State of the Juniperus oblonga bieb. Population depending on the spread semiparasite arceuthobium oxycedri (DC.) bieb. and joint growth with Pinus kochiana Klotzsch under the conditions of Innermountain Dagestan

The reasons of deterioration the state of Juniperus communis subsp. oblonga population on the degraded slope ridge in Chakulabeck at Intermountain Dagestan in connection with the mass spread of semiparasite Arceuthobium polyparasitic oxicedri and the introduction into the community the new dominant species Pinus кochiana were dicussed. It is shown that A. oxicedri is not the primary reason of degradation of J. communis subsp. oblonga population. It was suggested that communities with dominance of J. communis subsp. oblonga on the Northern slopes of mountains in arid conditions of Intermountain Dagestan was formed after the felling of the pine forest and is currently replaced by secondary pine forests.