University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal
Gewählte Master / Diploma Thesis:
Stefanie Rüscher
(2013):
Vergleichende Betrachtung zur Verbreitung von Segetalarten in einer konventionell und biologisch bewirtschafteten Kulturlandschaft.
Master / Diploma Thesis - Institut für Botanik (Botany),
BOKU-Universität für Bodenkultur,
pp 45.
UB BOKU
obvsg
FullText
- Abstract:
- Biodiversity includes the variety of life on all levels: species diversity, genetic diversity and the diversity of habitats and ecosystems. A rich biodiversity is the basis for the functioning of various processes in nature. The Segetalflora makes a significant contribution to improve the tilth and erosion control, provides small habitats for various beneficial organisms and increases plant health effects due to their ability to self-regulation of fields. Step further, wild herbs have valuable phytochemicals and high nutritional-physiological value that those of culture vegetables surpass by far. This describes the variety of applications incumbent arable weeds as medicinal herb and wild vegetables. The surveys are intended to determine if there are differences in the distribution of weed species between organic and conventional farmed systems and how biological crops are affected in the composition of the field flora from their environment. A survey of conventional vegetation surrounding the organic farm Rutzendorf shall document the existing arable plan communities. The vegetation surveys took place within the interdisciplinary project "MUBIL - Monitoring Umstellung auf Biologischen Landbau” (Monitoring Conversion to Organic Farming) held at the organic farm Rutzendorf from the Landwirtschaftlichen Bundesversuchswirtschaften GmbH in Marchfeld. The assumption that organic farming increase biodiversity and thus organic farmed fields hold greater richness in weed species is widespread. Result of this experiment is that both systems have almost identical numbers of segetal species. The slightly higher number of species of biological fields can’t be seen as significant. Therefore the brief superiority in the number of species of biological plots is not reflected in the Shannon-Weaver-Index. In biological areas a low diversity in the sense of Shannon-Weaver view is observed, furthermore the species on biological plots are subjected to a lower evenness. What factors ultimately may be determining for this attempt denouement is explained in more detail.
- Beurteilende(r): Bernhardt Karl Georg