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

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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.
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