JPG File 356K
Figure 13.4
Vegetation maps of southern portion of Damchik section of Astrakhanskiy Biosphere Reserve in 1977 and 1992. Key to vegetation types: E3, Willow forests (Salix alba and S. triandra ) with layer of common reed (Phragmites australis), reedmace (Typha angustifolia), forb, and grass; E4, open forests of S. alba with layer of sedge, forb, and grass; E17, reed meadows; A1, dense stand of reedmace with small amounts of reed, A2, dense stand of reed and reedmace; A3, nearly closed stands of reed and reedmace with floating and submerged vegetation (Salvinia natans, Ceratophyllum demersum, Lemna minor, Spirodela polirhiza); A4, open stands of reedmace and reed with floating and submerged vegetation; A5, mosaic of isolated and aggregated clones of reed and reedmace with floating and submerged vegetation (Nymphaea candida, Nymphoides peltata, Ceratophyllum demersum); A6, mosaic of isolated and aggregated clones of reed, reedmace, bur-reed (Sparganium erectum), and lotus (Nelumbo nucifera) with floating and submerged vegetation (Nymphoides peltata; Salvinia natans, Nymphaea candida, Ceratophyllum demersum, Trapa natans, Lemna minor, Netellopsis obtusa); A7, mosaic of isolated clones and fringe-like stands of reedmace with a small part reed with floating and submerged vegetation (Ceratophyllum demersum, Trapa natans, Salvinia natans, Nymphoides peltata); A8, isolated clones of reed and reedmace reed with floating and submerged vegetation; A9, isolated clones of reed and reedmace reed with rare patches of lotus; A10, isolated large clones of reed; A11, closed monospecific fields of lotus; A12, more open fields of lotus with bur-reed and isolated clones of reed and reedmace; A13, fields of floating and submerged vegetation (Trapa natans, Nymphaea candida, Nuphar lutea, Nymphoides peltata, Ceratophyllum demersum, Potamogeton pectinatus, Netellopsis obtusa) with rare clones of reed, reedmace, lotus and bur-reed; A16, fields of submerged vegetation (Ceratophyllum demersum, Potamogeton pectinatus) with rare patches of floating vegetation and sparse clones of reed; A17, continuous fields of submerged vegetation with some floating vegetation (Ceratophyllum demersum, Potamogeton pectinatus, Trapa natans, Nymphaea candida), bur-reed and sparse clones of reed; A18, open water fields of submerged vegetation close to the bottom.
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