Can plant community ordinations be affected by various sample plot sizes in grasslands?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F05%3A00013167" target="_blank" >RIV/00216224:14310/05:00013167 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Can plant community ordinations be affected by various sample plot sizes in grasslands?

Original language description

Vegetation samples from plots that are stored in phytosociological databases often differ by one or two orders of magnitude in size, even within a single vegetation type. This fact may influence vegetation analysis, but the extent of this possible influence has not been investigated so far. The effect of sample plot size on ordination results was investigated in grassland vegetation in southern Moravia (Czech Republic), using data from nested plots of 1, 4, 16, 25 and 49 m2, placed along two ecologicalgradients: long gradient (including different vegetation types and various climatic condition in a larger area) and short gradient (small area with a floristically homogeneous vegetation type). In both gradients the smallest plot sizes showed the most deviating patterns in ordinations, while samples of larger sizes gave similar results. The transformation of percentage cover also affected the results, more so when samples were collected along short ecological gradient. Samples differing

Czech name

Mohou být ordinace lučních společenstev ovlivněny velikostí ploch?

Czech description

Analýzy vegetačních snímků jsou ovlivněny velikosti, na které tyto byly zapsány. Výsledky ukazují, že ordinace jsou různými velikostmi velmi ovlivněné.

Type

M - Conference organization

CEP classification

EF - Botany

OECD FORD branch

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Project

<a href="/en/project/GA206%2F05%2F0020" target="_blank" >GA206/05/0020: Vegetation of the Czech Republic: formalized typology, monograph and expert system</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2005

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Event location

Vienna

Event country

AT - AUSTRIA

Event starting date

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Event ending date

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Total number of attendees

4000

Foreign attendee count

3900

Type of event by attendee nationality

WRD - Celosvětová akce