Gradients in species composition of Central European arable weed vegetation

CIMALOVÁ, Šárka and Zdeňka LOSOSOVÁ. Gradients in species composition of Central European arable weed vegetation. In Book of Abstracts. 2008.

Basic information

Original name

Gradients in species composition of Central European arable weed vegetation

Name in Czech

Gradienty v druhovém složení středoevropské vegetace polních plevelů

Authors

CIMALOVÁ, Šárka (203 Czech Republic) and Zdeňka LOSOSOVÁ (203 Czech Republic, guarantor)

Edition

Book of Abstracts, 2008

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Other information

Language

English

Type of outcome

Konferenční abstrakt

Field of Study

10600 1.6 Biological sciences

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14410/08:00025878

Organization unit

Faculty of Education

Keywords in English

cereals; root crops;

Tags

cereals, root crops

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Abstract

V originále

Factors determining diversity in arable field weed vegetation were studied in northeastern part of the Czech Republic on a data set of 174 plots. The species records were taken in 2001-2003 from 20m2 relevé plots situated at the field edges.As predictors, the climatic and edafic variables were used together with crop type and season. for analyses of gradients in species composition ordination methods were used. Gross and net effect of each variable were calculated. Net effect was tested by series of partial CCAs for each variable with other variables as covariables. The structure of species with the highest fit and score along the first ordination axis was analysed. The main proportion of variability in species composition was explained by crop type (cereals, and root crop). The second important were climatic variables, followed by season, soil reaction, and soil type. We have confirmed that a power of environmental variables affecting changes in weed vegetation structure strongly depends on character and size of study area. On larger and heterogenous areas with variable ecological conditions, the climatic and edaphic conditions have stronger effect than on smaller more homogenous areas.

In Czech

Faktory, které ovlivňují změny v druhovém složení plevelové vegetace, byly studovány v severovýchodní části České republiky.

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Links

MSM0021622416, plan (intention)

Name: Diverzita biotických společenstev a populací: kauzální analýza variability v prostoru a čase Investor: Ministry of Education, Youth and Sports of the CR, Diversity of Biotic Communities and Populations: Causal Analysis of variation in space and time