A5034115447- Peatlands and Wetlands Ecology
- Climate change and permafrost
- Coastal wetland ecosystem dynamics
- Botany and Plant Ecology Studies
- Geology and Paleoclimatology Research
- Rangeland and Wildlife Management
- Land Use and Ecosystem Services
- Remote Sensing in Agriculture
- Indigenous Studies and Ecology
- Bryophyte Studies and Records
- Remote Sensing and Land Use
- Remote Sensing and LiDAR Applications
- Integrated Water Resources Management
- Lichen and fungal ecology
- Species Distribution and Climate Change
- Obstructive Sleep Apnea Research
- Groundwater and Isotope Geochemistry
- Cryospheric studies and observations
- Tracheal and airway disorders
- Forest Ecology and Biodiversity Studies
- Neuroscience of respiration and sleep
- Soil Carbon and Nitrogen Dynamics
- Groundwater flow and contamination studies
- Arctic and Russian Policy Studies
- Methane Hydrates and Related Phenomena
University of Eastern Finland
2013-2025
Université du Québec à Montréal
2024-2025
Finland University
2021-2024
Plant communities of mires can be linked to important ecological processes, such as carbon storage and gas fluxes. As indicators ecosystem dynamics, knowledge about their distribution condition support assessment. Mapping mire vegetation enables monitoring at ecosystem-scale, which done with UAVs (Unmanned Aerial Vehicles). Depending on the mounted sensor spectral signals recorded, various attributes plant retrieved. However, it is uncertain what extent derived, mapping detailed level...
The fine-scale spatial heterogeneity of low-growth Arctic tundra landscapes necessitates the use high-spatial-resolution remote sensing data for accurate detection vegetation patterns. While multispectral satellite and aerial imaging, including uncrewed vehicles (UAVs), are common approaches, hyperspectral UAV imaging has not been thoroughly explored in these ecosystems. Here, we assess added value relative to modelling plant communities oroarctic heaths Saariselkä, northern Finland. We...
Abstract. Water resources and associated ecosystems are becoming highly endangered due to ongoing global environmental changes. Spatial ecological modelling is a promising toolbox for understanding the past, present future distribution diversity patterns in groundwater-dependent ecosystems, such as fens, springs, streams, reed beds or wet grasslands. Still, lack of detailed water chemistry maps prevents use reasonable models be applied on continental scales. Being major determinants...
Abstract Northern aapa mire complexes are characterized by patterned fens with flarks (wet fen surfaces) and bog zone margins Sphagnum moss cover. Evidence exists of a recent increase in over that can alter ecosystem functions. Contrast between cover may enable remote sensing these changes satellite proxies. We explored hydro-morphological patterns vegetation south-boreal Finland tested the performance Landsat bands indices detecting mires. combined aerial image analysis survey, repeated...
Abstract Northern mires (fens and bogs) have significant climate feedbacks contribute to biodiversity, providing habitats specialized biota. Many studies found drying degradation of bogs in response change, while northern fens received less attention. Rich are particularly important but subject global fen ecosystems may change via direct vegetation or indirectly by hydrological changes. With repeated sampling over the past 20 years, we aim reveal trends hydrology a pristine boreal with...
Abstract We investigated recent changes in spatial patterning of fen and bog zones five boreal aapa mire complexes (mixed peatlands with patterned parts) a multiproxy study. Comparison old (1940–1970s) new aerial images revealed decrease flarks (wet hollows) fens by 33–63% middle 16–42% northern sites, as lawns Sphagnum mosses expanded over fens. Peat core transects across transformed areas were used to verify the remote sensing inference stratigraphic analyses macrofossils, hyperspectral...
Climate change-driven vegetation changes can alter the ecosystem functions of northern peatlands. Several case studies have documented fen-to-bog transition (FBT) over recent decades, which major implications, as increased bog growth would likely cause cooling feedback. However, beyond individual cases are missing to infer if a common trajectory or many alternatives FBT in progress. We explored plant community and hydrology patterns during 23 boreal aapa mire complexes Finland. focused on...
Pale terricolous lichens are a vital component of Arctic ecosystems, significantly contributing to carbon balance, energy regulation, and serving as primary food source for reindeer. Their characteristically high albedo also impacts land surface temperature (LST) dynamics across various spatial scales. However, remote sensing is challenging due their complex spectral signatures large variations in coverage biomass even within local landscape This study evaluates the influence pale on LST at...
The Arctic tundra vegetation is going through major changes as global warming alters atmospheric functions and weather patterns. These have been shown to affect for instance phenological patterns, plant community structures, herbivory patterns well carbon storage in biomass. Extensive remote sensing research with multispectral sensors has revealed significant greening trends events shrub expansion, also known shrubification, across the Arctic. hypothesized counteract increases content...
The Hudson Bay Lowlands peatland complex in Canada, the world’s second-largest complex, is experiencing impacts of climate change, potentially threatening its carbon sink capacity; however, direction and magnitude recent changes are uncertain, particularly response to ongoing permafrost thaw, isostatic rebound. In this project, we aim document vegetation (C) storage dynamics, both long- (millennial) short-term (decadal centennial), polygonal peatlands Wapusk National Park (WNP),...
The Arctic is warming four times faster than the global average1 and plant communities are responding through shifts in species abundance, composition distribution2-4. However, direction magnitude of local changes diversity have not been quantified. Using a compilation 42,234 records 490 vascular from 2,174 plots across Arctic, here we quantified temporal richness repeat surveys between 1981 2022. We also identified geographical, climatic biotic drivers behind these changes. found greater at...
Abstract Rising temperatures may endanger fragile ecosystems because their character and key species show different habitat affinities under climates. This assumption has only been tested in limited geographical scales. In fens, one of the most endangered Europe, broader pH niches have reported from cold areas are expected for colder past periods. We used largest European‐scale vegetation database fens to test hypothesis that interacts with macroclimate temperature forming realized fen moss...
The class Montio-Cardaminetea includes vegetation of springs with constant water flow.These habitats, which function as islands for highly specialized and sensitive biota, are endangered by ongoing landscape climatic changes.Although a harmonized classification into units is necessary effective habitat conservation, there currently no synthetic the Montio-Cardaminetea.Here large set vegetation-plot records was obtained from national private databases.The aim to validate EuroVegChecklist...
Restoration of forestry‐drained peatlands aims to restore near‐natural hydrology and peat‐forming vegetation. Particularly, Sphagnum mosses are important for carbon (C) sequestration through peat accumulation. We investigated the new moss layer in 18 restored circa 10 years after restoration. The sites were monitored vegetation, water level, chemistry. post‐restoration had grown on average 14.9 ± 5.2 cm thickness, measured from cores. An independent method using rooting depths small pines (...
Shrubification of arctic tundra is a well-recognized phenomenon, and it can be particularly rapid in moist habitats. Reindeer grazing inhibit shrubification, but impacts on mire vegetation have been overlooked. We studied effects plant communities Salix lapponum oroarctic mires at the border Finland Norway. compared community structure S. abundance traits between (1) grazed fens (Finland); (2) experimental exclosures (Finland), where reindeer kept out for 13 years; (3) nongrazed (Norway)....
Although generally given little attention in vegetation studies, ground-dwelling (terricolous) lichens are major contributors to overall carbon and nitrogen cycling, albedo, biodiversity biomass many high-latitude ecosystems. Changes of mat-forming pale have the potential affect vegetation, fauna, climate human activities including reindeer husbandry. Lichens a complex spectral signature terricolous limited growth height, often growing mixtures with taller vegetation. This has, so far,...
Abstract Herbivores can exert a controlling effect on the reproduction and growth of shrubs, thereby counter‐acting climate‐driven encroachment shrubs in Arctic potential consequences. This control is particularly evident case abundant herbivores, such as reindeer ( Rangifer tarandus ), whose grazing patterns are affected by management. Here, we tested how different practices border between Finland Norway impact occurrence willow Salix spp.) dominated patches, their above‐ground biomass...
The Arctic is warming four times faster than the global average, and plant communities are responding through shifts in species abundance, composition distribution. However, direction magnitude of local diversity changes have not been explored thus far at a pan-Arctic scale. Using compilation 42,234 records 490 vascular from 2,174 plots 45 study areas across Arctic, we quantified how richness changed over time during period up to decades (1981 – 2022), identified geographic, climatic biotic...
ABSTRACT Maximum seasonal thaw depth, referred to as active layer thickness (ALT), is one of the key parameters used monitor permafrost conditions. ALT maps based on interpolation point measurements or derived from coarse moderate spatial resolution satellite data often hide small‐scale variations in depth resulting differences surface characteristics and microtopography. To model predict changes hydrological biogeochemical processes areas accurately, high‐resolution remote sensing‐based...
Understanding large-scale drivers of biodiversity in palustrine wetlands is challenging due to the combined effects macroclimate and local edaphic conditions. In boreal temperate fen ecosystems, influence on modulated by hydrological settings across habitats, making it difficult assess their vulnerability climate change. Here, we investigate factors three Essential Biodiversity Variables eight ecologically defined habitats that align with ecosystem classifications red lists. We used 27,555...
Abstract. Water resources and associated ecosystems are becoming highly endangered due to ongoing global environmental changes. Spatial ecological modelling is a widely used tool for understanding the past, present future distribution diversity patterns in groundwater-dependent ecosystems, such as fens, springs, streams, reed beds or wet grasslands. Still, lack of detailed water chemistry maps prevents their reasonable use on continental scales. Being major determinants biological...
Along with the historical decline of fens due to anthropogenic impact, climate change is expected jeopardise fen biodiversity by reducing their geographic extent and altering species composition. Yet, impact on distribution in future remains unclear. We used 27,555 vegetation plots representing eight habitat types widely distributed Europe compute Ecosystem Distributional Models. For each type, we projected potential occupancy area range shift evaluated influence different scenarios...