Sphagnum distribution patterns along environmental gradients in Bulgaria

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Authors

HÁJKOVÁ Petra HÁJEK Michal

Year of publication 2007
Type Article in Periodical
Magazine / Source Journal of Bryology
MU Faculty or unit

Faculty of Science

Citation
Field Ecology
Keywords Balkans; ecological demands; fens; mineral richness; mires; niche diversification; groundwater
Description The distribution patterns of 18 Sphagnum species along base-richness and altitudinal gradients were studied in Bulgarian treeless wetlands. Of 483 spring and mire sites studied, 202 samples contained some Sphagnum species. The significance of Sphagnum responses to environmental gradients was tested by comparing generalized additive models against the null model. Many Sphagnum species displayed a significant response to the altitudinal gradient. Several species were clearly linked to low or to high altitudes, but the realized niche of other species was wide with respect to altitude. Most species significantly responded to water pH, both above and below the timberline. Only a few species had a significant response to conductivity above the timberline.
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