GEO @ SASUF

Several researchers from GEO (or with ties to) have been attended the first Research & Innovation week from the South Africa-Sweden University Forum (SASUF) held in Pretoria and other parts of South Africa.

Dr. Tobias Rütting (left) presented on Soil nutrients and Climate change; Prof. Hans Linderholm (centre) chair of Theme 1 ”Climate change, natural resources and sustainability” and Dr. Staffan Rosell (right; former PhD at GEO) talked about Rural Livelihood challenges in Ethiopia.

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Field visit at Kahuzi Biega NP

we visited a the pristine montane tropical forests in the Kahuzi Biega National Park (DRC), another TropSOC sampling site. Last year two GEO students did their thesis work in this forest (Gross nitrogen turnover rates in Central African tropical montane forest soils through in situ 15N-labelling experiments). Today though we were here mainly for our cousins…

TropSOC meeting in DRC

This week the start-up meeting of TropSOC is held in Bukavu (DRC), which brings together researchers from 3 continents from different disciplines. From GEO, biogeochemist Tobias Rütting is attending.

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Excursions are conducted in the South Kivu region and today a visit at the IITA station Kalambo (including soil laboratory) and to experimental farms was made.

Tundra field work in winter

 

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To establish annual budgets for greenhouse gas fluxes is normally standard procedure, but for our Arctic ecosystems this has sometimes proven to be hard. Harsh weather conditions, inaccessible field sites and difficult terrain are obstacles scientists needs to deal with. During the project “Permafrost thaw – decadal responses to climate change” we follow three tussock tundra sites during, short time after and long time after permafrost thaw. The sites are located in the tundra areas near Abisko in the northern part of Sweden. Presently, researcher Dr. Mats P. Björkman and field assistant Hanna Axén are in the field capturing fluxes of methane and carbon dioxide at these sites. Despite temperature well below -20°C, the hard work is not the actually measurements, but the journey to reach the sites. The heavy loaded snow mobiles often get stuck on their way up the mountains, where the site at Latnjajaure is about 1000 m above sea-level, resulting in a lot of snow digging and frustration.

/Mats P. Björkman – APE@GU the tundra part of BLUES

Measuring GHG emissions from soil and trees

PhD students learning about different methodologies to measure greenhouse gas (GHG) emissions. Research Engineer Per Weslien demonstrates a laser instrument for measuring nitrous oxide;  Dr. Mari Pihlatie demonstrates that even trees emit GHGs; visiting the Micro-meteorological equipment at Mycklemossen; Prof. Janne Rinne uses the Automated SkyLine2D system to measure 13C isotope in methane.

Greenhouse gas PhD course

This week we are having the PhD course ”Greenhouse gases – biogeochemistry and measurement techniques in ecosystems and landscapes” at the SITES infrastructure Skogaryd Research Catchment, organized bu the Biogeochemistry Group.  PhD students from Sweden and abroad learn about eddy covariance, chamber techniques, stable isotopes and much more.

Computer exercise at ”Hemmet”, hands-on experience with eddy covariance data and footprint modelling.

The course is part of the ClimBEco Graduate School.

A lot of snow

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We just got back to Abisko Scientific Research station after our initial field trip of the season.

The late spring up here has resulted in a lot of snow and still frozen ground on our sites. Creative thinking, nice weather and a good field team still made the fieldwork successful.

/ Mats P. Björkman – the Alpine & Polar Ecology group of BLUES