Suo - Mires and peat vol. 57 no. 3 | 2006
Kahden kasvupaikkaluokitusmenetelmän vertailu suon kasvillisuuskartoituksessa.
English title: Comparative application of two vegetation classification approaches to large-scale mapping of bog vegetation.
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This article focuses on geobotanical mapping with special emphasis on mire vegetation.
A brief review of the history of mire mapping in Russia is given. The purpose
of the research reported here is to promote the application of cartographic methods to
phytosociological studies as well as to contribute to further development of methods
for large-scale mapping of mire vegetation. Kudrovsky mire massif (Leningrad region,
NW Russia) was chosen as the study area. Two vegetation maps were prepared on the
basis of different vegetation classifi cation approaches, namely the dominant (ecologicphytocoenotic)
and fl oristic (Braun-Blanquet) methods. The same vegetation relevé
data were classifi ed using both approaches and the resulting classifi cations were used
to construct legends for the maps. The traditions and problems of Russian vegetation
cartography are briefl y discussed.
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Galanina,
Kainuu Regional Environment Centre, Friendship Park Research Centre, Lentiirantie 342, FIN-88900 Kuhmo, Finland
Sähköposti:
ei.tietoa@nn.oo
Lieropopulaatioiden pitkäaikainen muodostuminen suonpohjien nurmiviljelyksillä Irlannissa.
English title: Long-term establishment of earthworm populations in grassland on reclaimed industrial cutaway peatland in Ireland.
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Earthworm populations in reclaimed cutaway peatland soils in central Ireland were sampled 20-30 years after reclamation and establishment of grass-clover leys following industrial peat mining. Nine earthworm species in total were present, with 4-7 species per field in the six fields sampled. Population densities were 130-506 individuals m-2, and biomass ranged from 80 to 279 g m-2. Thus, under favourable conditions reclaimed cutaway peat soils can support earthworm populations comparable in density and biomass to those typical of the most fertile mineral soils. However, species richness tended to be lower than in comparable grasslands on mineral soils, and reclaimed peat appears to be unfavourable for larger deep-burrowing species such as Lumbricus friendi and Lumbricus terrestris.
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Curry,
UCD School of Biology and Environmental Science, University College Dublin, Belfield, Dublin 4, Ireland
Sähköposti:
ei.tietoa@nn.oo
- Schmidt, Sähköposti: ei.tietoa@nn.oo
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