Naslov
Rosa multiflora Thunb. - A new alien shrub and possible noxious weed in Croatia

Autori
Hruševar, Dario ; Vladović, Dalibor ; Vlahović, Diana ; Mitić, Božena

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts of the 4th Croatian Symposium on Invasive Species with International Participation / Jelaska, Sven D. - Zagreb : Hrvatsko ekološko društvo, 2021, 70-70

Skup
4. hrvatski simpozij o invazivnim vrstama = 4th Croatian Symposium on Invasive Species

Mjesto i datum
Zagreb, Hrvatska, 29.11.2021. - 30.11.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
City of Zagreb ; new taxon ; non-native plant ; ornamental plant ; Rosaceae

Sažetak
Rosa multiflora (family Rosaceae) is native in East Asia and invasive in Australia, Pakistan, and the USA. In Europe, it was recorded for the UK, Poland and Slovakia, but without a defined level of invasiveness. The plant colonises roadsides, old fields, prairies, open woodlands, forest edges, abandoned areas etc. So far, this species has not been recorded for Croatia, but recently we discovered it at two localities in the city of Zagreb: during 2020 at the area of Savica lakes and in 2021 in the city park Maksimir. R. multiflora is easy to determine due to its pinnatifid stipules and hairless styles. The leaves are toward 10 cm long with 5–11 leaflets, each with serrated edges. The flowers form large corymbs (blossom in late spring or early summer), each flower is small (about 2 cm), white or pink. The hips are reddish to purple, around 6 mm in diameter. Large plants produce numerous seeds, mostly dispersed by birds. In observed habitats in Zagreb it mostly colonises the shores of the lakes. While the presence of the plant in Maksimir is still negligible, it is much more widespread on the Savica lakes. In some places, it is a dominant plant within the alliances Berberidion vulgaris and Chelidonio-Robinietalia pseudoacaciae. It is also frequently present in the riparian gallery (mostly dominated by Salix alba and Alnus glutinosa, with some occurrence of Populus alba). As R. multiflora is not mentioned in the flora of the Savica marshland in the the first decade of the 21 st century, we assume that this taxon has a great ability to colonize rapidly. Birds and/or small mammals probably play a major role in its rapid colonization and today this is a very common plant with a tendency to weeds across Savica ornithological reserve.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA