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Short Communication: Intraspecific genetic diversity and population subdivision of rabbitfish (Siganidae: Siganus canaliculatus) in urbanized reefs of Jakarta Bay, Indonesia Hawis Madduppa; MUTIARA KRISTINA MARGARETHA; ADITYA BRAMANDITO; TRI PRARTONO; BEGINER SUBHAN; DONDY ARAFAT; NURLITA PUTRI ANGGRAINI
Biodiversitas Journal of Biological Diversity Vol. 20 No. 10 (2019)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d201017

Abstract

Abstract. Madduppa H, Margaretha MK, Bramandito A, Prartono T, Subhan B, Arafat D, Anggraini NP. 2019. Short Communication: Intraspecific genetic diversity and population subdivision of rabbitfish (Siganidae: Siganus canaliculatus) in urbanized reefs of Jakarta Bay, Indonesia. Biodiversitas 20: xxxx. Indonesian coral reefs and seagrass are heavily influenced by human activities through pollution and habitat loss, and sea-level rise or the increase of ocean temperature due to the global change. In the Jakarta Bay and Seribu Islands, marine communities have been impacted by an increase in eutrophication and sedimentation levels. As a result, these habitats became degraded and could affect their associated organisms such as rabbitfish. Genetic diversity and population structure can provide information about a long-term condition in an aquatic organism. The study was conducted to assess genetic diversity and population structure of rabbitfish (Siganus canaliculatus) across an environmental gradient in Jakarta Bay and Seribu Islands. A total of 31 individuals were collected using gillnet in study sites. A molecular marker mitochondrial Cytochrome oxidase 1 (CO1) was used to amplify DNA. The result of the phylogenetic tree formed two major clades, which generally separate northern and southern region of Seribu Islands populations. AMOVA analysis showed significant genetic differentiation between the population of Siganus canaliculatus in the north zone (National Park) and south zone Seribu Island (FST = 0.38, p<0.005). The highest haplotype diversity (Hd) of Siganus canaliculatus contained was observed in the north (Pulau Semak Daun) and south (Pulau Damar) in both as moderate (0.50). Nucleotide diversity ( ) of Siganus canaliculatus was categorized as low (0.076) to moderate (0.500). Environment and humans seem to affect the value of genetic diversity, and as the study suggests, a significant population subdivision makes this population vulnerable.  
Temporal variation of freshwater as control of mangrove in Banyuasin Estuary, South Sumatra, Indonesia HERON SURBAKTI; I WAYAN NURJAYA; DIETRIECH G BENGEN; TRI PRARTONO
Biodiversitas Journal of Biological Diversity Vol. 24 No. 3 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d240320

Abstract

Abstract. Surbakti H, Nurjaya IW, Bengen DG, Prartono T. 2023. Temporal variation of freshwater as control of mangrove in Banyuasin Estuary, South Sumatra, Indonesia. Biodiversitas 24: 1502-1510. The Banyuasin Estuary receives much freshwater, which transports low-salinity water from upstream to the sea through the rivers that flow along the area. The interaction between the freshwater mass from the river and the highly saline seawater mass moving toward the estuary will affect the condition of the mangroves in the region. This study aims to estimate the freshwater runoff from the two main rivers (Musi River and Banyuasin River) into the Banyuasin Estuary in different seasons, at high and low tides, and their impact on the mangroves present in both estuaries. The interaction between the freshwater and seawater masses can be explained using the freshwater fraction and transect methods used for mangrove zonation analysis. This research focuses on the mouth of the Musi River and the Banyuasin River. The present study showed the influence of freshwater fraction at the mouth of the Musi River is very strong in all seasons, dominated by oligohaline and mesohaline conditions. In contrast, the mouth of the Banyuasin River is dominated by mesohaline and polyhaline conditions. Altogether, ten species of mangroves have been found in the Banyuasin Estuary. Of which, low saline tolerant species, namely Nypa fruticans and Sonneratia caseolaris, are predominant, whereas salt tolerant species, namely Avicennia marina, are predominant in the mouth of the Banyuasin River.
Ecosystem carbon stock and annual sequestration rate from three genera-dominated mangrove zones in Benoa Bay, Bali, Indonesia I PUTU SUGIANA; TRI PRARTONO; RASTINA RASTINA; ALAN FRENDY KOROPITAN
Biodiversitas Journal of Biological Diversity Vol. 25 No. 1 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250133

Abstract

Abstract. Sugiana IP, Prartono T, Rastina, Koropitan AF. 2024. Ecosystem carbon stock and annual sequestration rate from three genera-dominated mangrove zones in Benoa Bay, Bali, Indonesia. Biodiversitas 25: 287-299. The mangrove ecosystem is an ecologically productive wetland system that serves as a carbon sink. However, various factors have contributed to the variation in values when calculating ecosystem carbon stock and the sequestration rate in the mangrove ecosystem. The presence of varying environmental conditions has resulted in the categorizing different species of mangroves, which may lead to variations in ecosystem carbon stock and sequestration rates. In this study, we aim to assess the ecosystem carbon stock and sequestration rate of the mangrove ecosystem in Benoa Bay, Bali, Indonesia. The ecosystem has been categorized into three zones based on the dominant genera: Bruguiera, Rhizophora, and Sonneratia. This research aimed to investigate the influence of mangrove zoning on the variability of carbon stock values and sequestration rates within the ecosystem. The allometric calculation technique and net primary productivity and soil organic carbon percentage values obtained using the Loss on Ignition (LOI) method are used to estimate each zone's ecosystem carbon stock and sequestration rate. The findings of our study indicate that there are notable variations in the carbon stock of ecosystems across different zones. However, we did not observe any substantial changes in the annual carbon sequestration rates. The Sonneratia zone exhibits the maximum value of ecosystem carbon stock and sequestration rate (1,570.9±248.0 tCO2ha-1 and 81.8 tCO2ha-1yr-1), while the Bruguiera zone demonstrates the lowest values (1,029.6±130.9 tCO2ha-1 and 75.6 tCO2ha-1yr-1). The three zones' average carbon stock and sequestration rate are estimated as 338.2 tCha-1 (1239.9 tCO2ha-1) and 21.5 tCha-1yr-1 (78.9 tCO2ha-1yr-1), respectively. In total, the carbon storage and absorption capacity of Benoa Bay amounts to 421,149 tC (equivalent to 1.5 million tCO2), with an annual rate of 25,769.4 tCyr-1 (equivalent to 94,573.6 tCO2yr-1). We recommended that future ecosystem carbon stock evaluations consider mangrove-type zoning characteristics due to significant value fluctuations in various mangrove zones found.
Heavy metals concentration in sediment and their bioaccumulation in several organisms in Benoa Bay and Lembongan Island, Bali, Indonesia PUTU YUDI ADITYA PUTRI; RASTINA RASTINA; TRI PRARTONO; MEUTIA SAMIRA ISMET
Biodiversitas Journal of Biological Diversity Vol. 25 No. 7 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250744

Abstract

Abstract. Putri PYA, Rastina, Prartono T, Ismet MS. 2024. Heavy metals concentration in sediment and their bioaccumulation in several organisms in Benoa Bay and Lembongan Island, Bali, Indonesia. Biodiversitas 25: 3230-3238. Human activities could be responsible for introducing heavy metals into coastal areas, and it can contaminate coastal waters such as the tourism area of Benoa Bay and coastal ecosystems of Lembongan Island, Bali, Indonesia. This study aimed to assess the extent of heavy metals on the sediment of those area and their accumulation rate in several marine organisms, including macro-algae (Ulva sp.), seagrass (Thalassia hemprichii), and sea urchin (Diadema sp.). Samples of surface sediments and marine organisms were collected at six stations for both areas and the presence of five heavy metals (Fe, Pb, Cd, Cu, and Cr) was determined using the AAS method. The concentration those metals varied significantly across the six stations. The geo-accumulation index showed that the sediment has been contaminated by Pb and Cd. The ecological risk of heavy metals contamination in Benoa Bay was apparently higher compared to that in Lembongan Island. Marine organisms in Benoa Bay also significantly accumulated heavy metals than those observed in Lembongan Island. Bioconcentration factor (BCF) shows that Cd, Cr, and Pb were the most accumulated heavy metals in marine organisms (BCF>1). It, therefore, suggest that future studies of the bioavailability of heavy metals and exploration the varying capacities of marine organisms are required. Such important information can be used to predict the accumulation of heavy metals in human bodies, and the possibly daily consumption of marine organisms caught from Benoa Bay and Lembongan Island waters.
Organic carbon in Rhizophora and Avicennia mangrove litter of South Kalimantan, Indonesia PUTRI MUDHLIKA LESTARINA; DIETRIECH GEOFFREY BENGEN; TRI PRARTONO; MUHAMMAD AHSIN RIFA'I; NEVIATY PUTRI ZAMANI; SELVIANI SELVIANI
Biodiversitas Journal of Biological Diversity Vol. 27 No. 1 (2026)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d270132

Abstract

Abstract. Lestarina PM, Bengen DG, Prartono T, Rifa'i MA, Zamani NP, Selviani. 2026. Organic carbon in Rhizophora and Avicennia mangrove litter of South Kalimantan, Indonesia. Biodiversitas 27 (1): d270132. https://doi.org/10.13057/biodiv/d270132. Mangrove ecosystems serve as major blue carbon sinks due to their high productivity and slow decomposition under anaerobic conditions. This study examined organ and species-level variations in the organic carbon content of Rhizophora mucronata and Avicennia marina at two coastal sites in South Kalimantan, Indonesia-Kintap and Asam-Asam. Samples of stems, twigs, leaves, roots, and flowers were analyzed using the Walkley-Black method. The average organic carbon content of R. mucronata was 7.603%, while that of A. marina was 6.193%. The highest carbon concentration occurred in stems and twigs, followed by roots, leaves, and flowers. Mean carbon content was slightly higher in Kintap (7.091%) than in Asam-Asam (6.704%), though the difference was not statistically significant. Regression analysis indicated that plant organs significantly influenced organic carbon levels (p = 0.004), whereas location, station, and species did not. These findings emphasize that organ-specific characteristics-particularly lignin-rich woody tissues-are key determinants of carbon retention in mangroves. Incorporating such organ-level variability enhances the accuracy of blue carbon estimates and supports ecosystem-based conservation and climate mitigation strategies. Moreover, these findings highlight the ecological significance of organ-specific carbon storage in dominant mangrove species, reinforcing their role in sustaining ecosystem diversity and supporting blue carbon conservation strategies under global climate change agendas.
Co-Authors . Riska Abdullah Hisam bin Omar Achyani, Ratno ADITYA BRAMANDITO ADITYA BRAMANDITO Adriani Sunuddin Afdal Afdal Agus Atmadipoera ALAN FRENDY KOROPITAN Alan Frendy Koropitan Alan Frendy Koropitan Albida Rante Tasak Ali Arman Ali Arman Ali Arman Ali Arman Ali Arman Ali Arman Lubis Ali Arman Lubis Ali Arman Lubis Amir Yarkhasy Yuliardi Ananingtyas S Darmarini Andi Agussalim Angga Dwinovantyo Ani Haryati, Ani Anma Hari Kusuma Anna Ida Sunaryo Purwiyanto Anna Ida Sunaryo Purwiyanto Asmika Harnalin Simarmata Beginer Subhan Beta Susanto Barus Beta Susanto Barus Bibiana W. Lay Bintal Amin Chandrika Eka Larasati DAFIT ARIYANTO Dafit Ariyanto DAHLIA WULAN SARI Dea Fauzia Lestari, Dea Fauzia Dedi Soedarma Dedi Soedarma Deni Saputra Detriech G Bengen Dewi S. Ariesta Dewy Septiyanti Yolanda Dietrich G Bengen DIETRIECH G BENGEN Dietriech G Bengen DIETRIECH G. BENGEN DIETRIECH GEOFFREY BENGEN Dietriech Geoffrey Bengen DINA AUGUSTINE Dina Augustine DONDY ARAFAT Dwi Andreas Santosa Dwi Hindarti Dwi Hindarti, Dwi Dwiyoga Nugroho Efriyeldi, Efriyeldi Enan M. Adiwilaga Etty Riani Fadli Syamsudin Fadli Syamsudin Febrianto, Muhammad Riza Hanief Ganjar Saefurahman Hadi Hermansyah Hadi Hermansyah Harpasis S Sanusi Harpasis S. Sanusi Harpasis S. Sanusi Harpasis s. Sanusi Harpasis S. Sanusi Harpasis Slamet Sanusi HAWIS H. MADDUPPA Hawis Madduppa HEDI INDRA JANUAR HERON SURBAKTI Heron Surbakti Heron Surbakti Hilda Zulkifli Hilda Zulkifli Hilda Zulkifli I WAYAN NURJAYA I Wayan Nurjaya I Wayan Nurjaya Imalpen Imalpen Imalpen, Imalpen Indra Jaya Indra Jaya Intan Sari Dewi Irzal Effendi Iswandi Wahab KADARWAN SOEWARDI Kolibongso, Duaitd Kusumaningsih, Alvianita Lestari LILY MARIA GORETTI PANGGABEAN Mai Suriani Mardiansyah Mardiansyah, Mardiansyah Martinez, Stepahnie J. Meutia Samira Ismet Mochamad Tri Hartanto Mohammad Agung Nugraha Mohammad Agung Nugraha Mohammad Agung Nugraha Mohammad Khotib Mohammad Tri Hartanto Muhamad Riza Kurnia Lubis MUHAMMAD AHSIN RIFA'I Muhammad Reza Cordova Muhammad Trial Fiar Erawan MUJIZAT KAWAROE Mujizat Kawaroe Mujizat Kawaroe Mujizat Kawaroe MUJIZAT KAWAROE Mujizat Kawaroe Mulia Purba MUTIARA KRISTINA MARGARETHA Najamuddin N Nella Tri Agustini, Nella Tri Neviaty P Zamani Neviaty P. Zamani NEVIATY PUTRI ZAMANI Nico Wantona Prabowo Nur Aziza NURLITA PUTRI ANGGRAINI NURLITA PUTRI ANGGRAINI Paputungan, Mohammad Sumiran Puradiredja, Sena Pasha PUTRI MUDHLIKA LESTARINA PUTU YUDI ADITYA PUTRI Raisyah Salsabilah Rastina Rastina Rastina RASTINA RASTINA Rastina, Rastina Restya Rahmaniar RICHARDUS KASWADJI RIDWAN AFFANDI Rina Zuraida Rina Zuraida Rina Zuraida Riris Aryawati Riris Aryawati Riris Aryawati Robinson Sitepu Ruyitno Nuchsin Ruyitno Ruyitno Safitri Al Rahmadhani Salsabila, Afviya Santi Susanti Santi Susanti Santi Susanti, Santi SELVIANI SELVIANI Sugiana, I Putu Syahrial Syahrial Syahrial Syahrial Syahrial Syahrial Taslim Arifin WIDIASTUTI KARIM Wike Ayu Eka Putri Yani Permanawati Yeti Darmayati Yeti Darmayati Yuanpin Chang Yuli Naulita Yunita A. Noya Yusli Wardiatno Zainal Arifin Zaki, Nurul Hidayah Mat