Segetal flora of the Wigry National Park

Abstract

Segetal flora of the Wigry National Park (Poland) was studied in the period 2008-2010 within an area occupied by 33 villages. The analysis was based on 195 phytosociological relevés taken in fields of cereal crops, root plants and in stubble fields. The total number of species recorded in agrocenoses was 181 and they represented 36 botanical families. The most numerous families were Asteraceae, Fabaceae and Brasicaceae. The segetal flora of the Wigry National Park included mostly native species of apophytes (53.6%) that predominated over anthropophytes. Among apophytes, meadow apophytes (35 species) and those from waterside habitats (26 species) were noted most often, archaeophytes (74 species) were predominant among anthropophytes, while epecophytes (9 species) and ergasiophytes (1 species) were much less abundant. Among the life forms analysed, therophytes (61.9%) predominated over hemicryptophytes (27.1%) and geophytes (11%). The number of short-lived species in the flora of this Park was much greater (68.5%) than that of perennial ones (31.5%). The flora of the Park included 31 rare species classified in different categories of threat. Among them, Centaurium pulchellum and Centaurium erythraea belong to fully protected species (Dz.U. (Polish Journal of Laws) 2004 No. 168, item 1764).