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2004 | 6 |
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Ökologische Bedeutung und Naturschutzpotential linienförmiger Biotope der Agrarlandschaft

Title variants
Ecological functions and potential for nature conservation of lineare biotops in the agricultural landscape
Znaczenie ekologiczne biotopów linearnych w krajobrazie rolniczym i ich potencjał w zakresie ochrony przyrody
Languages of publication
Tekst równoległy w języku polskim. Tłumaczenie z jęz. niemieckiego
mgr Arkadiusz Niewiadomski
Na podstawie badań przeprowadzonych w środkowej Hesji Autor dokonał podziału
typologicznego linearnych struktur trawiasto-zielnych, przedstawił charakterystykę ekologiczną
miedzy typowej i miedzy podlegającej sukcesji oraz wykazał związki między liczebnością
gatunków roślin a intensywnością zagospodarowania powierzchni sąsiadujących z różnymi
formami miedz. Praktycznym aspektem przeprowadzonych badań jest określenie minimalnej
szerokości miedzy, przy której występuje jeszcze znacząca liczba gatunków roślin.
Grass and herbal dominated small line structures possess high significance for the conservation
of species and biotopes in the actual cultural landscape of Germany. This paper
categorizes and specifies herbal ridges, central stripes of lanes and pasture fences. These
biotope-types are then differentiated to herbaceous seams.
The floristic and vegetational composition of herbal line structure elements is analysed at
four different levels, which are: species inventory, floristic types, phytocoenoses and nano
vegetation complexes. Each level is characterized by its species and biotope conservation value.
While floristic types are useful for ecohabitat aspects and species conservation, nano vegetation
complexes are advised for work on large areas.
The ecological significance of a herb-dominated small line biotope depends decisively on
the production intensity of the land use above it (uplier), its cultivation state and its breadth.
Line structures serve as refugial habitats. Starting from here the recolonization of adjacent
grasslands and arable ground takes place. In order to perform this function in the future,
preservation of these line structures is needed. An extensivation in agriculture over large areas
will secure these efforts. Biotope-binding measures without large area extensivation of agriculture
will only delay the destruction of the line biotopes left.
Care should be spent on the methods used to maintain line structures, especially whether
they are realistic. The effective shelter of herb-dominated small line structures is difficult
because information on their composition lacks. Agriculture plays an important role in the
management of these structures.
Central demandments to an effective conservation of herb-dominated small line structures
are: Reduction of nutrient flow into these structures (reduction of production intensity on
6kologische Bedeutung und Naturschutzpotential ... 111
adjacent fields, buffer strips), guarantee of line structure management and keeping a minimum
breadth of line structures (depending on the nature area between 2.5 and 3 m).
The joining of Poland to the European Union causes several problems to agriculture and
biodiversity. There will be exist less linear structures after this change. There are two steps to
conserve linear biotopes; fIrst to investigate the status quo of biodiversity and second to
initiate conservation of linear structures.
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