Grassland succession is mediated by umbelliferous colonizers showing allelopathic potential

Autor: Nina Šajna, H. R. Bolhàr-Nordenkampf, Branko Kramberger, Sonja Škornik, Mitja Kaligarič, M. H. Meister
Rok vydání: 2011
Předmět:
Zdroj: Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology. 145:688-698
ISSN: 1724-5575
1126-3504
DOI: 10.1080/11263504.2011.601338
Popis: Two Umbelliferous tall herbs – Laserpitium siler and Grafia golaka tend to form monodominant stands in the montane belt of the North Adriatic Karst after grassland abandonment. The germination and development of shade-tolerant species of further successional stages could be facilitated by favorable climatic conditions, measured in the canopy, but colonization by woody species was not perceived, except for Pinus sylvestris and Pinus nigra, which are not common trees in the area. The vegetation history of the site shows rather slow reforestation after abandonment and almost exclusively with pine woodland. All organs of both Umbelliferous species showed high allelopathic potential, measured as significantly inhibited germination and early development of test plants in bioassays. Under similar treatments, the germination rate of P. sylvestris was reduced, but further development of seedlings was stable. One possible explanation for the relative persistence of Umbelliferous monodominant stands is the ...
Databáze: OpenAIRE
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