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EN
Results of geobotanical investigation of the Przycmieri forest range in the Kampinos National Park are presented. Studies took place during 1990 and 1991. The phytosociological differentiation of the forest communities was analyzed. The following associations were distinguished: Ribo nigri-Alnetum, Circaeo-Alnelum, Tilio- Carpinetum, Querco rohoris-Pinetum. The location of distinguished communities was shown on real vegetation map. Some rare and protected species were found. There are: Ophioglossum vulgatum, Lycopodium clavatum, Polypodium vulgare, Ribes nigrum, Ribes spicatum, Scorzonera humilis and Epipactis helleborine. Key words: forest communities, Kampinos National Park, nature reserve, protected species, vegetation map.
PL
Wydano przy pomocy finansowej Uniwersytetu Łódzkiego oraz Komitetu Badań Naukowych
EN
The paper presents a preliminary list of rare and threatened segetal plants species in the Kampinos National Park. The list is based on floristical investigations which took place during 1994 and 1995. The following rare and threatened species were found: Agrostemma githago, Centaurea cyanus, Consolida regalu, Digitaria sanguinalis, Fumaria officinalis, Herniaria glabra, Holosteum umbellatum, Logfia arvensis, Papaver dubium, Papaver rhoeas, Sinapis arvensis.
EN
The secondary succession pattern observed on an arable field abandoned since 1974 in Tilio-Carpinetum habitat is described and disscussed. Results obtained during 36 years of study confirm that succession on an abandoned field leads from a typical segetal community to the formation of a juvenile treestand composed of pioneer species. Our study supports the view that succession is a process which is largely dependent on the initial conditions and surrounding vegetation. The results indicate that some species can modify the course of this process, accelerating or slowing it down. Limitations of the method and prognosis of future vegetation development are also discussed.
EN
The objective of this paper is to present the effects of general changes in land use in recent decades on plant cover structure in Poland. The paper is focused on spontaneous processes that occur in agricultural and forest areas being no longer under human pressure. Studies carried out in different geobotanical regions of Poland demonstrated that the directions and range of dynamic changes in plant cover are similar across the country. The formation of secondary forest phytocenoses, on the lands delivered from human activity is a common ecological process observed today in the agricultural landscape. In the dynamics of forest vegetation the basic process is regeneration after ceased use, and the introduction of legal protection.
EN
The paper presents the results of investigations on synanthropic flora, carried out in 1996 and 1997; it contains a floristic list of 268 plant species found growing in the Municipal Botanical Garden in Łódź. The synanthropic flora of this area is rich and highly diverse mainly due to the variability of ecosystems.
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