Aquatic and helophyte vegetation of the Donty Lake (The Komi Republic)

The results of a syntaxonomical study of plant communities of the large lake Donty (North-East of the European part of Russia) are presented. The diversity of hydrophytic vegetation has been classified into 3 classes (Lemnetea, Potametea and Phragmito-Magnocaricetea), 5 orders, 8 alliances, 20 associations and 1 community. Subasso­ciation Scolochloetum festucaceae caricetosum aquatilis is new. Communities of associations Caricetum aquatilis, Equisetetum fluviatilis, Potamo—Nupharetum luteae, Potametum perfo­liati are mostly wide distributed, while these of Phragmitetum communis, Scolochloetum festucaceae ones are relatively rare as well as Lemno—Spirodeletum polyrchizae, Elodeo—Potametum alpini, Potamo—Nupharetum pumilae, Potametum praelongi and Scirpetum lacustris are very rare. Some communities contain 2 regional rare species: Scolochloa festucacea and Ranunculus lingua.

Native Uses of Wetlands and Natural Resources Planning: The Swinomish Indian Tribal Community's Wetlands Cultural Assessment

Wetlands are defined based upon the presence of three essential characteristics: hydrophytic vegetation; hydric soils; and wetland hydrology. Wetland inventory and wetland habitat assessments are conducted in areas where wetlands need to be identified and ranked for regulatory protection measures. Typically the following methods are used: 1) identify wetlands through existing resources and produce a preliminary wetland inventory, 2) field verify wetlands, 3) assess wetland functions and values, and 4) develop watershed ranking. In order to evaluate and assess the relative importance or level to which a wetland performs a specific function, a functional assessment of the field-verified wetlands is conducted. Detailed scientific knowledge of wetland functions, sometimes known as functions and values, is often limited, so that evaluations of the functions of individual wetlands are qualitative and largely dependent upon professional judgment. Wetland functional valuations are still an evolving science. Therefore, better methods for valuations are being researched but until such methods are in general use by the scientific research community, the current and possibly inaccurate methods are in use.

Syntaxonomy of macrophytic vegetation of the Syndor Lake (Komi Republik)

Results of a syntaxonomical study of the plant com­munities of the large lake Syndor (North-East of the European part of Russia) are presented. The diversity of hydrophytic vegetation has been classified into 2 classes (Potametea and Phragmito-Magnocaricetea), 3 orders (Potametalia, Phragmitetalia, Magnocaricetalia), 4 alliances, 11 associations, 7 variants and 2 communities. Association Nupharetum spenne­rianae is new. Floristic peculiarities of the lake Syndor macrophytic communities are shown. They differ from the similar communities in other regions of Russia by the absence of pleustophytic species.