Popov S.Yu.1 2016. The climatic patterning of Sphagnum sect. Sphagnum species distribution in the East European Plain // Arctoa. Vol. 25: 332–352 [in English].

1 Lomonosov Moscow State University, Faculty of Biology, Geobotany Dept., Leninskie Gory Str. 1-12, Moscow 119234 Russia; e-mail: s_yu_popov@rambler.ru

KEYWORDS: biogeography, ecology, ARCGIS, BIOCLIM

ABSTRACT. The purpose of this research is to correlate distribution of Sphagnum species with local climatic factors in the East European Plain. Six species of Sphagnum from section Sphagnum, i.e., S. magellanicum, S. centrale, S. palustre, S. papillosum, S. austinii, and S. affine were selected. The graded data on their abundance and the species number for 138 localities  were mapped into unit  squares of 10´10 km by  using GRID coverage, to construct several delineated zones of occurence/abundance. For analysis, the matrix was augmented by extended data from the BIOCLIM database.  Regression analysis revealed strong correlation between species distribution  and temperature, while abundance of the species showed high correlation with maximum relative humidity in two months, August and September, being especially high for most common species, S. magellanicum (0.85 and 0.83) and S. centrale (0.81 и 0.76). Distribution area of Sphagnum palustre is restricted by precipitation in the whole warm part of the year, while Sphagnum papillosum avoids regions with low relative humidity in early summer. The local number of species correlates with relative humidity in summer. The developed technique  demonstrates a possible way of applying the climatic data to the analysis of the bryophyte distribution  in extensive territories.

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doi 10.15298/arctoa.25.26