acta societatis botanicorum poloniae - LV Zjazd Polskiego ...

has a primary character. Its special natural values – specific
structure and the presence of endemic and relict species – are
well preserved. An analysis of the differentiation of the specific
structure was carried out on the basis of 170 relevés, which were
performed using the Braun-Blanquet method, the topography
and the results of soil investigations. The analysis made possible
the recognition of six different phytocoenosis characterized by
the participation of characteristic species from these classes:
Betulo-Adenostyletea, Vaccinio-Piceetea, Querco-Fagetea. It
was ascertained that the differentiation of the species composition
is connected with environmental conditions such as topography
and the stratigraphy of the phytocoenose. The greatest
species richness and the greatest participation of endemic species
was detected in places with a mosaic of microhabitats and
a weak covorage of the shrub layer. Such places remain under
the influence of natural factors, making it impossible to form
a typical type of community.
CONTEMPOrArY THrEATS ANd CONSErVATION
OF THE TEMPErATE rAINFOrEST IN AMErICA
doroszewicz Wojciech. University of Warsaw, Center for Latin
American Studies, 14 Smyczkowa St., 02-678 Warsaw, Poland,
w.doroszewicz@uw.edu.pl
In my research I analyze the phenomena of the contemporary
threat posed by human activities on the temperate rainforest.
I study the problem of geographically isolated ecosystems heavily
dependent on climatic conditions. I compare the risks and
ongoing programs for the conservation of the these forests on
the American continents. The study has to include: Chile and
Argentina (Valdivian rainforests and associated communities),
western Canada and the U.S. (west coast coniferous forests), and
southern Brazil (forests of Brazilian araucaria). Anthropogenic
threats are very similar for all these communities irrespective
of the degree of economic development of the country in which
they occur. Contemporary climate change can greatly increase
the risk. The main consequence of intensive human activities in
these areas is significant habitat fragmentation. Existing threats
can lead to irreversible changes. These would be changes in ecosystems,
or whole regions, and even their total reconstruction
– despite the ongoing conservation programs.
MOrPHOLOGICAL dIFFErENTIATION OF Anthox-
Anthum odorAtum ANd A. AlPinum POPULAtIoNS
oN BABIA GóRA MoUNtAIN
drapikowska Maria 1 , Szkudlarz Piotr 2 , Celka Zbigniew 2 ,
Kucharczyk Izabela, Jackowiak Bogdan 2 . 1 University of
Life Sciences in Poznań, Department of Ecology and Environmental
Protection, 94 Piątkowska St., 61-691 Poznań, Poland,
mariadra@up.poznan.pl; 2 Adam Mickiewicz University, Department
of Plant Taxonomy, 89 Umultowska St., 61-614, Poznań,
Poland
Anthoxanthum odoratum, a species occurring below the upper
forest limit on Babia Góra mountain, is replaced by A. alpinum
in the subalpine and alpine zone. It is a typical example of altitudinal
vicarism. The aim of the study was to determine the range
of morphological variability within the populations of A. odoratum
and A. alpinum occurring along an altitudinal transect. Special
attention was paid to populations situated in the transition
zone between both species. Plant material was collected from
11 populations. Twenty-four morphological traits were examined.
The obtained results were analyzed with the use of multidimensional
statistical methods. It was found that A. alpinum
grows above the upper forest limits. Populations of this species
have a relatively small range of variability of the studied traits.
The traits characterized by the lowest variability include: length
of the upper glume, and width of the lower glume. Populations
occurring in the contact zone of A. odoratum and A. alpinum,
Geobotany and Plant Cover Conservation
situated at the altitude of ca. 1166 m a.s.l., consist of individuals
representing both species. In turn, populations situated below
the upper forest limits are represented by only A. odoratum and
reveal considerable morphological differentiation.
ASSESSMENT OF PLANT COVEr ON THE CHOSEN
MUNICIPAL dUMPING SITES IN THE MAZOVIA
PrOVINCE
Dyguś Kazimierz H. University of Ecology and Management,
Faculty of Ecology, 14 Wawelska St., 02-061 Warsaw, Poland,
dygus@wseiz.pl
Municipal dumping sites in Mazovia province were chosen as
an example to present the state of spontaneously developed plant
cover. About 200 species of vascular plants representing over
20 families were recognized. Asteraceae, Poaceae and Fabaceae
are among the families comprising most species. In the analyzed
flora the dominating plants are apophyties – 65% including
meadow apophyties – 50%. Among the living forms (acc.
to Raunkiaer) the most were hemicryptophytes and terophytes
(about 35% each). In relation to life strategy (acc. to Grime) species
with high competing abilities (C strategy) and those preferring
disorders (R strategy) dominate. Out of syntaxonomic
groups (acc. to Matuszkiewicz) the highest share is taken by
the classes Artemisietea vulgaris, Molinio-Arrhenatheretea and
Stellarietea mediae. Succession trends were observed on the investigated
surfaces which referred to such plant communities as:
Atriplicetum nitentis, Chenopodio rubri-Atriplicetum patulae,
Lamio albi-Conietum maculati, Echio-Melilotetum, Leonurio-
Balloteum nigrae, Convolvulo arvensis-Agropyretum repentis,
with Kochia scoparia and others. The assessed primary production
of plant over-ground parts in the municipal dumping sites
amounted on the average to about 6500 g d.m.·10m -2 .
THE SIZE OF TUSSOCKS OF cArex cesPitosA ANd
SPECIES OCCUrrING IN THEM
dzido Alicja1 , Borkowska Lidia2 . University of Podlasie,
12B Prusa St., 08-110 Siedlce, Poland, 1Doctoral Studies, Discipline
Agronomy, alicja.dzido@gmail.com; 2Institute of Biology,
Department of Botany, lidiabor@ap.siedlce.pl
The study was conducted at the unmowned meadow at Uroczysko
Reski (15 ha) in the Białowieża National Park, which is located
northwest of the Bialowieża Clearing. Observations were
carried out to answer the question: has the size and height of the
tussock core any impact on the number of species and shoots
occurring in the tussock? In order to achieve that: – a list of the
number of species and shoots of vascular plants growing on particular
tussock was made, – the size of the base of every tussock
was measured. On 218 tussocks there were reported 6089 shoots
representing 27 species of vascular plants. Lythrum salicaria,
Equisetum palustre and Angelica sylvestris were the species
most common in the tussocks.
IMPACT OF WEATHEr ON VEGETATION dYNAMICS
IN A LIMESTONE GrASSLANd
dzwonko Zbigniew, Loster Stefania. Jagellonian University,
Institute of Botany, 46 Lubicz St., 31-512 Cracow, Poland,
ubdzwonk@cyf-kr.edu.pl
Vegetation data collected over 12 years from permanent plots
in a semi-natural grassland in southern Poland were used. Relations
between weather variables, time, and the cover of 41 more
frequent species and 14 plant functional groups were analysed
using multiple linear regression. The climatic data included
mean temperatures and precipitation sums for each month from
37