Zmiany poziomu wody w eemskich jeziorach i torfowiskach północnego Podlasia
Abstract
Water level changes in the Eemian lakes and peat-bogs in the north Podlasie.
S u m m a r y. Results of pollen analysis of mire-lacustrine sediments from 25 sites in north Podlasie (NE Poland) were used for reconstruction of water level changes in Eemian lakes and peat-bogs of this region. In the older part of the interglacial (from E1 R PAZ to mid-E5 R PAZ), water level rose gradually. Its drastic decrease was noted in the younger half of the hornbeam zone (E5 R PAZ). Among possible causes of this phenomenon may be the increase of climate continentalism, decrease of rivers erosion base or the disappearance of permafrost. Low water level in the north Podlasie lakes persisted during the whole hornbeam phase (E6 R PAZ), until the beginning of the pine phase (E7 R PAZ). Then distinct increase of water level occurred, and the high water level persisted till the end of the interglacial.
S u m m a r y. Results of pollen analysis of mire-lacustrine sediments from 25 sites in north Podlasie (NE Poland) were used for reconstruction of water level changes in Eemian lakes and peat-bogs of this region. In the older part of the interglacial (from E1 R PAZ to mid-E5 R PAZ), water level rose gradually. Its drastic decrease was noted in the younger half of the hornbeam zone (E5 R PAZ). Among possible causes of this phenomenon may be the increase of climate continentalism, decrease of rivers erosion base or the disappearance of permafrost. Low water level in the north Podlasie lakes persisted during the whole hornbeam phase (E6 R PAZ), until the beginning of the pine phase (E7 R PAZ). Then distinct increase of water level occurred, and the high water level persisted till the end of the interglacial.