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EN
Presented in the paper are characteristics of the meadow communities and assessment of the degree of their synanthropization. The studies were conducted on meadows utilized in Walim District at the base of the Sowie Mountains in 2009 and 2010. Floristic releves were collected using the Braun-Blanquet method. The material obtained served to define the phytosociological affiliation and to estimate the degree of synanthropization on the basis of the following indexes: synanthropization, apophytization and anthropophytization. The meadow communities studied were representative of the class Molinio-Arrhenatheretea. Within this class, four phytosociological units were allocated: Arrhenatheretum elatioris, the community Poa pratensis-Festuca rubra as well as two communities with either Agrostis capillaris or Alopecurus pratensis. The meadows examined were characterized by a high average level of synanthropization. The highest values for the synanthropization and apophytization indices were found in meadows of Arrhenatheretalia, in Poa pratensis-Festuca rubra and of Agrostis capillaris. The lowest values were found in the meadow the class Molinietalia. The high values for the apophytization index show that most of the species found in the meadows are of native origin. The low values for the anthropophytization index confirm that only an small number of geographically foreign species are found in extensively utilized meadow communities.
EN
The paper describes the vascular flora and plant communities of the Łacha Farna Old River-bed area of ecological use which is situated in Wrocław city (SW Poland). The full list of recorded plants comprises 173 taxa. The most interesting plant is Ceratophyllum submersum (the rare species in Lower Silesia LC category). The vegetation is also strongly differential 41 plant communities belonging to 8 classes occur here. The two richest classes are: Phragmitetea australis and Artemisietea vulgaris (10 communities found for each). There is only locality of Ceratophylletum submersi association (Potametea class), never recorded earlier on the area and its vicinity. The paper also provides precise descriptions of the localities examined to be used later for all the subsequent comparisons to identify the directions of changes within the studied oxbow lake. The distribution of the analysed localities and protected species is shown as Fig. 1. All the features of the investigated area confirm that it should be protected by local authorities.
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2004
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tom 01
EN
The paper presents results of investigations on interesting and close-to-natural habitats of the north-western part of Pogórze Izerskie Foothills. Only 59 well-preservedhabitats have been found. The forests (33 patches, 281,5 ha – including ca 230 ha of oak-hornbeam forests) andthe environments of rivers and lakes (12 patches, 295 ha) are the most common. Habitats of marshes, wet meadows, termophilous grasslands and ash-alder-willow forests are very rare.
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