Predictive power of vegetation and environmental factors for explaining variation of meadow snail communities

DVOŘÁKOVÁ, Jana a Michal HORSÁK. Predictive power of vegetation and environmental factors for explaining variation of meadow snail communities. In Molluscan Forum 2008, London. 2008.

Základní údaje

Originální název

Predictive power of vegetation and environmental factors for explaining variation of meadow snail communities

Název česky

Výpovědní hodnota vegetace a proměnných prostředí pro vysvětlení variability společenstev suchozemských plžů lučních stanovišť

Autoři

DVOŘÁKOVÁ, Jana a Michal HORSÁK

Vydání

Molluscan Forum 2008, London, 2008

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Další údaje

Typ výsledku

Konferenční abstrakt

Utajení

není předmětem státního či obchodního tajemství

Klíčová slova česky

plži; vegetace; louky; Ellenbergovy indikační hodnoty; Bílé Karpaty

Klíčová slova anglicky

snails; vegetation; meadows; Ellenberg indicator values; White Carpathians

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Anotace

V originále

A total of 22 sites were studied in dry and mesic meadows in the White Carpathians (Czech Republic). The sites were chosen along the gradients of soil calcium content and soil moisture. Vegetation, Ellenberg plant indicator values (for moisture and soil reaction), plant and moss cover, soil moisture, pH and calcium content were established for all sampling plots. The aim was to investigate the influence of these factors on snail species composition and richness. Principal component analysis showed that soil calcium and moisture explained the variation in snail communities the best. Moreover an interaction between these factors was found. Using Redundant analysis with Monte Carlo permutation test we found only two significant factors: (1) interaction between soil calcium and moisture, (2) Ellenberg moisture value, which highly correlated with numbers of alive snail species. Thus, the vegetation appears to be a very important predictor for explaining variation in snail communities.