Izvorni znanstveni članak

Vegetation dynamics of phrygana in erosion rills on Mykonos (Greece)

Sabine Grabner ; Institut für Botanik, Universität Innsbruck, Austria
Paul Heiselmayer ; Institut für Botanik, Universität Salzburg, Austria

Sažetak

The paper investigates the dynamics of phrygana vegetation in erosion rills on Mykonos Island, Greece, one of the Cyclades archipelago. The landscape of the Cyclades islands is heavily influenced by rural depopulation and the abandonment of agriculture. The vegetation is dominated by secondary phrygana (Trigonella monspelliaca-Sarcopoterium spinosum community) and therophytic-grassland (Tuberarietum guttatae Br. Bl. 31). The consequences of the abandonment of the land are incipient sheet and rill erosion. The species composition of the erosion rills was investigated in relation to the surrounding vegetation and the different erosion processes. Therophytes dominate the vegetation of the erosion rills, and dwarf shrubs; Sarcopoterium spinosum and Cistus incanus were only found as seedlings. 35% of species of the surrounding phrygana vegetation are absent from the erosion rills and 5% of species of the erosion rills are absent from the surrounding vegetation. A DCA ordination showed differentiation of species composition according to different study sites only. No significant differences in species composition were recorded between sites of dominant soil denudation and accumulation within the erosion rills. However, significant differences in species number and vegetation cover were observed. Rainfall runoff influences the accumulation of diaspores in the shelter of dwarf shrubs, rock fragments and tall geophytes such as Asphodelus aestivus.

Ključne riječi

vegetation; annuals; erosion; phrygana; Cyclades; Greece

Hrčak ID:

160634

URI

https://hrcak.srce.hr/160634

Datum izdavanja:

31.12.2000.

Posjeta: 780 *