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@article{1813357,
author = {Hájek, Michal and Hájková, Petra and Apostolova, Iva and Sopotlieva, Desislava and Goia, Irina and Dítě, Daniel},
article_number = {Oct},
doi = {http://dx.doi.org/10.3897/VCS/2021/69118},
keywords = {Balkans; Bulgaria; endemic and relict species; mires; rich fens; Romania; Sphagno warnstorfii-Tomentypnion nitentis; vegetation survey},
language = {eng},
issn = {2683-0671},
journal = {Vegetation Classification and Survey},
title = {The vegetation of rich fens (Sphagno warnstorfii-Tomentypnion nitentis) at the southeastern margins of their European range},
url = {https://doi.org/10.3897/VCS/2021/69118},
volume = {2},
year = {2021}
}
TY - JOUR
ID - 1813357
AU - Hájek, Michal - Hájková, Petra - Apostolova, Iva - Sopotlieva, Desislava - Goia, Irina - Dítě, Daniel
PY - 2021
TI - The vegetation of rich fens (Sphagno warnstorfii-Tomentypnion nitentis) at the southeastern margins of their European range
JF - Vegetation Classification and Survey
VL - 2
IS - Oct
SP - 177-190
EP - 177-190
PB - Pensoft Publishers
SN - 26830671
KW - Balkans
KW - Bulgaria
KW - endemic and relict species
KW - mires
KW - rich fens
KW - Romania
KW - Sphagno warnstorfii-Tomentypnion nitentis
KW - vegetation survey
UR - https://doi.org/10.3897/VCS/2021/69118
N2 - Rich fens of the Sphagno warnstorfii-Tomentypnion nitentis alliance require a specific combination of base richness and climate to occur. Their rarity at the southeastern margins of their European range has previously prevented rigorous vegetation classification. We asked how many associations may be delimited here and whether some of them are restricted to the high Balkan Mountains showing high endemicity. Study area: Entire territories of Bulgaria and Romania. Methods: We compiled all available vegetation-plot records, including some hitherto unprocessed data. We classified them by both divisive (modified TWINSPAN) and agglomerative (beta-flexible clustering) numerical classification method, with OPTIMCLASS1 applied to set the number of clusters. A semi-supervised approach (k-means) was additionally applied to confirm the classification of Southern-Carpathian (Romania) rich fens, where some Balkan taxa occur. Differences in base richness and elevation were tested by one-way ANOVA with Tukey’s pairwise test. Results: Three associations were delimited and all three occur in Bulgaria, from where only one association had been previously reported. Two associations characterised by Sphagnum contortum and Balkan and Southern-European species occur in Bulgaria, but not in Romania, one at lower elevations around 1,200 m, and one at higher elevations around 2,000 m where pH is lower. One lower-elevation (around 1,300 m) association with S. warnstorfii and S. teres is shared between Romania, Bulgaria and Central Europe. Conclusions: We have described a new high-mountain association, with two subassociations that differ by successional stage and dominant peat moss species (S. contortum and S. warnstorfii, respectively). These subassociations could be reconsidered when more data from other Balkan countries are available. Rich fens in southeastern Europe are rare, have a diverse vegetation, and are deserving of the further attention of nature conservation authorities and vegetation scientists.
ER -
HÁJEK, Michal, Petra HÁJKOVÁ, Iva APOSTOLOVA, Desislava SOPOTLIEVA, Irina GOIA a Daniel DÍTĚ. The vegetation of rich fens (Sphagno warnstorfii-Tomentypnion nitentis) at the southeastern margins of their European range. \textit{Vegetation Classification and Survey}. Pensoft Publishers, 2021, roč.~2, Oct, s.~177-190. ISSN~2683-0671. Dostupné z: https://dx.doi.org/10.3897/VCS/2021/69118.
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