Sigma-syntaxa of the Wrangel Island

Research on Wrangel Island's vegetation reveals the identification of 53 sigma-syntaxa, including 13 sigma-associations and 40 sigma-types, using a symphytosociological approach. This method, adapted from European phytosociologists, classifies territorial units of vegetation based on diagnostic groups and constant syntaxa. The study employs landscape ecological methods and profiles to identify phytocoenochoras, which are then processed into tabular data to determine sigma-syntaxa. Key findings include the application of a threshold for identifying sigma-associations and the combination of typological categories into higher hierarchical ranks like sigma-unions. The research also introduces an algorithm for recording sigma-syntaxa, covering composition, structure, environment, and location, providing a comprehensive framework for understanding vegetation diversity on Wrangel Island.

Kholod, S. S. (2016). Sigma-syntaxa of the Wrangel Island. Vegetation of Russia, (29), 89–116. https://doi.org/10.31111/vegrus/2016.29.89