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The status of mangrove ecosystems on Keter Island, Tembeling Waters, Bintan Regency, Riau Islands Lubis, Latif; Lestari, Febrianti; Susiana, Susiana; Rochmady, Rochmady
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 9, No 2 (2025)
Publisher : Sangia Research Media and Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.9.2.93-98

Abstract

Keter Island, located in Tembeling Tanjung Village, Bintan Regency, harbors a diverse mangrove ecosystem, predominantly composed of Rhizophora species. This study aimed to assess mangrove density at the tree level, evaluate vegetation cover, and determine the ecological status of the mangrove ecosystem based on its level of degradation. Field surveys were conducted to obtain an overview of ecosystem conditions, followed by systematic random sampling at sites within Tembeling waters where mangroves are distributed. The results indicate that mangrove tree density falls within the medium category, while canopy cover is classified as very dense with good ecological quality. Overall, the mangrove ecosystem on Keter Island is categorized as moderate, although it still displays favorable ecological characteristics. These findings suggest that while the mangrove ecosystem remains in a medium condition, degradation is ongoing, thereby necessitating further research and rehabilitation efforts. Given the vital role of mangroves in sustaining the ecological balance of small islands, direct monitoring and intervention by relevant authorities are essential to reduce degradation and ensure the long-term sustainability of the mangrove forest on Keter Island.
BIOLOGICAL ASPECTS OF MANGROVE CRAB (Scylla serrata) AT THE BELADEN ESTUARY, DOMPAK, TANJUNGPINANG, RIAU ISLANDS Susiana, Susiana; Kurniawan, Dedy; Rochmady, Rochmady; Nurwisti, Isnaini; Rezky, Bintan; Lestari, Febrianti
BIOTROPIA Vol. 31 No. 1 (2024): BIOTROPIA Vol. 31 No. 1 April 2024
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2024.31.1.2036

Abstract

Mangrove crab (Scylla serrata) is one of the marine organisms that are of significant economic importance. The habitat is distributed in the coastal areas of Indonesia, within the extensive mangrove ecosystems, such as the estuary of Beladen in Dompak, Tanjungpinang. The Beladen estuary area features a flourishing mangrove ecosystem, which supports a diverse range of crab species, with a particular focus on the populations. Therefore, this study aimed to obtain several aspects of mangrove crab in the Beladen estuary, Tanjungpinang. Sampling by the census method was also carried out once every two weeks from May to June 2022. The results showed that the size composition of mangrove crab had a carapace width (CW) of 70-144 mm. The length-weight relationship reported that female and male exhibited a negative and positive allometric growth pattern (b < 3) and (b > 3), respectively. The proportion of male and female was 63% compared to 37% (sex ratio 1:0.59). The value of gonadal maturity index (GMI) in each size class ranged from 2.6512-7.1445 and 1.8751-6.7979 for male and female mangrove crab. Male and female gonadal maturity levels were predominantly categorized as II and III, indicating that crab with mature gonads was not encountered.
Co-Authors . Adrinal Aditya Hikmat Nugraha Agrianti, Renny Agung Dhamar Syakti Agus Putra AS Amilia Jamilatun Amir, Amriansyah Amriansyah Amir Andia, Bherly Ani Suryanti Ani Suryanti Aprilyanto, Bima Armauliza Septiawan Azhari, Sarah Baliyan, Baliyan Cut Meurah Nurul ‘Akla Dedy Kurniawan Depitra, Depitra Dermawati Sihite Dewi Haryanti Dharma, Atria Diah Alviana Dialam, Pangga Kurnia Diana Azizah Dony Apdillah Edy Akhyary Eriawati, Herni Eriawati, Herni Evan Roy Herdiwan Fadhil Dwi Prakoso Fadhliyah Idris Fajeri Fajeri Fajeri Febriansyah, Pajri Fidayat, Fidayat Fitri, Nurul Hidayah Eka Fitria Ulfah Frijona Fabiola Lokollo Gusti Randa Harapin Hafid H. Hazri Rizaldi Hulopi, Mahriyana Ita Karlina Jaaman, Saifullah Arifin Jacqueline M.F Sahetapy Jelita Rahma Hidayati Jupitar Jupitar Jupitar, Jupitar Karnanda Karnanda Khairul Hafsar Khodijah Ismail Kristina, Kariska Lily Viruly Lubis, Latif Lubis, Ledy Perawati Mahuris, Aziz mala kurnia Mariani Mariani Mariani Marina Anggasari Putri Marni, Rani Mizan, Al Moza Fani Maylani Muhammad Syukri Muzadid Salam Muzahar Nancy Willian Nevrita, Nevrita Noviyati, Syamsinar Nugraha, Adiya Hikmat Nur Tasmiah Sirajuddin Nurwisti, Isnaini Putri, Marina Anggasari Putri, Puput Ika Rahima Zakia Rahima Zakia Raja Wira Pradana Rani Marni Rapella Desiani Raplianto, Raplianto Razai, Tengku Said Rezal Hadi Basalamah Rezal Hadi Basalamah Rezky, Bintan Rika Anggraini Rika Anggraini Rika Anggraini Rika Anggraini Rochmady Rumapea, Rahul Sabriyati, Deni Sangaji, Masudin Sanjaya, Putra Saputra, Jaya Selvia, Irma Devi Sinaga, Henna Canlaris Siti Hatijah Soehendrawan, Sherry Febrarismono Susiana Susiana Susiana Syaefullah Syahrial Syahrial Tri Apriadi Try Febrianto Urai Dian Dharma Putra Vitasari Vitasari Vitasari, Vitasari Wahyudin Wahyudin Winny Retna Melani Yudho Andika Zulfikar, Andi