The Lena River forms a delta, one of the largest in world. entire territory delta is part Ust-Lensky State Natural Reserve. located beyond Arctic Circle continuous permafrost zone. crossed by numerous channels and has lakes, streams, hollows, swamps. In Russian sector, ambitious plans for development oil industries are being implemented. This study goal was to determine species composition alga...

The important development of digital soil mapping (DSM) these last decades has led to a large number maps properties with increasingly finer raster size. Map resolution is mostly determined by expert knowledge or matching the existing data, while scale recognized as major issue. Using pH and C/N ratio describing surface horizon forest soils estimated bioindication, we evaluated effect changes o...

This paper presents a biological method for assessing the ecological state of water body. The reservoir Gypsy Pond, located in residential complex Spring Valley Sovetsky District Volgograd, was chosen as object research. In process reservoir, bioindication quality using algae according to T.Ya. Ashikhmina used. is quite simple and accessible its application. definition based on establishing deg...

Mean Trophic Rank (MTR), a new British biological macrophyte-based method for assessing trophic status of rivers was applied in Poland in 2000-2001. The occurrence and abundance of 86 aquatic plant species was recorded at 48 sites on 19 rivers in the lowland part of Poland. Forty-six of these species are MTR scoring taxa used in the British system, but another 40 species were recorded of which ...