Izvorni znanstveni članak

https://doi.org/10.18054/pb.v119i4.4933

Occurrence of invasive alien plant species in the floodplain forests along the Mura River in Slovenia

Aleksander Marinšek orcid.org/0000-0002-6190-9096 ; Slovenian Forestry Institute
Lado Kutnar orcid.org/0000-0001-9785-1263 ; Slovenian Forestry Institute

Sažetak

Background and purpose: The objectives of our study were to identify invasive alien plant species (IAS) in the main Natura 2000 forest habitat types (FHT) along the Mura River in Slovenia, and to estimate their abundance and cover. The aim of our study was to find out a) What kinds of IAS appear in the research forests? b) What is their frequency and cover percentage? c) Are individual IAS more attached to some FHT than others? d) What is the correlation between the cover of IAS and the tree layer cover?

Materials and methods: We analysed the fidelity of invasive plant species to individual FHT. The studied FHTs along the Mura River were following: 91E0* (Alluvial forests with Alnus glutinosa and Fraxinus excelsior), 91F0 (Riparian mixed forests of Quercus robur, Ulmus laevis and Ulmus minor, Fraxinus excelsior or Fraxinus angustifolia, along the great rivers) and 91L0 (Illyrian oak-hornbeam forests). Two forest areas of about 600 ha were studied in total.

Results: 16 IAS were recorded in studied FHTs. Some species, like Robinia pseudacacia, Impatiens glandulifera, I. parviflora, Fallopia japonica (incl. F. x bohemica), Erigeron annuus, Ambrosia artemisiifolia, Amorpha fruticosa, Conyza canadensis and Juncus tenuis occur only in one or two FHTs, while some species can be found in all studied FHTs (like Solidago sp.). We have found that the most threatened forests are those with prevailing Salix alba, Alnus glutinosa, Fraxinus angustifolia and Ulmus laevis, tree species, which grow closest to the river and on the wettest sites.

Conclusions: The increasing presence of IAS in the study areas seriously affect natural regeneration, stability, and continuity of floodplain FHTs. Therefore, some measures and guidelines for managing of these forests are suggested in this study.

Ključne riječi

non-native plants; riparian vegetation; habitat type; habitat loss; canopy closure; forest management; conservation management

Hrčak ID:

193089

URI

https://hrcak.srce.hr/193089

Datum izdavanja:

31.12.2017.

Posjeta: 1.517 *