A5053375947- Plant responses to elevated CO2
- Atmospheric chemistry and aerosols
- Forest Insect Ecology and Management
- Plant Water Relations and Carbon Dynamics
- Plant Stress Responses and Tolerance
- Plant and animal studies
- Fire effects on ecosystems
- Climate change and permafrost
- Plant Parasitism and Resistance
- Mycorrhizal Fungi and Plant Interactions
- Atmospheric and Environmental Gas Dynamics
- Lichen and fungal ecology
- Forest Ecology and Biodiversity Studies
- Air Quality and Health Impacts
- Light effects on plants
- Insect and Pesticide Research
- Cryospheric studies and observations
- Plant Pathogens and Fungal Diseases
- Atmospheric aerosols and clouds
- Ecology and Vegetation Dynamics Studies
- Geology and Paleoclimatology Research
- Species Distribution and Climate Change
- Seedling growth and survival studies
- Tree-ring climate responses
- Plant pathogens and resistance mechanisms
Natural Resources Institute Finland
2022-2025
University of Eastern Finland
2015-2024
Finnish Environment Institute
2000
Living trees are the main source of biogenic volatile organic compounds (BVOCs) in forest ecosystems, but substantial emissions originate from leaf and wood litter, rhizosphere microorganisms. This review focuses on temperate boreal ecosystems roles BVOCs ecosystem function, to canopy soil atmosphere level. Moreover, emphasis is given question how will help forests adapt environmental stress, particularly biotic stress related climate change. Trees use their vascular system internal...
Northern forest trees are challenged to adapt changing climate, including global warming and increasing tropospheric ozone (O3) concentrations. Both elevated O3 temperature can cause significant changes in volatile organic compound (VOC) emissions as well leaf anatomy that be related adaptation or increased stress tolerance, signs of damage. Impacts moderately (1.3× ambient) (ambient + 1 °C), alone combination, on VOC structure two genotypes (2.2 5.2) European aspen (Populus tremula L.) were...
Abstract Secondary organic aerosol (SOA) impact climate by scattering and absorbing radiation contributing to cloud formation. SOA models are based on studies of simplified chemical systems that do not account for the complexity in atmosphere. This study investigated formation from a mixture real Scots pine ( Pinus sylvestris ) emissions including variety monoterpenes sesquiterpenes. generation was characterized different combinations volatile compounds as plant were altered with an...
Abstract Emissions of biogenic volatile organic compounds ( BVOC s) have been earlier shown to be highly temperature sensitive in subarctic ecosystems. As these ecosystems experience rapidly advancing pronounced climate warming, we aimed investigate how warming affects the emissions long term (up 13 treatment years). We also assess whether increased litterfall resulting from vegetation changes would affect emissions. The study was conducted a field experiment with factorial open‐top chamber...
Abstract. Boreal forests are a major source of climate-relevant biogenic secondary organic aerosols (SOAs) and will be greatly influenced by increasing temperature. Global warming is predicted to not only increase emissions reactive volatile compounds (BVOCs) from vegetation directly but also induce large-scale insect outbreaks, which significantly BVOCs. Thus, climate change factors could substantially accelerate the formation SOAs in troposphere. In this study, we have combined results...
One barrier to predicting biogenic secondary organic aerosol (SOA) formation in a changing climate can be attributed the complex nature of plant volatile emissions. Plant emissions are dynamic over space and time, change response environmental stressors. This study investigated SOA production from healthy aphid-stressed Scots pine saplings via dark ozonolysis photooxidation chemistry. Laboratory experiments using batch reaction chamber were used investigate different mixtures. The mixture...
Plants emit an extremely diverse bouquet of volatile organic compounds (VOCs) from their above-ground and below-ground parts. Emissions are constitutive or induced, e.g. by herbivores. VOCs can be classified as highly volatile, semi-volatile compounds. Sesquiterpenes (SQTs) typical (sVOCs) released plants. Similarly, herbivore-induced homoterpenes methyl salicylate also have relatively low volatility. SVOCs a high boiling point (> 240 °C) vapour pressure below 0.005 kPa at 25 °C. Glandular...
Root and butt rot of conifer trees caused by fungi belonging to the Heterobasidion annosum species complex is one most economically important fungal diseases in commercial plantations throughout Northern hemisphere. We investigated interactions between their host conducting dual RNA-seq chemical analysis on Norway spruce naturally infected spp. analyzed pathogen transcriptome phenolic terpenoid contents trees. Presented results emphasize role phenylpropanoid flavonoid pathways defense...
Northern forests are currently experiencing increasing mean temperatures, especially during autumn and spring. Consequently, alterations in carbon sequestration, leaf biochemical quality freezing tolerance (FT) likely to occur. The interactive effects of elevated temperature ozone (O3), the most harmful phytotoxic air pollutant, on Norway spruce (Picea abies (L.) Karst.) seedlings were studied by analysing phenology, metabolite concentrations needles, FT gas exchange. Sampling was performed...
Biogenic volatile organic compound (BVOC) emissions are expected to change substantially because of the rapid advancement climate in Arctic. BVOC emission changes can feed back both positively and negatively on warming. We investigated effects elevated temperature shading from arctic plant species Empetrum hermaphroditum, Cassiope tetragona, Betula nana Salix arctica. Measurements were performed situ long-term field experiments subarctic high Arctic using a dynamic enclosure system...
Climate warming is expected to increase the frequency of insect outbreaks in Boreal conifer forests. We evaluated how needle removal by larvae two diprionid sawfly species affects composition and quantity VOC emissions from Pinus sylvestris L. saplings. Feeding damage significantly increased rate localized damaged branch. The total monoterpenes (MTs) were dominating (96-98% VOCs) by14-fold Neodiprion sertifer-damaged branches 16-fold Diprion pini-damaged compared intact branches. Emissions...
Abstract The forest floor acts as a source of terpenoid emissions to the atmosphere. These can further impact atmospheric particle formation and radiation balance. Climate change escalates wildfire frequency in boreal forests. Wildfires are major disturbances with long‐term ecosystem impacts, particularly on floor, significantly influencing sources emissions. This study quantified post‐fire from characterized micro‐environmental conditions, including abiotic (e.g., air temperature, soil...