Phyto-Indicator of Variation in Environmental Conditions
2021
Zhivotovskiĭ, L. A. (Lev Anatolʹevich) | Osmanova, G. O.
A new index, phyto-indicator of variation of environment (PHIVE), is introduced based on the normalized lengths of the intersection of the amplitudes (intervals) of an ecological scale of all plant species that grow in a given habitat. It reflects the diversity of niches colonized by plants at the given point in time. The index can be applied to each scale separately or can represent averaged data for a number of scales. The method is suitable for various habitats (from relatively homogeneous to extremely heterogeneous ones), which is demonstrated through the example of the ecological scales developed by D.N. Tsyganov. It is shown that there is no causal relationship between the PHIVE value and the number of species in the site, i.e. they evaluate different features of diversity. The PHIVE can be used to assess changes in plant habitats on par with other parameters of the population structure.
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