2004
Environmental determinants of variation in Czech Calthion wet meadows: a synthesis of phytosociological data
HÁJEK, Michal a Petra HÁJKOVÁZákladní údaje
Originální název
Environmental determinants of variation in Czech Calthion wet meadows: a synthesis of phytosociological data
Autoři
HÁJEK, Michal (203 Česká republika, garant) a Petra HÁJKOVÁ (203 Česká republika)
Vydání
Phytocoenologia, Berlin/Stuttgart, Gebrüder Borntraeger, 2004, 0340-269X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 0.389
Kód RIV
RIV/00216224:14310/04:00028894
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000220317000002
Klíčová slova anglicky
Central Europe; Calthenion; environmental gradients; factors; Filipendulenion; nutrient availability; plant community; productivity; soil reaction; species richness; vegetation; wetlands
Štítky
Změněno: 29. 6. 2009 13:59, prof. Mgr. Michal Hájek, Ph.D.
Anotace
V originále
A comprehensive data set of Czech Calthion wet meadow vegetation and relevant environmental data were collected and published by E. Balátová in 1972- 1997. This paper presents a synthesis of this phytosociological data set with the aim of (i) finding the main gradients in Calthion wet meadow vegetation and relating them to soil chemistry factors, (ii) comparing soil chemistry within different soil depths and various vegetation types and (iii) evaluating each soil chemistry variable with respect to its ability to explain variation in wet meadow vegetation. Correspondence analysis revealed that vegetation changes along two major gradients of the same importance: (i) from species-rich communities to the species-poor, tall-forb communities of highly-productive habitats and (ii) from neutrophytic communities to acidophytic communities, mostly of mountain habitats. The first PCA axis of environmental variables is clearly identified as the axis of acidity, the second one as the axis of nutrients. The factors connected with soil acidity and base saturation (e. g. pH, H+, Al3+, Ca2+) are inter-correlated, and they are the most important of the measured factors for vegetation composition. This is also reflected in traditional phytosociological classification. Nutrients (N, P, K) are also inter-correlated and explain less, but still a very significant part of vegetation variation. However, the Filipendulenion communities, which often developed after cessation of mowing or as a result of eutrophication, are only weakly differentiated according to the amount of available soil nutrients. This apparent paradox is presumably caused by nutrient depletion during the development of these highly-productive stands. A relationship between their development and calcium concentration in the topmost soil layer has also been found.
Návaznosti
GA206/02/0957, projekt VaV |
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MSM 143100010, záměr |
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