Who we are

Forest ecophysiology includes nitrogen nutrition of plants in general and of forest plants in particular and its key role in boreal forest ecosystems.

We have a strong focus on method development and have access to a unique toolbox ranging from molecular methods for studying the expression of key genes for nitrogen uptake to field-applied microdialysis techniques for studying soil nitrogen fluxes.

Research group leader:

Torgny Näsholm, professor

In the Forest history research group, we focus on understanding how forest ecosystems have developed in Northern Scandinavia by exploring people and forests historically from a long-term perspective. 

Research group leader: 

Lars Östlund, professor

Forest landscape biogeochemistry includes the hydrology and biogeochemistry of forested watersheds and the speciation, mobility and bioavailability of trace metals.

Our major research objectives are to understand the biogeochemical transformation and cycling of energy, water, carbon, nitrogen and other elements in the boreal landscape. Much of our research is focused on the exchange processes between ecosystems and the atmosphere and hydrosphere respectively. A critical tool in our research is close access to a number of intensively instrumented research field sites. We work across spatial scales from the molecular level to the landscape level. 

Research leader: 

Hjalmar Laudon, professor.

This subject area includes studies on the effects of natural disturbances, climate change and forest management on ecological processes underlying forest regeneration in boreal forests. The key factors of interest are the responses of understory vegetation (ericaceous dwarf shrubs and mosses) and soils controlling early seedling establishment and growth.

We also study the interactive effects of management, wildfire and climate warming on the early development of conifer and broadleaved forest stands, and how these interactions impact the biotic and abiotic environment in the vicinity of the tree seedling.

Research leader: 

Marie-Charlotte Nilsson Hegethorn, professor

Forest soils encompasses several subdisciplines; in our case especially plant-soil relations, geochemistry and pedology. A major focal area is interactions among soils, microbes and plants, and their implications for forest nutrition management, long-term productivity and the carbon balance. 

Another major focal area is the biogeochemistry of mercury in soils, especially the effects of forest activities and restoration of wetlands. Our studies are based on detailed analysis in the laboratory, e.g. involving X-ray absorption spectroscopy to reveal the chemical speciation and linkage between mercury, sulfur and iron geochemistry, and very intensive pulse-chase isotope labelling experiments to study the cycles of nitrogen and carbon directly in the field. 

Research leaders:
 

Jonatan Klaminder, professor

Ulf Skyllberg, professor

Our research aims to integrate these themes as much as possible, to provide an understanding of how forest community structure interacts with ecosystem processes.  We aim for our research to contribute to solving issues important to society, including preservation of biodiversity and ecosystem functioning, forest resilience in response to climate change, and sustainable use of forest resources.   

Research leader:

Michael Gundale, professor

Silviculture includes silvicultural systems and forest management operations, with focus on the boreal and tropical region.

The aim of silvicultural research is to evaluate the effects of forestry practices, like regeneration, pre-commercial thinning, thinning, fertilization, and felling, on the future development of forests. The research is based on long-term field experiments, survey-studies, laboratory experiments, and simulations. The department is responsible for the development of knowledge for forming silvicultural practices and systems, which enable a sustainable use of the forest resource. The topic is central to the department's education, at both undergraduate and graduate level.

Research group leaders:

Gustaf Egnell, associate professor

Ulrik Ilstedt, researcher