Intraspecific Variability of Quercus pubescens Willd. Leaves from the Outstanding Natural Landscape “Kosmaj” in Serbia

The pubescent oak ( Quercus pubescens Willd.) leaves were analysed by the means of morphometric methods in the Outstanding Natural Landscape “Kosmaj” in Serbia. The main goals were to determine the level of intraspecific variability of pubescent oak leaves and to link it to local habitat conditions. Morphological analysis of size and shape (MASS) and landmark analyses were used for the investigation of the leaves, and observed differences were correlated to habitat conditions (altitude, slope, aspect) obtained by the digital terrain model. This study showed a clear pattern of intraspecific variability of leaf size and shape at a small spatial scale, and the presence of fluctuating asymmetry, length, and lobation differences as a response to local habitat conditions. The findings suggest that morphological variability can represent a useful tool for detecting changes in the environment, especially in areas where the pubescent oak is considered endangered.