Open AccessPatterns in grassland vegetation of Bredinskiy state natural wildlife preserve
Author(s) -
Nazar Nikolayevich Nazarenko,
Yevgeny Dmitrievich Perlov
Publication year - 2018
Publication title -
samarskij naučnyj vestnik
Language(s) - English
Resource type - Journals
eISSN - 2782-3016
pISSN - 2309-4370
DOI - 10.17816/snv201874115
Subject(s) - grassland , steppe , ecology , environmental science , abiotic component , vegetation (pathology) , grassland degradation , geography , wildlife , biology , medicine , pathology
The patterns (mosaicity) in grassland vegetation of Southern Ural for Bredinskiy state natural wildlife preserve example have been characterized by a hierarchical continuum concept theory. The multispecies patterns identification has been done by blocks and principal components methods and hierarchical patterns evaluation by multivariate statistics (Cluster, Discriminant Analysis and Non-Metric Multidimensional Scaling) and biotopes phytoindication. It has been established that there are two patterns levels parcels (6,0 m) and coenotics (11,0 m) in grassland vegetation. Thus, hierarchical continuum in steppe grassland vegetation of Southern Ural has been confirmed by multivariate statistics. Detected patterns have been classified and its phytochorologic unit has been identified. For patterns informative and dominant species have been also detected. It has been demonstrated that species dominance and its significance in patterns depend upon mosaicity levels. Some non-uniformly scaled ecological factors have been identified for patterns continuum. The principal significance for steppe grassland parcels matter coenotic and phytodiversity factors, for coenotics patterns forming matter abiotic factors too. For Bredinskiy state natural wildlife preserve principal abiotic factors steppe grassland patterns forming are (by decrease) soil calcium regime, soil nitrogen regime, soil acidity, soil mineralization and aeration.