| dc.description.abstract | The area around the Sitandiang River is an animal habitat that has been disturbed into open land due to human activities and is vulnerable to the presence of invasive alien plants. Invasive alien plants are species that are introduced intentionally or not from outside their natural habitat and are able to live in new habitats that pose a threat to biodiversity. Damage caused by invasive alien plants can have an impact on ecology and socioeconomics. The aim of this study is to analyze the types and conduct appropriate management of existing invasive alien plants. The research location was determined by purposive sampling method in mixed plantations, secondary forests and primary forests with a total of 195 plots. Data analysis was carried out by selecting invasive alien plant species based on relevant literature and calculating the importance value index (IVI). Management of invasive alien plants was carried out by scoring the value of risk and fissibility. The results showed that there were 40 species, 17 families, and 4.170 individuals. The three most common invasive alien plant species were Austroeupatorium inulifolium, Clidemia hirta and Clibadium surinamense. The importance index of shrubs in mixed gardens ranged from 0.65% - 48.35%, in secondary forest between 0.73% - 14.37% and primary forest between 6.39% and 22.38%. The importance value index of understorey plants in mixed plantations ranged from 0.16% - 19.07%, secondary forests between 0.32% - 17.94% and primary forests between 1.02% - 9.64%. There are 4 categories of risk of invasive alien plants, i.e. high, medium, low and negligible, while in management feasibility there are 3 categories, i.e. very high, high and medium. Management priorities can be done by preventing spread, protecting sites, limited action and monitoring invasive alien plants. | en_US |
