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  • GHG fluxes in winter

  • Vegetation inventory

  • Reindeer exclusion

  • Spring field work

Alpine and Polar Ecology at the University of Gothenburg (APE@GU)

 

Polar and Alpine regions are currently undergoing rapid changes due to climate change. Changes in vegetation patterns (such as expansion of shrubs and compositional shifts) and altered microbial communities are leading to changes carbon and nutrient dynamics in these ecosystems.

One of the most striking change is occurring in the thawing of permafrost soils, which together with changes in ecosystem properties poses a stress for the people living in these areas and affecting their culture and livelihood (i.e. reindeer husbandry).

Research

APE@GU’s research seeks to provide new knowledge on ecosystem functions in the Alpine and Polar context, using long-term experiments together with mechanistic laboratory experiments. We focus on climate induced changes that spans from plant community dynamics to greenhouse gas fluxes.

Searching for samplesOur research topics includes: herbivory-plant-soil interactions, plant and soil microbial community dynamics, permafrost thaw, ecosystem C and N dynamics, and soil-snow-atmosphere interactions.

About APE@GU

APE@GU also acts as the scientific coordinators of Latnjajaure Field Station outside Abisko where the University of Gothenburg has conducted research since 1990 as part of the International Tundra EXperiment (ITEX).

Our projects are mainly funded from FROMAS, VR, EU and BECC with large opportunities for MSc and BSc student projects (see Student Project page).

Groupmembers

Robert G. Björk, Mats P. Björkman & Ruud Scharn

An introduction to the Arctic Tundra Biome and the PERMTHAW project

  • Ongoing major projects

    Impact of Climate Warming on Arctic Biodiversity

    The overall objective of this project is to provide novel insights into plant community organization, with the ultimate goal to vastly increase our understanding of climate warming effects on Arctic vegetation change. Using a multi-disciplinary approach that combines molecular phylogenetics, bioinformatics, and ecology, we will utilize a unique long-term circumpolar dataset and experimental set-up to investigate climate warming as a driver of community phylogeny across spatial and temporal scales.

     

    Finansieras av: FORMAS

    Projektansvarig: Robert G. Björk

    Disentangling the role of mycorrhiza for ecosystem processes

    Biodiversity and the role of mycorrhiza is undoubtedly of major significance for ecosystem processes such as carbon (C) sequestration and soil nitrogen (N) and organic matter dynamics. Despite their importance, it is poorly understood how and to what extent certain features of biodiversity are linked to ecosystem processes. This project aims to improve our understanding of the coupling between plants and microbial diversity and to what extent changes in plant-soil biodiversity affect carbon (C) and nitrogen (N) dynamics in the ecosystem.

     

    Finanisieras av: VR

    Projektansvarig: Robert G. Björk

    Permafrost thaw - decadal responses to climate change (PERMTHAW)

    This project uses a natural occurring permafrost gradient to gain insights in the decadal response to climate change, following thaw and establishment of new non-permafrost ecosystems. Investigating vegetation changes, microbial changes as well as the ecosystems changes in carbon and nitrogen cycling both in the field and in laboratory conditions.

     

    Finasieras av: EU

    Projektansvarig: Mats P. Björkman

    Thawing permafrost soils - long-term impacts on ecosystems C and N dynamics

    In the context of the ongoing climate change, temperatures in the Arctic are rising faster than elsewhere in the world, leading to a thawing of permafrost in the north. When the permafrost thaws, the door opens to a freezer full of resources for the soil's microorganisms. The big questions to be answered are now: "How accessible is the new food?", "What do the microorganisms actually choose/are able to eat?", and "Will they eat faster in the even warmer climate of the future?"

     

    Finansieras av: FORMAS

    Projektansvarig: Mats P. Björkman

    The sensitivity of carbon in Arctic permafrost soils to climate change (SCArPS)

    Arctic permafrost soils contain huge amounts of stored carbon (C), which upon thawing releases ancient organic matter that has been stored in the frozen soil for centuries. However, the critical role that Arctic C stocks may come to play in the future of our climate system has not been adequately investigated. Particularly, there is a gap in our current knowledge as to which extent permafrost-protected C is available for microbial metabolism once the soils thaw. Therefore, will this project explore and evaluate the potential release of stored soil organic carbon (SOC) in Arctic permafrost soils, with respect to climate change.

    Finansieras av: FORMAS

    Projektansvarig: Robert G. Björk

  • Past projects

    Ecosystem responses to herbivory and climate change along the Swedish mountains

    The overall objective of this project is to gain an increased understanding of plant-herbivore interactions in mountain ecosystems. We want to explore and evaluate the effect of exclusion of large herbivores for ecosystem functions and services, also with respect to climate change.

     

    Finansierades av: FORMAS

    Projektansvarig: Robert G. Björk

Page Manager: Henrik Thelin|Last update: 6/20/2018
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