Spis treści

Natural regeneration versus tree planting in the subalpine spruce forest Plagiothecio-Piceetum tatricum of the Gorce National Park (southern Poland)

Dynamics of tree stands in the Gorce National Park (southern Poland) during the period 1992-1997

Tree-ring estimation of the effect of industrial pollution on pine and fir in the Ojców National Park (Poland)

Endangered and threatened vascular plants of the forests of central Poland and the problems of their conservation

Endangered and threatened vascular plants in the Proszowice Plateau (Małopolska Upland, Poland)

Meadows of the "Granica" complex in the Kampinos National Park: geobotanical characteristics and protection proposals (Poland)

Breeding bird communities in relation to different habitat islands

Changes in the numbers and occurrence of Bombini (Apoidea) in the Pieniny National Park and its buffer zone (Poland)

Chemical contents of waters at the Babia Góra Mountain (Poland)