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EN
In the Southern Kujawy District phytocenoses of 33 plant associations and communities of the alliances Phragmition, Scirpion matitimi, Magnocaricion elatae, Caricion gracilis, Sparganio-Glycerion fluitantis and Eleocharidio- Sagittarion were identified.
EN
329 species of vascular plants and 52 species of mosses were recorded in the hydrogenic soils of the South Kujawy region. In the vegetation 78 different communities and associations were represented. Among them 12 communities of anthropogenic origin were distinguished. They belong to the following classes: Bidentetea tripartiti, Plantaginetea maioris and Artemisietea.
EN
Hydrogenic soils of the Southern Kujawy District are overgrown by the phytocenoses of 14 meadow associations and communities of the class Molinio-Arrhenatheretea, 7 plant associations and communities of the class Scheuchzerio- Caricetea fuscae, and one each from the classes Potamogetonetea, Utricularietea intermedio-minoris, Oxycocco-Sphagnetea and Alnetea glutinosae.
LA
In Central Poland wetlands are overgrown by 167 plant associations and communities. The most interesting are: Eleocharitetum acicularis, Hippuridetum vulgaris, Cladietum marisci, Caricelum davallianae, Eleocharitetum quinqueflorae, Liparo-Schoenetum ferruginei.
EN
In the present paper a list of 4 species of mosses and 38 rare species of vascular plants from the southern part of the Kujawy region is given.
EN
Employing a developed equation for determining the coefficient of naturalness a valorization of 55 randomly selected mid-field depressions occurring in the South Kujawy region was carried out to estimate the naturalness of their floras. While investigating the dependence between the number of species and increase in areas of "kettle lakes" it was calculated that at least 20 mid-field depressions of total area not smaller than 14.5 ha per each 10 km² should be preserved to protect 90% of plants growing in the investigated habitats.
EN
In 1949-1989 483 sites of Carex limosa and 315 sites of Scheuchzeria palustris were recorded in Poland. These plants were described in 16 plant communities of the following classes: Scheuchzerio-Caricetea fuscae, Oxycocco-Sphagnetea and Phragmitetea. Carex limosa and Scheuchzeria palustris occur mostly in the following communities in Poland: Caricetum limosae, Drepanoclado-Caricetum limosae, Sphagno- Caricetum limosae and Caricetum limoso-diandrae.
EN
The paper present state of knowledge about dislocation and ecology of Wolffia arrhiza and it’s plant association on area of Poland. The authors describe 35 new localities of Wolffia arrhiza in the South Kujawy Region.
EN
In the present paper a list of 4 species of mosses and 25 rare species of vascular plants from the Międzyrzecze Warty and Widawki Landscape Park and surrounding areas is presented.
EN
After Poland joins the European Union Polish agriculture will face significant structural changes, with the consequent loss of biological diversity. With the aim of taking actions to prevent the degradation of agricultural landscape, in 2002 a common research project "Biodiversity of agricultural landscape of Central Poland and its expected changes in connection with the transformations of agrarian structure after Polish accession to the EU" was started by an international team from the University of Łódź and Justus Liebig University of Giessen, Germany. The principal aim of the research is to assess the current state, expected future changes and threats to biodiversity in agricultural areas of Central Poland. The issue of the protection of agricultural landscapes accords "The national strategy for conservation and sustainable use of biodiversity" announced by the Ministry of the Environment. The investigation will include the following tasks: - to determine the landscape structure of the study area - delimitation of morpholithohydrotopes; - to describe the current land use; - to analyse the floristic diversity of the studied habitats; - to determine the relation of landscape structure, land use and biodiversity; - to study the importance of linear structures in agricultural landscape for floristic biodiversity; - to distinguish areas suitable for the implementation of various protecting measures. The results of investigations will enable to define types of areas with the highest natural values in agricultural landscape, which should be designated as protected areas or covered by agri-environmental schemes. Conclusions from implementation of the new investigation procedure can be adopted for spatial planning at local and regional levels. The results can become a basis for the development of detailed indications of directions of agriculturalland management so that traditional agrarian structure would be preserved in the areas with the highest biological diversity. Adverse changes of agrarian structure and biodiversity that took place in Germany call for urgent implementation of the research project in Central Poland with the aim of taking actions to prevent the degradation of Polish agricultural landscape.
PL
W związku z przewidywanymi zmianami w strukturze własnościowej, obszarowej, kierunków użytkowania ziemi, jakie nastąpią w rolnictwie po wejściu do Unii Europejskiej, Autorzy przedstawiają projekt prac badawczych dotyczących różnorodności biologicznej obszarów rolniczych Polski Środkowej. W Artykule zostały przedstawione cele i proponowane metody badań, charakterystyki trzech wybranych obszarów reprezentatywnych, czynniki wpływające na różnorodność biologiczną, dokonano wstępnej oceny stanu bioróżnorodności oraz wyrażono opinie na temat możliwości ochrony terenów rolniczych.
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