Ref ID : 1491
H. Klimowicz; Rotifers of astatic waters. Part II. Rotifers of small water bodies from the Mikolajki region. Polskie Archiwum Hydrobiologii (Pol.Arch.Hydrobiol.) 14(3):91-110, 1967
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Between April 20, 1956 and September 9, 1958 rotifers fauna was surveyed in 16 astatic water bodies in the region of Mikolajki, Mazury Lake District. Samples were taken from every pool once or twice a month. Sporadic observations were performed till 1963. The investigated water bodies may be divided into following two groups: 1. Better supplied with rotifers fauna, less muddy, lying in open spaces of fields and meadows ones, 2. With lesser developed rotifers fauna, and bottom covered by a thick layer of mud, leaves and twings, surrounded by trees and bushes. A luxurious macrophyte vegetation, lasting from spring till the end of August increases the amount of rotifer species. From the beginning of September to the time when the pool freezes, the number of species gradually diminishes. All inter-mittent water bodies are completely devoid of oxygen in late winter, which phenomenon is often accompanied by a total lack of rotifers. Only Rotatoria rotatoria is able to resist to a lack of oxygen for a very long time.