|Title (Primary)||Einfluß der Landschaftsstruktur auf die Verbreitung von Pflanzenarten im Mitteldeutschen Trockengebiet|
|Author||Wania, A.; Kühn, I. ; Frühauf, M.; Klotz, S.|
|Abstract||As discussed in recent publications, the distribution and diversity of plant species is no longer only
influenced by natural conditions, but also very strongly by human activity. Two processes are the main
causes: the natural landscape structure has been transformed by cultivation, urbanisation and the construction
of roads and railways, and many bio-geographical barrier ranges of species were eliminated
by the deliberate and unintentional transplantation of species. Extremely high species numbers in certain
ecosystems contrast the loss of biodiversity on the global scale. This requires the investigation of
the factors involved in the distribution and diversity of species in today’s cultivated landscapes.
This study especially focuses on the relationship between plant biodiversity and landscape structure.
The study sites are located within a characteristic landscape in Central Germany (Saxony-Anhalt),
which is defined by urban centres and large agricultural fields. The study is based on two different
study areas and compares mainly urban sites (within the city of Halle) with those dominated by agriculture
(surroundings of the ‘Süßer See’ situated to the West of Halle). Both sites differ considerably in
land use pattern. The landscape structure was analysed using landscape metrics after MCGARIGAL et
MARKS (1994). The number of landscape metrics is reduced by performing principal component analysis.
Principal components and species numbers are then placed in a multiple linear regression.
The results show that the number of species found in the urban landscape is higher than that of the
agricultural landscape. This is the case for native as well as alien plant species. The most decisive
factor for biodiversity in general and the high diversity of native plant species on the local scale is the
variety of landscape structures that is mainly caused by anthropogenic land use. The alien plant species
show a stronger dependence on the proportion of anthropogenic land use.
Keywords: landscape structure, landscape metrics, urban landscape, agricultural landscape, plant species
distribution, alien and native plants
|Persistent UFZ Identifier||https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=6112|
|Wania, A., Kühn, I., Frühauf, M., Klotz, S. (2002):
Einfluß der Landschaftsstruktur auf die Verbreitung von Pflanzenarten im Mitteldeutschen Trockengebiet
Hercynia N.F. 35 (2), 215 - 231