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@article{964399,
author = {Daniels, Fred and de Molenaar, Johannes G. and Chytrý, Milan and Tichý, Lubomír},
article_location = {Oxford},
article_number = {2},
doi = {http://dx.doi.org/10.1111/j.1654-109X.2010.01107.x},
keywords = {Climate change; Low-Arctic tundra; Monitoring; Multivariate analysis; Phytosociology; Plant communities; Species richness},
language = {eng},
issn = {1402-2001},
journal = {Applied Vegetation Science},
title = {Vegetation change in Southeast Greenland? Tasiilaq revisited after 40 years},
url = {http://onlinelibrary.wiley.com/doi/10.1111/j.1654-109X.2010.01107.x/abstract},
volume = {14},
year = {2011}
}
TY - JOUR
ID - 964399
AU - Daniels, Fred - de Molenaar, Johannes G. - Chytrý, Milan - Tichý, Lubomír
PY - 2011
TI - Vegetation change in Southeast Greenland? Tasiilaq revisited after 40 years
JF - Applied Vegetation Science
VL - 14
IS - 2
SP - 230-241
EP - 230-241
PB - Wiley-Blackwell
SN - 14022001
KW - Climate change
KW - Low-Arctic tundra
KW - Monitoring
KW - Multivariate analysis
KW - Phytosociology
KW - Plant communities
KW - Species richness
UR - http://onlinelibrary.wiley.com/doi/10.1111/j.1654-109X.2010.01107.x/abstract
L2 - http://onlinelibrary.wiley.com/doi/10.1111/j.1654-109X.2010.01107.x/abstract
N2 - Questions: Are there changes in species composition of the oceanic, Low-Arctic tundra vegetation after 40 years? Can possible changes be attributed to climate change? Location: Ammassalik Island near Tasiilaq, Southeast Greenland. Methods: Species composition and cover of 11 key vegetation types were recorded in 110 vegetation survey plots in 1968–1969 and in 11 permanent plots in 1981. Recording was repeated in 2007. Temporal changes in species composition and cover between the surveys were tested using permutation tests linked with constrained ordinations for vegetation types, and Mann–Whitney tests for individual species. Changes in vegetation were related to climate change. Results: Although climate became warmer over the studied period, most of the vegetation types showed minor changes. The changes were most conspicuous in mire and snowbed vegetation, such as the Carex rariflora mire and Hylocomium splendens snowbed. In the C. rariflora mire, species number and cover of vascular plants and cover of bryophytes increased, whereas in the H. splendens snowbed species numbers of vascular plants, bryophytes, and also lichens increased. Lichen richness increased in the Carex bigelowii snowbed and cover of bryophytes in the Salix herbacea snowbed. No such changes occurred in the Alchemilla glomerulans meadow, Alchemilla alpina snowbed and Phyllodoce coerulea heath. There was no change of species composition within the Salix glauca scrub, A. alpina snowbed, lichen grassland and the Empetrum nigrum and Phyllodoce coerulea heaths. Most changes resulted from increasing frequency or cover of some species; there were very few decreasing species. Most of the increasing species indicate drier substrate conditions. Conclusions: Only minor changes in species composition and cover were detected in the vegetation types studied. These changes were probably caused by milder winters and warmer summers during the years before the 2007 sampling. Climate warming may have reduced the duration of snow cover and soil moisture, particularly in snowbed and mire habitats, where species composition change was most pronounced. However, its magnitude was insufficient to cause a major change in species composition. Thus, on the level of plant community types, tundra vegetation near Tasiilaq was rather stable over the last 40 years.
ER -
DANIELS, Fred, Johannes G. DE MOLENAAR, Milan CHYTRÝ a Lubomír TICHÝ. Vegetation change in Southeast Greenland? Tasiilaq revisited after 40 years. \textit{Applied Vegetation Science}. Oxford: Wiley-Blackwell, 2011, roč.~14, č.~2, s.~230-241. ISSN~1402-2001. Dostupné z: https://dx.doi.org/10.1111/j.1654-109X.2010.01107.x.
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