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David Tenenbaum

Professor

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Mapping conservation priorities in alpine and subartctic Swedish lakes affected by rapid climate change

Author

  • Enass Said Al-Kharusi
  • David E. Tenenbaum
  • Tiit Kutser
  • Jan Karlsson
  • Ann-Kristin Bergström
  • Martin Berggren

Summary, in English

Swedish alpine and subarctic areas undergo rapid transitions due to climate change, especially in relatively humid areas where the forest vegetation is expanding. It has been suggested that lakes in these areas are in transition from clearwater into brownwater state, because of the humus layer building up in surrounding soils, with negative consequences, e.g., for the biomass production of zooplankton and fish. However, this idea remains a hypothesis to be tested at a large scale. We used the new high-resolution satellite Sentinel-2 to evaluate the relationship between lake color and forest succession in 250 widely distributed lakes across Sweden. Preliminary results show that lakes remain surprisingly clear in areas of recent forest expansion, suggesting that there is lag time before brownification occurs. Our study could be used to map regions that are sensitive to future water brownification.

Department/s

  • Dept of Physical Geography and Ecosystem Science
  • BECC: Biodiversity and Ecosystem services in a Changing Climate

Publishing year

2018

Language

English

Document type

Conference paper: abstract

Topic

  • Earth and Related Environmental Sciences

Conference name

ASLO Summer Meeting 2018

Conference date

2018-06-10 - 2018-06-15

Conference place

Victoria, Canada

Status

Published