engleski

CONTRIBUTION TO THE KNOWLEDGE ON THE DISTRIBUTION OF THE COMMON MILKWEED (Asclepias syriaca L.) IN CROATIA

Based on available literature data, the common milkweed (Asclepias syriaca L.) is mostly present in north-western and eastern Croatia. Introduced as a horticultural element from North America, nowadays it has been listed among invasive plants in many European countries, and made its way on the list of invasive alien species of Union concern (2017/1263). This paper reports of new sites in the area of Pokupsko and eastern part of Slavonija. Comparison of the sites reveals presence of the species along sunny forest edges and roads as well as inundation zones. This linear distribution is probably greatly aided by vehicles used for forest and water management work. In order to limit/terminate its further spreading, we propose further education and awareness raising among different stakeholders (farmers, beekeepers, foresters, water managers, etc.) on negative effects of spreading of common milkweed into natural habitats, as well as measures which can be taken by stakeholders to minimise the risk of further spreading of common milkweed into natural habitats. Additional research is required for efficient removal of common milkweed since many sources mention mowing as ineffective ; moreover, it actually intensifies its distribution. In places such as the observed sites, where it grows either individually or in small groups, the proposal is pulling entire plants out before the fruit is developed and safe disposal of uproot plants.

common milkweed, invasive alien plants, invasive flora mapping, secondary distribution

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