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Tannins in mangrove plants in Segara Anakan Lagoon, Central Java, Indonesia Endang Hilmi; Lilik Kartika Sari; Asrul Sahri Siregar; Isdy Sulistyo; Arif Mahdiana; Teuku Junaedi; MUSLIH Muslih; Rika Prihati Cahyaning Pertiwi; Sesilia Rani Samudra; Norman Arie Prayogo
Biodiversitas Journal of Biological Diversity Vol. 22 No. 8 (2021)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d220850

Abstract

Abstract. Hilmi E, Sari LK, Siregar AS, Sulistyo I, Mahdiana A, Junaedi T, Muslih, Pertiwi RPC, Samudra SR, Prayogo NA. 2021. Tannins in mangrove plants in Segara Anakan Lagoon, Central Java, Indonesia. Biodiversitas 22: 3508-3516. Mangrove tannin is polyphenol compound and extractive matter in mangrove vegetation. Mangrove tannins have the potentials to support paint industry, animal feed, tanners and wood adhesives industry. This research is aimed to investigate the mangrove species in Segara Anakan, Central Java, Indonesia that produce tannins, and to analyze the distribution and contents of tannin in the part of mangrove plant. A total of 342 samples from 19 mangrove species was collected from 37 sampling points in Segara Anakan. UV-Visible Spectrophotometry was used to analyze the tannin content in the samples. The results showed that the tannins contained in bark and stems were higher (66.6%) than those in leaves (33.4%). Mangrove vegetation can be classified into five classes in terms of tannin percentage with Heritiera littoralis, Nypa fruticans, and Rhizophora mucronata had highest tannin percentage. The clustering analysis of mangrove tannin showed that Ceriops decandra-Ceriops tagal, Acacia auriculiformis-Sonneratia alba, Sonneratia caseolaris-Xylocarpus granatum, and Avicennia marina-Rhizophora apiculata had high similarity of tannin percentage. The distribution of tannins in mangrove species is as follow: 0.59-10.14 kg trees-1 (bark and stem of mangrove diameter > 10 cm) and 0.20-3.74  kg trees-1 (leaves of mangrove diameter > 10 cm) until 8.84-158.96 kg trees-1 (bark and stem of mangrove diameter > 40 cm) and 4.60-91.65 kg trees-1 (leaves of mangrove diameter > 40 cm). R. mucronata and R. apiculata had the highest total tannin content, ranged between 386.60-460.38 kg trees-1.
Survival and growth rates of mangroves planted in vertical and horizontal aquaponic systems in North Jakarta, Indonesia ENDANG HILMI; LILIK KARTIKA SARI; TRI NUR CAHYO; ARIF MAHDIANA; PETRUS HARY TJAHJA SOEDIBJA; EMING SUDIANA
Biodiversitas Journal of Biological Diversity Vol. 23 No. 2 (2022)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d230213

Abstract

Abstract. Hilmi E, Sari LK, Cahyo NT, Mahdiana A, Soedibja PHT, Sudiana E. 2021. Survival and growth rates of mangroves planted in vertical and horizontal aquaponic systems in North Jakarta, Indonesia. Biodiversitas 23: 687-694. Mangrove rehabilitation is aimed to reverse mangrove deforestation and degradation. Various efforts have been conducted to rehabilitate the degraded mangroves, yet problems arise when planting mangroves in the high and permanently water-logged areas in coastline. The aquaponic system is a mangrove planting method introduced to reduce the impact of permanent and high water inundation. This research aims to analyze the survival rate of mangroves planted using vertical and horizontal aquaponic systems in Jakarta's north coast and investigate the correlation between physico-chemical environmental parameters and the survival and growth rates of the planted mangroves. The results showed that the survival rate of mangroves planted in the vertical aquaponic system reached 55.4-96.9%. On the other hand, the highest survival rate in the horizontal aquaponic system was obtained in mangrove planting at 80-100 cm from the bottom with survived plants between 70-90%. The height growth rate of mangroves planted in the aquaponic system was between 0.95-2.33 cm/month. The correlation analysis showed that soil salinity, soil pH and water salinity had a high correlation to support living trees of mangrove seedlings. Rhizophora apiculata, Rhizophora mucronata, and Rhizophora stylosa had highest survival and adaptation in this planting system.
Identification Identifikasi Konflik Antara Nelayan, Pengusaha Ikan dan Pemerintah dalam Kegiatan Perikanan Tangkap di TPI PPS Cilacap, Jawa Tengah: Identifikasi Konflik Antara Nelayan, Pengusaha Ikan dan Pemerintah dalam Kegiatan Perikanan Tangkap Alvian Dwi Vidianto; Naya Distal Awalia Putri; Dinda Devina Putri Wiranti; Syifa Auliya Harsoleh; Cantika Zalsa Nabila; Sabrina Putri Arifiana; Rizka Indah Cahyani; Eva Widyastuti; Alya Sabita Puteri Hendrawan; Tegar Hilmi Syawalandita; Fauzi Surya Nugraha; Jati Suryo Kusumo; Ani Suryanti; Rika Prihati Cahyaning Pertiwi; Lilik Kartika Sari; Muslih; Mahardika Nur Permatasari; Ahmad Naufal Attaqi
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 5 No. 1 (2026): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v5i1.24127

Abstract

The capture fisheries sector plays a strategic role in the national economy, including at the Cilacap Ocean Fishing Port (PPS Cilacap), the center of marine product fishing and distribution. This study aims to identify the forms, causes, and impacts of conflicts between fishermen, fish entrepreneurs, and the government in managing capture fisheries at the Cilacap PPS. Data collection was conducted on November 10, 2025, through questionnaire-based interviews with fishermen, entrepreneurs, and port managers, covering operational aspects, economics, regulatory perceptions, and potential conflicts. The results indicate that conflicts are triggered by differences in interests in access to port facilities, catch distribution, understanding of fishing zone regulations, and inequality in asset ownership and capital sources. Visual analysis of the data shows that fishing activities are dominated by medium-scale vessels measuring 5–30 GT, the use of fishing rods as the primary gear, and a high reliance on diesel fuel for operations. Although most fishermen have joined groups, access to government assistance and insurance remains unequal. These findings underscore the need for institutional strengthening, increased regulatory dissemination, and the implementation of collaborative zone-based fisheries management to reduce the potential for conflict and support the sustainability of capture fisheries in the Cilacap Fishing Port (PPS)
Empowerment Strategy Model For Coastal Horticultural Farmers through Technology Adoption and Innovation among Coastal in Ambal District, Kebumen Regency Intan Wiji Ekawati; Ardiansyah Ardiansyah; Masrukin Masrukin; Nurul Hidayat; Lilik Kartika Sari
Journal of Business, Social and Technology Vol. 7 No. 3 (2026): Journal of Business, Social and Technology
Publisher : Politeknik Siber Cerdika Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59261/jbt.v7i3.720

Abstract

Background: Coastal horticulture supports the food security and welfare of farmers in Ambal District, Kebumen, with great potential for cultivating melons, watermelons, and chili peppers. However, since the introduction of technology and innovation is still far from optimal, an effective farmer empowerment strategy is needed. Objective: This study aims to analyze the factors influencing technology adoption and innovation, assess the level of technology adoption and innovation among coastal horticultural farmers, and develop a strategic framework for farmer empowerment. Methods:  Using the Slovin method in six villages, a quantitative explanatory survey was conducted targeting 344 coastal horticultural farmers. The data was analyzed using structural equation modeling (SEM) with AMOS, investigating agricultural extension workers, social media, social norms, and digital literacy, utilizing social norms and digital literacy as mediators. Results:  Extension workers, social norms, and digital literacy have a significant and positive impact on technology adoption and innovation. Social media has no direct impact but delivers significant indirect effects through digital literacy. Social norms mediate the influence of extension workers. Adoption rates and innovation were highly rated (average = 3,808 points). Conclusion:  Social norms, digital literacy, and the spread of workers are the strongest correlations between technology adoption and innovation, but causal interpretation should be done carefully when considering cross-cutting design. Priority strategies include strengthening farm systems by farm corporations, improving digital literacy, and involving young farmers as drivers of modernization. This is supported by activated outreach services, technology-based regional development, and strong marketing and agricultural business partnerships.
Co-Authors Adhi Iman Sulaiman Adinda Kurnia Putri Agus Atmadipoera Ahmad Naufal Attaqi Alvian Dwi Vidianto Alya Sabita Puteri Hendrawan Amron Amron Amron Ani Haryati Ani Suryanti Ardiansyah -- -- ARIF MAHDIANA Arif Mahdiana Arif Mahdiana Arif Mahdiana Arif Mahdiana Asrul Sahri Siregar Asrul Sahri Siregar Asrul Sahri Siregar Bambang Maryoto Cantika Zalsa Nabila Cecep Kusmana Diana Retna Utarini Suci Rahayu, Diana Retna Utarini Suci Dinda Devina Putri Wiranti Dindy Darmawati Putri Elly Proklamasiningsih EMING SUDIANA Eming Sudiana ENDANG HILMI Endang Hilmi Endang Hilmi Endang Hilmi Endang Hilmi Endang Hilmi Endang Hilmi Endang Hilmi Endang Hilmi Endang Hilmi Endang Suhendang Eva Widyastuti Fathimah Nurfithri Hashifah Fauzi Surya Nugraha Gayuh Laksana Putra Gemilang Mohammad Sakti Hidayat, Nurul Imam Widhiono Iman Budisantoso Intan Wiji Ekawati Isdy Sulistyo Isna Sulistami Hadiyati Jati Suryo Kusumo Junaidi, Teuku Kadarwan Soewardi Luky Adrianto Luthfi Makhasin Mahardika Nur Permatasari Masrukin Masrukin Muhamad Baedowi Muslih MUSLIH Muslih Muslih Muslih Muslih, Ahmad Muslih Mustika Palupi Nabela Fikriyya Nailah Maahira Illahi Naya Distal Awalia Putri Norman Arie Prayogo Norman Arie Prayogo Nuning Vita Hidayati Nurin Aulia Ilmy Nurul Hidayat PETRUS HARY TJAHJA SOEDIBJA Ren Fitriadi Rheinadya Aulia Wibowo Rika Prihati Cahyaning Pertiwi Rika Prihati Cahyaning Pertiwi Rizka Indah Cahyani Sabrina Putri Arifiana Sesilia Rani Samudra Sesilia Rani Samudra Sesilia Rani Samudra Shinta Prastyanti Soedibya, Petrus Hary Tjahja Sukarso Sukarso Syifa Auliya Harsoleh Tegar Hilmi Syawalandita Teuku Junaedi Toto Sugito TRI NUR CAHYO Tri Nur Cahyo Tri Nur Cahyo Tri Nur Cahyo Windiasih, Rili Yusuf Subagyo Yusuf Subagyo Yusuf Subagyo