The concept of vegetation classification of Russia as an image of contemporary tasks of phytocoenology

The scientific discussion concerning the development of the promising approaches for phyto-diversity conservation and the rational use of plant resources in Russian Federation was held at the Presidium of the Russian Academy of Sciences in December 2019. After the reports of leading scientists from biological institutes, a resolution No. 195 dated December 10, 2019 «Global changes in terrestrial ecosystems of Russia in the 21st century: challenges and opportunities» was adopted. The resolution includes a set of priority scientific aims including the development and application of modern technologies for inventory of the plant communities and the development of vegetation classification in Russia. As a result of the opinion exchange between phytocoenologists from different regions, the Concept of Russian Vegetation Classification was proposed. It is based on the following principles. 1. The use of the ecological-floristic approach and the hierarchy of the main syntaxonomic categories applied for the Classification of Vegetation of Europe. 2. Development of the Russian archive of geobotanical relevés and syntaxa in accordance with international standards and with the remote access functions. 3. Application of strict rules for syntaxon names formulated in the International Code of Phytosociological Nomenclature. The Concept assumes the development of a special program «Russian Vegetation Classification» with the justification of the necessity for targeted funding of the program in Research Institutions and Universities involved for solving this scientific problem on the principle of network collaboration. The final results of this program will be represented in the multi-volume publication «Vegetation of Russia». A shortened version of the Concept (English version was kindly revised by Dr. Andrew Gillison, Center for Biodiversity Management, Cairns, Queensand, Australia) is below. Vegetation classification of Russia Research Program Concept Systematic classification and inventory of plant communities (phytocoenoses) is fundamental to the study and forecasting of contemporary complex processes in the biosphere, controlled among other factors, by global climate change. Vegetation classification serves as a common language that enables professionals in various fields of science to communicate and interact with each other in the process of studying and formulating practical ecosystem-related management decisions. Because plant community types can carry a great deal of information about the environment, nearly all approaches to simulation of changes in global biota are based inevitably on vegetation categories. Phytocoenosis is a keystone element when assessing the biodiversity genetic potential, formulating decisions in biological resource management and in sustaining development across Russian territories. Among the world’s vegetation classification systems, phytosociology is a system in which the concept of plant association (basic syntaxon) is the basic element in the classification of phytocoenoses. The phytosociological approach as applied in this concept proposal, has its origins in the Brussels Botanical Congress in 1910. However, despite the broad acceptance of phytocoenotic diversity as a fundamental methodological tool for understanding biosphere processes and managing biological resources nowadays, we still lack a unified approach as to its systematization at both global and country levels with the consequence that, there is no a single classification system. The results obtained by vegetation scientists working under European Vegetation Survey led by L. Mucina became the effective reference for international cooperation in vegetation classification. In the last 17 years they have produced a system of vegetation classification of Europe, including the European part of Russia (Mucina et al., 2016. «Vegetation of Europe: hierarchical floristic classification system of vascular plant, bryophyte, lichen, and algal communities»). Despite the fact that «Vegetation of Europe» is based on ecological and floristic principles, it nevertheless represents an example of the synthesis of one of the most effective approaches to systematizing vegetation diversity by different vegetation science schools. The synthetic approach implemented in this study assumes full accounting of the ecological indicative significance of the floristic composition and structure of plant community and habitat attributes. The approach has already demonstrated its high efficiency for understanding and forecast modeling both natural and anthropogenic processes in the biosphere, as well as in assessment of the environmental and resource significance of vegetation (ref). The demand for this approach is supported by its implementation in a number of pan-European and national projects: NATURE 2000, CORINE, CarHAB, funded at the state and pan-European levels. Currently, one of the main systems for the study and protection of habitats within the framework of environmental programs of the European Union (Davies, Moss, 1999; Rodwell et al., 2002; Moss, 2008; Linking..., 2015; Evans et al., 2018) is EUNIS (European Nature Information System), the framework of which is a multilevel classification of habitats in Europe has been established. EUNIS was used as the basis for the preparation and establishment of the Red List of European Habitats (Rodwell et al., 2013). It is approved by the Commission of the European Union (EU) (Habitats Directive 92/43 / EEC, Commission of the European Communities) for use in environmental activities of EU countries. In its Resolution of 10.12.2019, the Presidium of the Russian Academy of Sciences (RAS) expressed the need in a modern vegetation classification for the assessment of the ecosystem transformations under current climate changes and increasing anthropogenic impacts, as well as in development of effective measures for the conservation and rational use of plant resources of Russia. The resolution recommended the development of the Concept of Vegetation Classification of Russia to the Science Council for biodiversity and biological resources (at RAS Department of biological sciences — Section of Botany). As a consequence, a group of Russian vegetation researchers has developed the Concept for Vegetation Classification of Russia and proposed principles and a plan for its implementation. Aim Elaboration of a system of vegetation classification of Russia reflecting the natural patterns of plant communities formation at different spatial and geographical levels and serving as the fundamental basis for predicting biosphere processes, science-based management of bioresources, conservation of biodiversity and, ultimately, rational nature management for planning sustainable development of its territories. Research goals 1. Development of fundamental principles for the classification of vegetation by synthesis of the achievements of Russian and world’s vegetation science. 2. Inventory of plant community diversity in Russia and their systematization at different hierarchical levels. Elaboration and publication of a Prodromus of vegetation of Russia (syntaxon checklist) with an assessment of the correctness of syntaxa, their Nomenclatural validization and bibliography. Preparation and publication of a book series «Vegetation of Russia» with the entire classification system and comprehensive description of all syntaxonomic units. 3. The study of bioclimatic patterns of the phytocoenotic diversity in Russia for predictive modeling of biosphere processes. Assessment of qualitative changes in plant cover under global climate change and increasing anthropogenic impact in its various forms. 4. Assessment of the conservation value of plant communities and ecosystems. Habitat classification within Russia on the basis of the vegetation classification with a reference to world experience. 5. Demonstration of the opportunities of the vegetation classification for the assessment of actual plant resources, their future prognoses under climate and resource use change, optimization of nature management, environmental engineering and planning of projects for sustainable development. Basic principles underlying the vegetation classification of Russia I. Here we address the synthesis of accumulated theoretical ideas about the patterns of vegetation diversity and the significant features of phytocoenoses. The main goal is to identify the most significant attributes of the plant cover at different hierarchical levels of classification: floristic, structural-phytocoenotic, ecotopic and geographical.We propose the following hierarchy of the main syntaxonomical categories used in the classification of European vegetation (Mucina et al., 2016) by the ecological-floristic approach (Braun-Blanquet): Type of vegetation, Class, Order, Alliance, Association. Applying the ecological-floristic approach to the vegetation classification of Russia will maximize the use of the indicative potential of the plant community species composition to help solve the complex tasks of modern ecology, notably plant resource management, biodiversity conservation, and the forecast of vegetation response to environmental change of environment changes. II. We plan to establish an all-Russian archive of geobotanical relevés in accordance with international standards and reference information system on the syntaxonomical diversity coupled with implemented remote access capabilities. At present, the archives in botanical, biological, environmental and geographical institutes of the Russian Academy of Sciences, as well as those of universities, have accumulated a large mass of geobotanical relevés for most regions of Russia (according to preliminary estimates — more than 300,000). These documents, which are fundamental to solving the most important national tasks for the conservation and monitoring of the natural human environment, need to be declared a