J 2004

Interspecific associations in phytosociological data sets: how do they change between local and regional scale?

KUŽELOVÁ, Ilona and Milan CHYTRÝ

Basic information

Original name

Interspecific associations in phytosociological data sets: how do they change between local and regional scale?

Name in Czech

Mezidruhové asociace ve fytocenologických datových souborech: jak se mění mezi lokálním a regionálním měřítkem?

Authors

KUŽELOVÁ, Ilona (203 Czech Republic, guarantor) and Milan CHYTRÝ (203 Czech Republic)

Edition

Plant Ecology, Dordrecht, 2004, 1385-0237

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.275

RIV identification code

RIV/00216224:14310/04:00011524

Organization unit

Faculty of Science

UT WoS

000221685500009

Keywords in English

Ecological scale; numerical methods; phytosociology; plant communities; sociological species groups; vegetation survey
Změněno: 5/9/2005 09:07, prof. RNDr. Milan Chytrý, Ph.D.

Abstract

V originále

Interspecific associations detected in phytosociological data sets sampled in local areas can reflect locally specific combinations of environmental factors and may thus differ from the interspecific associations existing on a regional scale. As a result, vegetation units derived from numerical classifications of local data sets can accurately reflect local environmental gradients, but their boundaries or spectra of diagnostic species must be frequently adjusted when transferred to the regional scale. Local vegetation classifications can be useful for some purposes, but regional classifications are superior, as they facilitate communication among the researchers from different areas. We demonstrated changes in interspecific associations between regional and local scale, using a data set of 14 589 relevés of herbaceous vegetation of the Czech Republic, and 16 local subsets of this national data set. We focused on sociological species groups, derived statistically in the national data set. Local data sets differed from the national data set to different extent. The results suggest that interspecific associations existing on regional scale are best reproduced in those local areas which have a high habitat heterogeneity or which have a central position along the major gradients existing on regional scale.

In Czech

Popis obecných zákonitostí mezidruhových asociací ve fytocenologických datových souborech.

Links

GA206/02/0957, research and development project
Name: Formalizovaná klasifikace polopřirozené travinné vegetace České republiky
Investor: Czech Science Foundation, Formalized classification of the semi-natural grassland vegetation of the Czech Republic