Detailed Information on Publication Record
2006
Local ranges of phytosociological associations: are they reflected in numerical classification?
KNOLLOVÁ, Ilona, Milan CHYTRÝ, Lubomír TICHÝ and Ondřej HÁJEKBasic information
Original name
Local ranges of phytosociological associations: are they reflected in numerical classification?
Name in Czech
Lokální areály fytocenologických asociací: odrážejí se v numerické klasifikaci?
Authors
KNOLLOVÁ, Ilona (203 Czech Republic), Milan CHYTRÝ (203 Czech Republic, guarantor), Lubomír TICHÝ (203 Czech Republic) and Ondřej HÁJEK (203 Czech Republic)
Edition
Biologia, Bratislava, Slovak Academy of Sciences, 2006, 0006-3088
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
Germany
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 0.213
RIV identification code
RIV/00216224:14310/06:00015588
Organization unit
Faculty of Science
UT WoS
000236238100011
Keywords in English
dry grasslands; ecological scale; vegetation survey
Změněno: 16/12/2006 18:44, prof. RNDr. Milan Chytrý, Ph.D.
V originále
In the tradition of European phytosociology, delimitations of vegetation units such as associations are mostly based on data from small areas where more detailed vegetation sampling has been carried out. Such locally delimited vegetation units are often accepted in large-scale synthetic classifications, e.g. national vegetation monographs, and tentatively assigned to a small geographical range, forming groups of similar (vicarious) vegetation units in different small areas. These vicarious units, however, often overlap in species composition and are difficult to recognize from each other. We demonstrate this issue using an example of the classification of dry grasslands (Festuco-Brometea) in the Czech Republic. The standard vegetation classification of the Czech Republic supposes that the majority of accepted associations (66 out of 68) have a restricted distribution in one of the two major regions, Bohemia or Moravia. We compared the classification into traditional associations with the numerical classification of 1440 phytosociological relevés from the Czech Republic, in order to test whether the traditionally recognized associations with small geographical ranges are reflected in numerical classification. In various comparisons, the groups of relevés identified by numerical analysis occupied larger areas than the traditional associations. This suggests that with consistent use of total species composition as the vegetation classification criterion, the resulting classification will usually include more vegetation units with larger geographical ranges, while many of the traditional local associations will disappear.
In Czech
Analýzami souboru fytocenologických dat z České republiky bylo dokázáno, že velikost areálu tradičních subjektivně rozlišovaných fytocenologických je menší než velikost areálu vegetačních typů odvozených numerickou klasifikací. Tradiční subjektivní klasifikace má tedy tendenci vytvářet jednotky spíše lokálního charakteru.
Links
| GA206/05/0020, research and development project |
| ||
| MSM0021622416, plan (intention) |
|