acta societatis botanicorum poloniae - LV Zjazd Polskiego ...

55th Meeting of the Polish Botanical Society, Warsaw 2010
noted in the 1950’s were: Dracocephalum ruyschiana, Crepis
praemorsa, Iris sibirica, Gladiolus paluster, Platanthera chlorantha,
P. bifolia, Listera ovata, Cephalanthera rubra, as well
as abundant stands of Lilium martagon. Field studies conducted
during 2008 and 2009 showed that Potentillo albae-Quercetum
is still the dominant type of forest on the reserve area. On the
reserve there are also: Querco roboris-Pinetum and Fraxino-Alnetum.
In the south-western border of the reserve the interesting
xerothermic communities of the Festuco-Brometea were found.
One of the most interesting parts of forest in the 1950, had 5
rare, valuable species. Today this area is covered by young pine
forest; the rare species have been lost. Thus, the list of the most
valuable species of the reserve is much shorter, with the most
interesting Iris sibirica, and some other species, among them:
Peucedanum cervaria, Asperula tinctoria, Platanthera bifolia,
Epipactis latifolia. Lilium martagon is still abundant in the reserve.
Despite the loss of several species, the reserve still holds
great scientific value.
ASSESSMENT OF THE LEVEL OF THrEAT TO VAS-
CULAR fLoRA of tHE KNySZyńSKA foRESt
Łaska Grażyna. Białystok University of Technology, Department
of Environmental Protection and Management,
45A Wiejska St., 15-351 Białystok, Poland, g.laska@pb.edu.pl.
W/WBiIŚ/08/09
The aim of the study is to explore the current species composition
of the vascular flora found in the Knyszyńska Forest. The aim is
also to analyse the terms of classification of plant species enumerated
in the “Red List of Plants and Fungi in Poland” (Mirek
et al. 2006), the “Polish Red Book of Plants” (Kaźmierczakowa,
Zarzycki 2001) and in the Natura 2000 European Ecological
Network, as well as species under strict and partial protection
according to the Regulation issued by the Minister of Environment
on 9 July 2004 (Journal of Laws 2004, No. 168, item 1764).
The study shows that the Knyszyńska Forest has a total of 835
species of vascular plants. Of these vascular plants, 176 species
(21.1%) are legally protected, while 659 (78.9%) are not covered
by species protection. Out of the 176 legally protected vascular
flora species, 54 taxa (6.5%) are included in the “Red List of
Plants and Fungi”, 22 species (2.6%) are listed in the “Polish
Red Book of Plants”, while seven (0.8%) are protected under the
Natura 2000 European Ecological Network. Among vascular
plant species identified in the Knyszyńska Forest, a total of 93
taxa (11.1%) are under legal species protection, with 73 species
(8.7%) under strict protection and another 20 species (2.4%) under
partial protection. A total of 9.1% of vascular flora species
found in the Knyszyńska Forest are classified under a different
conservation status (Ex 0.12%; E and CR 1.8%; EN 0.96%; VU,
V, [V] 5.38%; LR 0.47%; R 0.36%), whereas 90.9% face no imminent
threat.
EASTErN PASqUEFLOWEr PulsAtillA PAtens (L.)
MILL. IN tHE KNySZyńSKA foRESt
Łaska Grażyna, Sienkiewicz Aneta. Białystok University of
Technology, Department of Environmental Protection and Management,
45A Wiejska St., 15-351 Białystok, Poland, g.laska@
pb.edu.pl. W/WBiIŚ/08/09
The aim of this study is to assess the level of threat in the
population of Pulsatilla patens (L.) Mill. in the Knyszyńska
Forest. The field research was conducted in the vegetative season
of 2009 in Supraśl forest inspectorate. The study included
the characteristics of demographic features. The study also
determined the allocation and spatial structure of the population,
the structure of development phases, and size structure
of individuals including height and habit. We found that in
Supraśl forest inspectorate, Eastern Pasqueflower occurs in 16
out of 32 previously documented positions. In the 16 positions,
46
165 individuals were found. The population is dominated by
individuals in the vegetative phase with the preserved ability
of generative reproduction. Most individuals are from 11 to
15 cm tall and the ground-level rosette reaches a size of up to
1cm. Pulsatilla patens (L.) Mill. occurs in a few localities in
Poland. In the “Red List of Plants and Fungi in Poland” (Mirek
et al. 2006) it is listed as a disappearing species; critically
threatened. In Podlaskie Province it was given an endangered
species status. Localities where its presence was recorded are
close to roads, and are not fenced or marked, with the result
that they are exposed to anthropogenic impact. In order to
protect it, it is recommended that screens be use while doing
forestry work. For protection it is also recommended that shadowing
by periodic forest stand lopping be prevented. Reducing
the competitive pressure from other species provides protection
as well..
LONG TErM – SPONTANEOUS CHANGES OF PINE
FOrEST leucobryo-Pinetum MAT. (1962) 1973 IN
THE rOZTOCZE NATIONAL PArK
Maciejewski Zbigniew. The Roztocze National Park, 2 Plażowa
St., 22-470 Zwierzyniec, Poland, zbigniewmaciejewski@wp.pl
The results of 35 years of research on the 0.5 ha permanent
study plot located in the planted pine forest of the Leucobryo-
Pinetum community, are presented. Spontaneous changes related
to secondary succession or regeneration towards Querco
roboris-Pinetum were observed as shown by the dynamics of
tree species. The abundance and share of pine clearly declined
throughout the entire study term while broadleaved species,
especially beech and oak, entered the tree-stand. The trend
is not as conspicuous in the herb layer: species typical of coniferous
forests dominate and the absence of taxa differential
of oak-pine forests, is observed. Despite the encroachment
of broadleaved tree species strongly shading the forest floor,
a relatively high increase in frequency was recorded for Trientalis
europaea L., Vaccinium myrtillus L., Vaccinium vitisidaea
L., There was a considerable decreased in frequency for
Luzula pilosa (L.) Willd., Melampyrum pratense L., Festuca
ovina L., Calluna vulgaris (L.) Hull. Distinct habitat condition
changes, often noticed in pine forests in other regions of
Poland, were not observed.
THE STrUCTUrE OF BEECH FOrEST STANdS IN
tHE SoKoLE GóRy NAtURE RESERvE
Majchrzak Barbara. Jan Długosz Academy in Częstochowa,
Departament of Ecology and Environmental Protection,
13/15 Armii Krajowej St., 42-200 Częstochowa, Poland,
b.majchrzak@ajd.czest.pl
On every hill 3– 5 research plots were established. Research
was also performed in selected gaps situated in tree stands outside
the borders of the established plots. For each research plot
a floristic-phytosociological survey was made. Breast height
of trees was measured. In order to present the differences in
the number of juvenile beech specimens between the research
plots and the gaps, 4 m² squares were randomly placed in each
plot and gap. In every square the number of beech specimens
was counted. The hills in the reserve are characterized by
significant floristic values, which is proved by a significant
share of protected species. These are species typical for the
so called, old leafy forests and well preserved phytocoenoses
of Dentario enneaphyllidis-Fagetum and Carici-Fagetum
convallarietosum. The distribution of breast height of the researched
tree stands is in some cases in the form of a one top
curve with a flattening on the right, which reflects the structure
of natural forests. More favourable habitat conditions for the
beech are found on the slopes of hills with southern exposure.
The favourable habitat conditions are confirmed by the greater