In the TEAQUILA project we will focus on improving the state of aquatic ecosystems by controlling the load of terminal electron acceptors (TEAs), besides decreasing nutrient loading. The analysis of coupled biogeochemical cycles addresses the scientific basis for some of today's major environmental problems, such as eutrophication, greenhouse gas fluxes and harmful substances. Besides the source and magnitude of C, N and P loading, we will focus on Mn, Fe and S loading from headwater catchments downstream to the Baltic Sea. By coupling of major element cycles to less studied, yet equally important trace element cycles, our project will produce urgently needed information on how to manage freshwater ecosystems in changing climate and under variable land use patterns (forest, peatland, agricultural land, urban area) by simultaneously maintaining best possible ecosystem services. The eutrophication of aquatic systems is commonly linked to external loading and generally manipulated by decreasing nutrient loading. More variable weather patterns in future climate, however, significantly affect seasonal runoff patterns, simultaneously regulating redox conditions in the catchment and thus the flux of TEAs. Our project will also produce information on the effects of mining industry and peat harvesting on the state of surface waters and enables a more comprehensive evaluation of the efficiency of water protection measures used in agriculture. Further, we will investigate cost-effective strategies to abate nutrients and TEAs based on the experience gathered during the project.
TEAQUILA publications and presentations
Publications
Mattsson, T., Lehtoranta, J., Ekholm, P. Palviainen, M. & Kortelainen, P. 2017. Climate induced runoff changes have a land cover specific effect on the seasonal fluxes of terminal electron acceptors in the boreal streams. The Science of the Total Environment 601-602:946-958. http://dx.doi.org/10.1016/j.scitotenv.2017.05.237
Iho, A., Ahlvik, L., Ekholm, P., Lehtoranta, J. & Kortelainen, P. 2017. Optimal Phosphorus Abatement Redefined: Insights from Coupled Element Cycles. Ecological Economics 137:13-19.
de Wit et al. 2016. Current browning of surface waters will be further promoted by wetter climate. Environmental Science & Technology Letters 3:430–435. DOI: 10.1021/acs.estlett.6b00396
Räike et al. 2016. Long term trends (1975-2014) in the export of carbon from Finnish rivers to the Baltic Sea. Organic and inorganic components compared. Aquatic Sciences 78:505–523. DOI 10.1007/s00027-015-0451-2.
Ahlvik, L. 2016. Essays on Long-Term Cost-Benefit Analysis and the Environment. Aalto University publication series DOCTORAL DISSERTATIONS.
Palviainen et al. 2015. Land Cover Controls the Export of Terminal Electron Acceptors from Boreal Catchments. Ecosystems 18:343-358, DOI: 10.1007/s10021-014-9832-y.
Lehtoranta et al. 2015. Labile organic carbon regulates phosphorus release from eroded soil. AMBIO 44:263–S273, DOI 10.1007/s13280-014-0620-x.
Mattsson et al. 2015. Spatial and temporal variability of organic C and N concentrations and export from 30 boreal rivers induced by land use and climate. Science of the Total Environment 508:145-154.
Lehtoranta et al. 2014. Coupled biogeochemical cycles and ecosystem services. Reports of the Finnish Environment Institute 21/2014. http://hdl.handle.net/10138/135577.
Posters
TEAQUILA poster
AKVA vuosiseminaari 2014. Palviainen et al. Land Cover Controls the Export of Terminal Electron Acceptors from Boreal Catchments.
European Geosciences Union General Assembly EGU 2015. Palviainen et al. Land cover controls the export of terminal electron acceptors from boreal catchments. Abstract: http://meetingorganizer.copernicus.org/EGU2015/EGU2015-2472.pdf
AKVA vuosiseminaari 2015. Mattsson et al. Runoff has a land cover specific effect on the terminal electron acceptors in the boreal streams.
Presentations
Lehtoranta et al.: Do mineralization pathways affect dissolution of silica? Isotopes in biogenic silica, IBiS Helsinki 2013 3.-5. June 2013
TEAQUILA AKVA vuosiseminaari Lammi 12.11.2014
Ahlvik and Iho: Economics of artificial oxygenation of the Baltic Sea. Presentation June 26 2015 at the European Association Of Environmental And Resource Economists 21st Annual Conference, Helsinki Finland.
Ahlvik: Lunch seminar in Norwegian School of Economics, 29.3. "Experimentation and Ecological Engineering – breathing life into the Baltic Sea".
Lehtoranta: Terminaalisten elektroniakseptorien kuormitus, pidättyminen ja huomiointi vesiensuojelussa. AKVA vuosiseminaari 2015 Tuusula 24.-25.11.2015.
Iho: Tieteidenvälisyyden inni ja haasteet hankkeessanne. AKVA vuosiseminaari 2015 Tuusula 24.-25.11.2015.
Iho et al.: Efficient Abatement of Transboundary Nitrogen with Externality Dependent Retention. Helsinki Centre of Economic Research (HECER), Environmental, Resource and Energy Economics Seminar. Helsinki, Finland. April 26 2016.
Lehtoranta et al.: Lakes modify the export of terminal electron acceptors in boreal catchments. ASLO 2016 Summer meeting, Santa Fe, New Mexico, June 2016
Kortelainen et al.: Land use and climate control the export of iron from boreal catchments. ASLO 2016 Summer meeting, Santa Fe, New Mexico, June 2016
Iho et al.: Efficient Abatement of Transboundary Nitrogen with Externality Dependent Retention. Turku school of economics, department of economics seminar. Turku, Finland. November 24 2016.
Lehtoranta: Coupled biogeochemical cycles need to be acknowledged in optimal eutrophication management. AKVA final seminar Helsinki 8.-9.12.2016.
Iho: Optimal eutrophication management and coupled biogeochemical cycles. AKVA final seminar Helsinki 8.-9.12.2016.