Greenhouse emissions from Siberian rivers peak as permafrost thaws

Greenhouse emissions from Siberian rivers peak as permafrost thaws

Permafrost soils store large quantities of frozen carbon and play an important role in regulating Earth’s climate. In a study published in Nature Geoscience, researchers from Umeå University, Sweden, in collaboration with an international team, now show that river greenhouse gas emissions rise high in areas where Siberian permafrost is actively thawing.

Two Postdoctoral Fellowships in Arctic ecosystems ecology / plant-ecophysiology / microbial ecology

Lapporten Keith Larson 20140424 1200x800.jpg

Two Postdoctoral Fellowships (2 years each) in Arctic ecosystems ecology / plant-ecophysiology / microbial ecology are available in Abisko at the Climate Impacts Research Centre of the Department of Ecology and Environmental Science, Umeå University, north Sweden, to study the off-seasonal dynamics of plant and soil microbial processes in arctic ecosystems. Climate change in the Arctic is especially pronounced during autumn, winter and spring, including increases in temperature, changes in snow fall/cover and rain-on-snow events. Such off-seasonal changes in climate can affect the carbon balance of arctic ecosystems and the underlying plant and soil microbial processes but the extent remains unclear. We are looking for two postdoctoral fellows to to investigate how changes in the timing, frequency and extent of winter freezing conditions, as well as the timing of spring and autumn, affects the (off-)seasonal dynamics of plant and microbial processes in arctic ecosystems.

Deadline: 28 September 2018

[Read More]

For more information, contact Dr Ellen Dorrepaal

INTERACT Transnational Access and Remote Access call now open

Interact.png

New Transnational Access Call is Now Open
INTERACT Transnational Access and Remote Access call for s/s 2019 and a/w 2019-2020

Open at 2018-08-13 00:00:00 (Europe/Brussels) 
Close at 2018-10-12 23:59:59 (Europe/Brussels) 

The call is for INTERACT Transnational Access (TA) to 43 stations and Remote Access (RA) to 18 stations. Stations offering TA or RA are located across the Arctic and northern alpine and forest areas in Europe, Russia and North-America. The sites represent a variety of glacier, mountain, tundra, boreal forest, peatland and freshwater ecosystems, providing opportunities for researchers from natural sciences to human dimension. Note: applicants are not eligible for TA to their national infrastructures, i.e. stations that are located in the same country or operated by institutions located in the same country in which the applicant is working/residing. For example, scientists working in Finland are not eligible for TA to Finnish research stations, scientists working in UK are not eligible for TA to UK Arctic Research Station in Svalbard, scientists working in Denmark are not eligible for TA to research stations in Greenland, operated by Danish institutions, etc.

Good news for fishermen: “Browning” impacts fish less than expected

Water color is getting darker in lakes across the planet. This phenomenon, known as “browning,” was anticipated to cause widespread declines in fish populations. A new study by researchers from Umeå University finds that the number of fish populations impacted by browning is smaller than previously believed.

[Read More]

Original article:
David Seekell, Pär Byström, and Jan Karlsson, Lake morphometry moderates the relationship between water color and fish biomass in small boreal lakes. Limnology and Oceanography. 2018. doi: 10.1002/lno.10931

For more information, please contact:

David Seekell, Assistant professor, Department of Ecology and Environmental Science, Umeå University, Sweden

Limnology and Oceanography Research Exchange (LOREX)

Lapporten Gerard Rocher 150630 950x400.jpg

Limnology and Oceanography Research Exchange (LOREX) is an NSF funded initiative to provide training in international research for graduate students. Graduate student research is often constrained by the resources, ideas, and culture of the home institution. International collaborations enhance graduate students’ ability to think critically and creatively, make cross-disciplinary connections, and stretch one's field of view while gaining competency in an international environment and increasing their network of colleagues.

Opportunities for research exchanges in freshwater ecology, aquatic biogeochemistry and paleolimnology are possible with CIRC at Umeå University.

[Read More]

Science communication internships in Abisko

ANS Aurora Lars Lehnert 20170209.jpg

Are you interested in learning and applying your science communications skill in the context of exciting ecological and environmental scientific research? The Climate Impacts Research Centre is offering internships based at the Abisko Scientific Research Station, 200 km north of the Arctic Circle. Our research focuses on terrestrial and aquatic ecosystems and their interface at the edge of the Arctic.

Interns work with researchers, students, and the public to communicate our fascinating and import climate research globally. If you are fluent in dynamic website and social media tools, capable with a digital camera, video and audio recording, we would like to see you in Abisko!

We are looking for one or two interns for September to November 2018.

[Read More]

Fingerprints of change: Abisko plants and phenology citizen science

Abisko Plant and Phenology iNaturalist poster 20180711.jpg

Abisko plants and phenology (fjällkalendern) aims at collecting species distributions and phenology data for the Abisko region (focused in and around Abisko National Park). This project is part of our larger efforts to identify the fingerprints of environmental change in Abisko. We have over 100 years of plant distribution and phenology data, plus weather data (1913 to present), from researchers at the Abisko Scientific Research Station. This provides a unique time machine to allow us to quantify the change to the plant communities of this region perched on the edge of the Arctic.

Visit our project page here.

Visit our citizen science page here.

New Paper: Lake morphometry moderates the relationship between water color and fish biomass in small boreal lakes

Globally, lake waters are thought to be getting darker due to increasing concentrations of dissolved organic carbon - an amalgam of thousands of uncharacterized carbon compounds that get flushed into lakes from surrounding areas. It's been predicted that this change in water color will lead to declining fish populations, but prior studies haven't considered how variations in lake depth might affect this relationship.

Seekell, D. A., P. A. Byströn, & J. Karlsson 2018. Lake morphometry moderates the relationship between water color and fish biomass in small boreal lakes. Limnology and Oceanography. Early Online. DOI: 10.1002/lno.10931

pub46_img1 1200 x 764.jpg

CIRC researchers in new Bigert and Bergström film

CIRC researchers in new Bigert and Bergström film

The artist duo Bigert and Bergströms new film "The Climate Experiment" (2018) presents the lurking awareness of our own role in the change of climate. 10 minutes in, the duo visits Climate Impact Research Centre and talks with CIRC researchers, Keith Larson and Ellen Dorrepaal. The film is available at SvtPlay and has also been been highlighted by The Faculty of Science and Technology at Umeå University. 

SITES News: Meet researcher Blaize Denfeld who studies CO2 and CH4 dynamics in lakes

Blaize Denfeld Lake Fieldwork 2 800x1200.jpg

Blaize, you started your PhD at Uppsala University working at Erken around the time SITES was formed, when you heard about SITES your PhD research expanded to three SITES stations, and you are now finalizing your Postdoc working with SITES Water at Svartberget.

[Read More]

Klimatexperimentet film released (in Swedish)

Climate Impacts Research Centre scientists Ellen Dorrepaal and Keith Larson feature in a new film project about climate by Swedish artists Bigert & Bergström. The following description is in Swedish...

aasdasd.jpg

En film av och med konstnärsduon Bigert & Bergström. En konstnärsfilm om de brännande aktuella klimatförändringarna, mot en bakgrund av duons konstinstallationer där väder och vind på ett tidigt stadium fick ersätta färg och lera. Klimatexperimentet utspelas under det intensiva året 2017 där vi får följa Bigert & Bergströms olika projekt och aktiviteter i tolv månadskapitel. Forskningsresor, stora utställningsprojekt och invigningar av offentliga konstverk korsklipps med intervjuer där B&B möter journalister, miljöhistoriker och klimatforskare.

Watch on SVTPlay.se