Diversity of weed vegetation in the Czech Republic and Slovakia

D 2006

Diversity of weed vegetation in the Czech Republic and Slovakia

LOSOSOVÁ, Zdeňka

Základní údaje

Originální název

Diversity of weed vegetation in the Czech Republic and Slovakia

Název česky

Diverzita vegetace polních plevelů v České republice a na Slovensku

Autoři

LOSOSOVÁ, Zdeňka (203 Česká republika, garant)

Vydání

Catania, Italy, Abstracts 15th European vegetation survey workshop Vegetation in agricultural landscapes and "Natura 2000" od s. 35-35, 1 s. 2006

Nakladatel

Universita di Catania

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10600 1.6 Biological sciences

Stát vydavatele

Itálie

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/06:00016707

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

arable field; gradient analysis; classification; Stellarietea mediae

Štítky

arable field, CLASSIFICATION, gradient analysis, Stellarietea mediae

Příznaky

Mezinárodní význam

Změněno: 21. 12. 2006 10:04, doc. RNDr. Zdeňka Lososová, Ph.D.

Anotace

ORIG CZ

V originále

Major broad-scale gradients in species composition and their underlying factors were studied for weed vegetation of arable land in the Czech Republic and Slovakia. A selection of 2653 geographically stratified relevés sampled between 19542003 was used for gradient analysis and numerical classification. Canonical correspondence analysis revealed that species composition of weed vegetation mainly varied with altitude, which was associated with decreasing temperature, increasing precipitation and lower base status of the soils. Proportion of hemicryptophytes to therophytes increased at higher altitudes. Species richness increased and beta diversity decreased with increasing altitude. The second most important gradient of weed species composition was associated with seasonal changes, resulting in striking differences between weed communities developed in spring and summer. The third gradient reflected long term changes in weed vegetation over past decades. Proportion of hemicryptophytes to therophytes, and species richness decreased with time. Crop plants and associated agricultural management had a less pronounced but still significant effect on weed species composition than the broad-scale environmental gradients and temporal changes. Relevés were classified into seven main groups using cluster analysis. For each group diagnostic species were determined using statistical calculation of fidelity. The classification reflected the major gradients as detected by canonical correspondence analysis, with a clear distinction between lowland and highland communities and with additional emphasis on the dichotomy between cereal and root-crop cultures. A separate group for vernal communities was also distinguished. The groups resulting from numerical analysis were compared with traditional phytosociological units.

Česky

Byly popsány hlavní gradienty určující druhové složení vegetace polních plevelů v České republice a na Slovensku a charakterizovány jednotlivé typy této vegetace

Návaznosti

MSM0021622416, záměr

Název: Diverzita biotických společenstev a populací: kauzální analýza variability v prostoru a čase

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Diverzita biotických společenstev: kauzální analýza variability v prostoru a čase

Citovat

LOSOSOVÁ, Zdeňka. Diversity of weed vegetation in the Czech Republic and Slovakia. In Abstracts 15th European vegetation survey workshop Vegetation in agricultural landscapes and "Natura 2000". Catania, Italy: Universita di Catania, 2006, s. 35-35.

@inproceedings{632124,
   author = {Lososová, Zdeňka},
   address = {Catania, Italy},
   booktitle = {Abstracts 15th European vegetation survey workshop Vegetation in agricultural landscapes and "Natura 2000"},
   keywords = {arable field; gradient analysis; classification; Stellarietea mediae},
   language = {eng},
   location = {Catania, Italy},
   pages = {35-35},
   publisher = {Universita di Catania},
   title = {Diversity of weed vegetation in the Czech Republic and Slovakia},
   year = {2006}
}

TY  - JOUR
ID  - 632124
AU  - Lososová, Zdeňka
PY  - 2006
TI  - Diversity of weed vegetation in the Czech Republic and Slovakia
PB  - Universita di Catania
CY  - Catania, Italy
KW  - arable field
KW  - gradient analysis
KW  - classification
KW  - Stellarietea mediae
N2  - Major broad-scale gradients in species composition and their underlying factors were studied for weed vegetation of arable land in the Czech Republic and Slovakia. A selection of 2653 geographically stratified relevés sampled between 19542003 was used for gradient analysis and numerical classification. Canonical correspondence analysis revealed that species composition of weed vegetation mainly varied with altitude, which was associated with decreasing temperature, increasing precipitation and lower base status of the soils. Proportion of hemicryptophytes to therophytes increased at higher altitudes. Species richness increased and beta diversity decreased with increasing altitude. The second most important gradient of weed species composition was associated with seasonal changes, resulting in striking differences between weed communities developed in spring and summer. The third gradient reflected long term changes in weed vegetation over past decades. Proportion of hemicryptophytes to therophytes, and species richness decreased with time. Crop plants and associated agricultural management had a less pronounced but still significant effect on weed species composition than the broad-scale environmental gradients and temporal changes. Relevés were classified into seven main groups using cluster analysis. For each group diagnostic species were determined using statistical calculation of fidelity. The classification reflected the major gradients as detected by canonical correspondence analysis, with a clear distinction between lowland and highland communities and with additional emphasis on the dichotomy between cereal and root-crop cultures. A separate group for vernal communities was also distinguished. The groups resulting from numerical analysis were compared with traditional phytosociological units.
ER  -

LOSOSOVÁ, Zdeňka. Diversity of weed vegetation in the Czech Republic and Slovakia. In \textit{Abstracts 15th European vegetation survey workshop Vegetation in agricultural landscapes and ''Natura 2000''}. Catania, Italy: Universita di Catania, 2006, s.~35-35.

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