Species traits explain differences in Red list status and long-term population trends. At : 11th INTECOL Congress, Ecology: Into the next 100 years, 18-23 August . London. Poster. http://dx.doi.org/10.6084/m9.figshare.787683
Jeppsson, T., Lindhe, A., Forslund, P. 2012. The use of historical collections to estimate population trends. At: 3rd European Congress of Conservation Biology, 31 August 2012. Glasgow. Oral presentation.
Jeppsson, T. Populationsutvecklingen hos långhorningar i Sverige – en historisk utblick. At: Flora och faunavård 2011. Uppsala. Invited speaker. Video at "UR samtid". (länk)
Jeppsson, T. 2009. Stochasticity in the extinction process. Introductory research essay. Department of Ecology, Swedish University of Agricultural Sciences. No. 11. Uppsala. (pdf)