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ASSESSING ECOLOGICAL RESILIENCE OF INDONESIAN CORAL REEFS Bachtiar, Imam; Damar, Ario; ., Suharsono; Zamani, Neviaty P.
JOURNAL OF COASTAL DEVELOPMENT Vol 14, No 3 (2011): Volume 14, Number 3, Year 2011
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Ecological resilience is an important property of natural ecosystem to be understood in coral reef management. Resilience of Indonesian coral reefs was assessed using 2009 COREMAP data. The assessment used 698 data of line intercept transects collected from 15 districts and 4 marine physiographies. Resilience index used in the assessment was developed by the authors but will be published elsewhere. The results showed that coral reefs at western region had higher average resilience indices than eastern region, and Sunda Shelf reefs had higher resilience indices than coral reefs at Indian Ocean, Sulawesi-Flores, or Sahul Shelf. Four districts were found to have coral reefs with highest resilience indices, i.e. Bintan and Natuna (western region), and Wakatobi and Buton (eastern region). Raja Ampat had coral reefs with lower average resilience indices than that of Wakatobi. Uses of resilience index in coral reef management should be coupled with other information such as maximum depth of coral communities.  
Seksualitas dan Perkembangan Gamet Sponge Laut Aaptos aaptos Schmidt Haris, Abdul; Soedharma, Dedi; Zamani, Neviaty P.; Pariwono, John I.; ', Rachmaniar
Jurnal Natur Indonesia Vol 14, No 3 (2012)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

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Abstract

This research was aimed to know the characteristics of gamet development of marine sponge Aaptos aaptos living in tropical waters of Barrang Lompo Island, Spermonde Archipelago, South Sulawesi. In order to know gamet development, it was conducted three periods of sample collection at each moon phase. After sample collection, the specimen were put into tissue cassette and then were removed to fixative solution of FAACC (for 100 mL = 10 mL formaldehyde solution of 37–40%: 5 mL glacial acetic acid: 1.3 g calcium chloride dihydrate: 85 mL destilate water) for +48 hours, and then were removed to 70% alcohol for temporary storage before doing histological preparation following standard procedure. Sexuality of marine sponge Aaptos aaptos living in Barrang Lompo Island is gonochoric. Spermatocyt developed in spermatic cyst, while oocyt developed in the mesohyl. Stage of male gamet development was divided into four phases i.e. spermatocyt I phase, spermatocyt II phase, spermatocyt III phase, and spermatocyt IV (spermatid) phase, similarly, female gamet develop- ment was divided into four phases i.e. oocyt I phase, oocyt II phase, oocyt III, oocyt IV phase. Each phase of gamet development had specific characterstics different from among each others.
STUDY ON BIOROCK® TECHNIQUE USING THREE DIFFERENT ANODE MATERIALS (MAGNESIUM, ALUMINUM, AND TITANIUM) Zamani, Neviaty P.; Bachtiar, Ramadian; Madduppa, Hawis H.; Adi, Jhoni Wahyu; Isnul, Jeddah; Iqbal, Muhamad; Subhan, Beginer
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 2, No 1 (2010): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Jurnal Ilmu dan Teknologi Kelautan Tropis

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Abstract

Biorock® technique is the earliest methods to rehabilitate the damage of coral reef ecosystem. Its improvement is need to carry on since it is subject to some inhibitions in particular the dependence of expensively-imported Titanium (Ti) as the anode materials. The main purpose of this research was to find the best anode material as a possible subtitution which can be economically and easily to apply in Indonesia. Therefore we compared Titanium (Ti) with two other potential anodes material (Magnesium-Mg, and Aluminum (Al). The laboratory study was carried out for two days period (48 hours) in the stagnant sea water aquaria. Four aquarium tanks were treated by different electric current treatment (1 Ampere, 2 Ampere, 3 Ampere, and 5 Ampere, respectively). The reduction of electrode weigh (anode and cathode) was measured. During the experiment, water quality (i.e. pH, and salinity) and mineral waters (calcium) were collected every 6 hour in 48 hours. The solid form of calcium carbonate was analyzed using XDS (X-ray Dispersion Spectrophotometer). The accretion rates on cathode and anode decay were compared between anodes which were treated by different electrical current. Based on the study, three anodes (aluminum, magnesium and titanium) showed different respond. Titanium and Magnesium anode showed electric current affected accretion rate (P < 1), while for aluminum anode showed no differences on treatments.Keywords: mineral accretion, Biorock®, anode, coral reef rehabilitation, accretion rate, anode decay rate, mineral uptake
Reproduction Pattern and Multispecific Spawning of Acropora spp. in Spermonde Islands Reef, Indonesia (Pola Reproduksi dan Pemijahan Multispecific Acropora Spp. di Kepulauan Spermonde, Indonesia) Yusuf, Syafyudin; Jompa, Jamaluddin; Zamani, Neviaty P.; Junior, M. Zairin
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 3 (2013): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Perairan laut tropis seperti di Indonesia yang memiliki variasi lingkungan yang hampir konstan– diduga periode pemijahan karang melebar sampai beberapa bulan dan pada fase bulan yang berbeda, sehingga sulit menentukan waktu pemijahannya dalam skala bulan, hari dan jam. Penelitian ini akan memberikan informasi pola reproduksi dan sinkronisasi pemijahan beberapa jenis karang Acropora spp di Kepulauan Spermonde, Makassar. Sebanyak tujuh jenis karang Acropora spp. diamati kematangan atau kemunculan gonad dan pemijahannya di alam (in situ) dan atau di laboratorium (ex situ) di Marine Station Universitas Hasanuddin. Pola reproduksi menunjukkan spawning berlangsung setiap musim hujan pada bulan Februari-Maret selama tiga tahun berturut-turut. Pemijahan berlangsung secara sinkron dan broadcasting pada awal bulan purnama (0 BP sampai +2 BP), pada jam 18:10–19:00). Bersamaan dengan itu, kondisi lingkungan pemijahan berlangsung  saat puncak pasang tinggi dengan suhu rata-rata harian perairan 30,3ºC dan curah hujan yang masih tinggi di bulan Maret. Informasi ilmiah ini akan bermanfaat untuk mengembangkan riset dan tehnik reproduksi karang di alam dan laboratorium sebagai upaya merestorasi dan merepopulasi jenis karang tertentu. Kata kunci : Acropora spp, reproduksi seksual, Kepulauan Spermonde It has been thought that Indonesian marine tropical waters have less environmental variability, so that spawning period of coral extend for several months and occured during different lunar phases. Therefore the timing of coral spawning in a year cannot be predicted especially for monthly, daily and hourly scales. This study was aimed to investigate the reproductive pattern, and the environmental cues of Acropora spp. in Spermonde Islands  reefs of Makassar. Spawning corals have been determined the presence of mature gonad and spawning event in their habitats (in situ) and in the laboratory (ex situ) of Marine Station of Barrang Lompo Island, Hasanuddin University. Here we showed that seven species of Acropora spp. spawned in February and March of rainy season for consecutive three years (2010, 2011, 2012). The multispecific broadcasting spawning took place in lunar period (0–2 AFM) at 06:10–07:00 pm). The spawning time occured in high tide and the temperature was 30,3oC. This study will be useful for development of coral reproduction research and technique in both field and laboratory as an effort to restore coral reef and enhance coral population in particular. Keywords:  Acropora spp, sexual reproduction, Spermonde Islands
A Standard Criteria for Assesing the Health of Coral Reefs: Implication for Management and Conservation Zamani, Neviaty P.; Madduppa, Hawis H
Journal of Indonesian Coral Reefs Vol 1, No 2 (2011)
Publisher : Journal of Indonesian Coral Reefs

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Abstract

Coral reefs ecosystems are currently under high threat from human activities. LIPI (Indonesian Institute of Sciences) reported that only 5.2 % in 2006 of Indonesian coral reef (an area of 85.700 km2) is still considered in very good. Although these data are further need to be verified, but this can be as basic information that coral reefs in Indonesia need special attention and action. It is unfortunate that the current method to determine the health of reefs is limited. General practitioners are usually using a standard categorization by Yap and Gomez (1988). However, many drawbacks appeared of the use of this standard in Indonesia. This study aims to explore and evaluate the various standards in determining the health of coral reef, and formulate an easy and precise standard for practitioners. This study combines several standards of key parameters in coral reefs. The parameter that used in determining the health of reefs in this study is a combination of percent cover of live coral, algae and mortality index. The proposed criteria for health of coral reef as follows: excellent, good, fair, and poor. These criteria are expected to facilitate practitioner in evaluating the health of coral reefs in accurate and precise that is suitable for Indonesian coral reefs.
PLUMBUM (Pb) CONCENTRATION IN ANNUAL BANDS OF CORAL Porites lutea AT TUNDA ISLAND, BANTEN Riska, .; Zamani, Neviaty P.; Prartono, Tri; Arman, Ali
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 7, No 1 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Jurnal Ilmu dan Teknologi Kelautan Tropis

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Abstract

Coral is one of marine organisms that can accumulate heavy metals such as Pb in its skeleton. The purpose of this study was to determine the concentration of heavy metals Pb in growth bands of coral P. lutea at windward and leeward regions of Tunda Island. The results showed that P. lutea accumulated heavy metals Pb in their growth bands. The results of Pb concentrations in windward region were in range of 6.17-14.76 mg kg-1/year, with the average concentration rate of 9.69 mg kg-1/year.  Meanwhile, in leeward region, the Pb concentrations were in range of 8.37-17.66 mg kg-1/year whith the average concentration rate of 13.33 mg kg-1/year. The Pb concentration in leeward regions was higher than in the windward region. Keywords: heavy metal Pb, coral P. lutea, Tunda Island
ABUNDANCE OF Acanthaster planci AS HEALTH OF CORAL INDICATOR IN TUNDA ISLAND, SERANG REGENCY, BANTEN Zamani, Neviaty P.
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 7, No 1 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Jurnal Ilmu dan Teknologi Kelautan Tropis

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Abstract

The abundance of Acanthaster planci can be used as a health indicator of coral reef ecosystem. A high abundance of A. planci become phatogen on coral and an indication of unhealthy coral reef ecosystem. The objective of this study was to evaluate health of coral reef ecosystem based on the abundance of A. planci and the percent coral cover at Tunda Island, Banten. Field observation conducted in January 2014. The stations were selected by purposive sampling method and based on four-wind direction i.e., north, south, east, and west. Reef data was measured using Line Intercept Transect (LIT), while sampling method for A. planci using Belt Transect. Results showed that the water temperature ranged of 26-28°C, brightness 100%, current speed ranging between 0.05 ms-1and 0.19 ms-1, and salinity  of 30-32 ppt. The water quality values showed a normal range which support  the life of the coral and A. planci.  The Percent coral cover ranged of 54.95-73.00% indicating a good condition. The abundanceof A. planci was of 0.02-0.03 ind/m2. Result showed that coral cover percentage and the abundance of A. planci did not have a significant relationship. Eventhough an A. planci eats the coral polip, but with small amount of A. planci in the coral reef, they merely help to clean the old and unhealthy polip.  This activity will help corals to regenerate their polip. Overall, based on the small abundance of A. planci and the relatively high coral cover percentage, the coral reef ecosystem in Tunda island was categorised in a healthy condition. Keywords: A. planci, coral reef, Tunda Island
BACTERIAL SYMBIONT BIOACTIVE COMPOUND OF SOFT CORAL Sinularia flexibilis AND S. polydactyla Rozirwan, .; Bengen, Dietriech G.; Chaidir, .; Zamani, Neviaty P.; Effendi, Hefni
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 7, No 2 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Jurnal Ilmu dan Teknologi Kelautan Tropis

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Abstract

Symbiont bacteria on soft coral can produce bioactive compounds that plays an important role in chemical ecology and as a marine natural product. The purpose of this study was to find and characterize the antibacterial activities of active compounds extracted from bacterial symbionts of soft coral S. flexibilis and S. polydactyla. The methods used in this study were culture and isolation of bacterial symbionts, extraction of compounds, antibacterial bioassay, and identification of bioactive compounds using the LC-MS analyses. Four isolates of bacterial symbionts were obtained from two samples of soft corals, 2 isolates of Pseudomonas diminuta (A1) and Edwardsiellla hoshinae (A2) from soft coral S. flexibilis, and 2 isolates of E. hoshinae (B1) and P. acidovorans (B4) from S. polydactila. Antibacterial activity were found only from the extracts of bacterial symbionts P. diminuta (A1) and from  S. flexiblis about 10.16 ± 0.3mm (for B. subtilis), 8.66 ± 0.8 mm (E. coli) and 9.86 ± 1.7mm (S. dysentri). No antibacterial activity found from the extracts of S. polydactyla. The results of LC MS analysis showed that the group of diterpenes sinularin produced by soft corals S. flexibilis and bacterial symbionts isolates of P. diminuta (A1).Keywords:  Bacterial Symbiont, Bioactive Compound, Antibacterial Activity, Soft Coral, Sinularia flexibilis, Sinularia polydactyla
KELIMPAHAN Acanthaster planci DI PERAIRAN PULAU TUNDA KABUPATEN SERANG, BANTEN Zamani, Neviaty p.; Lalang, Lalang; Riska, Riska
Jurnal BioWallacea Vol 4, No 2 (2017): Biodiversity Wallacea
Publisher : Jurnal BioWallacea

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Abstract

ABSTRAK Acanthaster planci memainkan peranan penting dalam keseimbangan ekosistem terumbu karang. Apabila jumlahnya melimpah maka akan menjadi hama bagi ekosistem terumbu karang. Oleh karena itu kelimpahan A. planci dapat dijadikan indikator kesehatan terumbu karang. Penelitian ini dilakukan untuk mengetahui kelimpahan A. planci dan  kondisi terumbu karang di perairan Pulau Tunda Kabupaten Serang, Banten. Penelitian ini dilaksanakan pada Bulan Januari 2014. Penentuan stasiun pengamatan dilakukan dengan metode purposif sampling. Stasiun penelitian ditetapkan berdasarkan empat arah mata angin : Utara, Selatan, Timur, dan Barat. Pengambilan data karang menggunakan metode Line Intercept Transect (LIT) sedangkan pengambilan data A. Planci dengan menggunakan metode Belt Transect. Parameter perairan yang diukur adalah suhu, salinitas, kecerahan dan kecepatan arus. Hasil pengukuran parameter fisika–kimia perairan di lokasi pengamatan masih menunjukan kisaran normal yang menunjang bagi kehidupan biota karang dan A. planci, suhu perairan berkisar antara 26-290C, kecerahan perairan 100%, kecepatan arus berkisar antara 0,05 ms-1-0,19 ms-1, dan salinitas berkisar antara 30-32 ppt. Persentase penutupan karang berkisar antara 54,95-73,00% dengan kriteria “Baik”. Kelimpahan A. planci berkisar antara 0,03-0,02 ind/m2. Dari hasil pengukuran persentase penutupan karang dan kelimpahan A. Planci tidak menunjukkan hubungan yang signifikan, karena A. planci hanya memakan polip karang. Hal ini memungkinkan karang untuk segera pulih kembali setelah serangan dari A. planci berhenti. Kata Kunci: Terumbu karang, A. planci, Pulau Tunda. ABSTRACT Acanthaster planci plays an important role in the balance of coralreef ecosystems. If the amountis abundant it will be a pest to the coralreef ecosystem. Hence the abundance of A.planci can be used as indicators of the health of coral reefs.This study were to investigate the abundance of A. planci and coral reff condition in habiting the island of Tunda in Serang Regency, Banten. The study was conducted in January, 2014. Purposive sampling was used to determine the observed station. The station was also decided by considering four wind directions: north, south, east, and west. Line Intercept Transect (LIT) was applied to find out the coral cover, while Belt Transect was used to measure A. planci abundance. Water quality parameters were also measured including temperature, salinity, water clearence and water current. Results showed that water quality was in to larebale range to support both the coral and A. planci live. Water temperature ranged from 26-29oC, water clearence was 100%, velocity ranged from 0.05 ms-1–0.19 ms-1, and salinity ranged from 30-32 ppt. The coral cover ranged from 54,93-73,00% and ranged from in ”good” category. A. Planci abundance ranged from 0,03-0,07 ind/m2. There was no significant correlation between the percentage of the coral cover and A.planci abundance since the organism is a coral pholyp feeder. Key words: Coral reef, A. planci, Tunda Island.
Studi Penentuan Umur dan Laju Pertumbuhan Terumbu Karang terkait dengan Perubahan Iklim Ekstrim Menggunakan Sinar-X Arman, Ali; Zamani, Neviaty P.; Watanabe, Tsuyoshi
Jurnal Ilmiah Aplikasi Isotop dan Radiasi Vol 9, No 1 (2013): Juni 2013
Publisher : BATAN

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Abstract

Telah dilakukan penelitian untuk menentukan umur dan laju pertumbuhan terumbu karang dengan sinar-X dan kaitannya dengan kejadian El-nino serta perubahan iklim di daerah Kepulauan Seribu. Sampel karang massif jenis Porites Lutea diambil secara vertikal menggunakan alat bor pneumatic diameter 5 cm. Sampel terumbu karang dipreparasi dan disinari dengan sinar-X dan dianalisis dengan software Image-J untuk menentukan umur, arah dan laju pertumbuhan linier. Hasil penelitian menunjukkan bahwa rata-rata laju pertumbuhan terumbu karang pada tiga lokasi penelitian tidak jauh berbeda, tetapi penurunan yang lebih besar terjadi di daerah yang lebih dekat dengan daratan Jakarta. Berdasarkan analisis laju pertumbuhan dapat diidentifikasi dua kejadian El-Nino terbesar yaitu tahun 1997-1998 dan 1982-1983.