A research on native plant taxa with invasive character in flora of Balıkesir.
In this study, native plant taxa with invasive character that spread in flora of Balıkesir were determined. Their distribution depending on habitat types and their ecological risks were revealed. For this purpose, in addition to the field studies conducted periodically in Balıkesir and its districts, data of floristic observations taken from the same region were evaluated. As a result of the research; 172 genera and 271 taxa belonging to 44 families spreading in flora of Balıkesir were included in the invasive plants with invasive character. Among these, the families containing the most taxa were Asteraceae (45 taxa, 16.6%), Poaceae (38 taxa, 14%) and Fabaceae (33 taxa, 12.2%). The first three genera that contain the most taxa were Trifolium L. (10 taxa, 3.7%), Carex L. (6 taxa, 2.2%) and Juncus L. (6 taxa, 2.2%). In the distribution according to habitat types of taxa, the first three habitats were E1. Dry grasslands (136 taxa, 50.2%), J1. Buildings of cities, towns and villages (31 taxa, 11.4%) and E5.1 Anthropogenic herb stands (30 taxa, 11.1%). The empty lands that emerged as a result of human interventions/affects, overgrazing and unconscious in the region provided an opportunity to settle the invasive species in the meadows and pastures that are resistant to grazing. This situation led to the change of floristic composition, accordingly, decreased meadow and pasture quality, decreased of species richness and negatively affected agriculture. Therefore, the spreading areas of these species should be observed at certain time intervals and necessary measures should be taken. For this purpose, following the taxa has been identified, the situation must be reported to the stakeholders who are competent in this regard. Within the framework of emergency response for taxa that are considered important; Appropriate methods should be used to prevent spreading.