The purpose of this study is to disclose the importance of preserving the Batu Lumbang mangrove forest in Denpasar, Bali. The mangrove forest is notable for its high biodiversity rate, and it is also become a popular tourist destination at the same time. This study employs convergent parallel mixed-methods data collection, which includes observation, mapping with Google Earth and Landsat 8 satellite imagery, semi-structured interviews with relevant key informants, and a literature review. Afterwards, descriptive techniques are used to analyse the data. The results indicate that the Batu Lumbang mangrove forest has a coverage area of approximately 85.9 Ha, with a rainfall tension of approximately 100 mm/year in the rain season and 60 mm/year in the dry season. Sixteen vegetation species were discovered in the mangrove forest compound, all of which are common in lowland and mangrove ecosystems. There are also 36 species of fauna, the majority of which are bird and avian in nature. Furthermore, changes in land cover indicate a vibrant ecosystem in the Batu Lumbang mangrove forest area. So far, three types of land cover have been identified: mangrove forests, water bodies and the built environment. Mangrove forests remain dominant among these three, accounting for 60.35 %. As a result, it is no wonder that mangroves have become the primary tourist attraction in Batu Lumbang. Some preservation efforts related to tourism activities that can be made based on its ecological value include: establishing a system of visitor management, dealing with waste problems, and spatial management in areas with high biodiversity as a form of rigorous conservation initiative. Keywords: preservation, ecosystem, mangrove, tourist destination, batu lumbang.

Fragmentation impacts disconnecting protected areas in Gunungkidul Regency, namely Bunder Forest Park (BFP) and the Paliyan Wildlife Reserve (PWR). This also decreases the carrying capacity in PWR, degrading the Long-Tailed Macaque (LTM) habitat. Therefore, this research aims to analyze the landscape structure between Protected areas, the habitat suitability of LTM in Gunungkidul Regency, and determine connectivity potential as an environmental management strategy. applied for this research to investigates the structure and fragmentation using Fragstat 4.2 and ArcGIS 10.8 software. Meanwhile, scoring and weighting methods analyze the LTM habitat, while Least Cost Patch Analysis (LCPA) supported by ArcGIS 10.8 determine the corridor. The results showed that the research land cover changed from 1999-2021. Agriculture, scrubs, and settlements are the dominant land cover suspected to cause forest fragmentation. Based on the habitat suitability analysis using parameters such as land cover, vegetation density, slope, altitude, distance from the river, and sources of threats, most of the research area is intermediate habitat suitability class. These findings can be integrated to determine connectivity between protected areas as one of the environment management strategies. Good forest cover can be used to designate a corridor that has the greatest potential to be developed between BFP and PWR and should be maintained as a wildlife crossing.