The role of biodiversity in ensuring the functioning of ecosystems. Message2. Small mammals in the ecological monitoring system: data obtaining, assessment of diversity, state and dynamics of ecosystems

Abstract

We consider the possibility of assay biodiversity and functional diversity of the ecosystem, as well as interpretation of the results obtained based on our work experience and previously obtained data. The prospects for studying of small mammals without removal from wild is discussed. We discuss distinguishing in a sample the resident component, which makes it possible to characterize local resource flows, and non-resident component, dependent on the state of the territory as a whole. A description of the capture-mark-recapture protocol, methods for assessing spatial activity, calculating density of resident population, and the completeness of species richness estimate is provided. The estimates of animal number per unit of trapping effort in pooled sample, the population density of residents, and the index of the non-residents flow are compared. The possibility of analysing of the resource flows in “historical”, “novel” and “hybrid” ecosystems, as well as using data to analyse the resilience of the ecosystem and detect the threshold point is considered.