17PTAKI LAK I MOKRADEL POLSKI.pdf

Summary
Table 12.1.
The characteristic of investigated areas in the years 1994 and 1995
Study area Area (ha) Degree of moistness
Old river-beds and
small water pools
Reedbeds,
cattail-beds,
manna-grass fens
Sedge fens Osier-beds Woodlands
Odra Valley 650 small fluctuations of
water level
Warta Valley 600 yearly, partly floods of
the area until half of
May
Barycz Valley 700 extensive floods until
beginning of April
2smallwater
reservoirs
Nida Valley 845 yearly, extensive floods numerous, elongated
and deep
few small percentage few, near water
reservoirs
numerous vast absent along river and
channels
absent vast small few few
single trees
vast vast small alder woods single
Pilica Valley 905 small floods numerous along old river-beds narrow belt ca. 7% and along river alder-ash forests
Wieprz Valley 620 yearly floods,
extensive until
beginning of May
numerous, elongated
and deep
Liwiec Valley 710 intense drainage absent, overgrown
peat excavations
fairly numerous vast vast, along river single trees
few absent along drainage ditch small percentage of
alder-ash forests
Narew Valley 710 yearly and extensive numerous vast vast numerous platy small woodlands
Nietlickie Marshes 1000 extensive floods numerous vast vast vast birch and alder woods
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