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  • Germination and survival of endangered Pulsatilla grandis (Ranunculaceae) after artificial seedings, as affected by various disturbances
    Kaligarič, Mitja ...
    Pulsatilla grandis is a rare and endangered species in Central Europe. A field experiment was set up to test the effects of disturbances on its germination and survival rates after artificial ... seeding. Disturbances were simulated by the following treatments: burning, hoeing, and removal of vegetation. The germination percentage decreased rapidly with time, to only 2% in 2-year-old fruits. The germination rate of fresh fruits was the highest in hoed plots (29.2:t 12.9%), followed by removed vegetation plots (21.8:t 17.3%) and burned plots (1.8:t 2.2%). No germination was observed in control plots. The survival rate of seedlings was monitored over the next 5 years. In the year following the treatrnent, all the seedlings survived in the burned plots; in the hoed and in removed-vegetation plots, survival rates were 38.5 :t 2 and 55:t 27%, respectively. Approximately half of them were alive after 5 years. Grassland vegetation in burned quadrates recovered very quickly, whereas in other disturbed plots the numbers of species and vegetation cover were very limited in the first year, but recovered in the following two years.In-seeding was successful as a short-term solution. As a long-term solution the taditional management procedures (mowing) must include a wider area and create disturbances by opening gaps within the closed grassland sward.
    Vir: Israel journal of plant sciences. - ISSN 0792-9978 (Vol. 54, no. 1, 2006, str. 9-17)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2006
    Jezik - angleški
    COBISS.SI-ID - 15090696

vir: Israel journal of plant sciences. - ISSN 0792-9978 (Vol. 54, no. 1, 2006, str. 9-17)

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