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Wyświetlanie 1-2 z 2
Tytuł:
Species diversity of segetal plant communities in the Early Neolithic settlement area of the Sleza Landscape Park
Autorzy:
Aniol-Kwiatkowska, J
Kacki, Z.
Powiązania:
https://bibliotekanauki.pl/articles/58872.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
species diversity
segetal plant
plant community
Early Neolithic
settlement area
Slezanski Landscape Park
flora
weed
endangered species
Opis:
The paper contains results of investigations carried out in crop fields within the protected area, which is an important refuge of species diversity in grounds dominated by large-area farms. The segetal vegetation is represented by 13 plant communities, the development of which is influenced by various tillage manipulations. As a result, the segetal flora of the Ślęża Landscape Park is heavily threatened and the structure and species richness of phytocoenoses are distinctly transformed. This is reflected in the frequency of weed occurrence in crops (i.e. there is a small group of common species and a very numerous group of species with 1 or 2 localities), as well as in values of biocoenotic indicators, e.g. the values of diversity indicator H vary between 1 and 3.5. An analysis of archaeophytes participation (frequency and numbers) in ATPOL squares indicates their significant connection with archaeological sites of the Neolithic settlement. Particular adherence to the early Neolithic settlement areas shows a group of species from the Caucalidion alliance. The richness and diversity of the Park vegetation, conditioned by many hundreds of years of agriculture, are now strongly transformed and have become impoverished. Establishing the Landscape Park, in order to preserve the natural-landscape character of the environment and its cultural and historical values, does not ensure the protection of both the species and the phytocoenotic diversity of this area.
Źródło:
Acta Societatis Botanicorum Poloniae; 2006, 75, 3; 257-262
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
How a river course influences the species richness and ecological requirements on two opposite riverbanks in a forest area
Autorzy:
Czarnecka, B.
Rysiak, A.
Chabudzinski, L.
Powiązania:
https://bibliotekanauki.pl/articles/58686.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
river course
species richness
species diversity
riparian landscape
solar radiation
moisture index
ecological requirement
opposite river bank
river bank
forest area
multivariate analysis
Opis:
The goal of the present research was to find correlations between the topographic attributes of a river valley and local ground-floor vegetation and its habitat requirements expressed by ecological indicator values (EIV), using the geographical information systems (GIS), digital elevation model (DEM), and multivariate statistical analysis. We paid special attention to the river course, which determines the differentiation in slope aspects and the amount of solar radiation reaching the ground surface. The model object was an almost latitudinal, ca. 4-km-long break section of the Sopot river, crossing the escarpment zone of the Central Roztocze Highlands, southeastern Poland. The main material comprised species lists (with estimated abundance) for each ca. 200-m-long section, according to the river valley course, separately for the left and right riverbanks, 40 sections altogether, ca. 15 000 vegetation records, and physical and chemical soil measurements. A 3-meter resolution DEM was derived from a 1:10 000 topographic map. We calculated the correlations between the topographic attributes of the valley, species richness, and the EIVs for all the species recognized in each section of the valley. We found 241 herb plant species in the ground-floor vegetation of the study area. We did not find significant differences between the two riversides (61 ±13 species per one section for the left and 63 ±17 for the right side). Thus, the parallel course of the river valley does not change the species richness on a more “sunny” and more “shiny” riverbank. However, this factor “cooperating” with other topographic attributes of the valley significantly differentiates the shape of species showing various requirements for basic habitat resources: light, moisture, soil trophy, reaction, dispersion, and organic-matter content.
Źródło:
Acta Societatis Botanicorum Poloniae; 2015, 84, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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