A5014631945- Climate change and permafrost
- Peatlands and Wetlands Ecology
- Polar Research and Ecology
- Soil Carbon and Nitrogen Dynamics
- Cryospheric studies and observations
- Fire effects on ecosystems
- Geology and Paleoclimatology Research
- Ecology and Vegetation Dynamics Studies
- Invertebrate Taxonomy and Ecology
- Rangeland and Wildlife Management
- Aquatic Invertebrate Ecology and Behavior
- Collembola Taxonomy and Ecology Studies
- Species Distribution and Climate Change
- Forest Ecology and Biodiversity Studies
- Microbial Community Ecology and Physiology
- Indigenous Studies and Ecology
- Forest ecology and management
- Botany and Plant Ecology Studies
- Mycorrhizal Fungi and Plant Interactions
- Marine and environmental studies
- Tree-ring climate responses
- Bryophyte Studies and Records
- Physiological and biochemical adaptations
- Seedling growth and survival studies
- Composting and Vermicomposting Techniques
Swedish University of Agricultural Sciences
2017-2025
Abisko Scientific Research Station
2017-2025
Umeå University
2014-2025
Swedish Institute
2025
Swedish Species Information Centre
2025
Vrije Universiteit Amsterdam
2010-2017
Amsterdam UMC Location Vrije Universiteit Amsterdam
2008
Soil life supports the functioning and biodiversity of terrestrial ecosystems. Springtails (Collembola) are among most abundant soil arthropods regulating fertility flow energy through above- belowground food webs. However, global distribution springtail diversity density, how these relate to fluxes remains unknown. Here, using a dataset representing 2470 sites, we estimate total biomass at 27.5 megatons carbon, which is threefold higher than wild vertebrates, record peak densities up 2...
Abstract Trees interact with a multitude of microbes through their roots and root symbionts such as mycorrhizal fungi endophytes. Here, we explore the role fungal predictors soil root-associated microbiomes widespread broad-leaved trees across European latitudinal gradient. Our results suggest that, alongside factors climate, soil, vegetation properties, colonization by ectomycorrhizal, arbuscular mycorrhizal, dark septate endophytic also shapes tree-associated microbiomes. Notably,...
Summary 1. Although direct contributions of soil invertebrates to carbon turnover are modest, they have a disproportionally large indirect impact through their control over the activity microbial decomposers. Shifts in invertebrate species distribution might substantial effect on decomposition process because functional role depends species’ vertical position soils. Gradients microclimate and substrate quality structure largely determine invertebrates. Because possible climate change...
Abstract Arctic plant growth is predominantly nitrogen (N) limited. This limitation generally attributed to slow soil microbial processes due low temperatures. Here, we show that arctic plant-soil N cycling also substantially constrained by the lack of larger detritivores (earthworms) able mineralize and physically translocate litter organic matter. These new functions provided earthworms increased shrub grass concentration in our common garden experiment. Earthworm activity either height or...
Global climate warming disproportionately affects high-latitude and mountainous terrestrial ecosystems. Warming is accompanied by permafrost thaw, shorter winters, earlier snowmelt, more intense soil freeze-thaw cycles, drier summers, longer fire seasons. These environmental changes in turn impact surface water groundwater flow regimes, quality, greenhouse gas emissions, stability, vegetation cover, (micro)biological communities. also facilitates agricultural expansion, urban growth, natural...
Plants that can take up amino acids directly from the soil solution may have a competitive advantage in ecosystems where inorganic nitrogen sources are scarce. We hypothesized diverse mosses cold, N-stressed share this ability. experimentally tested 11 sub-arctic Swedish moss species of wide-ranging taxa and growth form for their ability to double labelled (15N 13C) glycine aspartic acid laboratory setup as well realistic field setting. All were able injected into some extent, although...
Abstract Climate change‐driven increases in winter temperatures positively affect conditions for shrub growth arctic tundra by decreasing plant frost damage and stimulation of nutrient availability. However, the extent to which shrubs may benefit from these be strongly dependent on following spring climate. Species‐specific differences phenology sensitivity likely responses warming. Additionally, effects changes climate differ over small spatial scales, as natural variation snow cover,...
Plant nutrient acquisition strategies involving ectomycorrhizal (EcM) and arbuscular mycorrhizal (AM) associations, are key plant functional traits leading to distinct carbon (C) dynamics in forests. Yet, little is known about how these influence the structure functioning of soil communities, if such effects may be more or less pronounced depending on type forest various abiotic factors. Here we explore potential interactions occurring between plant-EcM plant-AM systems with diverse...
Abstract. Arctic soils play an important role in Earth's climate system, as they store large amounts of carbon that, if released, could strongly increase greenhouse gas levels our atmosphere. Most research to date has focused on how the turnover organic matter these is regulated by abiotic factors, and few studies have considered potential biotic regulation. However, arctic are currently missing groups soil organisms, here, we highlight recent empirical evidence that organisms' presence or...
Springtails (Collembola) inhabit soils from the Arctic to Antarctic and comprise an estimated ~32% of all terrestrial arthropods on Earth. Here, we present a global, spatially-explicit database springtail communities that includes 249,912 occurrences 44,999 samples 2,990 sites. These data are mainly raw sample-level records at species level collected predominantly private archives authors were quality-controlled taxonomically-standardised. Despite covering continents, most come European...
The fate of the soil organic matter stored in arctic ecosystems a future warmer climate is highly debated but remains quite uncertain, especially as most studies do not take into account combined effect change and simultaneous invasion by non-native fauna. For example, while impact on carbon losses from might be limited due to strong nutrient limitations restricting microbial activity decomposition speed these ecosystems, current burrowing earthworms result human alleviate modify food web,...
Permafrost soils are devoid of fauna while frozen, but little is known about how affects their biogeochemistry upon thawing. Most soil resides in the uppermost layers soil, and therefore unlikely to colonize deep, often anoxic, at bottom active layer where newly-thawed permafrost found. However, abrupt thaw events can result being exposed surface, such both common throughout circum-Arctic an important uncertainty biogeochemistry. While exact faunal dispersal mechanisms remain unexplored,...
Past glaciations eradicated burrowing earthworms from northern Scandinavia, and their slow natural dispersal rates have left higher latitude landscapes still mostly earthworm-free. Burrowing that are common in southern Scandinavia may expand presence ecosystems, as is suggested by occasional observations of Sweden. Given the dramatic impacts earthworm colonisation can on forests, it important to assess likeliness expansion Scandinavian forested ecosystems. To do this, we need increase our...
Summary 1. Studies of stable isotope signatures can reveal and quantify trophic carbon transfer between organisms. However, preservation the samples before analysis cannot always be avoided. Some agents are known to alter tissue δ 13 C values considerably, but we do not yet understand how variation in such artefacts may determined by body traits different invertebrate species life stage. 2. Here, tested effect four methods on two morphologically ecologically distinct springtails, Folsomia...
Abstract Climate warming enables tree seedling establishment beyond the current alpine treeline, but to achieve this, seedlings have establish within existing tundra vegetation. In tundra, mosses are a prominent feature, known regulate soil temperature and moisture through their physical structure associated water retention capacity. Moss presence species identity might therefore modify impact of increases in precipitation on at arctic‐alpine treeline. We followed Betula pubescens Pinus...
At high latitudes, winter warming facilitates vegetation expansion into barren frost-affected soils. The interplay of changes in climate and plant presence may alter soil functioning via effects on decomposers. Responses decomposer fauna microorganisms to such likely differ from each other, since their life histories, dispersal mechanisms microhabitats vary greatly. We investigated the relative impacts short-term increases cover bacteria collembola community composition cryoturbated,...
Abstract. Contrary to most soils, permafrost soils have the atypical feature of being almost entirely deprived soil fauna. Abiotic constraints on fate carbon after thawing are increasingly understood, but biotic remain scarcely investigated. Incubation studies, essential estimate effects thaw cycling, typically measure consequences in isolation from topsoil and thus do not account for altered interactions because e.g. colonization by Microarthropods facilitate dispersal microorganisms soil,...
Abstract The supply of recent photosynthate from plants to soils is thought be a critical mechanism regulating the activity and diversity soil biota. In Arctic, large‐scale vegetation transitions are underway in response warming, there an urgent need understand how these changes affect biodiversity function. We investigated abundance fungi invertebrates responded reduction fresh below‐ground treeline birch willow, achieved using stem girdling. hypothesised that forest would support greater...