- Coastal and Marine Spatial Planning, Artificial Reefs, Biodiversity, Marine Ecology, Marine and Fisheries Policy, Ecosystem-Based Fisheries Management, and 12 moreClimate Impacts to Fisheries, Traditional Ecological Knowledge, Ecosystem Modelling, Illegal, Unreported and Unregulated (IUU) Fishing, Traditional Fisheries, Marine Conservation Planning, Marine Protected Areas, Coral Reefs, Marine Science and Technology, Indonesia, Reef Fish Biology, and Kepulauan Seribu Jakartaedit
The study was conducted to describe the seahorse species based on morphological and molecular characters. The pygmy seahorse in Panggang Island in Kepualuan Seribu was discovered in October 2011. The species was allegedly identified as... more
The study was conducted to describe the seahorse species based on morphological and molecular characters. The pygmy seahorse in Panggang Island in Kepualuan Seribu was discovered in October 2011. The species was allegedly identified as Hippocampus denise (Family: Syngnathidae) described by Lourie and Randall which published in 2003. The high similarity is based on small morphometric, orange-like color and its association with sea fan Annella sp. Their habitat is fairly shallow at a depth between 13-24 meters compared with their sister species observed in Bali, Nusa Tenggara, and Sulawesi. The phylogenetic analysis constructed with several sequence data of Hippocampus spp. from Genbank shows that sample collected from Panggang Island is in the same clade with Hippocampus denise with 100% bootstrap value. BLAST analysis result also showed a high maximum similar identity (>99%) with the species Hippocampus denise. The seahorse specimen described in this study has a common typology of habitat with Hippocampus denise. This study shows that genetic analysis to determine the Hippocampus denise can be carried out to support species recognition, especially for cryptic species such as Hippocampus spp. There are variations in morphometric and habitat depth levels, indicating local adaptation of pygmy seahorses to the Kepulauan Seribu reefs.
Research Interests:
Research Interests:
Research Interests:
Habitat perairan dangkal sangat penting dipetakan diantaranya karena: (1) mendukung perencanaan, manajemen, dan pengambilan keputusan tata ruang pemerintah; (2) mendukung dan mendesain Marine Protected Area (MPA); (3) melakukan program... more
Habitat perairan dangkal sangat penting dipetakan diantaranya karena: (1) mendukung perencanaan, manajemen, dan pengambilan keputusan tata ruang pemerintah; (2) mendukung dan mendesain Marine Protected Area (MPA); (3) melakukan program penelitian ilmiah yang bertujuan untuk menghasilkan pengetahuan tentang ekosistem bentik dan geologi dasar laut; (4) melakukan penilaian sumber daya dasar laut yang hidup dan tidak hidup untuk tujuan ekonomi dan menajemen, termasuk rancangan cadangan perikanan. Hingga saat ini belum ada standar untuk tingkat kedetailan peta tematik ekosistem pesisir khususnya habitat perairan dangkal sesuai kebutuhan pengelolaan wilayah pesisir dengan skema klasifikasi tertentu. Penelitian ini bertujuan untuk membandingkan akurasi peta hasil klasifikasi habitat perairan dangkal antara citra SPOT 6, Sentinel 2A, dan Landsat 8 menggunakan algoritma klasifikasi support vector machine. Lokasi penelitian terletak di Kepulauan Wakatobi, meliputi 2 lokasi yaitu Pulau Kapota ...
Research Interests:
There are many species of macroalga grow in marine ecosystem and potentially as raw material for bioethanol resource. Bioethanol is a conversion result of carbohydrate, one of macroalgae biomass content. The exploration of macroalgae... more
There are many species of macroalga grow in marine ecosystem and potentially as raw material for bioethanol resource. Bioethanol is a conversion result of carbohydrate, one of macroalgae biomass content. The exploration of macroalgae require information about growth rate ability to determine availability in the nature. This research analyze growth rate and carbohydrate content of marine macroalga Gelidium latifolium on cultivation using varied injection of carbon dioxide and aeration. The treatments were control (K), 2000 cc CO2 injection and aeration (P1), 3000 cc CO2 injection and aeration (P2), 2000 cc CO2 injection without aeration (P3), and 3000 cc CO2 injection without aeration (P4). Samples weight were 3 gram in early cultivation on laboratorium scale for 42 days observation. The results showed that the daily growth rate Gelidium latifolium during the study ranged from 0.02-1.06%. The highest daily growth rate was 1.06±0.14% (P2). Carbohydrate yield was 18.23% in early culti...
Research Interests:
Research Interests:
The study was conducted to describe the seahorse species based on morphological and molecular characters. The pygmy seahorse in Panggang Island in Kepualuan Seribu was discovered in October 2011. The species was allegedly identified as... more
The study was conducted to describe the seahorse species based on morphological and molecular characters. The pygmy seahorse in Panggang Island in Kepualuan Seribu was discovered in October 2011. The species was allegedly identified as Hippocampus denise (Family: Syngnathidae) described by Lourie and Randall which published in 2003. The high similarity is based on small morphometric, orange-like color and its association with sea fan Annella sp. Their habitat is fairly shallow at a depth between 13-24 meters compared with their sister species observed in Bali, Nusa Tenggara, and Sulawesi. The phylogenetic analysis constructed with several sequence data of Hippocampus spp. from Genbank shows that sample collected from Panggang Island is in the same clade with Hippocampus denise with 100% bootstrap value. BLAST analysis result also showed a high maximum similar identity (>99%) with the species Hippocampus denise. The seahorse specimen described in this study has a common typology o...
Research Interests:
ALEXANDRA MAHESWARI WASKITA. Coral Reef Seafloor Surface Complexity using Benthic Terrain Modeler and in situ Rugosity on Kelapa and Harapan Island, Seribu Islands, Jakarta. Supervised by SYAMSUL BAHRI AGUS and ADRIANI SUNUDDIN. High... more
ALEXANDRA MAHESWARI WASKITA. Coral Reef Seafloor Surface Complexity using Benthic Terrain Modeler and in situ Rugosity on Kelapa and Harapan Island, Seribu Islands, Jakarta. Supervised by SYAMSUL BAHRI AGUS and ADRIANI SUNUDDIN. High complexity of coral reef substrate can provide more ecological niche for diverse living organisms associated with coral reef ecosystem. This research aimed to identify the seafloor complexity using Benthic Terrain Modeler (BTM) towards in situ measurement (rugosity and benthic life forms) according to depth strata in Kelapa and Harapan Island. Field survey was conducted on 17-21 March 2015, for gathering bathymetric data set, ground checking WorldView-2 imagery, observing coral reef condition and measuring in situ rugosity at 6, 8 and 10 m. Among 5 survey sites, the highest seafloor complexity was observed at the East and West of Kelapa-Harapan Island reffering to BTM analysis, while highest in situ rugosity was resulted for the North and South. The inluence of in situ rugosity towards suface to planar area (BTM) was prominent at 8 meter depth. Benthic life forms affecting in situ complexity of the reef substrate were Dead Coral with Algae (6 meter), Hard Coral (8 meter) and abiotics (10 meter). Coral reef condition in Kelapa-Harapan islands was considered fair and dominated by Coral Massive, thus featured insignificant affecting complexity despite detail map of seafloor complexity resulted by BTM analysis at 2 meter grid.
Research Interests:
The existence of reef fish is certainly closely related to the existence of reefs coral because the ecosystem is a habitat for reef fish. Coral reefs are ecosystems that are commonly found on small islands in the tropics including the... more
The existence of reef fish is certainly closely related to the existence of reefs coral because the ecosystem is a habitat for reef fish. Coral reefs are ecosystems that are commonly found on small islands in the tropics including the Seribu Islands. The Seribu Islands are a group of 110 islands located off the coast of Jakarta and up to 80 kilometers north of the Java Sea. In this study, we examined the species distribution and diversity of reef fish species on two different distance location in Jakarta Bay using environmental DNA (eDNA) metabarcoding analysis from two sites which are Untung Jawa Island and Harapan Island. The 4L eDNA seawater samples were collected at a depth of 8-9 meters at each site and then analysis using specific primer (MiFish U) of 12S rRNA. Overall, the higher species richness was found on Harapan Island (52 species) followed by Untung Jawa Island (11 species). The Shannon-Wiener Index also showed Harapan Island has higher reef fish diversity based on thre...
Research Interests:
Irrawaddy dolphins (Orcaella brevirostris) are aquatic mammals with critically endangered status able to live in different water salinities habitats, like estuary, rivers and lakes. Banten Bay features estuarine area where rapid economic... more
Irrawaddy dolphins (Orcaella brevirostris) are aquatic mammals with critically endangered status able to live in different water salinities habitats, like estuary, rivers and lakes. Banten Bay features estuarine area where rapid economic development, contributed from industry, ports, mining and fisheries, takes place, and thus the presence of Irrawaddy dolphins in the area faces various envi-ronmental threats. This research aimed to study the distribution of Irrawaddy dolphins in Banten Bay and explore environmental factors threatening its life. Dolphins observation was conducted from January 2013-February 2014, using direct visual effort by team of observer and indirect ef-fort by local fishermen. Direct visual effort was performed on boat by three observers, with max-imum vessel speed 15 km/hour and total length of transect was 404 Km. Indirect visual effort com-prised of regular assessment by 32 local fishermen when they conducted capture fishing at two dif-ferent areas (South an...
Penelitian ini bertujuan untuk mengetahui struktur populasi rajungan (Portunus pelagicus) berdasarkan karakter morfometrik dan sebaran ukuran lebar karapas di perairan Pulau Lancang, Kepulauan Seribu. Survai dilakukan pada tanggal 23-27... more
Penelitian ini bertujuan untuk mengetahui struktur populasi rajungan (Portunus pelagicus) berdasarkan karakter morfometrik dan sebaran ukuran lebar karapas di perairan Pulau Lancang, Kepulauan Seribu. Survai dilakukan pada tanggal 23-27 Mei 2016 dengan mengukur parameter lingkungan perairan dan karakter morfometrik, serta berat tubuh dari contoh rajungan hasil tangkapan nelayan di 3 (tiga) stasiun di perairan utara Pulau Lancang, serta ditunjang data hasil tangkapan nelayan di timur dan selatan yang merupakan daerah tangkapan utama. Kondisi perairan di Pulau Lancang masih optimal bagi kehidupan dan pertumbuhan rajungan. Karakter morfometrik rajungan jantan dan betina yang berbeda nyata yakni CH (Carapace Height), PCR (Palm Chela on Right), dan PCL (Palm Chela on Left). Berdasarkan lebar karapasnya, rajungan yang umum tertangkap berada dalam fase dewasa dengan nilai modus berkisar antara 13,0-15,2 cm untuk jantan; sedangkan rajungan betina berkisar antara 13,5-15,3 cm. Kelas ukuran l...
Research Interests:
Shallow marine waters comprise diverse benthic types forming habitats for reef fish community, which important for the livelihood of coastal and small island inhabitants. Satellite imagery provide synoptic map of benthic habitat and... more
Shallow marine waters comprise diverse benthic types forming habitats for reef fish community, which important for the livelihood of coastal and small island inhabitants. Satellite imagery provide synoptic map of benthic habitat and further utilized to estimate reef fish stock. The objective of this research was to estimate reef fish stock in complex coral reef of Pulau Pari, by utilizing high resolution satellite imagery of the WorldView-2 in combination with field data such as visual census of reef fish. Field survey was conducted between May-August 2013 with 160 sampling points representing four sites (north, south, west, and east). The image was analyzed and grouped into five classes of benthic habitats i.e., live coral (LC), dead coral (DC), sand (Sa), seagrass (Sg), and mix (Mx) (combination seagrass+coral and seagrass+sand). The overall accuracy of benthic habitat map was 78%. Field survey revealed that the highest live coral cover (58%) was found at the north site with fish ...
Research Interests:
Research Interests:
In this study, two treatments (0.1 M and 0.5 M) of Ethyl Methane Sulfonate (EMS) were injected to increase Dunaliella sp. biomass. EMS concentration of 0.1 M and 0.5 M were added in the early stages of microalgae cultivation. Microalgae... more
In this study, two treatments (0.1 M and 0.5 M) of Ethyl Methane Sulfonate (EMS) were injected to increase Dunaliella sp. biomass. EMS concentration of 0.1 M and 0.5 M were added in the early stages of microalgae cultivation. Microalgae cell size at control treatment was 4.08 μm, while at EMS 0.1 M were 10.09 μm, and at EMS 0.5 M were 3.89 μm. These results show that the concentration of 0.1 M EMS had a cell size three times larger than the control cell size and had a higher percentage of fatty acids. Each treatment had different growth rate. EMS treatment had lower growth rate and antioxidant activity compared to the control treatment.
Research Interests:
AMELIA SALINA GUSTINI. Effect of Ethyl Methane Sulfonate (EMS) on Microalgae Species Dunaliella sp. Supervised by MUJIZAT KAWAROE and ADRIANI SUNUDDIN. Microalgae species Dunaliella sp. has great potential to be used as feed or food... more
AMELIA SALINA GUSTINI. Effect of Ethyl Methane Sulfonate (EMS) on Microalgae Species Dunaliella sp. Supervised by MUJIZAT KAWAROE and ADRIANI SUNUDDIN. Microalgae species Dunaliella sp. has great potential to be used as feed or food ingredients that can be used as an alternative commodities waters. Ethyl methane sulfonate (EMS) mutagenesis is a technique that is widely used to increase the production of microalgae. The purpose of this study was to analyze the effect of EMS on the species microalgae Dunaliella sp. The method used is by adding EMS concentration of 0.1 M and 0.5 M in the early stages of cultivation of microalgae. The analysis conducted to determine the effect of the addition of EMS is the observation cell size, cell density, proximate characteristics, characteristics of fatty acid and antioxidant activity of species microalgae Dunaliella sp. EMS concentration of 0.1 M has a cell size three times larger than the cell size control and have a percentage of higher fatty ac...
Research Interests:
Keperluan data dan informasi tentang habitat bentik sangat diperlukan untuk menjaga dan melestarikan ekosistem yang ada di perairan. Rusaknya habitat bentik dapat terjadi karena adanya aktifitas antropogenik dan bencana alam yang akan... more
Keperluan data dan informasi tentang habitat bentik sangat diperlukan untuk menjaga dan melestarikan ekosistem yang ada di perairan. Rusaknya habitat bentik dapat terjadi karena adanya aktifitas antropogenik dan bencana alam yang akan berimbas pada biota dan ekosistem yang ada disekitarnya, oleh karena itu untuk mengetahui dan memantau kondisi perairan dan habitat perairan dangkal perlu dilakukannya pemetaan. Penelitian ini bertujuan untuk menganalisis perubahan habitat dasar perairan laut dangkal di Karang Lebar, Kepulauan Seribu. Penelitian ini memanfaatkan citra multispektral resolusi tinggi QuickBird 2008 dan WordView-2 2018 untuk mendeteksi perubahan geospasial habitat bentik. Klasifikasi citra multispektral dilakukan dengan penerapan algoritma SVM (Support Vector Machine) dan transformasi DII (Depth Invariant Index) pada kedua citra yang digunakan. Jumlah kelas habitat bentik yang dihasilkan adalah sebanyak lima kelas yaitu terumbu karang, karang mati, padang lamun, pasir, dan...
Research Interests:
Research Interests:
Lancang Island is the center of fisheries of blue swimming crab in Kepulauan Seribu, Jakarta. Most of the inhabitants in this island are fishermen, and blue swimming crab is the main target without considering the stocks. One of the... more
Lancang Island is the center of fisheries of blue swimming crab in Kepulauan Seribu, Jakarta. Most of the inhabitants in this island are fishermen, and blue swimming crab is the main target without considering the stocks. One of the management effort of blue swimming crab by the government is the restriction of catchment size. To support the government policy and to maintain the population stocks and the sustainability of blue swimming crab around Lancang Island, we need another effort such us proposing area of Marine Sanctuary. The analysis of possibility area of the marine sanctuary was performed with simulated annealing using Marxan. The datasets were used in analysis included geomorphic model of habitat (sea floor), coastal ecosystems, blue swimming crab catches (sample size, location, and fishing pressure). The results obtained three possibility locations of the marine sanctuary, which is around of Laki Island, Southern, and Southeastern of Lancang Island. From the possibility locations, we recommend the first location as the Marine Sanctuary with considering the more diverse of features represented.
Research Interests:
Seagrass ecosystem and dugongs (Dugong dugon) are significant features of the northern coastal areas of Toli-toli and its adjacent small islands. Local communities are familiar with the dugongs for some reasons, including activities... more
Seagrass ecosystem and dugongs (Dugong dugon) are significant features of the northern coastal areas of Toli-toli and its adjacent small islands. Local communities are familiar with the dugongs for some reasons, including activities threatening its population. Therefore, Dugong and Seagrass Conservation Project-Indonesia initiated conservation of the seagrass ecosystem and the dugongs in Toli-toli. Local communities, with supports from local governments, are keen to develop tourism to gain economic benefit from the conservation. Accordingly, the project allowed some local leaders an opportunity to learn from the Seribu Islands, an extraordinary location of marine tourism. This paper describes their learning process and immediate responses expressing perspectives on how their tourism should be developed. After being introduced to some key features of Seribu Island, local concerns, problem solutions, and discussed a concept of sustainable tourism in a small workshop, they concluded th...
Research Interests:
Remote sensing technology can provide spatial information for mapping shallow water benthic habitat, a case study conducted on Sebaru Besar Island. The purpose of this study was to analyze mapping accuracy of shallow water benthic... more
Remote sensing technology can provide spatial information for mapping shallow water benthic habitat, a case study conducted on Sebaru Besar Island. The purpose of this study was to analyze mapping accuracy of shallow water benthic habitats usings WorldView 2 and SPOT 6 (201 imageries). The classification of multispectral images is carried out using the Depth Invariant Index (DII) transformation and by applying the Maximum Likelihood (MLH) algorithm to both satellite images. The number of benthic habitat classes produced are eight habitat classes from each image used. The results of the analysis show that the overall accuracy in Worldview 2 and SPOT 6 images is 61.29% and 51.61%. Results of Z-statistic comparison between Worldview-2 and SPOT-6 imagery was 1,04, means that the results did not differ significantly.
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Berangkat dari dua permasalahan utama yang akan dihadapi oleh seluruh penduduk di dunia pada masa mendatang, pertama kelangkaan akan persediaan bahan bakar dan kedua perubahan iklim global yang diakibatkan akumulasi emisi karbondioksida... more
Berangkat dari dua permasalahan utama yang akan dihadapi oleh seluruh penduduk di dunia pada masa mendatang, pertama kelangkaan akan persediaan bahan bakar dan kedua perubahan iklim global yang diakibatkan akumulasi emisi karbondioksida (CO2) hasil pembakaran ...
Research Interests: Humanities and Mikroalga
Research Interests:
Kompleksitas dasar perairan terumbu karang yang tinggi dapat menyediakan relung ekologi yang lebih bagi beragam makhluk hidup yang berasosiasi dengan ekosistem tersebut. Tujuan penelitian ini adalah mengidentifikasi kompleksitas dasar... more
Kompleksitas dasar perairan terumbu karang yang tinggi dapat menyediakan relung ekologi yang lebih bagi beragam makhluk hidup yang berasosiasi dengan ekosistem tersebut. Tujuan penelitian ini adalah mengidentifikasi kompleksitas dasar perairan terumbu karang menggunakan Benthic Terrain Modeler (BTM) pada ArcGIS 10.2 dan pengukuran in situ (rugosity dan keragaan life form) berdasarkan pembagian strata kedalaman di Perairan Pulau Kelapa dan Harapan. Survey lapang dilakukan pada 17-21 Maret 2015 untuk mengumpulkan data dan ground check batimetri, pengamatan terumbu karang, dan pengukuran in situ rugosity di 6, 8 dan 10 meter. Dari lima stasiun pengamatan, kompleksitas dasar perairan tertinggi ditemukan di Timur dan Barat berdasarkan surface to planar area BTM, sedangkan berdasarkan in situ rugosity di Utara dan Selatan. Nilai in situ rugosity berpengaruh terhadap surface to planar area (BTM) untuk kedalaman 8 meter. Life form terumbu yang memengaruhi kompleksitas dasar perairan in situ adalah Dead Coral with Algae (6 meter), Hard Coral (8 meter), dan abiotik (10 meter). Kondisi terumbu karang di Pulau Kelapa-Harapan tergolong sedang dengan life form dominan Coral Massive, sehingga kurang mampu membentuk dasar perairan yang kompleks walalupun hasil BTM mendefinisikan kompleksitas secara detail pada grid 2 meter.
Research Interests:
Detail and accurate information on reef geomorphology structure feature as one significant factor for ecosystem based management of coastal and small islands resources. Most applications of remote sensing and GIS in coral reef studies... more
Detail and accurate information on reef geomorphology structure feature as one significant factor for ecosystem based management of coastal and small islands resources. Most applications of remote sensing and GIS in coral reef studies were directed to map reef substratum and coverage of benthic habitats. The objective of this study was to analyze bathymetric dataset in order to classify reef geomorphology structure in Harapan-Kelapa Island, Kepulauan Seribu. Bathymetric data-set applied were, collated from WorldView-2 satellite and single-beam acoustic remote sensing using Mapsounder 585, examined using ArcGIS ® , Benthic Terrain Modeler (BTM) to classify seabed environment into several geomorphology classes. Stepwise calculations of broad and fine Bathymetric Position Index (BPI) were applied into each grid, surficial characteristics of the seabed were analyzed according to several sets of scale-factor, and finally structures of the seabed were classified into 13 geomorphic classes.
Research Interests:
Research Interests:
Pada tulisan ini disajikan komposisi, kelimpahan, dan sebaran komunitas ikan yang diamati secara in situ dari 2004-2008 di habitat terumbu buatan di Kepulauan Seribu. Modul terumbu buatan berbentuk piramid berongga terletak di lima... more
Pada tulisan ini disajikan komposisi, kelimpahan, dan sebaran komunitas ikan yang diamati secara in situ dari 2004-2008 di habitat terumbu buatan di Kepulauan Seribu. Modul terumbu buatan berbentuk piramid berongga terletak di lima stasiun pengamatan, yaitu Karang ...