Ökologische Bedeutung und Naturschutzpotential linienförmiger Biotope der Agrarlandschaft
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

Summary/Abstract: Grass and herbal dominated small line structures possess high significance for the conservationof species and biotopes in the actual cultural landscape of Germany. This papercategorizes and specifies herbal ridges, central stripes of lanes and pasture fences. Thesebiotope-types are then differentiated to herbaceous seams.The floristic and vegetational composition of herbal line structure elements is analysed atfour different levels, which are: species inventory, floristic types, phytocoenoses and nanovegetation complexes. Each level is characterized by its species and biotope conservation value.While floristic types are useful for ecohabitat aspects and species conservation, nano vegetationcomplexes are advised for work on large areas.The ecological significance of a herb-dominated small line biotope depends decisively onthe 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 adjacentgrasslands 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 areaswill secure these efforts. Biotope-binding measures without large area extensivation of agriculturewill only delay the destruction of the line biotopes left.Care should be spent on the methods used to maintain line structures, especially whetherthey are realistic. The effective shelter of herb-dominated small line structures is difficultbecause information on their composition lacks. Agriculture plays an important role in themanagement of these structures.

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