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.

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

Anotace

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.