Netsvetov M. Effects of vibration processes as an ecological factor on structural- functional forests biogeocenosis organization.

The objects are interaction of wind and trees, vibrations of parts of trees and soil in forest biogeocenosis and forest cultural biogeocenosis. The aim is to determine the influence of oscillation processes on structural-functional organization of forest natural biogeocenosis and cultural biogeocenosis in the steppe zone of Ukraine. The methods are biogeocenological, ecological, rout-field, dendrometric, anatomical, morphometric, biomechanical, ethological, statistical. During the investigation we tried to elucidate the vibrations as an ecological factor, and it was shown that the woody plants are transmitters of the wind kinetic energy particalrly in form of vibrations. One passes to the soil and litter bogeocenotic horizons through the stems and roots. Under the windy conditions trees produce a vibrational noise from ultra-low to sound range frequencies. The stem oscillation frequencies change from relatively high to low along the landscape profile from a watershed to a valley-line. The experimental and in situ actinometrical and soil physical features investigations results suggest the trees vibration take part of forestation effect of the forest biogeocenosis in the steppe zone. The role of vibrations consists in (1) induction or acceleration of vertical transition of colloids with no change in their chemical composition; (2) clay particles separation and (3) clefts forming and pores' volume changing; (4) increasing of water flow speed through soil. Wind induced leaves and branches oscillations cause light passing through crown into lowest biogeocenosis strata. The biomechanics of plant defines a degree of the effect. We established that the wind acclimation of trees consists in (1) stem tapering, (2) changing of shallow root growth orientation and mean diameter at the base, (3) leaves anatomical and morphological reorganization. The trend of leaves adaptations relate to ecological and biological traits of the species. We also showed birds Pica pica L. choice of the nesting height at trees causes the amplitude, frequency of nests oscillations and so its acceleration. Stems swaying effects on nests microclimate and sets cooling-down rate. Transport traffic supplements the vibrational noise with technical ones in the anthropogenic transformed landscapes. Technical vibrations of the ground cause hipperaccumulation of the heavy metals ions on the plats tissue. Application sphere are green building, educational process.