engleski

Plant diversity in the olive orchards in Tribunj – Vodice area

During research of flora diversity in the olive orchards in Tribunj―Vodice area total of 269 taxa of vascular plants belonging to 175 genera and 52 families have been observed. With largest number of taxa Fabaceae (36) and Poaceae (32) families together represents 25.28% of total registered flora. Cichoriaceae, Asteraceae, Caryophyllaceae, Lamiaceae, Brassicaceae and Liliaceae succeed them with the number of registered taxa. Several taxa listed in the Red Book of Croatian flora are registered during the investigation, one endangered (EN) Delphinium peregrinum L. and three vulnerable (VU) species: Ophrys bertolonii Moretti, Ophrys sphegodes Mill. and Trifolium resupinatum L. Furthermore six endemic taxa has been recorded, namely: Anthyllis vulneraria L. ssp. praepropera (A. Kerner) Bornm., Aurinia sinuata (L.) Griseb., Carduus micropterus (Borbás) Teyber ssp. micropterus, Centaurea spinosociliata Seenus, Chaerophyllum coloratum L. and Trifolium dalmaticum Vis. Therophytes are prevailing among life forms as well as plants of the Mediterranean floral elements what is similar to results obtained during investigations of flora in the neighboring region and in Mediterranean. It was observed that olive orchards managed by mowing was richer in flora (235 species and subspecies), including higher number of endemic and endangered species in comparison to 150 species and subspecies that was recorded in tilling managed olive orchards, with two of them being invasive i. e. Amaranthus retroflexus L. and Bidens subalternans DC. Results implicates that percentage of therophytes and cultivated and adventious plants is increasing with human impact while the percentage of the Mediterranean and South-European plants is decreasing. Hence, the flora of mowed olive orchards is crucial for the preservation of the autochtonous flora, endemic and endangered species, making this way of management much better for conservation of the biological diversity and pedosphere protection.

plant diversity; mowing; tilling

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