Neviaty P Zamani
Departemen Ilmu dan Teknologi Kelautan FPIK, Institut Pertanian Bogor

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MICROHABITAT PREFERENCE OF SEASTAR IN HARI ISLAND WATERS, SOUTHEAST SULAWESI Gaffar, Syamsidar; Zamani, Neviaty P; Purwati, Pradina
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 6, No 1 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB) | DOI: 10.29244/jitkt.v6i1.8611

Abstract

The objective of this study was to explore the information on the microhabitat preference of asteroidea in Hari Island Waters, Southeast Sulawesi.  The specimens were collected in August 2012 and December 2012. The methods used in this study were road sampling technique, freehandpicking, and observation. The geographical coordinate position of the asteroidea and microhabitat were recorded by using GPS and then mapped by using the ArcGIS 10.1.  Asteroidea map was overlayed with microhabitat map to determine the microhabitat preference. The study found 9 species of asteroidea belonging to 7 generas, 4 families, and 2 orders. All the asteroidea were relatively common species in the tropical shallow waters. The species were distributed along sides of the island with majority found in the northern side. The dominant species, Linckia laevigata, was found in all microhabitat which had beed adapted to various microhabitat conditions and water fluctuation. Based on area of distribution and population density, seastar tended to use reef coral as its microhabitat preference since reef coral could serve as a food source and habitat protection. Keywords: Seastar, microhabitat preference, Hari island
Development Strategy of Yellow Tail Fusilier Fish (Caesio cuning) Resources Management on Coral Ecosystem in The Seribu Islands Zamani, Neviaty P; Wardiatno, Yusli; Nggajo, Raimundus
SAINTEK PERIKANAN Vol 6, No 2 (2011): Jurnal Saintek Perikanan
Publisher : SAINTEK PERIKANAN

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Abstract

Population of Yellow tail fusilier fish (Caesio cuning) in Seribu Islands at this time has decreased. The main cause of decreasing in abundance of the fish is due to degradation of coral reef ecosystem as a habitat of the fish. The purposes  of the study is  to examine the association of  Yellow tail fusilier fish resources with habitat characteristics. The study was conducted in the Seribu Islands waters on May 2009, at the four islands, each consisting of two observation locations. Percentage benthic  substrate cover, and the number of coral lifeform using the Square Transect method, while to see the abundance of the fish resources using Underwater Visual Cencus. Benthic substrate cover was dominated by abiotic cover (36.42%), hard coral cover was in fair condition (32.27%), dominated by foliose coral, massive coral, acropora branching and encrusting coral. The abundance of Yellow tail fusilier fish was 67 individu/250 m2. North Pramuka, West Panggang, and South Panggang was only observed some small fishes. Closing area can be implemented for management purposes with the combination of introducing brooder.  In vise versa East Pramuka and East Kayu Angin have been observed only adult fishes. Closing area can be implemented for management purposes with the combination of introducing juveniles. In West Kayu Angin closing area can be implemented to give the opportunity juvenile for growing and adult for breading.  South Belanda have all range of size fishes as well as good condition of habitat. It is therefore, this can be developed as marine protected area with eco-freienly marine tourism activities. Keywords: coral reef ecosystem, fish resources, yellow tail fusilier fish, habitat linkages, Seribu islands.
Potensi limbah kulit buah Nyirih Xylocarpus granatum sebagai inhibitor tirosinase Gazali, Mohamad; Zamani, Neviaty P; Batubara, Irmanida
DEPIK Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Vol 3, No 3 (2014): Desember 2014
Publisher : Faculty of Marine and Fisheries, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (352.994 KB) | DOI: 10.13170/depik.3.3.5711

Abstract

The aim of the present study was to analyse the peel waste of Xylocarpus granatum fruits as potential source of tyrosinase inhibitors. Dried peel samples were ground to yield a powder (simplicia). Subsequently, they were extracted with organic solvents of distinct polarity levels, namely n-hexane (non-polar), chloroform (semi-polar) and methanol (polar) by use of the single-maceration method. Inhibitory effects on tyrosinase activity (monophenolase) and DOPA auto-oxidation (diphenolase) were determined in bioassays. Assays with the methanol extract revealed IC50 values of 784.87 μg mL-1 (monophenolase) and of 1176.66 μg mL- 1 (diphenolase), respectively. In contrast, n-hexane and chloroform extracts showed no activity. These results indicate that the methanolic fruit peel extract contained tyrosinase-inhibiting compounds, such as flavonoids, tannins and saponins, whereas the nhexane and chloroform extracts yielded alkaloids, steroids and triterpenoids without tyrosinase-inhibiting activity. The phenolic compounds had a strong effect on the tyrosinase enzymes, inhibiting monophenolases by 97% and diphenolases by 96%, with a positive correlation between the total phenolic content and the inhibition rate in both activities. Penelitian ini bertujuan untuk menganalisis kulit buah Xylocarpus granatum sebagai sumber potensial inhibitor tirosinase. Sampel kering digiling untuk menghasilkan (serbuk) simplisia. Berikutnya, simplisia diekstraksi dengan pelarut organik dengan tingkat kepolaran yaitu n-heksana (non polar), kloroform (semi polar) dan metanol (polar) dengan menggunakan metode maserasi tunggal. Pengaruh inhibisi didalam aktivitas tirosinase (monofenolase) dan auto-oksidasi DOPA (difenolase) ditentukan di dalam uji. Uji ekstrak metanol menunjukkan masing-masing nilai IC50: 784,87 μg mL-1 (monofenolase) dan nilai IC50: 1176,66 μg mL- 1 (difenolase). Sebaliknya, ekstrak n-heksana dan kloroform menunjukkan tidak ada aktivitas. Hasil penelitian ini menunjukkan bahwa ekstrak metanol kulit buah X. granatum mengandung senyawa-senyawa yang menghambat aktivitas tirosinase seperti flavonoid, tanin dan saponin sedangkan ekstrak n-heksana dan kloroform menghasilkan senyawa alkaloid, steroid, dan triterpenoid tanpa penghambatan aktivitas tirosinase. Senyawa fenolik mempunyai pengaruh kuat dalam menginhibisi enzim tirosinase baik aktivitas monofenolase sebesar 97% dan aktivitas difenolase sebesar 96% dengan korelasi positif antara kandungan total fenol dan tingkat inhibisi pada kedua aktivitas
MICROHABITAT PREFERENCE OF SEASTAR IN HARI ISLAND WATERS, SOUTHEAST SULAWESI Gaffar, Syamsidar; Zamani, Neviaty P; Purwati, Pradina
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 6, No 1 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Jurnal Ilmu dan Teknologi Kelautan Tropis

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB)

Abstract

The objective of this study was to explore the information on the microhabitat preference of asteroidea in Hari Island Waters, Southeast Sulawesi.  The specimens were collected in August 2012 and December 2012. The methods used in this study were road sampling technique, freehandpicking, and observation. The geographical coordinate position of the asteroidea and microhabitat were recorded by using GPS and then mapped by using the ArcGIS 10.1.  Asteroidea map was overlayed with microhabitat map to determine the microhabitat preference. The study found 9 species of asteroidea belonging to 7 generas, 4 families, and 2 orders. All the asteroidea were relatively common species in the tropical shallow waters. The species were distributed along sides of the island with majority found in the northern side. The dominant species, Linckia laevigata, was found in all microhabitat which had beed adapted to various microhabitat conditions and water fluctuation. Based on area of distribution and population density, seastar tended to use reef coral as its microhabitat preference since reef coral could serve as a food source and habitat protection. Keywords: Seastar, microhabitat preference, Hari island
EXPLORATION OF SOFTCORAL AS ANTIOXIDANT AT PONGOK ISLAND, SOUTH BANGKA Apri, Rezi; Zamani, Neviaty P; Effendi, Hefni
JURNAL TEKNOLOGI PERIKANAN DAN KELAUTAN Vol 4, No 2 (2013): November 2013
Publisher : Fakultas Perikanan dan Ilmu Kelautan

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Abstract

Soft coral was a part of reef ecosystem that can produce secondary metabolic compounds, as a response to the environment to survive. The metabolic secundaris one of antioxidant. The purpose of this study to look at the compounds contained in the soft coral Sinularia sp and Lobophytum sp at Pongok Island, South Bangka as antioxidant at a depth of 3 meters and 9 meters. Phytochemical analysis of the study results showed that the soft coral Sinularia sp and Lobophytum spcontaining compounds Alkaloids, Flavonoids, Phenols Hydroquinone, Steroids, Triterpenoids, Tannins and saponin.
Assessing Ecological Resilience of Eastern Indonesian Coral Reefs Bahtiar, Imam; Damar, Ario; _, Suharsono; Zamani, Neviaty P
Journal of Indonesian Coral Reefs Vol 1, No 2 (2011)
Publisher : Journal of Indonesian Coral Reefs

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Abstract

Eastern Indonesian reefs are located on the CTI region, that understanding their ecological resiliencies are therefore very important for management of the region. Coral reef resilience was assessed using a resilience index on the 2009 Coremap data. Resilience index used in the assessment was developed by the author but published elsewhere. The study included 7 districts in eastern Indonesia: Pangkep (Pangkajene Kepulauan), Selayar, Buton, Wakatobi, Sikka, Raja Ampat and Biak. The results showed that coral reefs at Wakatobi had the highest average resilience indices, while Sikka had the lowest one. High resilience index at Wakatobi coincided with high number of coral functional groups (life forms) and coral cover. Low average resilience index at Sikka coincided with high algae and other fauna covers. Raja Ampat had coral reefs with a fair resilience index which is similar to coral reefs at Pangkep and Selayar.
Coral Recruitment, Survival and Growth of Coral Species at Pari Island, Thousand Islands, Jakarta : A Case Study of Coral Resilience Abrar, Muhammad; Zamani, Neviaty P
Journal of Indonesian Coral Reefs Vol 1, No 1 (2011)
Publisher : Journal of Indonesian Coral Reefs

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Abstract

Research concerning survival and growth of coral recruits has been conducted in Pari Islands, Kepulauan Seribu, Jakarta , from March  to November 2010, which purpose to determined the effect of biotic and abiotic factors on coral recruitment survival and growth. We observed two life form of coral recruit, Massive and Branching within a transcect area of 2 meter x 70 meter at 5-7 meter depth. Furthermore, for each life form, the coral recruit was grouped in 3 classes, Small(<3cm), Medium (3-6 cm), and large (> 6 cm and 10cm) and all colonies were marked by plastic tag. Coral recruits in this study site were diverse with species diversity reaching 14 genera from 9 families, consisting of 9 genera at ST1-Pari site and 8 genera at ST2-Tikus Site which there were 2 genera founded at each site, Porites and Fungia, and genera of Faviidae were the most dominate, Diversity of coral recruits was moderate level with 1,85 diversity index at ST1-Pari Site and 1,59 at ST2-Tikus Site. The growth of coral recruitment was variated, according to the colony form and size class, which the highest growth of massive colonies to 4.4 mm/month in the small size and branching corals. Survival fo medium size colonies was lower compared to the other categories.
Distribution and Abundance of Black Band Disease on Corals Montipora sp in Seribu Islands, Jakarta Johan, Ofri; Bengen, Dietriech G; Zamani, Neviaty P; _, Suharsono
Journal of Indonesian Coral Reefs Vol 1, No 3 (2012)
Publisher : Journal of Indonesian Coral Reefs

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Abstract

Research on the abundance and distribution of coral disease has been implemented since June andJuly 2011 to determine the preliminary abundance of coral disease on several islands in the Thousand Islands, Jakarta. Observation method used was a 20m-belt transect with 1 m width to the left and right, and 3 replicates. Transects placed on the reef flat with a depth of 0–3 m, and a record number of infected colonies of BBD. The results show that type coral diseases of BBD found in many high coral covers and where Montipora sp dominant at that location. Generally, highest abundances found were at northern of Pramuka Island (0.15 col/m), eastern of Pari Island (0.092 col/m), Penjaliran Island (0.092 col/m), and Tikus Island (0.085 col/m). Statistical test by ANOVA obtained that abundance of BBD was significantly different between groups of study sites, i.e. the distance between the nearest and middle sites, and between the nearest and farthest distance from the mainland of Java Island (significantly difference with value respectively 0.030 and 0.025; confidence level 5%). Meanwhile, the sites between middle and farthest show no real difference. Based on climatological data, the increase in temperature in March and July could lead to coral diseases that occured in the Thousand Islands region.
KEBUTUHAN DATA SPASIAL KELAUTAN DAN KETERBATASAN METODA INDERAJA DALAM MENDUKUNG PEMETAAN SUMBERDAYA KELAUTAN Gaol, Jonson Lumban; Arhatin, Risti Endriani; Zamani, Neviaty P; Madduppa, Hawis
MAJALAH ILMIAH GLOBE Vol 11, No 1 (2009)
Publisher : Badan Informasi Geospasial

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1195.507 KB) | DOI: 10.24895/MIG.2009.11-1.332

Abstract

Kelangkaan data spasial kelautan merupakan permasalahan mendasar dalam perencanaan pembangunan kelautan di negara berkembang seperti lndonesia. Untuk mengatasi permasalahan ini, teknologi inderaja menjadi salah-satu alternatif pilihan. Salah satu ekosistem laut yang mengandung kekayaan sumberdaya alam adalah ekosistem terumbu karang. Pemanfaatan data inderaja untuk pemetaan ekosistem terumbu karang telah diperkenalkan di lndonesia sejak tahun 90-an dan saat ini sudah umum digunakan di Indonesia. Namun demikian, data inderaja mempunyai keterbatasan untuk memetakan objek terumbu karang karena berada hingga kedalaman tertentu yang tidak ada penetrasi cahaya. Pola distribusi terumbu karang yang mengikuti geomorfologi dasar perairan sangat mempengaruhi hasil penginderaan. Hasil penelitian di kepulauan Una-una Togean menuniukkan bahwa interpretasi dari citra satelit tidak menggambarkan kondisi terumbu karang yang sesungguhnya.Kata Kunci: Data Spasial, Kelautan, Inderaja, Terumbu Karang ABSTRACTThe lack of marine spatial data is the fundamental problems in marine development planning in developing countries like Indonesia. We need remote sensing technology to be one alternative option to get over this problem. A coral reef ecosystem is one of the marine ecosystems that contain a rich of marine resources. Utilization of remote sensing data for napping coral reef ecosystems have been introduced in Indonesia since the 90’s and now is commonly used in Indonesia. However, the remote sensing data has limitations for coral reef napping object being in a certain depth into which has no light penetration. Distribution patterns of coral reef following the bottom geomorphology of water influence the sensory results. The results of research conducted in the Una-una Togean Island showed that the coral reef map derived satellite images did not describe the real condition of the reef. Keywords: Spatial Data, Marine, Remote Sensing, Coral Reef
PENGGUNAAN SPEKTROFOTOMETER SEBAGAI PENDETEKSI KEPADATAN SEL MIKROALGA LAUT Zamani, Neviaty P; Muhaemin, Moh.
Maspari Journal : Marine Science Research Vol 8, No 1 (2016): Edisi Januari
Publisher : UNIVERSITAS SRIWIJAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (678.663 KB) | DOI: 10.36706/maspari.v8i1.2649

Abstract

Kemudahan  penggunaan  mikroskop  untuk  pengamatan  kepadatan  sel mikroalga  tetap memiliki  keterbatasan  sehingga  perlu  dicari  suatu  metode alternatif  yang  mampu meminimalisir keterbatasan tersebut. Model regresi linier digunakan untuk memprediksi peluang penggunaan spektrofotometer pada Densitas Optik (Optical Density,  OD) dengan panjang  gelombang  ()  550 nm, 650 nm, dan  750  nm  sebagai  alternatif  pengganti mikroskop  saat  pengamatan kepadatan  sel  mikroalga.  Hasilnya  menunjukkan  bahwa walaupun  seluruh panjang  gelombang  dapat  secara  representatif  menggambarkan kepadatan sel mikroalga, namun OD 650 nm menunjukkan hasil terbaik.KATA KUNCI: Densitas optik, kepadatan sel, mikroalga laut, regresi linier.