Transport processes, freezing, embolism
My research is on tree structure and function, especially on transport processes within the tree and on the challenges these processes face in different environments. My special interest is on freezing behavior of wood.
Photosynthesis, gas exchanges, remote sensing
My background is on plant physiology and light, and my research has been focused on characterising temporal dynamics in biochemical and biophysical mechanisms in leaves of boreal trees that uncouple remotely sensed data from photosynthetic gas exchange.
Atmosphere-biosphere interactions, planetary boundary layer oxidation processes, emissions of biogenic volatile organic compounds, boreal ecosystem
My main research topic is to investigate the drivers of both induced and constitutive production and emission of biogenic volatile organic compounds from trees and forest floor and how these emissions influence the chemical composition of the atmosphere. It is very important to study these aspects, since biogenic volatile organic compounds influence atmospheric aerosol formation and growth in forested areas and thus contribute to climate change
Phytoplankton ecology and nutrient, biomolecule and gas cycling
My research interests are in the microscopical-sized life forms of lakes, especially in phytoplankton, and their roles in aquatic food webs. Particularly I’m interested in mixotrophy, grazing and exudate release (e.g. volatile organic compounds, BVOC’s) which are closely related to nutrient, biomolecule and gas cycling. My previous research topics have included studies on phytoplankton community composition and primary production as well as using phytoplankton as a potential source of oil for biodiesel production.
Soil type properties, forest regeneration
I try in my project (Forest soil classification for forest regeneration) to find such variables are of major importance in the planning of forest regeneration. The most interesting properties are water and oxygen concentrations in soil profile since the Site Type classification quite well describes the chemical properties (e.g. fertility) and the most promising variables are the soil type properties (e.g. the colours of the mineral soil horizons and soil type).
Passive remote sensing, modeling, vegetation dynamics, spectroscopy, photosynthesis, wildfires
Developing a model that will help to interpret passive remote sensing signals of forests. The relationship between remote sensing signals and photosynthetic efficiency is complicated and non-linear. Mechanistic models can help to explain the underlying physiological and physical causes of remote sensing observations and provide a robust platform for the use of such signals in estimating carbon fixation rates.
Gas exchange, BVOCs, tree growth, measurement methodology, technical development, boreal forests
Long term measurements of tree and forest floor gas exchange, including VOCs, using online measurement methods. Understanding the dynamics, dependency on environmental controls of gas exchange, especially VOCs.
Forest soil, carbon cycling, ectomychorrhizal fungi
My major research interest is carbon cycling in forest soil and the role of ectomycorrhizal fungi in belowground carbon dynamics. In addition, I am interested in the enzymes as well as other metabolites (VOC-compounds, bioactive compounds) produced by fungi. My earlier projects include studies on fungal bioremediation and biodiversity.
Carbon dynamics in forest soils, with special interest in disturbed (fire, wind, reindeer grazing, etc.) areas
My current projects include measuring the short and long term effects of forest fires on the stability of carbon pools in boreal forests, estimating carbon turnover on disturbed forest areas and studying the carbon neutrality of reindeer management.
Carbon cycle in northern forests
Nowadays, my main focus is in the carbon below ground i.e. in soil carbon and tree roots but I also have a special interest also in photosynthesis and in tree growth.
Gas-phase nitrogen exchange, methane emissions, wetlands
Exchange of reactive gas-phase nitrogen compounds between atmosphere and vegetation and global modelling of methane emissions from wetlands.
Terrestrial ecology, biogeochemistry of air-land interactions, ozone deposition, ozone scavenging
I have studied primarily ozone deposition to vegetation and the mechanisms behind the process and currently I am interested in the potential role of BVOCs and aerosol load in ozone scavenging. I am also involved in research on C and N cycling in high-mountain pastures in the Pyrenees, studying the role of plant diversity
Climate change, Ecosystem services, Ecosystem water-balance, Plant-water relations, Tree growth
Carbon cycling, interactions between ecosystems
Environmental research infrastructures
My research interests are in carbon cycling in different ecosystem and especially between them. After finishing a postdoc related to CO2 and CH4 emissions from lakes and small rivers in Canada, I'm back at the department of Forest Sciences. Now I'm working more to create conditions for research than with research itself. I am involved in the long-term ecosystem research infrastructures both at national (FinLTSER, INAR RI Ecosystems) and at international (eLTER) level.
Energy exchange, dissolved organic carbon, DOC production, boreal forest
I am interested in how phenology affects the processes related to energy exchange and how ecosystems differ in this respect.
In addition I model the production of DOC (Dissolved Organic Carbon) and its transport into stream water in a boreal forest. In developing the model, I use data collected from intensively researched catchments in Finland and Sweden. I am also interested in the biogeochemical processes linked to the DOC cycle and have done reserach on the role of photochemistry in the breakdown of DOC transported by big rivers.