Beginer Subhan

• Doctor
• Secretary at Institut Pertanian Bogor (IPB University)

Sponges (Phylum Porifera) are a group of highly diverse, sessile, and filter-feeding basal metazoans, except spongillids. The majority of sponges are marine species that play an important role in benthic habitat by maintaining the stability of marine ecosystems through nutrient cycling, habitat provision, and bioerosion. However, marine sponges are...

Squat lobsters are organisms that have high abundance and can be found in almost all environmental conditions, one of which is dead coral. Due to its wide distribution and many systematic differences within the group, this group has a complex classification history. This lobster squat group can be accurately identified using molecular analysis comb...

Purpose A promising feature of marine sponges is the potential anticancer efficacy of their secondary metabolites. The objective of this study was to explore the anticancer activities of compounds from the fungal symbiont of Aaptos suberitoides on breast cancer cells. Methods In the present research, Aspergillus unguis, an endophytic fungal strain...

The urgency to identify biodiversity and other research has made eDNA methods more popular in recent years. This article aims to provide an overview of the eDNA methods for marine biodiversity research. We used bibliometrics to analyze marine biodiversity research using eDNA methods articles in the last twenty years from 2006 to 2024 in the Scopus...

Jansit AF, Zamani NP, Subhan B, Rachmawati R, Lalang. 2024. Analysis of environmental parameters supporting the abundance of Acanthaster planci in the Wakatobi and Sombori Marine Protected Areas, Sulawesi, Indonesia. Biodiversitas 25: 3672-3682. Wakatobi Islands and Sombori Islands offshore Sulawesi, Indonesia are two marine conservation areas wher...

Mangrove, Rhizophora mucronata, grows in the intertidal area, which contains much organic matter and varying salinity. The organic matter content is influenced by the bacterial community that inhabits the ecosystem, but information regarding the bacterial community, especially in the mangrove root system, is not widely available. There are several...

Most comparative studies assessing reef health focus on living hard coral cover as the key metric. In Indonesia, in situ monitoring of coral cover has been ongoing for over five decades. However, as monitoring data and research findings are predominantly published in the local language (Bahasa Indonesia), local data often escape global attention, r...

Coral reefs face threats from climate change and local pressures that lead to reductions in their physical structure, impacting biodiversity by limiting habitat availability. Despite many efforts to actively restore damaged reefs, few projects provide thorough evaluations of their success. This study measured the success of the “Reef Star” method a...

Ecological conditions are shifting due to increased anthropogenic activities along coastal areas. These activities are affecting the life cycle of aquatic organisms, especially phytoplankton. This study, conducted in the unique ecosystem of Hurun Bay Lampung, aims to analyze the composition and structure of phytoplankton communities in eutrophic wa...

The South Halmahera Islands feature a comprehensive marine coastal ecology. The ecosystems found were seagrass, mangrove and coral reef ecosystems. The components that sustain the existence of this ecosystem are employed equitably because of its geographical location on the equator. Mangrove ecosystems that provide benefits directly and indirectly...

Groupers are one of the most important and commercial fishes; many of the species are classified as Life Reef Fish Trade (LRFT). The number of grouper species in these locations may be more diverse than at other sites. Identifying the species number of a grouper is essential for mapping reef fitness. However, morphological identification of grouper...

Developing new chemical entities, pharmaceuticals, and drug leads frequently involves the exploration of natural sources. Pandanus odoratissimus (Pandanaceae), a well-known plant indigenous to Malaysia, has a history of application in Ayurvedic medicine to treat various ailments. This study aims to determine the antioxidant and anticancer propertie...

Over the past five decades, there has been a growing trend in the capture of kawakawa (Euthynnus affinis), which, alongside its potential to support small-scale commercial fisheries, highlights its significance.However, there is inadequate data on this species for suitable management and conservation status. This study aimed to investigate the gene...

Sponges are animals that can produce bioactive compounds. This use needs to be accompanied by sponge cultivation techniques to avoid decreasing the availability of sponge colonies in nature. This study aims to determine the growth rate and survival rate of sponges Aaptos suberitoides and Petrosia nigricans in a recirculation system and to determine...

Anthropogenic and environmental stressors damage the structure and function of coral reefs. Monitoring data is important because it allows scientists to detect changes that are of interest for managers and policymakers. This study aims to examine the benthic component (abiotic and biotic) and determine coral life-history composition at different re...

Diverse life forms found on coral reefs indicate resilience to environmental change, sustaining marine biodiversity and ensuring the stability of the coastal community’s ecosystems. This study investigates the relationship between sea currents and the life forms of coral reefs in Indonesia and focuses on two primary locations: Kei Besar Island, Mal...

Highlight Research Bacteria from mangrove sediment have been identified, and environmental parameters have been analyzed. The relationship between rhizosphere bacteria and the environment has been analyzed. The distribution and abundance of rhizosphere bacteria differ between Kuala Langsa and Telaga Tujuh. The diversity and abundance of rhizosphere...

Tropical marine lakes are small land-locked marine waterbodies occurring in karstic coastal areas. During biodiversity surveys in 12 marine lakes in Raja Ampat, Southwest Papua province, Indonesia, we recorded at least 37 species belonging to 29 genera of hard corals. Their observed associated symbiont fauna consisted of bivalve molluscs and polych...

Pemuteran is well-known for its community-based coral reef conservation activities utilising Biorock technology, through the application of low voltage electricity. The main objective of this research is to assess the condition of coral reefs and fish communities within the Biorock area in Pemuteran, Bali. Data collection was implemented in June 20...

A popular tourist destination known for its colorful coral reefs is Kaliage Island, part of the Seribu Archipelago. The UVC (Underwater Visual Census) method was used in a recent study to examine reef fishes’ trophic levels, ecological roles, and community structure. Dominance, evenness, and diversity indices were used to investigate community stru...

The selection of specific bioinformatic pipelines to analyse Next Generation Sequencing (NGS) data is instrumental for generating accurate biological inferences; users should understand the limitations of the pipelines and incorporate existing biodiversity information to evaluate results. Pipelines that maximize the coverage and precision of taxono...

Indonesia is an archipelagic country that provides important nesting and foraging habitats for the critically endangered hawksbill turtle (Eretmochelys imbricata). Although many studies have investigated this migratory species globally, there is a lack of information on the population structure and geographic boundary of this species in Indonesia....

Coral diseases are caused by bacteria, fungi, or viruses due to stress or compromised health in the aquatic environment. This study identifies the abundance of coral diseases and compromised health in Kei Besar Island, Southeast Maluku. Data was collected using the Belt Transect method at six locations. 224 hard coral colonies were affected by elev...

Monitoring coral reef communities remains a scientific cornerstone of marine biodiversity conservation and management. Environmental DNA (eDNA) has recently emerged as a passive detection tool to enumerate organisms in dynamic marine systems. The utility of eDNA to provide meaningful results for coral reef conservation and management in Indonesia,...

Pneumonia is a respiratory infection caused by microorganisms including bacteria. Current treatment with antibiotics leads to bacterial resistance. An alternative treatment involves utilizing coastal plants. In this study, five parts of eleven coastal plants underwent phytochemicals screening and investigated for their antibacterial activity agains...

The Halmahera Walking Shark (Hemiscyllium halmahera) is an endemic fish in the Halmahera Sea. This species is distributed and found in the Kao Bay sea. The International Union for Conservation of Nature (IUCN) data shows that the Halmahera Walking Shark is in the Near Threatened status. Protection is carried out to protect the population, therefore...

Wildlife monitoring in tropical rainforests poses additional challenges due to species often being elusive, cryptic, faintly colored, and preferring concealable, or difficult to access habitats. Unmanned aerial vehicles (UAVs) prove promising for wildlife surveys in different ecosystems in tropical forests and can be crucial in conserving inaccessi...

Ternate Island is located on the North Maluku Sea. The North Maluku Sea region includes the Wallacea area and the world’s coral triangle. One of the organisms commonly found in this sea is red algae. Study aimed to determine the red algae species by phylogenetic tree analysis based on the rbcL gene as a DNA marker. The preserved red algae tissue sa...

Mackerel is a small pelagic fish that has potential value and can be found throughout Indonesian waters. It is feared that high exploration activities will have an impact on the population. Sampling was carried out at the fish landing port and fish auction place (Bacan, Morotai and Ternate). The sample was photographed and the 3 cm swimming fin was...

This poster explains about genetic sponges and sponge types of Raja Ampat waters. There are 4 types of sponges found with the type of megasklera monoaxon spicula.

Novriansyah A, Huhn M, Wicaksono H, Senen B, Subhan B, Fenner D, Madduooa H, Dias PJ. 2023. First observations of coral spawning at the Banda Islands, Maluku, Indonesia. Biodiversitas 24: 6082-6091. Due to their high diversity and productivity, their socio-economic value to coastal communities and their crucial role in coastal protection, coral ree...

As a biological parameter of the aquatic ecosystem, plankton has various species and forms a specific community for each water. Plankton can characterize the water’s condition through its species richness. Both phytoplankton and zooplankton were observed in this research to determine the biodiversity. Plankton samples were collected using a plankto...

North Lombok Waters have a fairly high level of diversity. Mesophotic Coral Ecosystems (MCEs) are light-dependent coral reef communities ranging from 30-40 meters and extending to the bottom of the photic zone to a depth of 150 meters. Sponges are the main constituent of MCEs that have many benefits, but their existence is poorly understood. This s...

Morotai Island is under the influence of plates, Indonesian Throughflow, Halmahera Eddy, New Guinea Coastal Undercurrent (NGCUC) and is located in the coral reef triangle. Halmahera walking shark ( Hemiscyllium halmahera ) was found in the Morotai Island Sea. The aim was to study the morphometric and length-weight relationship of H. halmahera on Mo...

Kegiatan rehabilitasi terumbu karang sudah dilakukan di Indonesia, selama 20 tahun terakhir lebih dari 500 kegiatan sudah dilakukan tetapi belum banyak yang berhasil dan berkelanjutan. Kegiatan – kegiatan ini sebagian besar dilakukan di kawasan konservasi laut yang tersebar di seluruh Indonesia. Pada tulisan ini akan membahas tentang pentingnya pro...

Pemerintah Indonesia perlu mendorong penggunaan teknologi environmental DNA (eDNA) sebagai metode utama dalam pemantauan biodiversitas di Kawasan Konservasi Laut (KKL) guna mengatasi tantangan logistik di wilayah yang luas dan beragam. Diperlukan investasi dalam pengembangan database eDNA nasional yang mencakup sekuens referensi spesies laut Indone...

Kuncoro I, Zamani NP, Subhan B, Cahyani NKD. 2023. eDNA assessment of scleractinian diversity and distribution in Lemukutan Island, Indonesia. Biodiversitas 24: 4185-4191. Coral reefs are one of the most degraded and endangered tropical marine ecosystems. The study of biodiversity and its distribution is significant for biomonitoring. Lemukutan is...

Coral reefs are critical habitats in the marine environment. Human impact on corals and other associated organisms might lead to degradation. Sponges are the dominant coral-associated organism on most reefs. Sponges occupy many important habitats, hence, studying the spatial patterns of sponges is crucial. This study aimed to asses hard coral cover...

Gaining extensive knowledge of prey sources is an essential approach for understanding trophic structure and relationships, especially in highly diverse coral reef ecosystems. Groupers are a major Asian reef fish commodity, making it important to study grouper prey and the trophic relations involved. The wide distribution of groupers across differe...

Domas coastal waters, located east of Banten Bay, have an enormous potential for fisheries resources closely related to the presence of plankton in the area. This study was carried out for 6 months, from August 2021 to January 2022, to examine the biodiversity and community structure of zooplankton in the Domas coastal waters. Sampling was carried...

Highlight Research The very first attempt to investigated and revealing biodiversity of crustacean crab in coral reef ecosystem at Tidung Island, Indonesia Conservation area (Tidung Kecil) has more abundant crab species than tourism area (Tidung Besar). A microhabitat that suffers anthropogenic pressure may alter the composition of crustacean biodi...

Penyelaman ilmiah telah berlangsung selama puluhan tahun di Indonesia. Salah satu kegiatan penyelaman ilmiah, yaitu melakukan pemantauan terhadap ekosistem terumbu karang atau yang lebih dikenal dengan metodologi penilaian kondisi terumbu karang. Luasnya perairan Indonesia menjadi tantangan untuk melakukan pemantauan terumbu karang secara bersama-s...

Scientific diving has been going on for decades in Indonesia. One of the scientific diving activities is monitoring coral reef ecosystems, better known as the coral reef condition assessment methodology. However, the vastness of Indonesia’s waters is challenging to monitor coral reefs together. Therefore, one coral reef monitoring strategy is creat...

Coral reefs are critical ecosystems for coastal and marine biota interaction. The coral reef ecosystem on Kelapa Dua, Seribu Islands, is in poor condition with a low live coral cover. This condition decreases fishery productivity, as the coral reef is the habitat and nursery ground for fish and marine biota. The problem in this research is how to i...

Coral reef degradation in Indonesia is increasingly alarming. For this reason, efforts are needed to rehabilitate coral reef ecosystems. In this study, we explained the effect of coral transplantation on the structure of coral fish communities in the waters of Harapan Island, precisely on Rosa and Pamegaran Island, Seribu Archipelago National Park....

Anthropogenic activities in Cengkok coastal waters have a potential to pollute the environment with contaminants such as heavy metals. The aim of this study is to determine both the content and accumulation of heavy metals (Pb and Hg) in greenback mullets (Planiliza subviridis) in Cengkok coastal waters, Banten Bay. Fish samples were taken for six...

Banten Bay represents waters bordering the areas of marine tourism, industries, settlements, and agriculture. The wastes resulting from those activities can harm the aquatic environment. This study aims to analyze the bioaccumulation of heavy metals (Pb and Hg) in threadfin bream (Nemipterus sp.) in Panjang Island, Banten Bay, Banten Province. Samp...

Banten Bay has several islands which also have coral reefs around them. This study was carried out from October 2021-March 2022 at 9 observation points spread across the islands. This study aims to determine the health of coral reefs and the distribution of soft coral abundance in the three islands. Coral reef data was taken through diving at the d...

The Coral Triangle encompasses nearly 30% of the world's coral reefs and is widely considered the epicenter of marine biodiversity. Destructive fishing practices and natural disturbances common to this region damage reefs leaving behind fields of coral rubble. While the impacts of disturbances in these ecosystems are well documented on metazoans, w...

Background Dinoflagellates of family Symbiodiniaceae are important to coral reef ecosystems because of their contribution to coral health and growth; however, only a few studies have investigated the function and distribution of Symbiodiniaceae in Indonesia. Understanding the distribution of different kinds of Symbiodiniaceae can improve forecastin...

Environmental DNA (eDNA) methods are increasingly viewed as alternate or complementary approaches to conventional capture-based surveys for marine conservation and fisheries management purposes, especially at large spatial scales in mega-biodiversity regions such as Indonesia. Decapod crustacean distribution and diversity across Indonesia are still...

Duncanopsammia axifuga (Scleractinia: Dendrophylliidae) is reported for the first time from Indonesia. A population was found in 5-m deep, murky water on a sediment-rich, inshore reef at Bird’s Head Peninsula, West Papua. Some corals were attached to dead coral and others were loose fragments living on sediment. One attached specimen was observed t...

Soft corals of the genus Clavularia (Blainville 1830) have complex and difficult to distinguish morphological characteristics, making them rather difficult to identify. A paucity of information exists for Indonesian coral reefs, a complex biogeographic region at the confluence of the Pacific and Indian Ocean that covers an extensive geographic area...

Banten Bay has several islands which also have coral reefs around them. These island are also a tourist destination for the people around the Banten Bay. This study was carried out from October 2021-March 2022 at 9 observation points spread across the islands. This study aims to determine the health of coral reefs and the distribution of soft cor...

Banten Bay represents waters bordering the areas of marine tourism, industries, settlements, and agriculture. The wastes resulting from those activities can harm the aquatic environment. This study aims to analyze the bioaccumulation of heavy metals (Pb and Hg) in threadfin bream (Nemipterus sp.) caught in Panjang Island and surounding area, Banten...

Anthropogenic activities in Cengkok coastal waters have a potential to pollute the environment with contaminants such as heavy metals. The aim of this study is to determine both the content and accumulation of heavy metals (Pb and Hg) in greenback mullets (Planiliza subviridis) in Cengkok coastal waters, Banten Bay. Fish samples were taken for six...

The sea waters around Panjang and Pamujan Besar Islands (Banten Bay) are fishing ground and recreation areas for local peoples around the bay. The research on the macrozoobenthos community structure was carried out in May - July 2019 at 6 station points scattered around those islands. This study aims to evaluate a macrozoobenthos community structur...

Karangantu coastal waters is one of the coastal areas that has a potential to develop ecotourism based on mangrove ecosystems. This study aims to analyze the potential of the mangrove ecosystem for ecotourism development. This study was conducted in October 2020 and February to March 2021 in the Karangantu mangrove tourism area of Banten Bay. Data...

The damage to the Indonesian coral reef ecosystems is increasingly alarming. Thus, efforts are needed to rehabilitate the coral reef ecosystems. The present study explained the effect of coral transplantation on the structure of coral fish communities in the waters of Harapan Island (Rosa and Pamegaran Islands), Seribu Archipelago National Park. Th...

Mobula alfredi is a critically endangered species of the Mobulidae family that can be found in the subtropics, including Indonesia. However, population connectedness, which is critical for managing and conserving populations, was previously unknown. Based on 614-bp of cytochrome oxidase 1 (COI) mtDNA, this study looked into the genetic structure an...

Population genetics studies genetic variation involving gene and allele frequencies in spatial and temporal space. Genetic information can be used in conservation management through identification of phylogenetic tree reconstructions, genetic distance, genetic structure, and haplotype connectivity to maintain population existence. The samples used...

Coral habitats; however, this is not easy. Strong currents, temperature fluctuations, competition with other organisms, predators, and food availability are problems in coral transplantation. The obstacles are eliminated by transplanting coral under controlled environmental conditions. This study was aimed to determine the growth of transplanted so...

The condition of coral reefs in Indonesia is declining, one of the efforts to restore the condition is to carry out coral transplants. The method used in this research is fragmentation transplantation. This study was conducted to determine the effect of fragmentation (cutting) on coral species Lobophyllia hemprichii from F1 parent transplants carri...

This research is located at Sop Island, Sorong, West Papua. The data was collected using the Belt Transect method, stretching a line for 50 meters with a width of vision for 2.5 meters to the left and 2.5 meters to the right. The depth of the transect is 5 meters, recorded all genera from Family Fungiidae. Five genera were found on The Sop Island,...

Characteristics of Waters During Transitional Season, Senimba Bay, Batam Indonesia. Senimba Bay is a water area in Batam City. It is necessary to develop the waters of Senimba Bay due to its location around the bay, which is still not arranged. Development such as changes in sea transportation lines and structuring the bay area requires Hidro-ocean...

The first occurrence of the cyanobacteriosponge Terpios hoshinota was reported from coral reefs in Guam in 1973, but was only formally described in 1993. Since then, the invasive behavior of this encrusting, coral-killing sponge has been observed in many coral reefs in the West Pacific. From 2015, its occurrence has expanded westward to the Indian...

Clavularia inflata was first described from Ternate Island, Indonesia in 1896 and later reported appeared from Japan and Taiwan in 1953.Clavularia (Blainville 1830) soft corals exhibit complex morphological traits that are difficult to differentiate, thus complicating their identification. DNA barcoding has been envisioned and actively pushed as a...

Coral reef structural form is widely considered a key factor with respect to the availability of shelter and foraging spaces for fishes and invertebrates. However, anthropogenic stressors are damaging coral reefs and the structural complexity they provide for millions of marine species. It is therefore important to assess the effect of coral reef s...

The coral growth rate is affected by several ecological conditions, which could lead to enhancement or deceleration. Good marine habitat and water conditions would escalate coral fragment growth rate on rehabilitation sites. This study was assessed to determine the coral growth rate transplanted on artificial reef-building for rehabilitation purpos...

Indonesia is referred as the second largest contributor of marine debris in the world after China, with an estimated 0.48-1.29 million metric tons per year. High anthropogenic activities from locals and tourists can produce large marine debris and impact the seagrass ecosystem. This research aimed to identify marine debris in the habitat of seagras...

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 kilomet...

Indonesia, as a country having a unique sea lane known as the Indonesian Archipelagic Sea Lanes (ASLs), has become one of the busiest countries in the world with varied shipping activities. These actions have the ability to facilitate the transmission of species (bio-invasion). Until recently, the number of global introduced species has increased,...

Environmental DNA or eDNA is a powerful method to uncover marine organisms in the seawaters. Furthermore, many marine species are difficult to determine in the sea waters because of their rare existence based on the visual census. In this study, we implemented environmental DNA to investigate the presence of the endangered species of narrow sawfish...

CCMRS-IPB conducted coral reef rehabilitation at damaged coral reefs around Nyamuk Island. Those artificial reef buildings for rehabilitation gave shelter spaces for reef fish. This research aims to calculate the effect of coral reef-building, which enhances rugosity to the reef fish diversity around the rehabilitation sites. The study was conducte...

Blue swimming crab fishery activities very often do not put into account the environmental condition. Coral reef, as one of the blue swimming crab habitats, can be affected by these activities. This study aims to determine the effect of blue swimming crab fisheries on coral health in Mandangin Island, East Java, Indonesia. Data collection points ar...

Coral disease is one of the causes of the decline in the condition of coral reef ecosystems. This study aims to measure coral health based on the abundance and prevalence of coral health categories. The research was conducted in the Pari Island Cluster, Seribu Islands at four stations. The Belt Transect method with 2 × 100 meters was used to calcul...

Nudibranch has high species diversity with complex morphological characters and is challenging to identify at the species level. The lack of knowledge about nudibranchs makes it difficult to identify conventionally using morphological characters. This study aims to identify nudibranchs at the species level using the DNA barcoding method from the mi...

Phyllidiella pustulosa are brightly coloured gastropod molluscs frequently found in coral reefs of the tropical Indo-Pacific. Phyllidiella pustulosa is widely distributed in Indonesia, such as Seribu Island, North Sulawesi, West Papua, and Halmahera. Based on the genetic characteristics of an individual’s DNA sequence, differences between species c...

Seagrass ecosystems are located between mangrove ecosystems and coral reefs. Seagrass ecosystems are habitats and foraging area for many marine organisms. Eco-biological cycles in seagrass ecosystems are important for maintaining populations of many organisms. Seagrass at Hiri Island is distributed horizontally along the coast. This island is also...