Dewayany Sutrisno

The mangrove ecosystems in Southeast Asia are essential for biodiversity, climate change mitigation, and coastal protection. However, these ecosystems are increasingly threatened by escalating anthropogenic pressures. This study aims to identify research trends, challenges and collaboration patterns in mangrove conservation in Southeast Asia via bibliometric techniques. A total of 572 peer-reviewed papers from 1982 to 2024 were evaluated using VOSviewer and Biblioshiny (R) to discern publication trends, co-authorship networks, theme developments, and citation impact. The result indicates a significant increase in mangrove studies, particularly post-2010. Indonesia leads in publication volume, whereas Singapore and the USA demonstrate higher citation impact and international collaboration. Prominent emergent themes encompass blue carbon, restoration, governance, and ecological services. Thematic evolution indicates a transition from ecological research to transdisciplinary and policy-oriented investigations. To enhance the effectiveness and sustainability of the mangrove conservation efforts, the future research should prioritize integrated approaches, boost international collaboration, and adopt advanced spatial technology for the monitoring and management of mangroves to enhance sustainability.

Coastal flooding driven by sea-level rise and land subsidence poses severe risks to low-lying communities. This study evaluates the causes and impacts of coastal sinking in Sayung, Demak, Central Java, using multi-temporal Landsat imagery (1977, 2024), tidal gauge data, and GPS measurements. A set of spectral indices—Normalized Difference Vegetation Index (NDVI), Weighted Modified Normalized Difference Water Index (WMNDWI), Land Surface Water Index (LSWI), and Normalized Difference Built-up Index (NDBI)—were calculated and integrated as input features for a Random Forest machine learning model to detect and classify environmental changes. Results indicated an average land subsidence rate of approximately 6 cm/year ± 0.8 cm/year, validated against InSAR-based measurements, and a classification accuracy of 91% (RMSE of 0.8 cm/year). A substantial decline in vegetation indices was observed, reflecting the conversion of agricultural land into built-up areas and water bodies. Extensive flooding and shoreline retreat were documented, with high-risk zones concentrated along densely developed coastlines. These findings highlight the urgent need for integrated management strategies, including stricter groundwater regulation, continuous remote-sensing-based monitoring, and large-scale mangrove restoration, to safeguard ecological functions and enhance the socio-economic resilience of coastal communities in the face of accelerating climate change impacts.

Hydropower is a critical renewable energy technology with the potential to contribute significantly to the global clean energy transition. However, despite its many advantages, hydropower development faces complex sustainability challenges, including environmental degradation, social displacement, and fluctuating economic returns. These challenges highlight the need for a comprehensive assessment of hydropower projects across multiple dimensions of sustainability. This study aims to evaluate the sustainability of hydropower by conducting a Systematic Literature Review (SLR) of 65 peer-reviewed articles published between 2012 and 2022. It follows Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) standards to analyse key environmental, social, economic, technical, and policy barriers to sustainable development. The review systematically examines findings from these studies, identifying recurrent themes and critical barriers. The results reveal that while hydropower can enhance energy security and reduce carbon emissions, its implementation often leads to ecological disruption, community displacement, and varying economic benefits. The study underscores the necessity for robust policy frameworks, advanced technologies, and greater stakeholder engagement to mitigate these negative impacts and promote the sustainable development of hydropower.

Background The danger of earthquakes poses a serious threat to people worldwide. One of the most significant challenges is preparing communities to cope effectively with this disaster. Therefore, understanding earthquake hazards is critically important for preparedness, mitigation, and an effective response to this threat. This report aims to observe and conduct a preliminary assessment of the degree to which community preparedness for earthquake disasters has been implemented. Methods Empirical data were obtained from survey respondents and interviews. The respondents were members of a community affected by the Cianjur earthquake, which occurred on November 21, 2022. The data were analysed using the mean range approach, based on Likert scales. Additionally, the Spearman correlation method was employed to indicate the relationship between community awareness and infrastructure readiness. Result Based on empirical evidence and preliminary analysis, it is evident that the preparedness of the community to respond effectively to earthquake catastrophes is inadequate. An apparent lack of readiness is observed in the inadequate construction of housing that fails to meet disaster standards, and the absence of disaster response facilities is notable. Conclusions Based on our initial assumption, it appears that knowledge related to disaster resilience in this area has not been adequately disseminated or socialized. However, this premise requires further investigation.

Background The danger of earthquakes poses a serious threat to people worldwide. One of the most significant challenges is preparing communities to cope effectively with this disaster. Therefore, understanding earthquake hazards is critically important for preparedness, mitigation, and an effective response to this threat. This report aims to observe and conduct a preliminary assessment of the degree to which community preparedness for earthquake disasters has been implemented. Methods Empirical data were obtained from survey respondents and interviews. The respondents were members of a community affected by the Cianjur earthquake, which occurred on November 21, 2022. The data were analysed using the mean range approach, based on Likert scales. Additionally, the Spearman correlation method was employed to indicate the relationship between community awareness and infrastructure readiness. Result Based on empirical evidence and preliminary analysis, it is evident that the preparedness of the community to respond effectively to earthquake catastrophes is inadequate. An apparent lack of readiness is observed in the inadequate construction of housing that fails to meet disaster standards, and the absence of disaster response facilities is notable. Conclusions Based on our initial assumption, it appears that knowledge related to disaster resilience in this area has not been adequately disseminated or socialized. However, this premise requires further investigation.

Background The danger of earthquakes poses a serious threat to people worldwide. One of the most significant challenges is preparing communities to cope effectively with this disaster. Therefore, understanding earthquake hazards is critically important for preparedness, mitigation, and an effective response to this threat. This report aims to observe and conduct a preliminary assessment of the degree to which community preparedness for earthquake disasters has been implemented. Methods Empirical data were obtained from survey respondents and interviews. The respondents were members of a community affected by the Cianjur earthquake, which occurred on November 21, 2022. The data were analysed using the mean range approach, based on Likert scales. Additionally, the Spearman correlation method was employed to indicate the relationship between community awareness and infrastructure readiness. Result Based on empirical evidence and preliminary analysis, it is evident that the preparedness of the community to respond effectively to earthquake catastrophes is inadequate. An apparent lack of readiness is observed in the inadequate construction of housing that fails to meet disaster standards, and the absence of disaster response facilities is notable. Conclusions Based on our initial assumption, it appears that knowledge related to disaster resilience in this area has not been adequately disseminated or socialized. However, this premise requires further investigation.

This study explores data on the perception and response of communities to earthquake disasters, highlighting the importance of public awareness and preparedness