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We used an OTC (open top chamber) system to study the effects of elevated CO2 concentration (atmospheric CO2 concentration + 200 #x03BC;mol·mol-1) on the growth and photosynthetic physiology of Hylotelephium erythrostictum. Elevated CO2 concentration decreased the leaf stomatal density of the upper
The reciprocal relationship between diurnal changes in organic acid and storage carbohydrate was examined in the leaves of three Crassulacean acid metabolism plants. It was found that depletion of leaf hexoses at night was sufficient to account quantitatively for increase in malate in Ananas comosus
Parnassius apollo (Lepidoptera, Papilionidae) declines on numerous localities all over Europe. Its local subspecies frankenbergeri, inhabiting the Pieniny Mts (southern Poland) and successfully recovered from extinction, is monophagous in larval stage. In natural conditions, it completes development