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KARAKTER ARUS PASUT DI PERAIRAN PULAU PUTRI, NONGSA, BATAM BERDASARKAN PEMODELAN HIDRODINAMIKA 2D Wibawanti, Putri; Taofiqurohman, Ankiq; Geurhaneu, Nineu Yayu; -, Subiyanto; Faizal, Ibnu
JURNAL GEOLOGI KELAUTAN Vol 20, No 2 (2022)
Publisher : Pusat Penelitian dan Pengembangan Geologi Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32693/jgk.20.2.2022.764

Abstract

Pulau Putri merupakan pulau kecil terdepan bagian dari Nongsa, Batam yang sempat terancam hilang akibat perubahan garis pantai besar-besaran. Arus dan pasang surut ini merupakan parameter oseanografi yang penting diketahui dalam menganalisis karakteristik perairan. Penelitian ini bertujuan untuk memodelkan arus pasang surut di perairan Pulau Putri Pada penelitian ini digunakan pendekatan numeris 2D dengan menggunakan model Delft3D- FLOW. Simulasi dimulai pada Maret-Mei 2020 Validasi model dengan data elevasi muka air laut menghasilkan nilai yang baik, yaitu dengan RMSE 0,135 dan bias 0,018. Adapun validasi komponen pasang surut menujukkan selisih yangkecil yaitu 0 - 8 cm untuk amplitudo dan 0o - 9o untuk fase. Berdasarkan simulasi, pasang surut di Pulau Putri termasuk tipe condong semidiurnal dan termasuk perairan microtidal dan sedikit mesotidal dengan tunggang pasut kurang dari 2 - 2,5 m. Hasil model arus pasut menghasilkan nilai rata-rata residu 0,1 m/s dan rata-rata arus pasang surut yang dapat mencapai 0,5 m/s. Pola pergerakan arus pasut yang dihasilkan adalah bidirectional, yaitu dari barat menuju timur dan tenggara.
Assessing Coral Reef Health in Northern Waters of Penata Besar Island West Kalimantan Bariah, Anisah; Safitri, Ikha; Nurrahman, Yusuf Arief; Sofiana, Mega Sari Juane; Helena, Shifa; Faizal, Ibnu
Jurnal Biodjati Vol 9, No 2 (2024): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v9i2.38146

Abstract

Penata Besar Island is designated as one of the Coastal and Small Island Conservation Areas (KKP3K) in West Kalimantan, is a critical site for conserving coral reefs and reef fish. Currently, global climate change and anthropogenic activities have exacerbated coral reef bleaching worldwide. In the context of escalating global climate change and human-induced threats, this study evaluates the health condition of coral reefs in the northern waters of Penata Besar Island, Bengkayang Regency. An exploratory approach was employed, utilizing the Line Intercept Transect (LIT) method across four stations at two distinct depths (2-3 m and 5-6 m). The results revealed that coral cover varied with depth. At a depth of 2-3 m, live coral coverage was between 51.2% and 62.4%, classified as good, while at 5-6 m, coverage ranged from 30.4% to 49.4%, categorized as fair. Coral Massive (CM) was the predominant growth form observed. The diversity index (H') ranged from low to medium, the Evennes index (E) from medium to high, and the dominance index (C) was categorized as low. These findings highlight the varying health of coral reefs in different depths and provide a basis and essential insights for targeted conservation efforts.
Acropora formosa Development in Various Depths at Pramuka Island, Seribu Island National Park Irhas, Muhammad; Harahap, Syawaludin A; Sunarto, Sunarto; Ismail, Mochamad Rudyansyah; Faizal, Ibnu
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 2 (2025): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.30.2.203-212

Abstract

Coral transplantation is a proven method for restoring degraded marine ecosystems affected by environmental changes and human activities. This study investigates how depth influences the growth and survival of Acropora formosa using the RakSagon structure at Gosong Pramuka Island, Seribu Islands. RakSagon is a hexagonal dome frame made of 10 mm iron, coated with a resin-catalyst mixture, and designed with two tiers to support coral fragment attachment. The observation spanned 378 days and was divided into three monitoring periods (t0–t3) with varying intervals. The study analyzed growth, survival, and effectiveness at depths of 3, 5, and 7 m. Additionally, the ratio between coral length and width (0.38–1.08) was measured to identify horizontal or vertical growth tendencies. The highest growth occurred at 7 m, averaging 1.41–1.74 cm.mo-1, while the lowest was at 3 m (0.68–0.99 cm.mo-1). Growth varied between observation periods, with the second interval showing the most notable increase. Fragment survival was evaluated using the Survival Rate (SR) and Mortality Index (MI); the MI value of 0.305 indicated moderate mortality, with a 69% success rate (25 of 36 fragments survived). A one-way ANOVA test revealed a significant difference in growth rates among the depths (P= 0.004), confirming that depth plays a crucial role in transplantation outcomes. The findings suggest that a depth of 7 m offers optimal conditions for coral growth and survival, providing valuable insights for future reef restoration programs and stakeholder initiatives.
A BASELINE STUDY ON MACROZOOBENTHOS ASSEMBLAGES IN PASIR ISLAND Prasetiya, Fiddy Semba; Nurrahman, Yusuf Arief; Zalessa, Sheila; Astuty, Sri; Riyantini, Indah; Faizal, Ibnu
JFMR (Journal of Fisheries and Marine Research) Vol. 4 No. 2 (2020): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2020.004.02.7

Abstract

Biodiversity of macrozoobenthos in Pasir Island, Brebes, is under-explored. On the other hand, the baseline information regarding macrozoobenthos is essentially required for better future environmental management. This research aims to analyze macrozoobenthos community structure in the Pasir Island that has not been documented. Surveys were carried out in the rainy season. In this study, a total of 10 sampling locations were classified into two different groups that represent “control” and “disturbed” station. The main structural parameters of the macrozoobenthos identified at each station were specific richness (S), abundance (number of individuals m-2, N) and the Pielou’s index (J). Additionally, the pairwise comparison between groups was conducted by using analysis of similarity (ANOSIM) and the similarity percentage (SIMPER) to obtain the description of community structure. A total of 1054 specimens were counted from the “control” and “disturbed” stations. These specimens belonged to five animal classes, namely, Bivalvia, Gastropoda, Malacostraca, Cephalopoda and Echinoidea. ANOSIM and SIMPER analysis demonstrated that a significant difference was found between “control“ and  “disturbed“ stations with the percentage of dissimilarity value of 88.82%. In addition, environmental variables such pH, salinity and type of substrates contributed significantly to this difference. This result provides insight regarding macrozoobenthos diversity and ecological information that may contribute to further conservation management in the Pasir Island, Indonesia.
Identification of marine debris at Avicennia mangrove root in Pangandaran Beach, West Java Chotimah, Liana Chusnul; MS, Yuniarti; Andriani, Yuli; Faizal, Ibnu; Prasetiawan, Nanda Radhitia
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 10: No. 3 (December, 2023)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v10i3.11812

Abstract

This research was carried out in Pangandaran Regency, specifically in the Batukaras, Nusawiru, and Bojongsalawe areas, in March-April 2022. This research to determine the characteristics of Avicennia type mangroves, habitat characteristics, and the ability of Avicennia type mangrove roots to trap debris. The method used is the Line Transect (LT) method. The results obtained from research on the characteristics of this type of Avicennia mangrove include that the circumference of mangrove roots ranges from 2-24 cm, the height of mangrove roots ranges from 3-83 cm, and the number of mangrove roots ranges from 925-2988 roots. The wider the area, the more debris you will find. Based on the results of the calculation of the characteristics of the Avicennia-type mangrove habitat in Pangandaran, it is in a good range. The calculations include salinity in the range of 15-22 ppt, a temperature of 32-34 °C, a pH value of 7,6-8, and DO (dissolved oxygen) of 4-4,5 mg/L. The trapping of waste in the Avicennia root area is categorized as strong. So the denser the mangrove roots are, the density of debris will increase. This is proven by the large amount of debris found in Batukaras.Keywords: Avicennia mangrove; Characteristics, Category, Density, Marine debris; Type.
Assessing Coral Reef Health in Northern Waters of Penata Besar Island West Kalimantan Bariah, Anisah; Safitri, Ikha; Nurrahman, Yusuf Arief; Sofiana, Mega Sari Juane; Helena, Shifa; Faizal, Ibnu
Jurnal Biodjati Vol 9 No 2 (2024): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v9i2.38146

Abstract

Penata Besar Island is designated as one of the Coastal and Small Island Conservation Areas (KKP3K) in West Kalimantan, is a critical site for conserving coral reefs and reef fish. Currently, global climate change and anthropogenic activities have exacerbated coral reef bleaching worldwide. In the context of escalating global climate change and human-induced threats, this study evaluates the health condition of coral reefs in the northern waters of Penata Besar Island, Bengkayang Regency. An exploratory approach was employed, utilizing the Line Intercept Transect (LIT) method across four stations at two distinct depths (2-3 m and 5-6 m). The results revealed that coral cover varied with depth. At a depth of 2-3 m, live coral coverage was between 51.2% and 62.4%, classified as good, while at 5-6 m, coverage ranged from 30.4% to 49.4%, categorized as fair. Coral Massive (CM) was the predominant growth form observed. The diversity index (H') ranged from low to medium, the Evennes index (E) from medium to high, and the dominance index (C) was categorized as low. These findings highlight the varying health of coral reefs in different depths and provide a basis and essential insights for targeted conservation efforts.