Habitat requirements and preservation of the beetle community associated with hollow oaks at a landscape level
Short presentation of me
Projects and questions
What method works best for collecting different saproxylic beetle species living on hollow oaks?
How important is the light conditions and the size of the oak tree for the species composition?
Is it possible to create artificial hollow trees? And if yes, how far from a dispersal source can saproxylic beetles colonize them?
Jansson, N., Ranius, T., Larsson, A. & Milberg, P. 2009. Boxes mimicking tree hollows can help conservation of saproxylic beetles. – Biodiversity & Conservation 18, 3891–3908.
Can we find species indicating high species richness of red-listed beetles in old oaks?
Jansson, N., Bergman, K-O., Jonsell, M. & Milberg, P. 2009. An indicator system for identification of sites of high conservation value for saproxylic oak ( Quercus spp.) beetles in southern Sweden . – Journal of Insect Conservation 13: 399-412.
How much can saproxylic oak beetles gain from habitats on other tree species?
To understand the importance of other tree species for saproxylic beetles living on oak (Quercus robur) at a landscape level we compare the fauna caught with traps in and on old hollow trees of Tilia, Fraxinus and Hippocastanea with Quercus in southern Sweden. In Sweden we often find the other trees in avenues allong roads. Preliminary results show a high overlap between the four studied tree species.
How similar is the saproxylic beetle fauna living on old living oaks with dead fallen oak logs?
To get a picture of the saproxylic beetle fauna living on old oaks and dead fallen oak logs we used window traps during one season in an oak landscape in southern Sweden. Preliminary results show a smaller overlap than we expected between the species communities.
How rich are the saproxylic beetle fauna on old oaks in Turkey?
Turkey are a country with high diversity in many animal and plant groups. There are at least 18 species of Oaks (Quercus spp) in Turkey. The fauna living on these trees are poorly studied. The habitats with old oaks are threatened by forestry activities and we aim to reveal the high biodiversity. From 2005 I have (together with entomologists from five Turkish Universities (Cukurova University in Adana, Adiyaman University, Antakya University, Suleyman Demirel University in Isparta and Balikesir University) studied the saproxylic beetle fauna of old oaks in Turkey. So far we have studied the fauna in 10 oak areas and have nearly completed the identification the beetles from four of the areas. The species lists are very long and the result are very interesting. So far we have described 25 new species to science.
- Ruzieka, J., Jansson, N. & Coskun, M. 2006. Complementary description of Catops hanusi (Coleoptera: Leiodidae: Cholevinae), with notes on its bionomy and occurrence in Turkey . Entomol. Probl. 36(2): 43-46.
- Schillhammer, H., Snäll, S., Coskun, M. & Jansson, N. 2007. The West Palearctic species of Hesperus Fauvel, 1874, with description of three new species from Turkey (Coleoptera: Staphylinidae: Staphylininae). - Koleopterologische Rundschau 77: 123- 132.
- Novak, V., Jansson, N., Avci, M., Sarikaya, O., Coskun,, M., Atay, E. & Gürkan, T. 2011. New Allecula species (Coleoptera: Tenebrionidae: Alleculinae) from Turkey studies and reports. - Taxonomical Series 7: 335-346.
- Platia, G., Jansson, N., Avci, M., Sarikaya, O., Coskun, M. & Kayis, T. 2011. New species of click beetles from Turkey (Coleoptera, Elateridae). - Boletín de la Sociedad Entomológica Aragonesa 48: 207-215.
- Sama, G., Jansson, N., Avci, M., Sarikaya, O., Coskun, M., Kayis, T, & Özdikmen H. 2011. Preliminary report on a survey of the saproxylic beetle fauna living on old hollow oaks (Quercus spp.) and oak wood in Turkey. - Munis Entomology and Zoolology 6: 819-831.
- Avgin, S.S, Magri, D., Antonini, G., Mancini, E,. Jansson, N., Lason, A., Cline, A.R. & Audisio, P. 2012. Review of the cedar och oak forest-associated Epuraea latipes species group (Coleoptera: Nitidulidae, Epuraeinae), with description of a new species from southern Turkey . – Entomol. Fenn. 23: 49-62.
How similar is the saproxylic beetle fauna on oaks in different parts of Europe and Mediterranean region?
Together with entomologists from Turkey, Italy, Spain, France, UK, Czech republic, Poland and Israel we will compare my Swedish studies with their similar studies of the saproxylic beetle fauna on old Oaks.
Responsible for this page: Per Jensen
Last updated: 08/21/13