ExOS: Excel package for the analysis of ontogenetic spectra of plant populations
L. A. Zhivotovsky
Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia
Keywords: plant development periods, age state, ontogenetic spectrum, population-ontogenetic indices, similarity index, classification, cenopopulation
Abstract
According to the scheme of age periodization of plant ontogenesis proposed by T. A. Rabotnov and A. A. Uranov, about a dozen of main age (ontogenetic) states are distinguished. Each population sample represents an ordered series of frequencies of occurrence of plants at these states - the so-called ontogenetic spectrum (OS). Various OS statistics are available according to the form of the OS, reflecting a greater or lesser representation of young, mature or old plants in the population and allowing to represent the temporal dynamics of the population. The Excel Ontogenetic Spectrum (ExOS) package presented allows their automatic computation and analysis. The input data are the numbers or frequencies of ontogenetic states in the sample. Output data: classifications of OS and cenopopulation types according to various criteria, population-ontogenetic indices; for multiple population samples - similarity (distances) between them and their ordination on "delta-omega" axes; the corresponding diagrams are captured authomatically.
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