Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Anu Liikanen"'
Publikováno v:
Biogeochemistry. 91:105-116
Intact sediment cores from rivers of the Bothnian Bay (Baltic Sea) were studied for denitrification based on benthic fluxes of molecular nitrogen (N2) and nitrous oxide (N2O) in a temperature controlled continuous water flow laboratory microcosm unde
Publikováno v:
Biogeochemistry. 90:193-208
We studied concentrations of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) in the eutrophic Temmesjoki River and Estuary in the Liminganlahti Bay in 2003–2004 and evaluated the atmospheric fluxes of the gases based on measured concent
Publikováno v:
Biogeochemistry. 88:63-72
Denitrification rates and nitrous oxide (N2O) effluxes were measured at different temperatures and for different oxygen concentrations in the sediments of a eutrophied river entering the Bothnian Bay. The experiments were made in a laboratory microco
Autor:
Satu Maaria Karjalainen, Hannu Nykänen, Jari T. Huttunen, Anu Liikanen, Pertti J. Martikainen, Kaisa Heikkinen, Tero Väisänen
Publikováno v:
Ecological Engineering. 26:241-251
Constructed wetlands (CW), widely used to remove nutrients from runoff waters, transform some of the carbon and nitrogen they receive into greenhouse gases, carbon dioxide (CO 2 ), methane (CH 4 ), and nitrous oxide (N 2 O), and may therefore have ad
Autor:
Satu Maaria Karjalainen, Tero Väisänen, Jari T. Huttunen, A. Ylitolonen, Kaisa Heikkinen, Bjørn Kløve, Anu Liikanen, Pertti J. Martikainen
Publikováno v:
SIL Proceedings, 1922-2010. 29:612-617
Publikováno v:
European Journal of Soil Science. 54:625-631
Drained organic soils contribute substantial amounts of nitrous oxide to the global atmosphere, and we should be able to estimate this contribution. We have investigated when the fluxes of N 2 O from drained forested or cultivated organic soils could
Publikováno v:
Soil Biology and Biochemistry. 35:689-700
Nitrous oxide emissions were studied with a static chamber technique during 2 years from a drained organic soil in eastern Finland. After drainage, the soil was forested with birch ( Betula pendula Roth) and 22 years later, part of the forest was fel
Publikováno v:
Soil Use and Management. 19:73-79
Annual methane fluxes from an organic soil in eastern Finland, originally drained and planted with birch (Betula pendula) and then later cultivated, were studied for two years using a chamber technique. The agricultural soils growing grass or barley
Autor:
Jouko Silvola, Pertti J. Martikainen, Sanna Saarnio, Jukka Alm, Anu Liikanen, Eeva Ratilainen
Publikováno v:
Freshwater Biology. 48:500-511
1. The effects of increasing CO 2 and nitrogen loading and of a change in water table and temperature on littoral CH4, N 2 O and CO 2 fluxes were studied in a glasshouse experiment with intact sediment cores including vegetation (mainly sedges), take
Publikováno v:
Water Research. 37:1-10
The release of nutrients from the sediment into the water column, i.e. internal nutrient loading, is an important problem in the restoration of eutrophied lakes. The ebullition of gases, mainly methane, has been identified as the key process in nutri