Microbial CH4 turnover in boreal forests and peatlands
Vegetation optical cues, Urban greenspace biodiversity, Urban greenspace carbon sink–source interactions, Environmental research infrastructures
My research interests are related to vegetation optical cues and their relationship with photosynthetic dynamics. I also conduct research on vegetation biodiversity as well as greenhouse gas and carbon sink-source interactions in the urban greenspace. Additionally, I am involved in the integration of research infrastructure services for climate change risks (https://www.iriscc.eu/).
Remote sensing, photosynthesis, terrestrial vegetation, climate change
I am interested in investigating terrestrial vegetation photosynthesis using remote sensing optical signals to understand how plants respond to environmental stresses and 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.
My research focuses on the general areas of forest ecosystem ecology and the impacts of climate change on forests. My area of expertize is process-based modelling of forest ecosystems. I'm currently focusing on the implementation of modern computational methods for the calibration and comparison of process-based models rich in parameters. I'm striving to apply Bayesian statistics to process based models, as a method for uncertainty analysis and model comparison. In the last years I also focused my research on the topic of water stress and water stress induced tree mortality.
Whole tree ecology, GHG chamber measurements, the intersection between Arts and Science
My research interest is in the interactions between forest plants, forest soil and the atmosphere. As a special topic, I am working on developing chamber measurement techniques. My work also consists of working on science communications and the intersection between the Arts and Science.
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.
Urban tree physiology
Tree functioning and ecosystem services in the urban mosaic of growth environments.
Tree and soil carbon dynamics in boreal forests
My research interests are tree and soil carbon dynamics in boreal forest ecosystems. At the moment I work at SMEAR II in Hyytiälä for maintaining and developing the tree and soil measurements, and other tasks related to, for example, eLTER and ICOS.
Vegetation and nutrient cycling in subarctic forests
In my doctoral thesis, I study how forests vegetation in the northern latitudes responds to climate change. I approach the topic by analyzing the relationships that the forest vegetation has with a) soil nutrients, and b) atmosphere.
Effect of freezing and thawing on tree ecophysiology
Carbon cycle in northern ecosystems
My passion is to understand biological, biochemical and physical interactions in nature. My long-term focus has been in the uptake and release of greenhouse gases, mainly carbon dioxide, and the overall carbon cycle. Most of my studies has concerned forested ecosystems but nowadays, I study urban and agricultural ecosystems as well.
I am an isotope biogeochemist with a background in soil and environmental chemistry. My current work focuses on understanding and distinguishing between the processes that lead to plant methane emissions. I also make, listen, and dance to music and try to spend as much time in nature as possible.
I am a physicist with a long standing experience in remote sensing at different scales, from proximal to space-based, exploiting the capabilities of hyperspectral data.
I have designed various instruments for measuring optical properties both in the laboratory and in the field. Mostly oriented towards vegetation monitoring in general, and in particular the remote sensing of chlorophyll fluorescence at leaf and canopy level.
My research has been mainly performed under the preparation of several ESA Earth Observation missions, but mostly focused on FLEX (the Fluorescence Explorer).
Nowadays, I am applying my experience to enhance the measuring capabilities of the Optics of Photosynthesis Laboratory (OPL) indoors (laboratory and greenhouse) and outdoors.
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.
Methane exchange processes, peatlands, soil gas exchange
Tree water relations, ecohydrology
My research interest is in tree water relations especially related to the stem water content changes, growth and xylem sap flow measurements. I am also interested in the development of environmental sensors and measurement techniques.
ORCID: 0000-0003-0994-5353
More information in research database TUHAT
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
Data management, greenhouse gas fluxes
Tree functioning, water and carbon exchange exchange between individual trees and the entire ecosystem
My research focus is especially on recognizing the response of trees to stressful conditions (prolonging lack or excess of water). Currently, I am working with the role of bark in tree stress responses, the functioning of trees in wetland ecosystems, and the ability of Scots pine and Silver birch to transport oxygen through the stem during periods of oxygen deficiency for roots. In my work, I combine various scientific methods and instruments that provide insight into a wide range of plant functioning. My expertise particularly concerns the measurement of sap flow, stem efflux, stem water potential and the processing and analysis of data from the Eddy covariance system regarding the exchange of main trace gases with the atmosphere.
Tree growth, carbon balance, carbon sink – source interactions
I study tree growth and different aspects of tree and forest carbon balance. My main interest is in growth modelling and I have also worked with photosynthesis modelling and carbon isotopes. I work at Hyytiälä forestry field station and am responsible of biodiversity measurements there.
Project coordinator / Postdoctoral researcher
As a research coordinator, I am involved in two projects. In CREDIBLE project (EU-funded initiative aimed at building consensus on the methodologies that could maximize the capacity of soils to act as carbon sinks), I act as a co-leader of a Focus Group working on proximal sensing, digitalization, technology acceptance and transformative resistance in carbon farming. In eLTER (Integrated European Long-Term Ecosystem, critical zone and socio-ecological Research), I coordinate Site and Platforms Forum (my role is to facilitate networking and communication among research sites’ representatives) and I am a practical lead in organizing the eLTER Science Conference. My main interest as a researcher at Optics of Photosynthesis Lab include leaf optical properties, especially chlorophyll-a fluorescence and its variation among species, leaf types and light environments.
Forest productivity and growth modelling, model calibration
My research focuses on forest productivity and growth modelling using process-based models. I am working on model-data fusion techniques to estimate uncertainties in model parameters and predictions.
Carbon cycles of forest and peatland ecosystems
My research interests lie in the flow of material through the various parts of forest and peatland ecosystems. I specialize in gas flux measurements from ecosystem surfaces, such as soil and different compartments of trees, and wish to gain better understanding of the processes involved in the cycling of carbon and nitrogen between the soil, vegetation and the atmosphere. I am currently studying the link between the physical properties and degradation of peat of drained peatland forests, and have also recently taken a peek into tropical wetland research as well.
Acclimation and regulation of photosynthesis, boreal conifers, thylakoid, photosystem, light harvesting, molecular plant physiology
I am interested in understanding the photosynthetic acclimation and regulation processes of boreal conifers. My research focuses on the development of new methods and protocols bridging the gap between the thylakoid- to the leaf-level.
Climate change, Ecosystem services, Ecosystem water-balance, Plant-water relations, and Operations of Research Infrastructures
I am currently working for two environmental Research Infrastructures (RI). At eLTER RI (University of Helsinki, Finland), I am working as ‘Research Coordinator’, while at ICOS ERIC Head Office in Helsinki; I am holding ‘Operations & Networking Officer’ position. From January 2021 onwards, I will entirely focus on eLTER RI with its Preparatory Phase Project activities of preparing Cost Book, Cost Benefit Analysis and Socio-Economic Impact Analysis.
During recent post-doc work, with the auspices of University of Helsinki and Chinese Academy of Sciences (CAS) prestigious President’s International Fellowship Initiative (PIFI), I spent couple of years at CAS’ South China Botanical Garden and focused on tree growth and plant-water relations of boreal and sub-tropical ecosystems. My MSc and PhD theses were related to carbon stocks, greenhouse gas emission and water balance of dryland ecosystem.
Tree ecophysiology and biotic stress
I'm currently working in post doc research on conifer physiological responses to bark beetle and blue stain fungi invasions. My past and current focus is in tree water and carbon relations, including studies on tree gas exchange, water use and phloem translocation in the field and greenhouse conditions.
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 (LTER Finland, INAR RI Ecosystems) and at international (eLTER) level.
Water and carbon relations in tree, tree ecophysiology and ecology
My research focus on water and carbon fluxes in trees and between trees and the atmosphere, what are the processes regulating those fluxes, how they are influenced by the environment and how this response affect the trees. In particular, I am interested in the effect of drought. Beyond the individual level, I study how tree ecophysiology and fluxes: 1) impact biogeochemical cycles in forest ecosystems, and 2) how they respond to and shape tree ecology.