Senior Researchers

Competence Areas
Current Research

Anders Jäderlund

My research is dealing with ground vegetation and its importance for the function of boreal and alpine ecosystems. The aim is to better understand how ericaceous dwarf shrubs and mosses are affecting and interacting with each other and with other ecosystem components such as tree seedlings and mycorrhiza fungi.

Current research activities:

Cyanobacteria living in association with feather mosses are fixing nitrogen and contribute to the build up of the nitrogen pool in boreal forest ecosystems. I am studying nitrogen fixation in intact and steam treated feather mosses; the influence of nitrogen fixation on tree seedling growth and; mechanisms for transport of biological fixed nitrogen from mosses to planted tree seedlings.
The production and quality of forest berries, mostly bilberry (Vaccinium myrtillus), in relation to environmental factors.
Long term effects of stump harvest on the ground vegetation and other ecosystem components.
Steam treatment as an alternative to traditional site preparation methods in forestry.

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Anders Karlsson

Dr in Forestry (Silviculture) 1995
Associate Professor in Forest Management 2001
Director of studies at the Faculty of Forest Sciences 2002

Position
Today, I am working half-time as director of studies at the Faculty of Forest Sciences, and half-time with research and teaching at the Department of Forest Ecology and Management. My research concerns: 1) precommercial thinning; 2) tropical rain forest silviculture; 3) afforestation of former farmland.

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Anders Malmer

Anders Malmer - Professor of Tropical Forest Ecology and Management - Soil Science

I have three major activities in my agendas; 1) Research including PhD supervision, 2) Undergraduate teaching and 3) Department management.
As researcher I am leading the the department competence area "Tropical Forestry" which is part of the Faculty competence area "International Forestry". My speciality is effects of land use on water and nutrients in soils and eco/cultivation sytems at large. Typically the expertise and research questions are biophysical, but in our research group we put emphasis on working in a context of applicability into development of poor countries and poor rural people and forest users. For examples of this see below.
In Undergraduate teaching I mainly teach basic soil science and eclogy for our students of MSc in Forestry (Jägmästarstudenter). These are broad courses where I enjoy to share basics of systems ecology and environmental impacts of forestry with the students. In these courses the global experience is an asset to give examples and put things into perspective of how processes work and vary in regions, nationally and globally. I also teach on higher level MSc courses like "Soils of the world - classification and management" and "Ecology and management of forest soils".
As Deputy head of department I am mainly stand in for Peter Högberg when he is out of office and take part in the general discussions in the "head of department group", but I also have delegated responisbility for saftey at the department and the department "cooperation group" (samverkansgrupp). You can find the meeting notes of the group and the department saftey policies as well as evacuationplan at the internal web pages.

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Anders Ohlsson

Current research interest
Estimation of uncertainties in measurements of the carbon isotopic ratio (¹³C/¹²C) of CO₂ respired from soils using isotope ratio mass spectrometry. The ultimate goal is to contribute to more reliable ecosystem models for carbon cycling by improvements of data quality.

1. Ohlsson, KEA et al., 2005. Soil Biol. Biochem. 37: 2273-2276. Uncertainties in static closed chamber measurements of the carbon isotopic ratio of soil-respired CO₂.
2. Ohlsson, KEA, 2009. Rapid Commun. Mass Spectrom. 24: 180-184. Reduction of bias in static closed chamber measurement of δ¹³C in soil CO₂ efflux.

Recent professional activities

Research; within analytical chemistry and soil sciences, including mathematical models
Chemical analyses; especially mass spectrometry of stable isotopes and atomic spectrometry

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Ann Dolling

Most of my current research is carried out in the multidisciplinary research program Forest and Health and focuses on exploring if the forest could be used to improve human health. The research focuses on exploring if forest visits can improve the health of people suffering from mental fatigue and if the forest can be used for rehabilitating purposes. The objective is also to study which kind of forests that are preferred and which characteristics these forests comprise. Another aim is to compare the restorative effects of the forest, the garden and the handicraft therapy. Are there differences in restoration between a milieu with or without vegetation? In a another multidisciplinary project, focused on family forest ownership from a local development perspective, the objective is to examine potentials and constrains in different business practices based on family forest properties. Green care carried out as rehabilitation in the forest is one business practice examined in the project.

Another part of my research aims on reforestation issues. The objective is to study the impact of field layer species on tree seedling establishment and resource competition. One aim is to study how steam can be an effective site preparation method.

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Björn Elfving

I am professor in forest growth and yield since 1983 and have been working in this field since my master exam in 1968. My research is focussed on growth modelling from stand establishment over the whole rotation and I have had the opportunity to establish a lot of long-term experiments that now underpin the modelling for the Heureka project (www.heureka.se). The exotic species lodgepole pine has been introduced in large scale in our forests and I have especially examined its properties and productivity compared to the native Scots pine. In the last years I have studied models for the stand dynamics of natural forsts in forest reserves and continuous cover forestry, as well as the thinning response in thinning experiments. Several of our long-term experiments concerns spacing and selectivity, and a new PhD student will be directed on effects of genetic and phenotypic selection on the performance of the new stands.

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Björn Gunnarson

I use dendroclimatological methods, i.e. extracting climate signals from tree-rings. I collect tree-ring data from a wide range of environments where tree growth is limited by different climatic parameters, e.g. temperature, precipitation to reconstruct past climates and gain understanding of past climate variability, but also to look at ecological effects of climate change on sensitive forest ecosystems.
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Björn Hånell

Dr Forest Ecology, Docent and Professor of Silviculture

My special competences are within peatland forest science, silvicultural systems, and cycle adapated forest fertilization (biofuel ash to peatlands, pelletized sludge to mineral soils). I am the Coordinator of IUFRO Division 1 Silviculture, and First Vice President of International Peat Society (IPS).

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Daniel Metcalfe

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David Wardle

The research carried out by my colleagues and myself is focused on exploring the links between aboveground and belowground communities, and how these in turn drive the functioning of terrestrial ecosystems. This involves both field and laboratory based studies, and most of the field work is performed in Swedish boreal forest and subarctic tundra communities and in New Zealand rainforests. Current projects focus on the community and ecosystem effects of invasive animals, the ecological consequences of wildfire, ecosystem succession and retrogression, aspects of island ecology, and how changes in the species composition of plant communities influence aboveground and belowground processes.

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Forest Ecology & Management