Factors determining waste disposal behavior in coastal areas among communities and tourists at Wosi Beach and White Sand Beach, Manokwari

The coastal areas of Doreri Bay, especially White Sand Beach (tourist area) and Wosi Coast (densely populated area) in Manokwari Regency face environmental problems related to marine debris. Most of the waste comes from household and tourism activities, which are influenced by community behavior. This study aims to analyze the predictive factors that influence waste disposal behavior in both locations. The research method was carried out by direct survey of 100 Heads of Families around the Beach and around the Wosi River, as well as 67 tourists at White Sand Beach from January to March 2025. Data analysis used logistic regression with the dependent variable being the behavior of throwing garbage on the beach and river channels (1=Yes, 0=No). At Wosi Coast, the independent variables that had a significant effect were knowledge about the impact of marine debris (X1; p=0.009; OR=0.66), the distance from home to the beach (X2; p=0.035 OR=2.75) the availability of trash bins (X7; p=0.002; OR=0.421). Meanwhile, at White Sand Beach, the variables of frequency of visits to the beach (X2; p=0.037; OR=1.56) and availability of trash bins (X7; p=0.02; OR=1.71) have a significant influence. The research results show that knowledge, frequency of visits, and the availability of waste management facilities significantly influence waste disposal behavior at both locations. Increasing educational efforts and improving waste management infrastructure could be effective strategies for reducing coastal waste pollution.