A5070562851- Insect and Arachnid Ecology and Behavior
- Forest Ecology and Biodiversity Studies
- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Botany and Plant Ecology Studies
- Peatlands and Wetlands Ecology
- Seedling growth and survival studies
- Forest ecology and management
- Plant Water Relations and Carbon Dynamics
- Forest Management and Policy
- Soil Carbon and Nitrogen Dynamics
- Forest Insect Ecology and Management
- Plant responses to water stress
- Tree-ring climate responses
- Land Use and Ecosystem Services
- Coastal wetland ecosystem dynamics
- Fire effects on ecosystems
- Mycorrhizal Fungi and Plant Interactions
- Animal Behavior and Reproduction
- Insect and Pesticide Research
- Waste Management and Environmental Impact
- Animal and Plant Science Education
- Winter Sports Injuries and Performance
- Smart Materials for Construction
- Plant nutrient uptake and metabolism
Natural Resources Institute Finland
2013-2024
Joensuu Science Park
2000-2012
Swiss Federal Institute for Forest, Snow and Landscape Research
2009
University of Helsinki
1998
Metsähallitus (Finland)
1996
Abstract The importance of biodiversity in supporting ecosystem functioning is generally well accepted. However, most evidence comes from small‐scale studies, and scaling‐up patterns biodiversity–ecosystem (B‐EF) remains challenging, part because the environmental factors shaping B‐EF relations poorly understood. Using a forest research platform which 26 functions were measured along gradients tree species richness six regions across Europe, we investigated extent potential drivers context...
Many experiments have shown that local biodiversity loss impairs the ability of ecosystems to maintain multiple ecosystem functions at high levels (multifunctionality). In contrast, role in driving multifunctionality landscape scales remains unresolved. We used a comprehensive pan-European dataset, including 16 measured 209 forest plots across six European countries, and performed simulations investigate how plot-scale richness tree species (α-diversity) their turnover between (β-diversity)...
Abstract There is considerable evidence that biodiversity promotes multiple ecosystem functions (multifunctionality), thus ensuring the delivery of services important for human well-being. However, mechanisms underlying this relationship are poorly understood, especially in natural ecosystems. We develop a novel approach to partition effects on multifunctionality into three and apply European forest data. show throughout Europe, tree diversity positively related with when moderate levels...
The boreal forests of Fennoscandia are largely dominated by Norway spruce and Scots pine. Conifer monocultures have been favoured in forest management during the last decades. Recently, concern has risen that consisting only one tree species could be vulnerable to biotic damage. Additionally, environmental societal changes placing new demands on utilization, thus shifting focus alternative options providing a wider scale ecosystem services. It proposed mixed better than with respect...
Abstract Forest ecosystem functioning generally benefits from higher tree species richness, but variation within richness levels is typically large. This mostly due to the contrasting performances of communities with different compositions. Evidence‐based understanding composition effects on forest productivity, as well multiple other functions will enable managers focus selection that maximize functioning, rather than diversity per se. We used a dataset 30 measured in stands and six...
Summary The influence of tree species diversity and functional group on soil properties (carbon stock, pH C/N ratio) has not been explored across major European forest types. We evaluated the relative importance for carbon (C) stocks, ratio in types six regions Finland, Poland, Germany, Romania, Italy Spain. sampled soils 209 permanent plots along a gradient from monocultures to five‐species mixtures. Carbon stocks topsoil (forest floor (FF), 0–10 cm FF + cm) were positively, but weakly,...
Plant functional diversity (FD) is an important component of biodiversity that characterizes the variability traits within a community, landscape, or even large spatial scales. It can influence ecosystem processes and stability. Hence, it to understand how why FD varies between ecosystems, along resources availability gradients climate gradients, across vegetation successional stages. Usually, assessed through labor-intensive field measurements, while assessing from space may provide way...
Abstract 1. We monitored three different‐sized wood ant ( Formica aquilonia Yarrow) mounds over a 3‐year period in Finnish boreal forests dominated by Norway spruce Picea abies Karst.), to assess the seasonal temperature dependency of activity. Additionally, we also trees around for descending honeydew foragers. 2. The amount collected and prey its composition, as well carbon (C), nitrogen (N), phosphorus (P) invertebrate was investigated. 3. number warm days (average above 20 °C)...
Abstract In many terrestrial ecosystems, earthworms operate at the interface between plants and soil. As ecosystem engineers, they affect key functions such as decomposition, nutrient cycling bioturbation. Their incidence abundance depends on several soil properties, yet simultaneously also impact properties themselves. The existence of a positive feedback loop in which earthworm activity maintains their own niche—by promoting turnover rate forest floor, thereby increasing topsoil pH...
We studied effects of soil temperature on shoot and root extension growth biomass carbohydrate allocation in Scots pine (Pinus sylvestris L.) seedlings at the beginning growing season. One-year-old were grown for 9 weeks temperatures 5, 9, 13 17 °C an air °C. Date bud burst, elongation shoots roots monitored. Biomass current previous season roots, stem needles was determined 3-week intervals. Starch, sucrose, glucose, fructose, sorbitol inositol concentrations all plant parts except new...
Abstract Ants are important components of most soil invertebrate communities, and can affect the flow energy, nutrients water through many terrestrial ecosystems. The vast majority ant species build nests in mineral soil, but a small group ants temperate boreal forests Eurasia North America large parts their above‐ground using organic materials collected from surrounding soil. Many studies have shown that nesting infiltration rates, matter (OM) content, nutrient cycling, much less is known...
Abstract Mound‐building ants ( Formica spp.), as key species, have large impacts on organisms and ecosystem functions in boreal Eurasian forests. The density, sizes locations of ant mounds determine the magnitude spatial distribution activities forest ecosystems. Clear‐cutting can destroy wood colonies, abundance, dimensions may change stand structure changes with age. We compared species composition, mound numbers dimensions, Norway spruce [ Picea abies (L.) Karst.] stands different age (5,...
Red wood ants (Formica rufa group, RWAs) are common insects in boreal forests Fennoscandia, and they build large, long-lived mounds as their nests. RWA enriched with carbon nutrients, but little information is available about how affect root distribution the nutrient uptake of trees. In this study, we investigated biomass, biomass density, concentrations, amounts fine (<2 mm) coarse (>2 roots mounds, compared them those surrounding forest soil mixed coniferous stands different age classes...