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KELIMPAHAN FORAMINIFERA BENTIK RESEN PADA SEDIMEN PERMUKAAN DI PERAIRAN TELUK JAKARTA Nurruhwati, Isni; Kaswadji, Richardus; Bengen, Dietriech G.; Isnaniawardhani, Vijaya
Jurnal Akuatika Vol 3, No 1 (2012): Jurnal Akuatika
Publisher : Fakultas Perikanan dan Ilmu Kelautan

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Abstract

Perairan Teluk Jakarta merupakan wilayah perairan dangkal dengan kedalaman perairan sangat bervariasi, umumnya memiliki kedalaman 30 meter meskipun di beberapa lokasi hingga 70 meter seperti di utara Pulau Pari dan di utara Pulau Semak Daun. Habitat  foraminifera terdiri dari semua kedalaman laut dari tepi pantai sampai pada laut dalam. Secara umum, spesies  bentik hidup pada kedalaman tertentu. Penelitian ini dilakukan untuk mengetahui kelimpahan dan jenis-jenis foraminifera bentik resen yang terdapat pada sedimen permukaan di perairan Teluk Jakarta. Sebanyak 25 sampel sedimen permukaan yang diambil dari  25 buah core milik Pusat Penelitian dan Pengembangan Geologi Kelautan yang berada di dalam cold storage di Cirebon. Sampel yang diperoleh dianalisis jenis sedimennya dan kandungan foraminifera bentik resen didalamnya. Jumlah yang ditemukan 85  spesies yang termasuk dalam 42 genus. Spesies yang banyak melimpah ditemukan di perairan iniOperculina ammonoides (Gronovlus), Elphidium indicum (Cushman),Planulina  floridana (Cushman) dan Asterorotalia trispinosa (Thalmann). Jenis sedimen yang mendominasi perairan Teluk Jakarta adalah lempung ( 21 stasiun) dan lanau  (4 stasiun).
KELOMPOK FORAMINIFERA BENTIK RESEN BERDASARKAN KOMPOSISI DINDING CANGKANG DI PERAIRAN TELUK JAKARTA Nurruhwati, Isni -; Kaswadji, Richardus -; Bengen, Dietriech G.; Isnaniawardhani, Vijaya -
Jurnal Akuatika Vol 3, No 2 (2012): Jurnal Akuatika
Publisher : Fakultas Perikanan dan Ilmu Kelautan

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Abstract

Penelitian foraminifera bentik Resen dari 25 sampel sedimen permukaan dasar laut Perairan Teluk Jakarta untuk mengetahui komposisi dinding cangkangnya. Hasil pengamatan kelompok foraminifera bentik Resen ditemukan 86 spesies. Terdapat 74,57 %, berdinding cangkang hyalin, 17,85 % berdinding cangkang porselen dan yang berdinding cangkang agglutinin 7,58 %. Spesies yang paling dominan pada foraminifera bentik berdinding cangkang hyalin adalah Operculina ammonoides (Gronovlus) yaitu 18,02 % dan Elphidium indicum (Cushman) yaitu 10,7 %. Ditinjau dari pola sebaran berdasarkan komposisi dinding cangkang, didominasi oleh sub ordo. Rotaliina yang mempunyai komposisi dinding cangkang calcareous hyalin. Adanya kelompok dominan yang berdinding cangkang hyalin menunjukkan bahwa pada daerah penelitian merupakan lingkungan laut normal dengan kandungan karbonat yang cukup tinggi. Kata Kunci : foraminifera bentik resen, komposisi dinding cangkang, dan teluk jakarta
Analysis of Feasibility and Carrying Capacity of Marine Fishery Tourism Governance in Spermonde Islands of Pangkajene and Islands Regency Kasnir, Muhammad; Fahrudin, Achmad; Bengen, Dietriech G.; Boer, Mennofatria
Forum Pasca Sarjana Vol 32, No 4 (2009): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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Abstract

Diverse activities in Spermonde Islands cause serious damage of coral reef and seagrass ecosystem.  This research is aimed to assess appropriateness and carrying capacity of gavernance of marine fishery tourism in Spermonde Islands.  The research was conducted from March to July 2008 in several islands within Spermonde Archipelago i.e. Sapuli, Satando, Saugi, Cambang-Cambang, Salemo, Sakoala, Sabangko, Sagara, Sabutung and Gusung Torajae.  The research stations were determined based on result of satellite images.  Date collected were water quality, interview data, and secondary data.  Analysis method of ecosystem condition used line intercept transects, environmental characteristics used principal component analysis, relationship between environmental characteristics and ecosystem potency applied correspondence analysis. feasibility analysis was continued with analysis of carrying capacity.  Results of the research showed that condition of live coral and seagrass were categorized as bad to good.  Based on feasibility analysis, it is known that carrying capacity of floating fish cage is 380 units, seaweed culture is 326 units, scuba diving tourism is 41.58 people/day, snorkeling is 17.82 people/day, coastal tourism is 11.754 people/day, and potency of coral fish is 71.21 tones/year   Keywords: potency, carrying capacity, Spermonde Islands
Study of Mangrove Areas Characteristic and Suitability for Mangrove Ecotourism Activity in Togean Islands of Togean Islands National Park Laapo, Alimudin; Fahrudin, Achmad; Bengen, Dietriech G.; Damar, Ario
Forum Pasca Sarjana Vol 33, No 4 (2010): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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Abstract

The mangrove area of Togean Islands have been used for marine ecotourism activities.  The increasing of anthropogenic activities affected to decreasing of mangrove area and mangrove tourism attractive.  This research aim to assess characteristic and suitability of mangrove forest area for mangrove ecotourism uses.  The data were analyzed using principal component analysis (PCA) and spatial analysis with geographic information system (GIS) approach.  The result showed that the correlation value of those four parameters was relatively higher in November than in July.  Those parameters were the component that forms the main axis in both month. The increasing of turbidity and decreasing of salinity in November rather than in July were correlated with rainy season.  Generally, mangrove area in Togean Islands was suitable with conditional categories to mangrove ecotourism uses.  Ecotourism has the most potential to meet these goals and it will be able to tackle most of the problems when GIS technology would be used as a tool to minimize the impact.   Keywords: area suitability, mangrove, ecotourism, Togean Islands
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 : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB) | DOI: 10.29244/jitkt.v7i2.10994

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
Back-Matter Bengen, Dietriech G.
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 9, No 1 (2017): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB) | DOI: 10.29244/jitkt.v9i1.18018

Abstract

Back-Matter
ESTIMASI NILAI EKSTERNALITAS KONVERSI HUTAN MANGROVE MENJADI PERTAMBAKAN DI DELTA MAHAKAM KABUPATEN KUTAI KARTANEGARA Setiawan, Yunianto; Bengen, Dietriech G.; Kusmana, Cecep; Pertiwi, Setyo
Jurnal Penelitian Hutan Tanaman Vol 12, No 3 (2015): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (537.386 KB) | DOI: 10.20886/jpht.2015.12.3.201-210

Abstract

Penurunan manfaat dari ekosistem mangrove baik secara langsung maupun tidak langsung disebabkan oleh konversi hutan mangrove menjadi tambak. Untuk mengembalikan kondisi lingkungan, pemerintah melakukan rehabilitasi tambak dengan menerapkan sistem tambak wanamina. Penelitian ini bertujuan mengestimasi nilai sylvofishery eksternalitas kawasan mangrove yang dikonversi menjadi tambak di Delta Mahakam dan menghitung analisis usaha budidaya tambak dengan sistem ekstensif-tradisional serta sistem wanamina. Hasil penelitian menunjukkan nilai manfaat yang hilang mencapai Rp 209.688.551.071 per tahun dari hutan mangrove yang telah dikonversi menjadi tambak seluas 75.311 hektar. Nilai BCR tambak sistem ekstensif-tradisional menunjukan nilai negatif dan tambak sistem wanamina bernilai positif artinya bahwa pemanfaatan tambak dengan sistem wanamina akan mendatangkan keuntungan dan layak dilaksanakan pada saat ini.
HUBUNGAN ANTARA KETERSEDIAAN CAHAYA MATAHARI DAN KONSENTRASI PIGMEN FOTOSINTETIK DI PERAIRAN SELAT BALI Fauziah, Anna; Bengen, Dietriech G.; Kawaroe, Mujizat; Effendi, Hefni; Krisanti, Majariana
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 11, No 1 (2019): 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.v11i1.23108

Abstract

ABSTRAKCahaya matahari merupakan salah satu faktor lingkungan terpenting baik secara langsung maupun tidak langsung bagi organisme fotosintetik perairan dalam menyediakan energi untuk diubah menjadi energi kimia dengan bantuan klorofil. Penelitian ini bertujuan untuk mengkaji hubungan antara ketersediaan cahaya matahari  dan konsentrasi pigmen fotosintetik di Perairan Selat Bali. Penelitian dilaksanakan pada pagi, siang dan sore hari pada lima stasiun penelitian di Perairan Selat Bali. Analisis korelasi kanonik digunakan untuk mengetahui hubungan antara ketersediaan cahaya matahari dan pembentukan pigmen fotosintetik. Hasil penelitian menunjukkan bahwa intensitas cahaya matahari (Y2) lebih berpengaruh terhadap pembentukan pigmen klorofil-b (Y1) dengan korelasi kanonik sebesar 0,4512 bilamana dibandingkan dengan pembentukan pigmen klorofil-a (Y1) dengan nilai korelasi sebesar 0,3982. Semakin tinggi pembentukan pigmen klorofil-b (Y1) dapat meningkatkan pembentukan pigmen karotenoid (Y1) secara signifikan dengan nilai korelasi kanonik sebesar 0,7419. Kesimpulan dari hasil ini, bahwa pigmen klorofil-b dan pigmen karotenoid akan terbentuk secara optimum pada intensitas cahaya rendah. ABSTRACTSunlight is one of the most important environmental factors both directly and indirectly for  photosynthetic organisms in providing energy to be converted into chemical energy with the help of chlorophyll. This study aims to examine the relationship between the availability of sunlight and the concentration of photosynthetic pigments in Bali Strait waters. The study was conducted in the morning, midday and afternoon at five research stations in the Bali Strait waters. Canonical correlation analysis was used to determine the relationship between sunlight availability and photosynthetic pigment formation. The results showed that the intensity of sunlight (Y2) had more influence on the formation of chlorophyll-b (Y1) pigments with canonical correlation of 0.4512 when compared with the formation of chlorophyll-a (Y1) pigment with a correlation value of 0.3982. The higher formation of chlorophyll-b (Y1) pigments can significantly increase the formation of carotenoid pigments (Y1) with canonical correlation values of 0.7419. From these results it can be concluded that chlorophyll-b pigments and carotenoid pigments will be formed optimally at low light intensities.
ANALISIS PERFORMA EKONOMI PERIKANAN CAKALANG SKALA SEDANG DI ZEE SAMUDERA HINDIA Nur, Andi Irwan; Boer, Mennofatria; Bengen, Dietriech G.; Subandar, Awal
Jurnal Bisnis Perikanan Vol 1, No 1 (2014): Journal of fishery business
Publisher : Program Studi Agrobisnis Perikanan, Fakultas Perikanan dan Ilmu Kelautan, UHO

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Abstract

Research is aimed at analyzing comprehensively economic performance of middle scale skipjack fisheries in EEZ Indian Ocean. Economic performance is assessed through sensitivity analysis using multidimensional scaling approach with Rapfish ordination techniques of 10 attributes. Scoring criteria for each attribute have been modified according to Indonesia’s fishery contexts. Analysis result shows that economic performance of the fishery is in general still unsatisfactory. Other incomes sources is the worst attribute with sensitivity 5.36 followed by marketable right, limited entry, and ownership with sensitivities 4.92, 4.28, and 4.18 respectively. Sensitivities of other economic attributes show enough to good performances with sensitivities ranging from 3.89 to 1.08. Such results indicating the urgency for rapid responds to manage the worst performance attributes.
Biocapacity in the Gili Matra Region: A Spatial Assessment of The Carrying Capacity of Small Islands Kurniawan, Fery; Adrianto, Luky; Bengen, Dietriech G.; Prasetyo, Lilik Budi
Journal Omni-Akuatika Vol 13, No 2 (2017): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (699.606 KB) | DOI: 10.20884/1.oa.2017.13.2.228

Abstract

Spatial as a contributor to biological productivity and ecosystem services have not been considered in the sustainable development of small islands. The aim of this study to appraise biocapacity (BC) in the Gili Matra Islands to estimate the existing carrying capacity for sustainable development, and refines the current BC methodology that emphasizes the spatial aspects in small islands. Based on analysis results, the Gili Matra Islands have BC total ranging from 659.46 to 1,069.57 gha in 2010, and increased from 673.64 to 1,093.02 gha in 2014. The highest total BC is the Gili Trawangan Island, while the lowest is the Gili Meno Island, but for the local BC is the opposite. The total local BC per island can be supplied around 0.00857 gha per capita for the Gili Ayer Island, 0.20103 gha per capita for the Gili Meno Island, and 0.00344 gha per capita for the Gili Trawangan Island. They are influenced by population density. The BC values indicate a critical position, both per-unit-area or per-capita, which is spatially nearly 100 % of the needs supplied from outside the island, and demonstrate the use on the Gili Matra Region have exceeded the existing carrying capacity. The sustainable development aspects and land use management should be applied strictly to ensure the sustainability of natural resources, social and economic, as well as cotinuously consider the efforts and existing strategies of conservation. The export and import factors of bioproductivity should be considered in making long-term planning. Spatially, BC appraisal was applicable to illustrate the condition of an area on the small islands. The GIS based BC can give the information of pattern of changes and distributions, both spatial and temporal. However, the statistical data use is needed to get the value of BC per capita.