Oak decline in the Soviet Union - Scale and hypotheses


Author's address: Dr. J. OLEKSYN and Dr. K. PRZYBYL, Institute of Dendrology, Polish Academy of Sciences, ul. Parkowa 5, PL-62-035 Kórnik, Poland


On the basis of extensive literature the decline in oak woods over the last several decades in the Soviet Union is discussed. The decline has affected a major part of the range of oak in European USSR. A detailed review is given of the suggested hypotheses explaining the decline.