Jurnal Sumberdaya Akuatik Indopasifik

Spatial Distribution of Benthic Habitat and Substrate at Ngurbloat Beach Utilizing Allen Coral Atlas Data

2025-04-24T00:05:11+00:00

Ngurbloat Beach, located in the Kei Islands, Maluku Province, has a varied coastal ecosystem, including benthic habitats that play an important role in ecological balance and sustainability of marine resources. This study aims to map the spatial distribution of benthic habitats including substrates in the waters of Ngurbloat Beach by utilizing Allen Coral Atlas data. The analysis was conducted through classification of high-resolution satellite images using remote sensing and geographic information system (GIS) methods. The results showed that the total mapped area was 183 ha. Benthic habitats in this area are dominated by coral reefs (18.99%), seagrasses (0.85%), microalgae (2.93%) and sand substrates (16.42%), rocks (39.44%) and dead corals (22.7%). Oceanographic factors and anthropogenic activities in the waters of Ngurbloat Beach affect the distribution of benthic habitats, especially coral reefs that have suffered serious damage and need to be rehabilitated. The utilization of Allen Coral Atlas data proved effective in providing accurate spatial data for benthic ecosystem mapping, which can support conservation efforts and sustainable management of coastal resources.

Microalgae Diversity as a Bioindicator of Pollution in Umbul Water Tourism, Klaten Regency

2025-03-04T07:36:32+00:00

Microalgae give an idea of the fertility of a body of water because the more microalgae in a body of water, the more fertile the water is. This research aims to determine the structure of the microalgae community in the Umbul water tourism area of Klaten Regency. This type of research is descriptive quantitative with a survey method. The data collection technique uses purposive sampling with hand-collection techniques. The data analysis technique uses the Shanon-Wiener diversity index (H'), species evenness index, dominance index, and species richness index as well as looking at physical and chemical parameters to determine water quality. The most common microalgae come from the Bacillariophceae and Cyanophyceae classes.The Shannon-Wiener diversity index for the three stations is in the stable category but the highest index value is at station III at 2.860 and the lowest index value at station I is 2.427. The highest species evenness index was at station I, namely 0.864, and the lowest index at station II was 0.764, so the species evenness index was stable. The highest Dominance Index at station II is 0.13 but is still close to 0 so the dominance index is low. The highest species richness index was at station III and the lowest at station II was 4.83. According to the results of the Umbul Nilo diversity index, Umbul Ponggok and Umbul Sigedang are included in the unpolluted category

Ecological Sustainability and Fishery Resource Utilization Strategies: Establishing Maluku as the National Fish Reserve

2025-06-30T02:50:41+00:00

Selected as the National Fish Reserve (LIN), Maluku Province is known for its abundant marine resources and enormous fishery potential, supported by a capture fishery area of 658,294.69 km² which is the largest in Indonesia. Maluku has three Fishery Management Areas of the Republic of Indonesia (WPPNRI), namely WPPNRI-714, WPPNRI-715, and WPPNRI-718. However, based on production data for the capture fishery and aquaculture sectors in Maluku Province during the 2018-2022 period, these resource potentials have not been optimally utilized. Therefore, this research aims to analyze the ecological conditions and utilization of fishery resources in Maluku Province as a consideration for developing targeted policies and strategies for fishery resource utilization. This research uses a quantitative descriptive approach with data presented in narrative format, simple tables, graphs, and Multidimensional Scaling (MDS) analysis. Data collection was conducted from various sources over a 5-year period (2018-2022). Based on the analysis results, the status of ecological conditions and fishery resource utilization in Maluku Province is classified as less sustainable, indicated by Rapfish scores below 50. To improve the sustainability of fishery resource management in this region, strengthening of monitoring systems and community education about the importance of aquatic ecosystem conservation is needed.