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Featured researches published by Raimo Heikkilä.


Air, Soil and Water Research | 2010

Metal Distribution in Lakes Surrounding the Kostomuksha Iron Mine and Ore Dressing Mill in Northwestern Russia

Jukka Lehto; Merja Lusa; Juhani Virkanen; Jussi Paatero; Gergely Várkonyi; Raimo Heikkilä; Boris Kashevarov; Eugeny Ieshko

Metal distributions in lakes surrounding Kostomuksha iron mine and ore dressing mill were explored to study the effects of the mill on the state of the lakes. Both surface water and 10 cm sediment core samples were taken from six lakes in the Russian side and another two in the Finnish side at a maximum distance of 70 kilometres from the plant. Concentrations of thirteen metals, phosphorus and sulphur were determined in waters and sediments by ICP-MS after filtration of the water samples and acid digestion of the sediment samples. No increase of these elements was observed in lakes in southwestern direction towards Finland where air transport was the only pathway. In the northwestern direction where there are also water releases from a waste pond of the plant increasing concentrations of Ca, Mn, S, Fe and As towards the plant were seen both in water and sediments phases. This was also the trend for Na, K and Mg in water and for Zn, Pb, Cd and Hg in the sediment. No systematic change was seen in case of Al, P and Ni. It is likely that elevated water concentrations of at least K, S and As are due to water releases from the waste pond but for other elements the source is not quite evident.


Archive | 2002

Spatial variation of mire surface water chemistry and vegetation in northeastern Finland

Teemu Tahvanainen; Tapani Sallantaus; Raimo Heikkilä; Kimmo Tolonen


Silva Fennica | 2002

Spatial tree age structure and fire history in two old-growth forests in eastern Fennoscandia

Tuomo Wallenius; Timo Kuuluvainen; Raimo Heikkilä; Tapio Lindholm


Archive | 2006

Finland - land of mires

Tapio Lindholm; Raimo Heikkilä


Archive | 2001

Complexes, vegetation, flora and dynamics of Kauhaneva mire system, western Finland

Raimo Heikkilä; Oleg Kuznetsov; Tapio Lindholm; Kaisu Aapala; Vladimir Antipin; Tamara Djatshkova; Pavel Shevelin


Annales Botanici Fennici | 1988

Distribution and ecology of Sphagnum molle in Finland

Raimo Heikkilä; Tapio Lindholm


Archive | 1997

Ecosystems, fauna and flora of the Finnish-Russian Nature Reserve Friendship

Tapio Lindholm; Raimo Heikkilä; Marjo Heikkilä


Archive | 2012

Mires from pole to pole

Tapio Lindholm; Raimo Heikkilä


Archive | 2006

Mires of Finland – Daughters of the Baltic Sea

Raimo Heikkilä; Tapio Lindholm; Teemu Tahvanainen


Archive | 1997

Vegetation of Lishkmokh mire in Vodlozersky National Park, eastern Karelian republic, Russia

Vladimir Antipin; Raimo Heikkilä; Tapio Lindholm; Pavel Tokarev

Collaboration


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Tapio Lindholm

Finnish Environment Institute

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Teemu Tahvanainen

University of Eastern Finland

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Oleg Kuznetsov

Russian Academy of Sciences

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Vladimir Antipin

Russian Academy of Sciences

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Heikki Simola

University of Eastern Finland

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Tuomo Wallenius

Finnish Forest Research Institute

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Jukka Lehto

University of Helsinki

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Jussi Paatero

Finnish Meteorological Institute

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