Department of Physics, Chemistry and Biology (IFM)
SE-581 83 Linköping
Cellphone: +46 733 79 80 10
- Threatened species and species conservation
- Landscape ecology, metapopulation dynamics
- Lichens, bryophytes, fungi, vascular plants, the beetle Tenebrio opacus
About me and my background:
I watched birds and I was fascinated of plant identification from teen ages. I started with vascular plants, and continued with lichens, bryophytes and fungi. After a master´s degree in biology I worked as nature conservation consultant during three years with e.g. field surveys in various terrestrial habitats and of various organisms, for biodiversity monitoring, for conservation planning and for Environmental Impact Assessments. As a researcher I work mainly with research that hopefully will end up with knowledge that may be used to design actions leading to viable populations of red-listed species.
Degrees: Master degree 1998, PhD 2008
Positions: PhD-studies and teaching at Gothenburg University 2001-2008; research and teaching at Skövde University 2008-2009; postdoc fellowship at the Swedish University of Agricultural Sciences in Uppsala 2009-2011, Research Associate at Linköping University 2011-2013.
Effects of woodland restoration on red-listed epiphytic lichens
The aim of this project is to gain knowledge about dispersal, establishment, growth and extinction of red-listed epiphytic lichens as a response to restoration in woodlands. We have surveyed two hot spot areas for red-listed lichens in years 2010-2011 before the restoration 2011 and we plan to resurvey the same areas in 2014. In each area we surveyed all trees in a restoration plot; in a nearby reference plot without restoration actions; and in the surrounding landscape within a circle radius of 800 meters.
Collaborators: Liselott Skarp-Sjödin and Mårten Gustavsson (both at County Administration Board in Västmanland), Björn Nordén, Jenny Wendel
Evaluating the long-term survival of an endangered beetle (Tenebrio opacus) living in hollow trees
The main aim of this project is to provide better understanding of the long-term dynamics of an endangered beetle, Tenebrio opacus, living in large hollow trees. We have marked and recaptured this beetle on 406 hollow trees in two areas in Östergötland: Bjärka-Säby (4 km x 5 km) and Räckeskog (2 km x 6 km). We surveyed all trees during 2010, and during the other years 2007-2011 we surveyed a subset of the trees. This work was the main theme in my postdoc-project at Swedish University of Agricultural Sciences, but the project is now extended to a few years after the postdoc.
Collaborator: Thomas Ranius, Swedish University of Agricultural Sciences
Biodiversity, biofuels and management in dense oak forests
I am part of a research group based in Gothenburg, studying biodiversity in oak forests, and my PhD-studies were done within this project. The project started year 2000 and is planned to continue to year 2020. We established permanent plots in 25 forest stands in southern Sweden in 2000, where we conducted surveys before and after an experimental cutting year 2002/2003, in both control and cutting plots. Currently I work with evaluating effects of partial cutting on forest floor bryophytes and epiphytic lichens. We have also used data from before cutting to studies of local and landscape effects on local biodiversity and in studies exploring relationships in total species richness, richness of indicator species and richness of Red Data Book species.
The core group consists of professor Frank Götmark (Department of Zoology, Gothenburg University), PhD Björn Nordén (The Norwegian Institute for Nature Research, Oslo), PhD Bjørn Økland (Skogforsk, Ås, Norway), PhD Niclas Franc (Department of Zoology, Gothenburg University) and PhD Ted von Proschwitz (Museum of Natural History, Gothenburg) and me. I collaborate with Alexandro Caruso at the Swedish University of Agricultural Sciences, Björn Nordén and Frank Götmark within the sub-project on forest floor bryophytes, and with Björn Nordén, Christina Claesson and Frank Götmark within the sub-project on epiphytic lichens.
Multispecies and multi-scale conservation planning: Setting quantitative targets for red-listed lichens on ancient oaks
We studied how species of conservation concern (mainly red-listed species) were affected by secondary woodland and the number of oaks in the surrounding landscape. In one research article we give hands-on recommendations about minimum numbers of oaks and minimum spatial scales of landscape that are needed for species conservation. In another article we found that the richness of red-listed lichens on ancient oaks in secondary woodlands is half of the richness on oaks in open conditions.
Collaborators: Ingrid Thomasson (master thesis within the project), Anna Nordberg (master thesis within the project), Björn Nordén, Tord Snäll
Nordén, B., Paltto, H., Claesson, C., Götmark, F. (conditionally accepted) Partial cutting can enhance epiphyte conservation in temperate oak-rich forests. Forest Ecology and Management.
Bengtson, O., Paltto, H. (conditionally accepted) Förändringar i moss- och lavfloran på solitära lövträd under 17 år I Härryda kommun [Bryophyte and lichen flora on solitary trees: Changes during 17 years; with English summary]. Svensk Botanisk Tidskrift.
Paltto, H., Nordberg, A., Nordén, B. & Snäll, T. 2011. Development of oak wood pastures into secondary woodland reduces the richness of rare epiphytic lichens. PLoS ONE 6(9):e24675.
Schroeder, L. M., Sahlin, E., Paltto, H. 2011. Retention of aspen (Populus tremulae) at final cuttings – The effect of dead wood characteristics on saproxylic beetles. Forest Ecology and Management 262:853-862.
Paltto, H., Thomasson, I., Nordén, B. 2010. Multispecies and multiscale conservation planning: Setting quantitative targets for red-listed lichens on ancient oaks. Conservation Biology 24:758-768.
Eriksson, M. O. G., Paltto, H. 2010. Water chemistry and the composition of fish stocks in the breeding lakes of Black-throated Diver Gavia arctica, and a comparison with the fishing lakes of Red-throated Diver Gavia stellata [in Swedish; with English summary]. Ornis Suecica 20:3-30.
Fröberg, L., Niklasson, M., Paltto, H., Knutsson, T., Johansson, T. 2009. Age and epiphytic lichen diversity of the dwarf shrub Helianthemum oelandicum on the island of Öland, Sweden. The Lichenologist 41(5):1-9.
Nordén, B., Götmark, F., Ryberg, M., Paltto, H., Allmér, J. 2008. Partial cutting reduces species richness of fungi on woody debris in oak-rich forests. Canadian Journal of Forest Research 38:1807-1816.
Paltto, H., Nordén, B. & Götmark, F. 2008. Partial cutting as a conservation alternative for oak Quercus spp. forest – response of bryophytes and lichens on dead wood. Forest Ecology and Management 256: 536-547.
Frank, N., Götmark, F., Økland, B., Nordén, B. & Paltto H. 2007. Factors and scales potentially important for wood-living beetles in temperate mixed oak forests. Biological conservation 135:86-98.
Nordén, B., Paltto, H., Götmark, F. & Wallin, K. 2007. Indicators of biodiversity, what do they indicate? – Lessons for conservation of cryptogams in oak-rich forest.Biological conservation 135:369-379.
Paltto, H., Nordén, B., Götmark, F. & Franc, N. 2006. At which spatial and temporal scales does landscape context affect local density of Red Data Book and Indicator species? Biological conservation 133: 442-454.
Götmark, F., Paltto, H., Nordén, B. & Götmark, E. 2005. Evaluation of partial cutting in broadleaved temperate forest under strong experimental control: Short-term effects on herbaceous plants. Forest Ecology and Management 214: 124-141.
Nordén, B & Paltto, H. 2001. Wood-decay fungi in hazel wood: species richness correlated to stand age and dead wood features. Biological Conservation 101: 1-8.