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 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
Finished: Stefano Chiari, Alejandro Ruete, Maria Koch-Widerberg, Måns Svensson, Simon Kärvemo
As host for post docs:
Finished: Heidi Paltto, Alexandro Caruso, Martin Hallinger, Laia Mestre, Fabien Laroche, Matthew Hiron, Victor Johansson, Anna Filyushkina
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., Felton, A. (2018). The effects of logging residue extraction for energy on ecosystem services and biodiversity: A synthesis. Journal of Environmental Management 209: 409-425.
Ranius, T., Rudolphi, J., Sténs, A., Mårald, E. (2017) Conflicting demands and shifts between policy and intra-scientific orientation during conservation research programmes. Ambio 46: 621-629.
Fourcade, Y., Ranius, T., Öckinger, E. (2017) Temperature drives abundance fluctuations, but spatial dynamics is constrained by landscape configuration: implications for climate-driven range shift in a butterfly. Journal of Animal Ecology 86: 1339-1351.
Ranius, T., Korosuo, A., Roberge, J.-M., Juutinen, A., Mönkkönen, M., Schroeder, M. (2016) Cost-efficient strategies to preserve dead wood-dependent species in a managed forest landscape. Biological Conservation 204: 197-204
Felton, A., Gustafsson, L., Roberge, J.-M., Ranius, T., Hjältén, J., Rudolphi, J., Lindbladh, M., Weslien, J., Rist, L., Brunet, J., Felton, A.M. (2016) How climate change adaptation and mitigation strategies can threaten or enhance the biodiversity of production forests: Insights from Sweden. Biological Conservation 194: 11-20.
Rubene, D., Schroeder, L.M., Ranius, T. (2015) Diversity patterns of wild bees and wasps in managed boreal forests: Effects of spatial structure, local habitat and surrounding landscape. Biological Conservation 184: 201-208.