Sri Setiawati Tumuyu

Small Island Developing States (SIDS) face persistent waste management challenges arising from geographic fragmentation, limited infrastructure, and tourism pressures. This study develops an integrated assessment framework combining the Efficiency Matrix and Distance-to-Target (DTT) methodology to support evidence-based prioritization across 11 inhabited islands in Kepulauan Seribu, Indonesia. Analysis of 2024 monthly data (mean DTT = 101.42 ± 19.74) identified three statistically distinct performance tiers (Kruskal–Wallis H = 8.65, p = 0.0132, η² = 0.74): High Priority islands requiring major investment, Medium Priority systems suitable for optimization, and Stable islands serving as best-practice models. Time-series decomposition indicated that seasonal variation accounted for 43.29% of performance fluctuation. Integration of Traditional Ecological Knowledge through fisheries cooperatives, women-led waste banks, and community-based practices enhanced resilience and operational efficiency. The findings highlight that differentiated, context-specific interventions outperform uniform approaches, achieving greater cost-effectiveness and cultural legitimacy. This framework offers a replicable tool for adaptive waste governance, supporting strategic resource allocation and sustainable development in resource-constrained archipelagic contexts.

IntroductionThe global pursuit of sustainable development has intensified the need for innovative financing instruments capable of addressing environmental and social challenges while remaining ethically grounded. In Muslim-majority countries, green sukuk has emerged as a promising Islamic finance instrument designed to fund environmentally friendly projects in line with Shariah principles. Despite its growing relevance, scholarly discussion on how green sukuk operationalizes maqashid al-shariah within the framework of the Sustainable Development Goals remains limited, particularly from an integrated conceptual and stakeholder-based perspective.ObjectivesThis study aims to develop and analyze a green sukuk concept based on maqashid al-shariah in achieving sustainable development. Specifically, it seeks to examine the alignment between green sukuk, maqashid al-shariah, and the Sustainable Development Goals; identify priority dimensions in green sukuk development; and assess key implications for investors, governance, and public policy in the Indonesian context.MethodThe study adopts a qualitative-descriptive approach combined with an Analytic Hierarchy Process. Data were collected from secondary sources, including official green sukuk allocation and impact reports, and primary data obtained through interviews and structured questionnaires involving key stakeholders. Content analysis was used to map green sukuk–financed projects to maqashid al-shariah and Sustainable Development Goals, while the Analytic Hierarchy Process was employed to determine priority dimensions in green sukuk development.ResultsThe findings reveal a strong alignment between green sukuk, maqashid al-shariah, and the Sustainable Development Goals, particularly in environmental protection, social welfare, and economic resilience. Environmental and social dimensions emerge as the highest priorities, surpassing economic and governance considerations. However, the study identifies an imbalance in maqashid realization, with intellectual development receiving limited attention. Investor participation is largely driven by functional value considerations, while governance quality and transparency play a critical enabling role.ImplicationsThe results highlight the need for more holistic maqashid-based frameworks that integrate intellectual development, strengthen governance, and enhance sustainability reporting to improve the effectiveness and credibility of green sukuk.Originality/NoveltyThis study offers an integrated maqashid al-shariah–based conceptualization of green sukuk linked explicitly to the Sustainable Development Goals, combining content analysis with stakeholder prioritization to advance the discourse on Islamic sustainable finance.

Households are the largest contributors to food waste in Indonesia. Rural communities often lack effective waste management infrastructure, making it essential to promote low-cost, sustainable alternatives like maggot cultivation to reduce organic waste and support local agriculture. A questionnaire survey of 114 householders was performed on Kertajaga residents to assess their knowledge, attitude, and practice (KAP) towards food waste management, including refuse, reduce, reuse, recycle, and participation in the organic waste bank. The study analyzes the association between knowledge, attitude, and practice. The study also covered the relationship between sociodemographic variables and KAP towards household food waste management. The respondents were divided into two categories: waste bank customers and non-customers, whose differences in KAP levels were also assessed in this research. There is a significant difference between customer and non-customer knowledge, but it is not found in attitude and practice. The main finding of this study is that knowledge of food waste management in rural households is generally good and significantly influenced by socialization activities, while attitudes and practices remain moderate with varied associations to sociodemographic factors. A study regarding the content and forms of waste management socialization that are suitable and acceptable for low-income rural communities needs to be carried out to increase the effectiveness of household food waste management in rural areas.

This article aims to assess the ecosystem services related to water purification by analyzing the water quality conditions of three lakes in Jakarta, each with distinct characteristics. The analysis utilizes both national quality standards and the Water Quality Index (WQI). Water samples collected during the rainy and dry seasons were evaluated using the WQI, which combines various physical, chemical, and biological parameters into a single standardized score, comprehensively representing overall water quality. The study found that several water quality data points did not meet national standards for recreational use due to high levels of water pollutants. The fluctuating WQI values across the seasons indicated that seasonal variability significantly impacts water quality. The WQI scores for the lakes were categorized as medium to poor, with scores of 51.40 for Situ Babakan Lake, 45.20 for Srengseng Urban Forest Lake, and 46.20 for South Sunter Lake. Additionally, the results highlighted that water purification ecosystem services are influenced by the surrounding landscape conditions, human activities, and the presence of wastewater treatment plant (WWTP) facilities. This information is expected to provide valuable insights for local government agencies to enhance lake water quality within environmental policy frameworks.

Background and objective: This research aims to examine the potential of circular business for suboptimal food products in the context of environmentally friendly consumption in Indonesia by analyzing the influence of populations with food insecurity and inadequate food consumption on food expenditure in Indonesia.Methods: This research consists of independent variables: Prevalence of Population with Moderate or Severe Food Insecurity (X1), Prevalence of Inadequate Food Consumption (X2), and dependent variable: Percentage of Expenditure on Food (Y). A panel data analysis method was used to identify the partial and simultaneous relationships between these variables. The data source for this research is secondary data from the Central Bureau of Statistics (BPS) Indonesia from 2020 to 2023.Results: Partial test results show that food insecurity has a significant negative impact on food expenditure in Indonesia. This means that an increase in food insecurity can encourage the acceptance of more affordable suboptimal food products, thereby reducing expenditure. Additionally, it was found that inadequate food consumption has a significant positive impact on food expenditure. This means that the provision of cheaper suboptimal food can reduce inadequate food consumption and help lower the percentage of expenditure on food. Simultaneously, food insecurity and inadequate food consumption affect food expenditure. Increases in food insecurity and inadequate food consumption can drive up food expenditure.Conclusion: The implementation of a circular business for suboptimal food products faces various challenges, including negative consumer perceptions of the quality and safety of suboptimal products. This research confirms that despite significant challenges, with the right strategies and strong collaborations, the circular business of suboptimal food products has great potential to grow and contribute positively to a more sustainable future.

The exploitation of turtles has resulted in a decline in the turtle population. The relocation of turtle eggs from nesting habitats is a widely accepted conservation practice. This research aims to analyze the effectiveness of turtle conservation activities on Kelapa Dua Island. The study adopts a mixed-methods approach, collecting primary data through field observations and interviews and secondary data from the Kepulauan Seribu National Park Office (BTNKpS). The collected data includes information on turtle nest monitoring activities, turtle preservation techniques, and the hatching success rate. The research results show that the hawksbill turtle (Eretmochelys imbricata) is the most commonly found turtle species. The average hatching success rate over the past six years is 71.98%. This value can still be optimized to reach 80% by establishing hatcheries on the nesting islands or islands near the nesting sites. Through this strategy, monitoring can be conducted more regularly, the turtle egg relocation process can be carried out relatively quickly, and vibrations or shocks to the turtle eggs during transportation can be minimized, thus increasing the hatching success rate. Regular monitoring of the environmental conditions of the artificial nests, including temperature, pH, and humidity, is also essential to improve the hatching percentage.AbstrakEksploitasi penyu telah menyebabkan penurunan populasi penyu. Relokasi telur penyu dari habitat penetasan adalah praktik konservasi yang umum diterima. Penelitian ini bertujuan untuk menganalisis efektivitas kegiatan konservasi penyu di Pulau Kelapa Dua. Studi ini mengadopsi pendekatan metode campuran, mengumpulkan data primer melalui observasi lapangan dan wawancara serta data sekunder dari Balai Taman Nasional Kepulauan Seribu (BTNKpS). Data yang terkumpul meliputi informasi tentang kegiatan pemantauan sarang penyu, teknik pelestarian penyu, dan tingkat keberhasilan penetasan. Hasil penelitian menunjukkan bahwa penyu sisik (Eretmochelys imbricata) merupakan spesies penyu yang paling banyak ditemukan. Tingkat keberhasilan penetasan rata-rata selama enam tahun terakhir adalah 71,98%. Nilai ini masih bisa dioptimalkan hingga mencapai 80% dengan mendirikan hatchery di pulau-pulau peneluran atau pulau-pulau yang berdekatan dengan lokasi peneluran. Melalui strategi ini, pemantauan dapat dilakukan lebih rutin, proses relokasi telur penyu dapat dilakukan dengan relatif cepat, dan getaran atau benturan pada telur penyu selama proses transportasi dapat diminimalkan, sehingga meningkatkan tingkat keberhasilan penetasan. Pemantauan teratur terhadap kondisi lingkungan sarang buatan, termasuk suhu, pH, dan kelembaban, juga penting untuk meningkatkan persentase penetasan.

Gulo GS, Tumuyu SS, Patria MP. 2024. Sustainability strategy for turtle conservation in Kelapa Dua Island, Kepulauan Seribu District, Jakarta, Indonesia. Biodiversitas 25: 2307-2314. The background of this research stems from the excessive exploitation and shift from subsistence to commercial use that has caused a decline in turtle populations. Therefore, it is necessary to safeguard turtle populations within Indonesia's distinct marine habitats, particularly at SPTN (National Park Management) I, Kelapa Dua Island, Kepulauan Seribu, Jakarta, Indonesia. Addressing the challenges in turtle conservation, this study systematically collected data through expert interviews, providing in-depth insights into the conservation landscape. The research methodology includes data collection via expert interviews and subsequent analysis using the Strengths, Weaknesses, Opportunities, and Threats (SWOT) method, providing a strategic framework to enhance conservation outcomes. The results highlight the critical need for habitat protection, stakeholder involvement, and rigorous law enforcement. Based on the four alternative strategies that have been prepared, the S-T strategy approach has the highest score, namely 4, making it a priority strategy for sustainable turtle conservation on Kelapa Dua Island. The following strategic priorities are W-O strategy, S-O strategy and W-T strategy. This study's conclusion shows suitable strategies for research problems, such as advocation for habitat protection, active stakeholder involvement, and strict law enforcement to ensure the effectiveness and sustainability of conservation initiatives.

The Circular Economy (CE) concept has been recognized as the core strategy that can support sustainable business through technological innovation that enables CE transition by focusing on resource savings. This case study conducts research on business strategy in achieving CE transition in an agroindustry company, by performing SWOT analysis to assess internal and external factors. The SWOT model provides valuable results that an effective strategy could maximize strengths and opportunities, minimize weaknesses and threats in business by boosting circularity on business-critical factors. The CE adoption by agroindustry company mostly focuses on efficient organic waste management, energy-efficient production, and production process. This study case reveals that while technology plays a significant role in advancing CE, there is still a significant need to pay attention to the social aspect in supporting the creation of worker-owned cooperatives by creating space for employee involvement in finding innovations and adopting technology in business transition into CE process. Social innovation through the involvement of employees by sharing CE vision, synergizing and optimizing internal potential, and building up the green innovation culture has created an internal conducive climate to put CE principle into practice. Further result shows that a labor-intensive company’s business strategy prioritizes employment and job security over maximizing profits, which directly leads to the economic welfare and social protection of the business operation that makes an inclusive business.

Offering food products at lower prices approaching the expiration date, referred to as suboptimal food products, is considered to be able to encourage purchasing considerations by the public. It is based on knowledge of purchasing price-reduced food products by the public and the potential waste in the community focused. The study aimed to contribute to the evaluation of whether offering suboptimal foods at a lower price will reduce food waste in the supply chain. This study analyzes public knowledge, attitudes, and behavior toward suboptimal product price offers in retail stores. The research was conducted in three retail stores in Depok City by exploring research questions involving 274 retail store customers who were analyzed based on a questionnaire. The approach used is a quantitative approach with multiple linear analysis methods using SPSS software. The findings show that public knowledge, attitudes, and behaviors influence suboptimal product price offers in retail stores. This research is expected to be an effective solution to overcome excess food, which leads to food waste at the retail level in sustainable food management.