My research aims at contributing to the knowledge needed to make decisions related to biodiversity. The applied research is mainly about the effect on biodiversity and ecosystem services (especially recreational values) of forestry, nature conservation, and climate change. I also conduct research in spatial ecology focusing on species of conservation interest, especially beetles associated with old trees and dead wood. It aims at generating knowledge needed as input to the applied research. The research consists of empirical studies, simulations, and syntheses.
I am leading a course in Forest Conservation Biology. That is a distance course at an advanced level.
I am currently the leader of three research projects.
Professor in conservation biology at Swedish University of Agricultural Sciences (2018)
Professor in ecology at Swedish University of Agricultural Sciences (2012)
Associated professor in ecology at Swedish University of Agricultural Sciences (2004)
Ph D in zoology at Lund university (2000)
As main supervisor for Ph D student
Ongoing: Carl Lehto
Finished: Victor Johansson (2012), Diana Rubene (2014), Francesca Santaniello (2017)
As co-supervisor for Ph D students
Ongoing: Björn Eriksson, Ellinor Ramberg
Finished: Stefano Chiari, Alejandro Ruete, Maria Koch-Widerberg, Måns Svensson, Simon Kärvemo
As host for post docs:
Lindman, L., ... Ranius, T. (2020) Metapopulation dynamics over 25 years of a beetle, Osmoderma eremita, inhabiting hollow oaks. Oecologia 194: 771-780.
Felton, A., ... Ranius, T. (2020). Keeping pace with forestry: Multi-scale conservation in a changing production forest matrix. Ambio 49: 1050-1064.
Hämäläinen, A., Strengbom, J., Ranius, T. (2020) Low-productivity boreal forests have high conservation value for lichens. Journal of Applied Ecology 57: 43-54.
Leverkus, A.B., Gustafsson, L., Lindenmayer, D.B., ... Ranius, T., Thorn, S. (2020) Salvage logging effects of regulating ecosystem services and fuel loads. Frontiers in Ecology and the Environment, in press
Ranius, T., Hämäläinen, A., Sjögren, J., Hiron, M., Jonason, D., Kubart, A., Schroeder, M., Dahlberg, A., Thor, G., Jonsell, M. (2019). The evolutionary species pool concept does not explain occurrence patterns of dead-wood-dependent organisms: implications for logging residue extraction. Oecologia 191: 241-252.
Sténs, A., Roberge, J.-M., Löfmarck, E., Beland Lindahl, K., Felton, A., Widmark, C., Rist, L., Johansson, J., Nordin, A., Nilsson, U., Laudon, H., Ranius, T. (2019) From ecological knowledge to conservation policy: a case study on green tree retention and continuous-cover forestry in Sweden. Biodiversity and Conservation 28: 3547-3574.
Hämäläinen, A. Strengbom, J., Ranius, T. (2018) Conservation value of low-productivity forests measured as the amount and diversity of dead wood and saproxylic beetles. Ecological Applications 28: 1011-1019.
Laroche, F., Paltto, H., Ranius, T. (2018) Abundance-based detectability in a spatially-explicit metapopulation: a case study on a vulnerable beetle species in hollow trees. Oecologia 188: 671-682.
Mestre, L. Jansson, N., Ranius, T. (2018) Saproxylic biodiversity and decomposition rate decrease with small-scale isolation of tree hollows. Biological Conservation 227: 226-232.
Ranius, T., Hämäläinen, A., Egnell, G., Olsson, B., Eklöf, K., Stendahl, J., Rudolphi, J., Sténs, A., Felson, A. (2018) The effects of logging resiude extraction for energy on ecosystem services and biodiversity: A synthesis. Journal of Environmental Management 209: 409-425.