Aspecte corologice ale speciilor de stejari (Quercus Robur, Q. Petraea, Q. Pubescens) pe teritoriul Republicii Moldova

Abstract

Environmental changes will in large part affect the growth and survival of forests in the future, especially in peripheral and transitional areas of ecosystems, such as forests in the Republic of Moldova (central mesophilic forests from North and the center of the country are at the South-East limit of its natural area). In the future, the distribution of oak populations in response to climate change will depend on the potential of species migrating, by spreading seeds to more favorable locations (eg.: to the North), natural selection with actions on a different genetic basis (in the case of large populations), and the flow of genes from other populations, which will favor rapid adaptation. However, many tree populations will be drastically tested in their adaptive potential, so human intervention will be needed. By climate aridization and its associated processes, the areas of the Quercus petraea and Q.robur, at the southern, south-eastern and eastern border of the species on the territory of the country, will be restricted, with the North-Eastern expansion of the current habitats of Quercus pubescens.