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Changes in physiological features of undergrowth indicator species of old forest
The study concerns the study of selected physiological features of three indicator species of the undergrowth of the oak-hornbeam forest (Anemone nemorosa L., Galeobdolon luteum Huds. emend. Holub and Stellaria holostea L.), after the forest canopy closure. Las Wolski, an isolated forest complex located within the city of Cracow (Southern Poland), was selected for the study. The plant material was collected at two points in the season – right after the forest canopy closure and a month later. Under laboratory conditions, the physiological characteristics of the indicator species were analysed. Light stress may play a smaller role here, and physiological parameters are probably most affected by the phenology of undergrowth species, which is adapted to seasonal changes in habitat conditions. However, these issues require more research.