Novikova V. Spatial organization of soil mesofauna in the arena of the Dnipro River valley

Object of the the ground mesofauna of arena is Dnepr (within the limits of Dniprovsky-Orilsky National Reserve). The aim of work is to set connection between the ecomorphic structure of groupments of the ground mesofauna of biogeocenosiss of arena Dnepr within the limits of natural to reserve of Dniprovsky-Orilsky National Reserve and properties of soil and vegetable cover. Research methods. Statistical procedures of RLQ- of analysis are executed by means of package of ade4 for the shell of R. Meaningfulness of RLQ is appraised by means of procedure of randtest.rlq. Estimation of variety of the the ground mesofauna is conducted by means of library of DivEst. The results. The measurements reflect the major trends in the mesopedobiont community variability and can be explained by environmental factors, which are marked by phytoindicative scales and eco-morphic characteristics of the medium. It this set discriminant analysis has revealed that factors that differentiate the environmental conditions for different test areas are of complex nature. The key aspect of differentiation is sensitive to the level of nitrogenous nutrition of the edaphotope and to the humidity changes. The role of humidity as a factor of differentiation is closely interrelated with the conditions of mineral nutrition of edaphotope. Gradients of aeration and microclimatic features are also important. The evaluation of ecological conditions using phytoindication scales has revealed the importance of aeration and carbonate content of soils in the structuring of soil animal communities. Thus, ecomorphs of soil animals reflect the main aspects of the structural organization of their communities and may be used as informative and valuable indicators of properties and regimes of soil as the biota's habitat. Scientific novelty. The set conformities to law of the spatial varying of the ground properties are for investigational geobiocenosiss within the limits of catena. The ecomorphic analysis of vegetation of model biogeocenosiss is conducted within the limits of arena Dnepr. Specific composition is certain, indexes of quantity and ecomorphic structure of groupments of mesopedobiont within the limits of model geobiocenosiss of catena. Existence of intercommunication is set between the ecomorphic structure of the ground mesofauna, by properties of soil and vegetable cover at the level of geobiocenosis. The ponderable value of phytoindicative evaluation of ecological factors is shown for the system estimation of functional groups of the ground mesofauna. The appraised role of the ground properties and features of structure of vegetable cover is for spatial organization of the ground mesofauna, that consists in possibility of classification of mesopedobiont by the selection of functional groups in ecological space. Sampling methodology is improved for research of spatial changeability properties of groupments of the ground mesofauna at the level of geobiocenosis. Introduction degree. Job performances are development of direction of spatial ecology, that can in further be used for the analysis of information and forming of position about expediency and methods of guard of widespread geobiocenosiss in natural reserve of Dniprovsky-Orilsky National Reserve. Description of the ground descriptions, vegetable cover and functional groups of mesopedobiont of investigational territory used implementation of scientific theme of natural reserve of Dniprovsky-Orilsky National Reserve is "Chronicle of nature". The application field is environment protection.