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    Flora użytków ekologicznych Szczecina
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2011) Friedrich, Stefan; Zakład Botaniki i Ochrony Przyrody, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    In six sites of ecological interests in Szczecin there are in total 596 vascular plant species. Dominant in life forms are hemicryptophytes and the lowest participation have chamaephytes. Native species compose the three quarters of flora and among alien species predominate permanently settled ones. Participation of geographic-historical groups decrease in following order: apophytes, spontaneophytes, archeophytes, kenophytes, diaphytes and cultivated plants. Recognised species represent 15 social-ecological groups among which predominate meadow communities. Significant participation have also species of thermophilous oak forests and mesophytic deciduous woods and ruderal communities. The sites of ecological interest are the refuges for 55 protected and endangered species in Western Pomerania and whole Poland. The biggest mutual similarity show the floras of the sites of ecological interest: „Dolina strumienia Grzęziniec”, „Dolina strumieni Skolwinki, Stołczynki i Żółwinki” and „Dolina strumienia Żabiniec”, and the smallest one – „Klucki Ostrów”. The site of ecological interest of the most natural condition is „Klucki Ostrów” and the most changed site of ecological interest under anthropopressure is „Dolina strumienia Żabiniec”. The most valuable object regarding the flora richness and participation of protected and endangered species is SEI „Dolina strumienia Grzęziniec”.