Ministry of natural resources of the Russian federation

       Polistovsky National Nature Reserve

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Fauna of bogs





The fauna of aquatic invertebrates of raised bogs of Polistovsky Reserve has a number of specific traits, and the species composition of organisms is closely dependent on the type of wetland complex, i.e., associated with the composition of bog waters, the volume of water masses and the nature of vegetation. In the marginal zone of the wetland massif of the Polistovsky Reserve the aquatic fauna is most diverse. This is a place for mass development of Rotifers, Crustaceans are mainly represented by species of thicket fauna, among macroinvertebrates one can observe larvae of Dragonflies, Caddisflies and Dipterans.
         In the transitional and central zones of the wetland massif of Polistovsky Reserve zooplankton is represented by sphagnofilic species of Rotifers and Crustaceans; among macroinvertebrates one can find larvae of Dragonflies, Midges (mainly carnivorous types); also researchers noted different types of water beetles able to fly between marshy ponds. 
        Among amphibians in bogs of Polistovsky Reserve one can observe Brown and Moor Frogs; reptiles are numerously represented by Common Viper and Common Lizard. 
        The birds found in bogs of Polistovsky Reserve are members of three groups: regular-breeding birds, accident-breeding birds and birds using bogs for feeding or stop-overs. 
        Out of birds regularly nesting in bog, one can point out only 4 species - grouse, Golden Plover, Curlew and Medium Grey Shrike; they are nesting exclusively in raised bogs. Four other species may also be marked on transitional and lowland types of bogs of Polistovsky Reserve. They are Crane, Greenshank, Wood Sandpiper and Pipit. The following subgroup of birds regularly nesting on raised bogs includes species typical for open landscapes in general. We have found seven types of birds: Lapwing, Curlew large, Field Larks, Yellow and White Wagtails, Whinchat and Black-tailed Godwit. Most of birds regularly nesting on bogs are associated with trees, mostly with pine forests and wetland complexes with suppressed pine. This subgroup includes Black Grouse, Merlin, Golden Eagle, Nighthawk, Black Swift, Hoodie, Tree Pipit, Shrike-backed Shrike and Willow Warbler. 
        The group of birds irregularly nesting on bogs includes Fiddler, Jack-Snipe, Snipe, Short-eared Owl, Wood Grouse, Hobby, Merlin, Green Sandpiper, Screech Owl, Oriole, Starling, Large and Crested Tit, Willow Tit and Spink, Whooper, White-fronted and Gray Goose, Common Merganser. 
        Among birds feeding at bogs of Polistovsky Reserve in the breeding time one can note: Marsh Harrier and Montagu's Harrier, Herring Gull, Great Spotted Woodpecker, and Barn Swallow. At the time of flights one can observe 5 species of birds: Great Crested Grebe, Whooper, White-fronted Goose, and Gray Goose, and Common Merganser. During the winter season on raised bogs one can see grouse, Hazel Grouse, great Spotted and Gray Woodpeckers, Jay, Blue Tit, Great and Crested Tit, Willow Tit and Redpoll.
        Among large mammals in the bogs of Polistovsky Reserve one can regularly meet Elk, Boar, and Bear crossing swampy tracts in search of food. 





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