engleski

Mapping of the alien and invasive alien plant species in Baranja region (NE Croatia)

Ministry of Environmental Protection and Energy had implemented the project: Establishment of the National Monitoring System for Invasive Alien Species, financed by the Operational Program Competitiveness and Cohesion 2014-2020. Project activities set up in Group 17 comprised mapping of the selected alien and invasive alien plant species in the priority areas, and creation, revision and testing of the monitoring programs. Field investigations had been undertaken with an aim to collect data on distribution of selected 82 species and two genera at national level, in the periods: July-October 2019, and June-October 2020. The mapping area comprises total 356 mapping quadrants with surface 10x10 km and 10-18 localities have to be visited in each of them. For data recording in the field a smartphone device is used with a special GIS/GPS application that enables simple data entry about locality, habitat, species recorded, estimation of size and cover, with entry of photos of habitats and selected plants. During August 2019, field investigations were carried out in eight quadrants, covering most of the area of Baranja region, including Nature Park Kopački rit. Total of 28 alien and invasive alien plant species were recorded, mostly members of the weed and ruderal flora. The most frequent were species: Abutilon teophrasti, Ambrosia artemisiifolia, Asclepias syriaca, Conyza canadensis, Datura stramonium, Erigeron annuus and Solidago canadensis. Rare species were Azolla filiculoides, Broussonetia papyrifera, Duchesnea indica, Eleusine indica, Elodea nuttallii, Impatiens parviflora, Reynoutria x bohemica and Xanthium spinosum. Significant spreading was observed for the species Phytolacca americana and Reynoutria japonica in parts of the Nature Park Kopački rit

biodiversity ; flora ; nature protection ; threats

nije evidentirano