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Introduction
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March 1981 - present
Education
October 1986 - March 1992
Publications
Publications (111)
Ikan Sidat hidup pada habitat perairan tawar (freshwater eel) yang bersifat katadromus, yaitu ikan Sidat dewasa hidup di perairan tawar (sungai, danau, perairan umum lainnya), bermigrasi jauh ke perairan laut lepas (oseanik) yang dalam untuk memijah. Pembahasan yang disajikan mengenai ikan Sidat tropis yang terdapat di peraiaran Indonesia dengan pe...
The coastal region of Jakarta Bay is susceptible to fish mortality and harmful algal blooms (HAB), often triggered by human activities and environmental changes. This study analyzed data from the Terra and Aqua MODIS satellites collected between 2004 and 2015 to measure chlorophyll-a levels indicative of algal blooms. The research aimed to identify...
In the face of rising the seas, relying solely on seawalls and other reinforced coastlines is unsustainable due to the high costs associated with their construction and upkeep and unforeseen effects on habitats. Restoring and conserving coastal habitats can be more affordable, long-term solutions for protecting the coast. Yet, basic knowledge about...
This paper explores the habitat characteristics of commercial tuna species based on daily oceanography parameters in the Eastern Indian Ocean Off Java-Bali Waters. Moreover, more research is needed combining the daily spatial distribution of oceanographic variables of surface and sub-surface data to analyse the habitat characteristics of large pela...
The occurrence and frequency of harmful algal blooms have become a significant problem in Indonesia's coastal waters since 1991. This article aims to thoroughly analyze the diversity of algal species involved in these harmful algal blooms (HABs). It highlights that some algae, such as toxic species, can produce dangerous toxins, while others, such...
Buku Pengelolaan Sumber Daya Perikanan Laut Berkelanjutan mengulas tentang pemanfaatan perikanan laut bagi generasi sekarang maupun bagi kepentingan generasi masa depan. Dengan kata lain, populasi ikan di laut harus dijaga agar tidak menurun akibat praktik penangkapan ikan yang dilakukan oleh manusia. Perikanan laut Indonesia memiliki potensi yang...
Buku Pengelolaan Sumber Daya Perikanan Laut Berkelanjutan mengulas tentang pemanfaatan perikanan laut bagi generasi sekarang maupun bagi kepentingan generasi masa depan. Dengan kata lain, populasi ikan di laut harus dijaga agar tidak menurun akibat praktik penangkapan ikan yang dilakukan oleh manusia. Perikanan laut Indonesia memiliki potensi yang...
Jakarta, the biggest city in Indonesia, has one district that consists of hundreds of islands that face severe climate hazards called the Seribu Islands complex. This study explores the evidence of local climate trends, the potential impact, and its policy intervention on Seribu Islands, which are classified as small island states and widely recogn...
Derawan Island, East Kalimantan Province, is located in the coral triangle, the center of mega biodiversity of the world's marine life, including reef fish. In this study, reef fish data were collected from 1994, 2003, and 2019 at six islands (Panjang, Derawan, Samama, Sangalaki, Kakaban, and Maratua) in Derawan Islands using the Underwater Visual...
The waters of the Aru Islands are part of the National Marine Protected Areas (MNR), and have extensive coral reefs with high biodiversity. The study was conducted in October 2016 at twelve stations to determine the status of coral cover, composition, and density of megabenthos and reef fishes. Coral reef data collection refers to the Underwater Ph...
Efforts to inventory macroalgae are urgently needed, mainly to provide information on its potential to produce sodium alginate. Recently, the availability of various satellite sensors and rapidly developing algorithms for processing satellite imagery can map macroalgae habitats more accurately. This study aims to map the benthic habitat and assess...
We review ichthyoplankton research history in Indonesia, which began when H.C. Delsman conducted studies on fish larvae and eggs in the northern Java region (1921–1938). The Danish 1929 eel expedition net sampling in Indonesian waters discovered an Anguilla bicolor bicolor spawning area off West Sumatra by collecting small leptocephali. After > 45...
Taka Bonerate waters are the third largest atolls in the world, rich in marine biodiversity, natural structures and aesthetics. Seagrass beds in these waters grow well on small islands, one of the coastal ecosystems that support biodiversity and have many benefits for humans in economic, social and cultural aspects. This study aimed to examine the...
The coral reef ecosystem plays an important role as a provider of ecosystem services and has various economic benefits to the coastal community. However, the coral reefs ecosystem continues to degrade by 19% globally. This degradation caused some coastal and archipelagic countries have developed methods of calculating coral reef health index, inclu...
"The sub-district of East Seram (SBT) is the oldest district in the East Seram Regency, Maluku Province, Indonesia. Ninety percent of this area is covered by the sea with 3 unique tropical coastal ecosystems, namely mangroves, seagrass, and coral reefs. This high productivity ecosystem provides various goods and environmental services in fisheries,...
The occurrences of phytoplankton bloom have recently increased in some coastal bays in Indonesia. Harmful algal blooms are now a significant problem for several coastal bays, which causes problems and economic losses to the fishing industry, harm to aquatic ecosystems, fish mortalities, and other living organisms. The negative impact also affects t...
Ambon Bay is a part of Ambon Island located at the Eastern Indonesia. The bay has an area of 124.5 km2, and consists of a shallow inner bay and a deeper outer bay. Ambon bay has a complete tropical ecosystem of coral reef ecosystem, sea grass area and mangrove ecosystem including natural resources which associated to those three ecosystems. Monitor...
Padang lamun merupakan ekosistem tumbuhan berbunga yang hidup di perairan laut dangkal. Padang lamun memiliki kemampuan untuk beradaptasi di perairan dengan salinitas tinggi. Padang lamun mempunyai peran ekologis yang sangat penting dan bernilai ekonomis tinggi. Padang lamun pada suatu perairan dapat dideteksi dengan pengukuran reflektansi gelomban...
Selat Sunda merupakan selat dengan kondisi fisik dinamis yang menjadi menjadi jalur sirkulasi massa air di perairan Indonesia petemuan Armondo dan Arlindo. Perairan ini didominasi dari Samudera Hindia dengan dinamika perairan yang sebagian besar dipengaruhi oleh angin musim, hal ini dapat memicu percampuran massa air. Penelitian ini bertujuan untuk...
Hartoni, Siregar VP, Wouthuyzen S, Agus SB. 2021. Object based classification of benthic habitat using Sentinel 2 imagery by applying with support vector machine and random forest algorithms in shallow waters of Kepulauan Seribu. Biodiversitas 23: 514-520. Benthic habitats have very high complexity and are home to many types of aquatic organisms. B...
The first disaster caused by harmful algal blooms in Lampung Bay was reported in 1991, where mass mortality of cultivated shrimp occurred in the brackish water ponds due to a Trichodesmium bloom. After this incident, the phenomenon reoccured in the following years continuously. Around nine species bloom makers in this bay are namely Pyrodinium sp.,...
Algal blooms have been occurring in Jakarta Bay for twenty years. However, recently the occurrence of algal blooms, their harmful effects, and their duration have been intensified. Algal blooms have devastated the marine environment, caused fish mortality, and been detrimental to local tourism, local fishing, and other industries along the coast. I...
The assessment of seagrass bed condition in Indonesia still refers to the Decree of the State Minister for the Environment (KMNLH) no. 200 of 2004, which considers only one variable, namely the percentage of seagrass cover. To assess the seagrass beds condition to be more in-depth and meaningful, it is necessary to consider the addition of several...
The Indonesian Seas are at the center of the Coral Triangle, which has the highest marine biodiversity in the world, and the region is under threat from climate change. Freshwater habitats in the region have a high number of anguillid eels compared to other regions of the world, but it is more difficult to capture marine eels to assess their biodiv...
The occurrence of algal bloom causes problems in many parts of the world, including in tropical Indonesian coastal waters. Harmful algal bloom events in Jakarta Bay have been increased since several years ago and causing massive fish kills which lead to economic losses in local fisheries, a decrease of water quality, and threat to people consuming...
Salinity is an important ocean parameter that greatly influences physical, chemical, and biological ocean properties and processes. Salinity combines with sea temperature and chlorophyll-a (Chl-a) that mostly sourced from remote sensing-based measurements can reveal ocean quality and supports fisheries. However, the satellite-derived Sea Surface Sa...
This review introduces practical mapping methods of seagrass beds by satellite remote sensing with ground-truthing surveys. It briefly explains optics for understanding how to map the seagrass beds under the sea. Ground truth data are necessarily used in classifying bottom habitats and evaluating classification accuracies. Ground-truthing surveys a...
Abstrak Kejadian pemutihan karang (coral bleaching) telah melanda hampir seluruh perairan Indonesia sedikitnya empat kali antara tahun 1982-2016. Dua kejadian terbaru (2010 dan 2016) telah dibahas mendalam, namun belum ada kajian rinci pada suatu lokasi yang spesifik, seperti di Taman Wisata Perairan (TWP) Pulau Pieh, perairan Padang, Sumatra Barat...
Over the past several years, a number of algal bloom incidents has been increasingly observed in Jakarta Bay. The increasing frequency of algal bloom incidents, and subsequent environmental impacts are a rising threat to the coastal resources, economy and public health. Eutrophication, tidal and climatic are the three processes that suspected to ha...
The coral bleaching event (CBE) which trigerred by increase in sea temperatures of 1-2˚C during El-Nino can make corals stressful or potentially dead. Many CBE research are conducted using sea temperature data measured through infrared thermal (TIR) satellite sensor. However, very few study use optical remote sensing data. This study aim to analyze...
Pieh Islands located at the Western Sumatra is one of the most affected area by massive coral bleaching during 2015-2016. The persistence warming or cooling of sea surface temperature due to regional climate phenomena such as El Niño Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) put coral reef into stress condition leading into coral bl...
Pieh Islands located at the Western Sumatra is one of the most affected areas by massive coral bleaching during 2015-2016. The persistence warming or cooling of sea surface temperature due to regional climate phenomena such as El Niño Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) put the coral reef into stress condition leading into cor...
Located in the Indonesian fisheries management area (WPP) 714, the Banda Sea has a high potential of fisheries resources. However, information about reef fish resources is limited. This study aims to assess the Banda Sea reef fish diversity, abundance, and stocks. The diversity, abundance, and density of three reef fish groups (indicator, target, a...
Tuna exploitation in the Banda Sea was started when the Indonesian government gave access to the Japanese fleet under the bilateral cooperation of the Banda Sea Agreement (BSA) in 1975-1980. Several studies were conducted afterward in revealing the magnitude of tuna resources in the Banda Sea. In this paper, we reviewed the tuna studies that were d...
2018) Sulawesi Island of north-central Indonesia is located in a region where at least 6 species of tropical anguillid eels are present, but the reproductive ecology and biodiversity of these eels in each area of the Indonesian archipelago remains poorly understood. Some information about these species was obtained from collections of their leptoce...
From April 1982 to October 1982, 393 specimens of oyster were collected near mangrove roots from Piru, Waisala, Wailale, Pelita Jaya (Seram Island) Ihamahu (Saparua Island), and Manipa Island for sondition factor analysis. The regression of meat yield (Y) on whole meat weight (X1) and condition factor (X2) could be expressed by the following equati...
strong>Mangrove Mapping of The Lease Islands, Maluku Province Using Multi-Temporal And Multi-Sensor Of Landsat Satellite Images. Mangrove mapping in the Lease Islands, Maluku Province has been done, but using only a single date satellite image. Therefore, it is difficult to know the dynamics of their changes. The aim of this study is to map mangrov...
The unique semi-enclosed Indian Ocean basin includes large Mascarene Plateau banks, offshore coral-reef islands, seasonal equatorial current jets, and cross-basin westward South Equatorial Current (SEC) flow, making it interesting for studying long larval-duration eel larvae (leptocephali) and regional eel biodiversity. Three surveys for leptocepha...
Severe coral bleaching events are always associated with El-Ninō phenomenon which caused a rise in ocean temperature between 1-2°C and that they potentially kill the corals worldwide. There were at least four severe coral bleaching events occurred in the Indonesian waters. This study aims to compare the coral bleaching events of the 2010 and 2016 a...
Abstrak
Pemetaan mangrove di Kepulauan Lease, Provinsi Maluku Tengah telah dilakukan, tetapi hanya menggunakan satu citra satelit, sehingga sulit melihat dinamika perubahannya. Tujuan kajian ini adalah memetakan mangrove lima tahunan (1985-2015) menggunakan citra satelit Landsat multisensor (MSS, TM, ETM+ dan OLI) dan data lapangan. Klasifikasi ter...
The purpose of this study are to introduce coastal resources conservation education and to examine perception of children aged 8-9 years (second grade) of the elementary school, SDN 01 morning Pari Island and also their parents in managing the sustainable of coatal living resources (SDHP) in the future. A qualitative approach in form of action rese...
Temperature is one of the principal controls on all physical, chemical and biological processes in the environment. Therefore, temperature data play an important role in earth resources management activities, including managing the effects of climate change. In this study, the sea surface temperatures (SSTs) of Weda Bay, Halmahera Island, Indonesia...
ABSTRACT
In the cruise, MR15-04 by R/V MIRAI, the samplings by the neuston net were performed in 23rd November to 14th December 2016 and three species of Halobates (H. germanus, H. mi-cans, H. sp) were used for the temperature tolerance experiments after the collection. The neuston net was towed three times (3 × 15 min) on the starboard side of R/V...
Penelitian tentang keberadaan stok ikan di perairan karang perairan pulau pada periode musim tenggara (Juni-Juli 2001). Daerah penelitian dibagi menjadi beberapa sub area yang mewakili perairan pantai utara dan timur. Tujuan penelitian diarahkan untuk mendapatkan keberadaan dan perkiraan kelimpahan sumber daya ikan dikawasan ini. Metode akustik seb...
Sumber daya ikan karang (SDIK) dari salah satu ekosistem tropika wilayah pesisir yang sangat produktif, namun hingga kini belum diketahui stoknya, sehingga menyebabkan pengelolaan berkelanjutan sulit dilakukan,meskipun kawasan konservasi perikanan (Daerah Perlindungan Laut, DPL)sudah banyak didirikan. Tujuan kajian ini adalah mengetahui keefektifan...
Abstract
Temperature is one of the principal controls on all physical, chemical and biological processes in the environment. Therefore, temperature data play an important role in earth resources management activities, including managing the effects of climate change. In this study, the sea surface temperatures (SSTs) of Weda Bay, Halmahera Island,...
Indonesia needs at least 1,100 tons of alginate per year for various food and non-food industries with a value of about 420,000 US Dollars. These needs are met through imports from aboard. The raw materials for alginate, namely brown seaweed (Phaeophyceae) are very abundant in Indonesian coastal zones, but its stock level is not yet known. This stu...
The Indonesian Seas in the center of the Coral Triangle have high marine biodiversity, and a unique area is Sulawesi Island that has the large semi-enclosed Tomini Bay, including the Togian Islands, formed within the island. A sampling survey for leptocephali was conducted in March 2010 at 48 stations in the southern Celebes Sea and in Tomini Bay t...
study of dugong and seagrass in Maluku
The objective of this research was to evaluate the accuracy of random forest classification rule using object based image analysis (OBIA) application (eCognition Developer) and the results were compared with common pixel-based classification algorithm (maximum likelihood/ML) for mangrove land cover mapping in Kembung River, Bengkalis Island, Indone...
