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Work Package 7
Interaction between vegetation and climate

Climate studies have only recently started to deal with the effect of vegetation canopy to regional and larger scale changes of Earth surface characteristics relevant to climate processes. Especially, the behavior of surface albedo is critical to climate system. Duration and characteristics of snow cover have the largest effect to the annual variability of the albedo, i.e. the total reflectivity of incoming sun irradiance, and snow processes, including the timing of snow melt are influenced by vegetation canopy. Vegetation above and within snowpack reduce surface albedo, as compared to snow covered open ground.

Yet, information required for the quantification of these effects for different ecosystems, as well as detailed information how the albedo has changed in vegetated land areas is lacking. Remote sensing data sets provided by FMI will be used to investigate the changes in snow cover, and to relate this information with ecological characteristics. The available data set retrieved from satellite data by FMI include hemi-spherical information on snow melt, snow mass (SWE, snow depth). These data sets are applied together with optical satellite data derived albedo products in order to map the behavior of surface albedo in the study area.

Prof. Jouni Pulliainen, Finnish Meteor. Inst. (jouni.pulliainen[at]fmi.fi)
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    ​​Keskitalo, E.C.H, Horstkotte, T., Kivinen, S., Forbes, B., and Käyhkö, J. (2015). "Generality of mis-fit"? The real-life difficulty of matching scales in an interconnected world. Accepted for publication in Ambio.

    Saccone P. and Virtanen R. (2015). Extrapolating multi-decadal plant community changes based on medium-term experiments can be risky: evidence from high-latitude tundra. Oikos. DOI: 10.1111/oik.02399.

    Stark, S. and Ylänne H. (2015). Grazing in Arctic peatlands – an unknown agent in the global carbon budget. Environmental Research Letters, 10: 051002. DOI: 10.1088/1748-9326/10/5/051002.

    Ylänne, H., Stark, S., and Tolvanen, A. (2015). Vegetation shift from deciduous to evergreen dwarf shrubs in response to selective herbivory offsets carbon losses: evidence from 19 years of warming and simulated herbivory in the sub-arctic tundra. Global Change Biology,  21: 3696–3711.

    Ruffino, L., Oksanen, T., Hoset, K.S., Tuomi, M., Oksanen, L., Korpimäki, E., Bugli, A., Hobson, K.A., Johansen, B., and Mäkynen A. (2015). Predator-rodent-plant interactions along a coast-inland gradient in Fennoscandian tundra. Ecography. DOI: 10.1111/ecog.01758.

    Björkman, C. and Niemelä, P., eds. (2015). Climate Change and Insect Pests. CABI Climate Change Series 7. 279 pp.

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