Indo Pacific Journal of Ocean Life
type: channel
description: Encourages submission of manuscripts dealing with all aspects of maritime and marine resources in estuaries, coastal zones, continental shelf, the seas and oceans, including marine biodiversity and fisheries resources, biochemistry, physiology, behaviour, and genetics of marine life, socio-economic and cultural aspects, conservation and management, as well as biogeochemistry, marine pollution, and climate change.
publisher: Smujo International
language: en
publication name: Indo Pacific Journal of Ocean Life
issn: 2775-1961
items: Photo-physiological thermal stress responses of Echinopora forskaliana from shaded and light-exposed environments around Rodrigues Island, Western Indian Ocean
items: Aggregation behavior of suspension-feeding sea cucumbers in a tropical lagoon system of Rodrigues Island, Western Indian Ocean
items: Coral diseases and associated photosynthetic responses around Rodrigues Island, Western Indian Ocean
items: Spatio-temporal density patterns of corallivorous invertebrates around Rodrigues Island, Western Indian Ocean
items: Herbivorous fish biomass and benthic composition around Rodrigues Island, Western Indian Ocean
items: Structure and composition of mollusks (Gastropoda and Bivalvia) in the coastal karstic ecosystems of Gunung Kidul, Yogyakarta, Indonesia
items: Short Communication: Spatial distribution and diversity of intertidal crustaceans in karstic beaches of southern Java, Indonesia
items: Review: Bioactive compounds and therapeutic potentials of coral reef organisms
items: Plastic waste characteristics and community responses in mangrove-influenced coastal villages of Kampung Laut, Cilacap, Indonesia
items: Diversity of soil macrofauna in the coastal karst area of Gunung Sewu, Paranggupito Sub-district, Wonogiri District, Indonesia
items: Structure and composition of Ophiuroidea (Echinodermata) at three beaches in Gunungkidul, Yogyakarta, Indonesia
items: Potential and strategy for ecotourism development in the coastal area of Paranggupito Sub-district, Wonogiri District, Indonesia
items: Mangrove dynamics on the Madura Island coast, Indonesia, analyzed through NDVI: Balancing degradation and restoration efforts
items: Water resource sustainability in the coastal-karst area of Paranggupito Sub-district, Wonogiri, Indonesia
items: Species diversity of mangrove at tree and pole level in Sampang and Pamekasan Districts, Madura Island, Indonesia
items: Review: The nutritional value and health benefits of kawakawa (Euthynnus affinis)
items: Diversity and composition of Crustacean and Mollusk in mangrove area in Sampang and Pamekasan Districts, Madura Island, Indonesia
items: Diversity of reef fish in the littoral zone of the south coast of Gunungkidul District, Yogyakarta, Indonesia
items: Analysis of mangrove forest ecosystem sustainable management by coastal communities in Sampang District, Madura Island, Indonesia
items: Diversity and first record of Porifera (sponges) from Gujarat Coast, India
items: Diversity of waterbirds around Ekasoghi mangrove area, Sumenep, with the first record of Australian tern (Gelochelidon macrotarsa) from Madura Island, Indonesia
items: Enabling conditions toward the rehabilitation and preservation of mangrove ecosystem in Sampang, Madura Island, Indonesia
items: Short Communication: Efficiency economic of whiteleg shrimp Litopenaeus vannamei (Boone 1931) cultivation with a household scale biofloc system
items: Diversity, density and photo-physiology of micro-phytoplankton from degraded and non-degraded reefs around Rodrigues Island, Western Indian Ocean
items: Photo-physiological responses and thermal tolerance of regionally endemic/rare and morphologically different corals of the Western Indian Ocean
items: The red coralline alga Hydrolithon onkodes, an attractor of coral larvae, is photosynthetically more susceptible to thermal stress than Lithophyllum incrustans
items: Antioxidant and photo-physiological acclimatisation in tropical macroalgae at sites with distinct nutrient levels
items: Assessment of physicochemical parameters and heavy metals contamination in Korle and Kpeshie Lagoons, Ghana
items: Litter assessment at the Sakumono and La Pleasure coastal areas, Ghana
items: Concentration of heavy metal in sediment, water, and fish from Ankobra and Tano River Estuaries, Ghana

Photo-physiological thermal stress responses of Echinopora forskaliana from shaded and light-exposed environments around Rodrigues Island, Western Indian Ocean
type: item
description: Abstract. Jeetun S, Ricot M, Jogee SY, Taleb-Hossenkhan N, Ramah S, Perrine JS, Kaullysing D, Bhagooli R. 2025. Photo-physiological thermal stress responses of Echinopora forskaliana from shaded and light-exposed environments around Rodrigues Island, Western Indian Ocean. Indo Pac J Ocean Life 9: 111-123. Corals in shaded and exposed habitats experience variable heat and light stresses, impacting their photosynthetic performance and resilience to thermal stress. This study examined bleaching, photosynthetic performance, and growth patterns of Echinopora forskaliana (Milne Edwards & Haime, 1849) in shaded and exposed environments at St. François, Rodrigues Island. Bleaching prevalence and colony sizes were recorded using three belt transects. Field observations in 2018 revealed healthy-looking colonies in shaded habitats, while colonies in exposed habitats showed bleaching. Responses of healthy-looking E. forskaliana colonies from both habitats were assessed under exposure to 29 and 32°C. Effective quantum yield at Photosystem II (?PSII), maximum relative electron transport rate (rETRmax), and maximum non-photochemical quenching (NPQmax) were measured at the start, and after 3 and 12 hours of exposure. Field bleaching surveys showed that 93.3% of exposed colonies were pale/bleached, while shaded ones remained unaffected and were significantly larger (42.1±9.0 cm). Thermal stress at 32°C and 206.5±27.0 Lux caused steep declines in ?PSII (99.7%), rETRmax (93.5%), and NPQmax (97.37%) in exposed colonies after 12 hours, while shaded colonies maintained their photosynthetic performance. These findings suggest that shaded habitats may act as refugia for corals under climate-induced thermal stress, highlighting the need for adaptive conservation and management approaches. The urgency of adaptive conservation and management approaches is underscored, as these findings highlight the need for immediate action to protect these crucial habitats.
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: SRUTI JEETUN
creator: MELANIE RICOT
creator: SHAKEEL YAVAN JOGEE
creator: NAWSHEEN TALEB-HOSSENKHAN
creator: SUNDY RAMAH
creator: JEAN SYLVIO PERRINE
creator: DEEPEEKA KAULLYSING
creator: RANJEET BHAGOOLI
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-10-21
publication date: 2025-10-21

Aggregation behavior of suspension-feeding sea cucumbers in a tropical lagoon system of Rodrigues Island, Western Indian Ocean
type: item
description: Abstract. Gerzer F, Kaullysing D, Ramah S, Bhagooli R. 2025. Aggregation behavior of suspension-feeding sea cucumbers in a tropical lagoon system of Rodrigues Island, Western Indian Ocean. Indo Pac J Ocean Life 9: 124-132. Suspension-feeding holothurians exhibit unique behavioral and ecological adaptations when compared to deposit-feeding sea cucumbers. Their population drivers, habitat preferences, and niche partitioning, however, remain poorly understood. In this study, we document a high-density aggregation of Holothuria cinerascens (Brandt, 1835) (16.9 ± 3.11 ind/m²), which was substantially higher than the coexisting deposit-feeders' density (Holothuria atra Jaeger, 1833: 0.8 ± 0.9 ind/m²; Stichopus horrens Selenka, 1867: 0.3 ± 0.5 ind/m²). The study site in Torrent, located on Rodrigues Island's east coast, is characterized by sandy flats and occasional limestone structures that clearly indicate habitat partitioning. The limestone structure along the transect showed 100% niche occupation by H. cinerascens, and the sandy flat had a composition of 72.7% H. atra and 27.3% S. horrens. The limestone's structural complexity provides a variety of crevices, access to water flow, predatory refuge, and attachment opportunities, ultimately creating a suitable habitat for suspension-feeding holothurians. Additionally, trade wind-generated hydrodynamics on Rodrigues Island likely enhance suspended nutrient flux on the east coast, favoring suspension-feeding plasticity of the sometimes trophically facultative H. cinerascens. These findings give insights into holothurian niche specialization, driven by microhabitat structure, hydrodynamic conditions, and trophic plasticity, delivering possible implications on conservation and mariculture strategies, as well as enhancing the overall understanding of holothurian ecology.
subject: Articles
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subject: Array
  topic: keywords
creator: FELIX GERZER
creator: DEEPEEKA KAULLYSING
creator: SUNDY RAMAH
creator: RANJEET BHAGOOLI
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-11-27
publication date: 2025-11-27

Coral diseases and associated photosynthetic responses around Rodrigues Island, Western Indian Ocean
type: item
description: Abstract. Jogee SY, Anasamy M, Jeetun S, Ricot M, Ramkalam M, Korimbocus A, Kaullysing D, Nascimento B, Casareto BE, Suzuki Y, Wijayanti DP, Bhagooli R. 2025. Coral diseases and associated photosynthetic responses around Rodrigues Island, Western Indian Ocean. Indo Pac J Ocean Life 9: 100-110. The coral reefs of Rodrigues Island are among the most biodiverse ecosystems in the Western Indian Ocean (WIO) but are increasingly threatened by coral diseases. While disease prevalence has been documented, its physiological impacts remain poorly understood. This study assessed the photo-physiological responses of four reef-building coral species (Montipora sp., Platygyra sp., Acropora sp., Favia sp.) affected by Black Band Disease (BBD), Skeletal Eroding Band (SEB), White Band (WB), and White Syndrome (WS). Coral fragments containing both diseased and visually healthy tissues were collected from four sites and analyzed in situ using a Junior-Pulse-Amplitude-Modulated (PAM) fluorometer. Parameters measured included maximum quantum yield (Fv/Fm), maximum relative electron transport rate (rETRmax), maximum non-photochemical quenching (NPQmax), initial slope before saturation (?), post-saturation slope (?), and minimum saturating irradiance (Ik), derived from rapid light curves. Diseased tissues generally exhibited reduced photosynthetic performance, with BBD in Montipora sp. and SEB in Favia sp. showing the most pronounced declines in Fv/Fm and ?, along with altered ? and NPQmax values. In contrast, WB and WS had limited or non-significant effects on the measured parameters. These results highlight disease and species-specific vulnerabilities, indicating that some coral-algal symbioses are more susceptible to functional impairment. In the context of climate change, disease-driven stress could accelerate reef degradation, especially in isolated islands like Rodrigues. Integrating photo-physiological monitoring into routine reef health surveys can enhance early detection of funct…
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: SHAKEEL YAVAN JOGEE
creator: MARWYN ANASAMY
creator: SRUTI JEETUN
creator: MELANIE RICOT
creator: MAUKSHADA RAMKALAM
creator: ASHFAAQ KORIMBOCUS
creator: DEEPEEKA KAULLYSING
creator: BERNARDO NASCIMENTO
creator: BEATRIZ ESTELA CASARETO
creator: YOSHIMI SUZUKI
creator: DIAH PERMATA WIJAYANTI
creator: RANJEET BHAGOOLI
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-09-13
publication date: 2025-09-13

Spatio-temporal density patterns of corallivorous invertebrates around Rodrigues Island, Western Indian Ocean
type: item
description: Abstract. Priest JS, Ramah S, Ramkalam M, Korimbocus AM, Bhagooli R, Kaullysing D. 2025. Spatio-temporal density patterns of corallivorous invertebrates around Rodrigues Island, Western Indian Ocean. Indo Pac J Ocean Life 9: 92-99. Coral reef ecosystems globally are subject to multiple stressors making them targets for corallivore predation by organisms such as the crown-of-thorns starfish (COTS), Acanthaster (Gervais 1841) and gastropods, mainly Drupella (Thiele 1925). Around Rodrigues Island, little is known about COTS and gastropod corallivory. Surveys to assess COTS and Drupella cornus (Röding 1798) density were conducted using the belt transect method and random quadrat sampling, respectively, around Rodrigues Island from 2017 to 2020 at least once at six lagoon sites (1-2 m). In April 2024, additional surveys were carried out at nine lagoon sites (1-2 m) and seven dive sites (9-28 m), including previously surveyed locations. During this study, no COTS were observed along the surveyed transects, however, suspected COTS feeding scars were spotted on some coral colonies at two lagoonal sites. Significant spatio-temporal variations in D. cornus density were observed, with considerable increases at Rivière Banane from 0.07 ± 0.07 ind/m2 in 2018 to 0.93 ± 0.48 ind/m2 in 2024 and Var Brûlée from 0.40 ± 0.16 ind/m2 in 2017 to 2.07 ± 0.89 ind/m2 in 2024. Two-way ANOVA test revealed significant interaction between site and year (p < 0.01), suggesting that both spatial (site) and temporal (year) factors interact in influencing D. cornus densities. These findings suggest potential reef stress, possibly caused by fishing pressure, predator loss, and/or rising sea temperatures, and highlight the necessity for corallivore monitoring and intervention to protect the health and resilience of the coral reefs of Rodrigues. The study revealed that D. cornus, rather than COTS, poses a potential threat to Rodrigues reefs, particularly at Var?Brûlée and Rivière?Banane. Further resear…
subject: Articles
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subject: Array
  topic: keywords
creator: JESSICA S. PRIEST
creator: SUNDY RAMAH
creator: MAUKSHADA RAMKALAM
creator: ASHFAAQ M. KORIMBOCUS
creator: RanjeetRANJEET BHAGOOLI
creator: DEEPEEKA KAULLYSING
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-08-24
publication date: 2025-08-24

Herbivorous fish biomass and benthic composition around Rodrigues Island, Western Indian Ocean
type: item
description: Abstract. Ricot M, Jeetun S, Jogee SY, Anasamy M, Kaullysing D, Taleb-Hossenkhan N, Bhagooli R. 2025. Herbivorous fish biomass and benthic composition around Rodrigues Island, Western Indian Ocean. Indo Pac J Ocean Life 9: 79-89. Herbivorous reef fish play a critical role in maintaining coral reef resilience by controlling algal growth and facilitating coral recovery. This study assessed the biomass of herbivorous fish and benthic composition across coral-dominated (high live hard coral cover >20%) and non-coral-dominated (low live hard coral cover <20%) habitats at five sites, namely, Aquarium, Plateau Bénitier, Ti Trou, Antonio's Finger, and Couzoupa around Rodrigues Island, Western Indian Ocean. Fish biomass was estimated using triplicate belt transects, focusing on key herbivorous families (Acanthuridae and Scaridae), while benthic composition was quantified to identify habitat-specific patterns. Results revealed higher herbivorous fish biomass in coral-dominated habitats (1028.54±847.78 kg/ha) compared to non-coral-dominated habitats (728.34±229.36 kg/ha). No significant differences (p>0.05) were observed in the biomass of the Acanthuridae (p=0.56) nor Scaridae (p=0.36) fish families between coral-dominated and non-coral-dominated habitats. Coral-dominated habitats exhibited higher live hard coral cover (64.03±9.55%) compared to non-coral-dominated habitats (7.3±1.32%). Additionally, a significant interaction between protection status and live coral cover was observed, indicating that both protection measures and coral cover levels jointly influence herbivorous fish biomass. These findings underscore the importance of benthic habitat structure, particularly coral cover, in shaping herbivorous fish communities and supporting higher fish biomass in coral-dominated habitats.
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: MELANIE RICOT
creator: SRUTI JEETUN
creator: SHAKEEL YAVAN JOGEE
creator: MARWYN ANASAMY
creator: DEEPEEKA KAULLYSING
creator: NAWSHEEN TALEB-HOSSENKHAN
creator: RANJEET BHAGOOLI
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-07-23
publication date: 2025-07-23

Structure and composition of mollusks (Gastropoda and Bivalvia) in the coastal karstic ecosystems of Gunung Kidul, Yogyakarta, Indonesia
type: item
description: Abstract. Alghifari ZA, Nur FA, Sari YD, Anam ZK, Chairunisa S, Yap CK, Setyawan AD. 2025. Structure and composition of mollusks (Gastropoda and Bivalvia) in the coastal karstic ecosystems of Gunung Kidul, Yogyakarta, Indonesia. Indo Pac J Ocean Life 9: 64-78. Karstic coastal ecosystems in southern Java remain underexplored in terms of intertidal biodiversity, particularly mollusks. This study examines the structure, composition, and ecological traits of mollusk assemblages across five karst beach sites in Gunung Kidul, Yogyakarta, Indonesia: Pringjono, Torohudan, Ngrawah, Dadap Ayam, and Ngrenehan. A total of 28 valid mollusks species were identified from two classes—Gastropoda (23 species) and Bivalvia (5 species)—representing 17 families. Species richness and density varied across sites, shaped by substrate heterogeneity, tidal exposure, and anthropogenic influence. Gastropods dominated rocky and tide pool microhabitats, while bivalves were more abundant in sediment-rich, sheltered areas. Functional guilds included grazers, filter feeders, and predators, indicating a complex trophic structure. Microhabitat specificity and patchy distribution suggest that environmental filtering and habitat fragmentation play major roles in community assembly. Taxonomic verification was essential, leading to the exclusion of 17 misidentified taxa initially reported. This study highlights the ecological importance and vulnerability of molluscan communities in tropical karst ecosystems. It underscores the need for site-specific conservation strategies, such as protecting rocky and tide pool microhabitats for gastropods and sediment-rich, sheltered areas for bivalves, and improved taxonomic rigor in coastal biodiversity assessments.
subject: Articles
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subject: Array
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creator: ZAHIR ABDURRAHMAN ALGHIFARI
creator: FAIZA ALIYA NUR
creator: YULIA DINDA SARI
creator: ZAKA KHOIRUL ANAM
creator: SAFIRA CHAIRUNISA
creator: CHEE KONG YAP
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-07-23
publication date: 2025-07-23

Short Communication: Spatial distribution and diversity of intertidal crustaceans in karstic beaches of southern Java, Indonesia
type: item
description: Abstract. Hartono DAN, Widowati D, Saputra EF, Wicaksono FR, Pramadaningtyas PS, Yap CK, Setyawan AD. 2025. Short Communication: Spatial distribution and diversity of intertidal crustaceans in karstic beaches of southern Java, Indonesia. Indo Pac J Ocean Life 9: 26-35. Karstic coastal systems in tropical regions are often overlooked in biodiversity assessments despite their ecological complexity and vulnerability. This study investigates the species composition, diversity, and environmental drivers of intertidal crustacean communities across five karstic beaches in Gunungkidul, Indonesia. A total of 18 crustacean species were recorded, with Coenobita scaevola emerging as the most dominant and widely distributed taxon. Species richness and the Shannon-Wiener diversity index (H?) varied significantly among sites, with Ngrenehan Beach exhibiting the highest diversity (H?=2.18) and Ngrawah the lowest (H?=1.23). Among the measured abiotic parameters, dissolved oxygen (DO) showed the strongest positive correlation with H? (r=0.92, p<0.05), indicating its critical role in structuring crustacean assemblages. Cluster analysis revealed two distinct site groups, reflecting spatial heterogeneity in species composition likely shaped by microhabitat features. The findings underscore the importance of karstic intertidal habitats as localized biodiversity reservoirs and emphasize the need for site-specific conservation strategies and long-term ecological monitoring in tropical coastal regions.
subject: Articles
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subject: Array
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creator: DAIVA ARDHANIA NIRWASITA HARTONO
creator: DIAN WIDOWATI
creator: EDRIC FARREL SAPUTRA
creator: FAUZAN RAFI WICAKSONO
creator: PUTRI SEGI PRAMADANINGTYAS
creator: CHEE KONG YAP
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-07-23
publication date: 2025-07-23

Review: Bioactive compounds and therapeutic potentials of coral reef organisms
type: item
description: Abstract. Syamsi RN, Rosyida SH, Allysa TN, Hanifah W, Izdihar RS, Naim DM, Setyawan AD. 2025. Review: Bioactive compounds and therapeutic potentials of coral reef organisms. Indo Pac J Ocean Life 9: 46-63. Coral reef ecosystems harbor an extraordinary diversity of marine organisms that are increasingly recognized as rich sources of bioactive compounds. This review examines the biodiversity, chemical composition, and pharmacological activities of coral reef organisms, with a particular focus on soft corals, macroalgae, sponges, and their associated microorganisms. Key classes of compounds—including terpenoids, alkaloids, steroids, and sulfated polysaccharides—have demonstrated potent antibacterial, antiviral, anti-inflammatory, anticancer, and immunomodulatory properties in both in vitro and in vivo studies. Beyond laboratory findings, this study highlights the ethnopharmacological significance of coral-derived organisms in traditional healing systems across Southeast Asian coastal communities. It also explores the continuity and erosion of these practices, and discusses their potential integration into modern complementary medicine frameworks. The final sections address critical challenges in coral-based drug discovery, such as taxonomic underrepresentation, unsustainable harvesting, and regulatory constraints. At the same time, the review identifies emerging opportunities facilitated by omics technologies, synthetic biology, and interdisciplinary collaboration. By synthesizing biomedical and cultural perspectives, this review underscores the immense therapeutic potential of coral reef biodiversity and calls for integrated conservation and research strategies that ensure both ecological integrity and equitable innovation.
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: RAHMA NUR SYAMSI
creator: SYARIFAH HASNA ROSYIDA
creator: TALITHA NASWA ALLYSA
creator: WHENY HANIFAH
creator: RINOA SALSABILA IZDIHAR
creator: DARLINA MD. NAIM
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-07-23
publication date: 2025-07-23

Plastic waste characteristics and community responses in mangrove-influenced coastal villages of Kampung Laut, Cilacap, Indonesia
type: item
description: Abstract. Astuti AR, Putri DS, Arlysia V, Santika YE, Safitri FE, Setyawan AD. 2025. Plastic waste characteristics and community responses in mangrove-influenced coastal villages of Kampung Laut, Cilacap, Indonesia. Indo Pac J Ocean Life 9: 36-45. Plastic pollution presents a significant threat to coastal and mangrove ecosystems, particularly in low-income and infrastructure-deficient regions of Southeast Asia. This study investigates the composition of plastic waste and the perceptions and behaviors of local communities in three mangrove-influenced villages of Kampung Laut Sub-district, Cilacap, Indonesia. Field surveys conducted in 33 sampling plots revealed that plastic waste was predominantly composed of single-use items, especially polypropylene (PP), low-density polyethylene (LDPE), and polyethylene terephthalate (PET), reflecting both domestic consumption and livelihood-related activities such as fisheries and aquaculture. A structured questionnaire grounded in the Knowledge-Attitude-Practice (KAP) framework was administered to 91 respondents. Statistical analyses, including Principal Component Analysis, Pearson correlation, and Partial Least Squares Structural Equation Modeling (PLS-SEM), were employed to explore the relationships among cognitive and behavioral variables. The results indicated that knowledge significantly influenced attitudes, which were positively associated with pro-environmental behavior; however, knowledge alone did not directly predict action. Sociodemographic constraints—particularly low education and income levels—further limited behavioral change despite moderate awareness. Comparisons with regional and global studies suggest that such gaps are common in coastal communities. These findings underscore the need for integrated waste governance strategies that combine education, infrastructure, and locally adapted regulations, alongside stronger integration between plastic waste management and mangrove conservation efforts.
subject: Articles
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subject: Array
  topic: keywords
creator: ANGELA REGINA ASTUTI
creator: DINDA SYAFIRA PUTRI
creator: VIDDA ARLYSIA
creator: YOUHANA ELI SANTIKA
creator: FAUZIANA ERLIS SAFITRI
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-07-23
publication date: 2025-07-23

Diversity of soil macrofauna in the coastal karst area of Gunung Sewu, Paranggupito Sub-district, Wonogiri District, Indonesia
type: item
description: Abstract. Pramono CL, Ramadhani G, Zahra JA, Wahyuningtyas J, Nugroho GD, Indrawan M, Setyawan AD. 2025. Diversity of soil macrofauna in the coastal karst area of Gunung Sewu, Paranggupito Sub-district, ??Wonogiri District, Indonesia. Indo Pac J Ocean Life 9: 1-11. As a region with unique characteristics of limestone formations and a complex drainage system, the karst region faces environmental challenges that affect its macrofauna diversity. This study aims to identify soil macrofauna and analyze the relationship between abiotic factors that influence their presence in agroforestry land in a coastal karst area of Gunung Sewu, a United Nations Educational, Scientific and Cultural Organization (UNESCO) Global Geopark, including Paranggupito Village, Gudangharjo Village, and Gunturharjo Village of Paranggupito Sub-district, Wonogiri District, Central Java, Indonesia, that was conducted in October 2024. To achieve the study's objectives, we measured abiotic factors, including physical and chemical elements of the environment, such as temperature, air humidity, soil humidity, light intensity, altitude, soil pH, and soil temperature. This study involved two types of plantation patterns in each village, namely woody and intercropping vegetation, with 18 research points divided into 2 stations in each area, each consisting of 3 sub-stations with 90 pitfall traps. Soil macrofauna samples were collected using the pitfall trap method, and data were analyzed using a diversity index and Pearson correlation between the diversity of soil macrofauna and its abiotic factors. The results showed that 16 different species were found in all three villages, and the sugar ant (Camponotus consobrinus) species dominated the intercropping vegetation, with a total of 347 individuals and 104 individuals in woody vegetation. The diversity of macrofauna at each station was relatively low. In contrast, the relationship between abiotic factors and diversity showed varying correlations, such as so…
subject: Articles
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subject: Array
  topic: keywords
creator: CALVIN LEVYANTO PRAMONO
creator: GLORA RAMADHANI
creator: JASMINE AISYAH ZAHRA
creator: JUNIETA WAHYUNINGTYAS
creator: GILANG DWI NUGROHO
creator: MUHAMMAD INDRAWAN
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-03-21
publication date: 2025-03-21

Structure and composition of Ophiuroidea (Echinodermata) at three beaches in Gunungkidul, Yogyakarta, Indonesia
type: item
description: Abstract. Yap CK, Putri RRA, Manullang RH, Andrianto R, Salsabila S, Nugroho GD, Setyawan AD. 2024. Structure and composition of Ophiuroidea (Echinodermata) at three beaches in Gunungkidul, Yogyakarta, Indonesia. Indo Pac J Ocean Life 8: 112-121. Ophiuroidea (Echinodermata) contribute significantly to species diversity, abundance, and biomass of the world's marine fauna. The study aimed to determine the composition structure of Ophiuroidea in the coastal area of Gunungkidul, Yogyakarta, Indonesia. It was conducted in March 2024 at Pringjono Beach, Torohudan Beach, and Dadap Ayam Beach, at low tide with a sampling area of about 1,000 m2 on each beach. We recorded the name of the species, the number of individuals, and description of visible characteristics as well as pH, Dissolved Oxygen (DO), and seawater temperature. The data were analyzed using the density, Shannon-Wiener diversity index (H'), evenness index (E), and richness index (R). We found five species from two families, Ophiocomidae, with Breviturma dentata (Müller and Troschel, 1842); Ophiocoma schoenleinii (Müller and Troschel, 1842); Ophiocoma scolopendrina (Lamarck, 1816); Ophiocoma erinaceus (Müller and Troschel, 1842); and Ophiomyxidae, with only one species, Ophiarachna affinis (Lütken, 1869). Breviturma dentata was the most dominant species, with 495 individuals. Pringjono Beach had the highest density, followed by Torohudan Beach and Dadap Ayam Beach. Then, for H' and E were low, but R was moderate. Water temperature, pH, and DO may affect species density in these areas.
subject: Articles
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subject: Array
  topic: keywords
creator: CHEE KONG YAP
creator: RANI RACHMA ASTINING PUTRI
creator: RAYMOND HAMONANGAN MANULLANG
creator: ROI ANDRIANTO
creator: SIBRINA SALSABILA
creator: GILANG DWI NUGROHO
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-03-21
publication date: 2025-03-21
doi: 10.13057/oceanlife/o080206

Potential and strategy for ecotourism development in the coastal area of Paranggupito Sub-district, Wonogiri District, Indonesia
type: item
description: Abstract. Afifah RN, Alfiyah LK, Bernadetta MP, Simanjuntak MPD, Setyaningrum M, Sunarto, Setyawan AD. 2025. Potential and strategy for ecotourism development in the coastal area of Paranggupito Sub-district, Wonogiri District, Indonesia. Indo Pac J Ocean Life 9: 12-25. Ecotourism emphasizes environmental conservation while supporting nature preservation and local community welfare. It arose as a response to the harmful effects of conventional tourism, such as ecosystem damage, biodiversity loss, and community disruption, aiming instead for responsible tourism that protects nature. This study aims to determine the management conditions of Karang Payung, Nampu, and Klothok Beaches in Paranggupito Sub-district, Wonogiri District, Central Java, Indonesia and the potential of TAO (Tourist Attraction Objects) that have been operating, as well as beach development strategies. Data collection was carried out by observation and interviews using simple random sampling method to 102 people throughout the beach, which was then analyzed by ADO ODTWA (Analysis of Operational Areas of Objects and Natural Tourism Attractions) method to determine the potential feasibility of the area, then continued with SWOT (Strengths, Weakness, Opportunity, and Threats) analysis as a development recommendation. The results of the ADO ODTWA analysis show that the accessibility aspect of Nampu Beach has a feasibility index on the facilities aspect of 59.50% (not feasible). The accessibility index of Karang Payung Beach is 60.29% (not feasible), and the facility index is 65.71% (not feasible). The results of this analysis indicate the necessity for improvement and development of attractions and accessibility. The results of the SWOT analysis on Nampu Beach and Karang Payung Beach necessitate the formulation of a strategic plan.
subject: Articles
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subject: Array
  topic: keywords
creator: RATIH NUR AFIFAH
creator: LUNETTA KHALIS ALFIYAH
creator: MARETTA PATRICIA BERNADETTA
creator: MARIO PINTOR DAVID SIMANJUNTAK
creator: MARISCA SETYANINGRUM
creator: SUNARTO SUNARTO
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-04-01
publication date: 2025-04-01

Mangrove dynamics on the Madura Island coast, Indonesia, analyzed through NDVI: Balancing degradation and restoration efforts
type: item
description: Abstract. Ramadhani G, Wahyuningtyas J, Arifiandita DM, Ayuningtyas HR, Deristani A, Ulumuddin YI, Setyawan AD. 2024. Mangrove dynamics on the Madura Island coast, Indonesia, analyzed through NDVI: Balancing degradation and restoration efforts. Indo Pac J Ocean Life 8: 101-111. Mangrove ecosystems are plant communities that thrive at the interface between land and sea, but they face significant threats, particularly from land conversion. The mangrove forests along the coast of Madura have experienced a decline in coverage due to such conversion. This study offers valuable insights into changes in mangrove areas and uses NDVI analysis to assess these changes from 2019 to 2024. The study focuses on monitoring mangrove forest distribution and changes in the Bangkalan, Sampang, Pamekasan, and Sumenep coastal areas. Primary data were obtained from Sentinel-2A - 2A satellite imagery of Madura. Data analysis used the Kappa Analysis method to validate mangrove density classification. Results showed an increase in mangrove coverage in Bangkalan between 2019 and 2024, with the moderately dense category rising from 348.9 to 355.3 hectares and the dense category increasing from 114.7 to 150.1 hectares. Similarly, in Pamekasan, the moderately dense classification grew from 305.4 to 409.3 hectares. However, overall, the reduction in mangrove forest area was more significant than the increase. The Kappa accuracy of 70% indicated moderate reliability, with data discrepancies in 14 out of 40 points. In Madura's mangrove forests, conservation efforts include education, conservation initiatives, and community empowerment through sustainable environmental communication strategies.
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: GLORA RAMADHANI
creator: JUNIETA WAHYUNINGTYAS
creator: DIO MEILANA ARIFIANDITA
creator: HANUM RACHMA AYUNINGTYAS
creator: ANGGUN DERISTANI
creator: YAYA IHYA ULUMUDDIN
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-03-01
publication date: 2025-03-01
doi: 10.13057/oceanlife/o080205

Water resource sustainability in the coastal-karst area of Paranggupito Sub-district, Wonogiri, Indonesia
type: item
description: Abstract. Aryanto AEP, Herbowo ACF, Aftsari AI, Maharani MP, Worokinkkin SPDA, Setyawan AD. 2024. Water resource sustainability in the coastal-karst area of Paranggupito Sub-district, Wonogiri, Indonesia. Intl J Trop Drylands 8: 94-100. The karst region, with its unique geological landscape characterized by barren limestone hills, presents a significant challenge for the local population in processing clean water. Therefore, sustainable water source management is of utmost importance. This study aims to examine the water usage in Gunturharjo, Gudangharjo, and Paranggupito Villages and identify the water sources used to meet daily needs. The method used in this research is a descriptive-qualitative approach. Primary data were obtained from interviews and surveys conducted in the villages. In comparison, secondary data were obtained through a literature review of scientific articles, books, and websites related to water management. This study shows that in the three villages of Paranggupito Sub-district, Wonogiri District, most water sources are heavily influenced by the seasons. Based on interviews, 46% of the community obtains water for daily needs from communally managed water sources, while the remaining 54% manage their water or rely on privately owned dug wells. Otherwise, the regulations or applicable rules have not yet been implemented, so the management and sustainability of water resources are at risk. In terms of sustainability, the management of water resources can meet daily water needs for the next few years. Still, it does not guarantee the sustainability and quality of water, especially for drinking purposes.
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: ANISA EKA PUTRI ARYANTO
creator: ARDIA CANDRA FAJAR HERBOWO
creator: AYU INTAN AFTSARI
creator: MARTINA PUTRI MAHARANI
creator: SEKAR PANDAN DYAH AYU WOROKINKKIN
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2025 Indo Pacific Journal of Ocean Life
date: 2025-03-01
publication date: 2025-03-01
doi: 10.13057/oceanlife/o080204

Species diversity of mangrove at tree and pole level in Sampang and Pamekasan Districts, Madura Island, Indonesia
type: item
description: Abstract. Lathifah MN, Muazulfa TI, Nisa WK, Raharjo YAA, Arta YPA, Setyawan AD. 2024. Species diversity of mangrove at tree and pole level in Sampang and Pamekasan Districts, Madura Island, Indonesia. Indo Pac J Ocean Life 8: 84-93. Madura Island, Indonesia, located northeast of Java Island, features naturally occurring mangrove vegetation along its coastline. Mangrove forests encompass approximately 75% of the coastlines in tropical and subtropical regions. The diversity of mangrove species needs to be assessed to determine the current situation and provide an evaluation of biodiversity conservation. In this research, the mangrove species diversity at both tree and pole level in the coast of Taddan Village, Sampang District (7°13'7.53"S, 113°16'15.93"E), Song Osong Beach, Sampang District (7°13'19.55"S, 113°12'10.63"E), Branta Tinggi Village, Pamekasan District (7°13'19.53"S, 113°27'12.45"E) and Tlanakan Village, Pamekasan District (7°13'16.24"S, 113°26'11.68"E), Madura Island, East Java, Indonesia were determined. A 150 m long transect plot was established at each station, yielding 40 plots for 4 stations. Abiotic factors, including temperature, salinity, pH, and soil moisture at the study location, were also measured. The Shannon-Wiener Index (H') is used to analyze the species diversity index; Pielou's Evenness and Margalef's Richness index analysis are also calculated in this research. The results indicated that there are 3 species consisting of Rhizophora stylosa, Avicennia marina, and Sonneratia alba. The diversity analysis showed a moderate category (H' range: 1.85-2.56), with the highest values at both tree and pole levels recorded at Song Osong Beach (H' tree: 2.56, H' pole: 2.19). Meanwhile, the lowest value at the tree level was recorded at Taddan Village (H': 1.99), and the pole level is at Branta Tinggi Village (H': 1.85). The Margalef's richness values obtained range from D: 39.34-95.58 (high) at the tree level and D: 13.61-98.00 (high) at the pole l…
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: MARDHIAH NURUL LATHIFAH
creator: TSALATSUN IKHWA MUAZULFA
creator: WINDIA KHOIRUN NISA
creator: YAQUT AMJAD ADILLAH RAHARJO
creator: YUNIA PUTRI ANNISA ARTA
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2024 Indo Pacific Journal of Ocean Life
date: 2024-11-18
publication date: 2024-11-18
doi: 10.13057/oceanlife/o080203

Review: The nutritional value and health benefits of kawakawa (Euthynnus affinis)
type: item
description: Abstract. Rahma HS, Ayuningtyas HR, Nabila I, Annafi DN, Nurwulandari M, Indrawan M, Dadiono MS, MD Naim D, Setyawan AD. 2024. Review: The nutritional value and health benefits of kawakawa (Euthynnus affinis). Indo Pac J Ocean Life 8: 72-83. Kawakawa (Tuna), or Euthynnus affinis (Cantor, 1849), is a species of pelagic fish of the Scombridae family with a vast habitat and distribution in tropical and subtropical waters in the Indo-Pacific region. This literature review aims to provide an understanding of the habitat, morphological characteristics, nutritional content, and benefits of kawakawa for health. Kawakawa prefer warm waters with a temperature of 20-30°C. As a pelagic fish, kawakawa spends most of its life in the open water column and away from the seabed. Kawakawa morphologically has unique characteristics, namely oblique and curved black stripes on the ribs and the presence of a pattern of black stripes between the abdomen and fins. This fish can grow to a maximum weight of 14 kg and a maximum fork length (FL) of 100 cm. The nutritional content of kawakawa is diverse, and it includes protein, omega-3, omega-6, selenium, vitamin D, and DHA. The protein content of kawakawa ranges from 20 to 25%, with 0.87% fat, which is lower than that of other fish species. With its high protein, low fat, and strong omega-3 fatty acid profile, kawakawa has a high overall nutritional value, making it a nutrient-dense food choice. The nutritional content in kawakawa has health benefits, namely preventing stunting, reducing heart risk, preventing cancer, maintaining eye health, increasing body immunity, preventing anemia, and maintaining bone health.
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: HANIFA SABILA RAHMA
creator: HANUM RACHMA AYUNINGTYAS
creator: IFFAH NABILA
creator: DESTA NAUFAL ANNAFI
creator: MURNI NURWULANDARI
creator: MUHAMMAD INDRAWAN
creator: MUH. SULAIMAN DADIONO
creator: DARLINA MD. NAIM
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2024 Indo Pacific Journal of Ocean Life
date: 2024-11-09
publication date: 2024-11-09
doi: 10.13057/oceanlife/o080202

Diversity and composition of Crustacean and Mollusk in mangrove area in Sampang and Pamekasan Districts, Madura Island, Indonesia
type: item
description: Abstract. Haqqi MRA, Sholichah DM, Ashila J, Reza AD, Indrawan M, Dadiono MS, Yap CK, Rahim KABA, Setyawan AD. 2024. Diversity and composition of Crustacean and Mollusk in mangrove area in Sampang and Pamekasan Districts, Madura Island, Indonesia. Indo Pac J Ocean Life 8: 59-71. Mangrove ecosystem in Indonesia is the largest in the world and contains various biota with a great interest to study. An example of mangrove ecosystems can be found in Sampang and Pamekasan Districts, Madura Island which have a high potential for biodiversity, such as Crustacean and Mollusk. However, information regarding the diversity of Crustaceans and Mollusks in that territory is still very limited. Therefore, this research was conducted to assess the diversity of Crustaceans and Mollusks in the mangrove area of Sampang and Pamekasan Districts. The study was conducted in December 2023 with data collection located at four stations: (i) Taddan, Camplong Sub-district and (ii) Song-Osong Beach, Sampang Sub-district, both in Sampang District; (iii) Branta Tinggi and (iv) Raya Ambat Street both in Tlanakan Sub-district, Pamekasan District. Data on biotic and abiotic environmental parameters was collected and sampling of Crustacean and Mollusk was conducted using Visual Encounter Survey (VES) and direct catching. The results showed that mangrove ecosystem in Sampang and Pamekasan Districts had certain similarities, i.e. both were composed by vegetation of Sonneratia alba, Avicennia marina, Sonneratia caseolaris, and Rhizophora mucronata. The environmental parameters measurement showed that the study area location has warm temperatures, wet soil, neutral pH, and relatively low salinity compared to Madura Strait. There were 32 Crustacean species with the mostly found was Balanus sp. (barnacle), followed by Clibanarius longitarsus (common hermit crab). The number of Mollusks obtained was 24 species with the mostly found was Pirenella alata and Pirenella cingulata. Based on ecological indices calc…
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: MUHAMMAD RAHARDIAN ADILA HAQQI
creator: DAMAYANTI MIFTACHUS SHOLICHAH
creator: JILAN ASHILA
creator: ANGGI DWIKI REZA
creator: MUHAMMAD INDRAWAN
creator: MUH. SULAIMAN DADIONO
creator: CHEE KONG YAP
creator: KHAIRUL ADHA BIN A. RAHIM
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2024 Indo Pacific Journal of Ocean Life
date: 2024-11-09
publication date: 2024-11-09
doi: 10.13057/oceanlife/o080201

Diversity of reef fish in the littoral zone of the south coast of Gunungkidul District, Yogyakarta, Indonesia
type: item
description: Abstract. Rahma HS, Ayuningtyas HR, Nabila I, Annafi DN, Dianti, Yap CK, Dadiono MS, Setyawan AD. 2024. Diversity of reef fish in the littoral zone of the south coast of Gunungkidul District, Yogyakarta, Indonesia. Indo Pac J Ocean Life 8: 43-51. Diversity in the intertidal zone plays an important role in the marine ecosystem. The balance of the intertidal zone's ecosystem and environmental health can be inferred from the diversity of fish. This study aims to identify reef fish species diversity in the intertidal zone of the south coast of Gunungkidul, Yogyakarta, Indonesia. The research was conducted on five beaches, i.e., Pringjono, Ngrenehan, Ngrawah, Torohudan, and Dadap Ayam, each with its own distinct ecological features. Survey and exploratory methodologies were utilized to analyze and reveal field findings. Observation and sampling were conducted using the random sampling approach. Data were analyzed using the Shannon Diversity Index (H'), the Evenness Index (E), and the Richness Index (Dmg). The study identified 1,378 individuals comprising 45 species and 28 families. The highest number of individuals was caught at Pringjono Beach, with 369 individuals. Asterropteryx semipunctata and Bathygobius fuscus from the Gobiidae family dominated most stations. The Diversity Index (H') indicated high species diversity across all stations, with the highest value of 3.562 and the lowest of 3.023. For the Evenness Index, most of the five stations were classified as almost evenly distributed, as the lowest value was 0.92 and the highest was 0.97. Meanwhile, the richness index of the fish species at the five research locations is a high category. In sampling stations, there are some differences in abiotic factors, such as salinity, water pH, water temperature, and Dissolved Oxygen (DO), which can affect the composition and distribution of reef fish in the littoral zone in Gunungkidul beach areas.
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: HANIFA SABILA RAHMA
creator: HANUM RACHMA AYUNINGTYAS
creator: IFFAH NABILA
creator: DESTA NAUFAL ANNAFI
creator: DIANTI DIANTI
creator: CHEE KONG YAP
creator: MUH. SULAIMAN DADIONO
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2024 Indo Pacific Journal of Ocean Life
date: 2024-07-22
publication date: 2024-07-22
doi: 10.13057/oceanlife/o080105

Analysis of mangrove forest ecosystem sustainable management by coastal communities in Sampang District, Madura Island, Indonesia
type: item
description: Abstract. Koesdaryanto NSR, Wijayanti M, Simanjuntak MPD, Fathoni MFM, Sulton MN, Lillo EP, Setyawan AD. 2024. Analysis of mangrove forest ecosystem sustainable management by coastal communities in Sampang District, Madura Island, Indonesia. Indo Pac J Ocean Life 8: 33-42. The mangrove forest ecosystem is important in a coastal area to improve the welfare of coastal villages and increase the productivity of coastal ecosystems. This ecosystem has indicators of sustainability efforts, including ecological, economic, and social dimensions. This study aims to determine the sustainability status of mangrove forest ecosystems and compile recommendations in Taddan and Aeng Sareh Villages, Sampang Sub-district, Sampang District, East Java, Indonesia. This research and data collection was carried out in December 2023. The methods used in data collection are interview techniques and questionnaire distribution. The primary data is processed with the Multidimensional Scaling (MDS) method through Rapid Appraisal for Fisheries (Rapfish), which displays Monte Carlo analysis, and the data results are aligned with previous literature studies. The results of the analysis showed that the sustainability index of mangrove ecosystem management in the two villages was included in the less sustainable category, including ecological dimensions (sustainability index of Taddan and Aeng Sareh Villages respectively namely 62.88 and 21.05), economic (sustainability index of Taddan and Aeng Sareh Villages respectively 35.78 and 40.14), and social (sustainability index of Taddan and Aeng Sareh Villages respectively 42.94 and 39.51). Alternative strategy recommendations that can be applied for sustainable mangrove ecosystem management in Taddan and Aeng Sareh Villages, Sampang, are improving coordination between stakeholders, making patented regulations, training on creativity and productivity of village communities, formulating mangrove ecosystem management programs, routinely carrying out rehabil…
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: NILAM SARI RAMADHANI KOESDARYANTO
creator: MUTIARA WIJAYANTI
creator: MARIO PINTOR DAVID SIMANJUNTAK
creator: MUH. FAQIH MUHAIMIN FATHONI
creator: MUHAMMAD NUR SULTON
creator: LIA KUSUMANINGRUM
creator: MUHAMMAD INDRAWAN
creator: EDGARDO P. LILLO
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2024 Indo Pacific Journal of Ocean Life
date: 2024-06-12
publication date: 2024-06-12
doi: 10.13057/oceanlife/o080104

Diversity and first record of Porifera (sponges) from Gujarat Coast, India
type: item
description: Abstract. Sabapara Z, Poriya P. 2024. Diversity and first record of Porifera (sponges) from Gujarat Coast, India. Indo Pac J Ocean Life 8: 18-32. The present study represents a significant milestone in understanding sponge diversity in the Gujarat Coastal area. This investigation identified 51 sponge species and classified them into 3 classes and 28 families. Amongst the reported species, 47 species belong to class Demospongiae, followed by Calcarea and Homoscleromorpha, with 2 species, respectively. Remarkably, 24 of these species were previously undocumented along the Gujarat Coastline, while two species, Sycon grantioides Dendy, 1916 and Halichondria (Halichondria) tenuiramosa Dendy, 1922 only reported from the Gujarat Coast in India. Our research involved exploring 11 sites along the coast, with the primary objective of documenting intertidal sponges and exploring valuable insights into their habitat preferences. The study also includes information on the distribution patterns of these species within the region. Except for a few bio-eroding boring sponges, most of the recorded sponge species exhibit an encrusting growth habit. They are typically found in habitats beneath the rocks, zoanthid beds, shallow rock pools, coralline beds, caves-crevices and in close association with other macrofauna and seaweeds. This diverse range of habitats suggests the adaptability and resilience of these sponges in various ecological niches along the Gujarat Coast. The finding of many new records highlights the necessity of ongoing study and conservation initiatives to protect the diverse marine biodiversity of the Gujarat Coastline.
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: ZALAK SABAPARA
creator: PARESH PORIYA
rights: Copyright (c) 2024 Indo Pacific Journal of Ocean Life
date: 2024-05-05
publication date: 2024-05-05
doi: 10.13057/oceanlife/o080103

Diversity of waterbirds around Ekasoghi mangrove area, Sumenep, with the first record of Australian tern (Gelochelidon macrotarsa) from Madura Island, Indonesia
type: item
description: Abstract. Andrimida A, Sonhaji A, Hardiyan FZ. 2024. Diversity of waterbirds around Ekasoghi mangrove area, Sumenep, with the first record of Australian tern (Gelochelidon macrotarsa) from Madura Island, Indonesia. Indo Pac J Ocean Life 8: 10-17. Mangrove forests provide an essential habitat for a lot of organisms, and they also provide an important habitat for waterbirds. This study aims to provide an overview of waterbirds' diversity and abundance around Ekasoghi mangrove area situated on the eastern coast of Sumenep, Madura Island on East Java, Indonesia. This research was conducted at three stations, each representing a different habitat type around Ekasoghi mangrove area. Waterbird data was collected using the exploration method, and waterbird species were determined by examining their morphological characteristics. Waterbirds' diversity was determined using the Shannon-Wiener diversity index, and the abundance was determined using the abundance index. Moreover, 38 individuals belonging to 15 species from 4 orders and 6 families were recorded during this study, with more than half belonging to the Charadriiformes order; the waterbird diversity index ranged from the highest 1.97 to the lowest 1.33. Three species with the highest abundance index value are striated heron (Butorides striata) with an abundance index value of 18.42, followed by Javan plover (Anarhynchus javanicus) and common sandpiper (Actitis hypoleucos) as the second with an abundance index value of 13.16. This research also provides the first record of the migrating seabird Australian tern (Gelochelidon macrotarsa) from Madura Island.
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: ANTHON ANDRIMIDA
creator: ACHMAD SONHAJI
creator: FAUZUL ZAIN HARDIYAN
rights: Copyright (c) 2024 Indo Pacific Journal of Ocean Life
date: 2024-03-14
publication date: 2024-03-14
doi: 10.13057/oceanlife/o080102

Enabling conditions toward the rehabilitation and preservation of mangrove ecosystem in Sampang, Madura Island, Indonesia
type: item
description: Abstract. Aftsari I, Pramono CL, Alyodya DA, Nurwulandari M, Sujarta P, Dadiono MS, Yap CK, Setyawan AD. 2024. Enabling conditions for the rehabilitation and preservation of mangrove ecosystem in Sampang, Madura Island, Indonesia. Indo Pac J Ocean Life 8: 1-9. Mangroves are a very productive ecosystem that is important to the environment and human welfare. Rehabilitation activities need to be carried out to restore mangrove forests that have experienced degradation. In doing so, local communities have an important role because their involvement can minimize human disturbance and realize sustainable mangrove management. This research aims to determine the circumstances that can facilitate or prohibit local communities in the rehabilitation of mangrove forests in Sampang District, Madura Island, East Java Province, Indonesia. This research was conducted in two villages in Sampang District, i.e.: Taddan and Gulbung in December 2023 using two methods, namely remote sensing analysis to determine changes in mangrove cover from 2008 to 2023 and in-depth interviews to determine the role and strategies of the community in mangrove rehabilitation. The remote sensing analysis shows significant increase in mangroves in Taddan Village from 54.7757 ha in 2008 to 101.718 ha in 2023 (+46.9422 ha). During the same period, mangroves in Gulbung Village increased from 21.6928 ha to 30.6723 ha (+8.9795 ha), although there was a decreasing trend during the period of 2013-2023. There is a difference in situation between the two villages, where in Taddan there are rehabilitation and conservation activities, increasing mangroves, while in Gulbung some mangroves have been converted into salt ponds, especially during the last decade. The results of the interviews revealed that public knowledge and awareness regarding the benefits and importance of mangrove management are still low. We also found that the facilitation from governments and the formation of community groups might enable the pres…
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: INTAN AFTSARI
creator: CALVIN LEVYANTO PRAMONO
creator: DANIEL ABILEON ALYODYA
creator: MURNI NURWULANDARI
creator: PUGUH SUJARTA
creator: MUH. SULAIMAN DADIONO
creator: CHEE KONG YAP
creator: AHMAD DWI SETYAWAN
rights: Copyright (c) 2024 Indo Pacific Journal of Ocean Life
date: 2024-03-03
publication date: 2024-03-03
doi: 10.13057/oceanlife/o080101

Short Communication: Efficiency economic of whiteleg shrimp Litopenaeus vannamei (Boone 1931) cultivation with a household scale biofloc system
type: item
description: Abstract. Bidayani E, Valen FS. 2023. Short Communication: Efficiency economic of whiteleg shrimp Litopenaeus vannamei (Boone 1931) cultivation with a household scale biofloc system. Indo Pac J Ocean Life 7: 156-160. Aquaculture is one of the necessary sectors for fisheries in Indonesia because it can contribute to national food security, income, employment development, and foreign exchange earnings. Shrimp is a non-oil and gas export commodity that plays a crucial role. Besides the high price, shrimp has a large market in various countries Whiteleg shrimp Litopenaeus vannamei (Boone 1931) cultivation is synonymous with large capital. However, with innovation, people can cultivate whiteleg shrimp in their yards with small capital. This study aims to analyze the business efficiency of a household-scale shrimp farming business with a biofloc system. The research method is a case study in the Bio Ebi Micro Fish Cultivator Group, Air Mawar Village, Air Itam District, Pangkalpinang City, Bangka Belitung Islands Province, Indonesia. Collecting data is observation and interviews; the data analysis method is descriptive. The study's results show the acceptance of cultivators per cycle is 172,800,000 IDR with an average production yield of 1.8 tons/cycle with a selling price of 96,000 IDR/kg. The efficiency of household-scale shrimp farming with a biofloc system is 2.39. Based on these results, household-scale whiteleg shrimp cultivation is feasible to develop in coastal areas.
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: ENDANG BIDAYANI
creator: FITRI S. VALEN
rights: Copyright (c) 2024 Indo Pacific Journal of Ocean Life
date: 2023-12-31
publication date: 2023-12-31
doi: 10.13057/oceanlife/o070205

Diversity, density and photo-physiology of micro-phytoplankton from degraded and non-degraded reefs around Rodrigues Island, Western Indian Ocean
type: item
description: Abstract. Soondur M, Kaullysing K, Ramah S, Bhagooli R. 2023. Diversity, density and photo-physiology of micro-phytoplankton from degraded and non-degraded reefs around Rodrigues Island, Western Indian Ocean. Indo Pac J Ocean Life 7: 108-121. This study aimed at investigating the variations in micro-phytoplankton diversity, density and photo-physiology between a degraded, Anse Aux Anglais (AAA) in the north, and a non-degraded, Port Sud-Est (PSE) in the southeast, reefs around Rodrigues Island, Republic of Mauritius. Sampling was carried out in summer and winter seasons from 2016 to 2019 at the two sites, PSE and AAA. Micro-phytoplankton samples were collected using a plankton net of 5µm and conserved with Lugol’s solution. Physico-chemical parameters namely temperature, dissolved oxygen, salinity, and ph were recorded in situ. Seawater samples were collected for nutrient and chlorophyll-a concentration analyses. The Total Micro-Phytoplankton Densities (TMPD) did not differ seasonally for the whole period from 2016 until 2019 but there was a significant difference station-wise (P < 0.01), with higher TMPD recorded at the non-degraded reef of PSE. PSE exhibited the higher species diversity. Diatoms and dinoflagellates were more abundant at PSE while the cyanobacteria showed higher densities at AAA. Genera like Licmorphora, Gonyaulax, Polykrikos, Trichodesmium, and Lygnbya, reported worldwide to possibly cause mortality and/or changing community structure of corals, were recorded at both PSE and AAA though not at blooming densities. Photo-physiological assessment of micro-phytoplankton, using a Diving Pulse-Amplitude-Modulated (D-PAM) fluorometer, varied significantly both seasonally and spatially. These findings indicated that the non-degraded reef site had higher micro-phytoplankton density, diversity and photo-physiological performance than the degraded one, implying that degraded reefs may not only be characterized by the benthic cover and/or their health status b…
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: MOUNESHWAR SOONDUR
creator: DEEPEEKA KAULLYSING
creator: SUNDY RAMAH
creator: RANJEET BHAGOOLI
rights: Copyright (c) 2023 Indo Pacific Journal of Ocean Life
date: 2023-04-04
publication date: 2023-04-04
doi: 10.13057/oceanlife/o070112

Photo-physiological responses and thermal tolerance of regionally endemic/rare and morphologically different corals of the Western Indian Ocean
type: item
description: Abstract. Munbodhe V, Jeetun S, Ricot M, Jogee S, Kaullysing D, Bhagooli R. 2023. Photo-physiological responses and thermal tolerance of regionally endemic/rare and morphologically different corals of the Western Indian Ocean. Indo Pac J Ocean Life 7: 100-107. Intensification in climatic variations is causing major alteration in ecosystem functionalities and an overall decline in reef biodiversity. Underlying the ongoing cumulative threats and the vulnerability to biodiversity loss in the reefs, this study aims to determine the photo-physiological response and the thermal tolerances of the morphologically different coral species namely, Porites lutea, Porites cylindrica, Acropora hyacinthus, Galaxea fascicularis, Seriatopora hystrix including the two regionally endemics of the Western Indian Ocean, Acropora branchi and Pocillopora indiania. Coral fragments from three colonies per species were collected from the south and southeast of Mauritius Island and treated at 27°C, 30°C and 32°C for 19 hours. Using a diving Pulse-Amplitude-Modulated (D-PAM) fluorometer, the effective quantum yield at photosystem II (FPSII) was recorded from the coral fragments initially and following 3, 6 and 19 hours of treatment. This experiment determined the thermal threshold of the understudied A. branchi and P. indiania, and detected the unexpectedly enhanced thermal tolerance of S. hystrix and G. fascicularis. Overall, it provides a preliminary insight into potential thermal stress tolerance in some Mauritius corals and has shown that these corals might have strategized to enhance their thermo-resilience while others are still struggling to withstand such stresses. These findings on the thermal resilience of regionally endemic/rare and morphologically different coral species are essential for further reef conservation efforts and the selection of coral species for reef restoration.
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: VIKASH MUNBODHE
creator: SRUTI JEETUN
creator: MELANIE RICOT
creator: SHAKEEL JOGEE
creator: DEEPEEKA KAULLYSING
creator: Ranjeet Bhagooli
rights: Copyright (c) 2023 Indo Pacific Journal of Ocean Life
date: 2023-04-04
publication date: 2023-04-04
doi: 10.13057/oceanlife/o070111

The red coralline alga Hydrolithon onkodes, an attractor of coral larvae, is photosynthetically more susceptible to thermal stress than Lithophyllum incrustans
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description: Abstract. Perrine MJS, Mundil S, Kaullysing D, Bhagooli R. 2023. The red coralline alga Hydrolithon onkodes, an attractor of coral larvae, is photosynthetically more susceptible to thermal stress than Lithophyllum incrustans. Indo Pac J Ocean Life 7: 91-99. Red Coralline Algae (RCAs) are important components of coral reefs and are involved in reef-building via calcification, cementation, the synthesis of anti-fouling compounds and of chemicals to aid recruitment, settlement and metamorphosis of reef species. This study aimed to investigate the distribution of RCAs at four sites around Mauritius Island and the effects of thermal stress on the effective photosynthetic yield of photosystem II (FPSII) of two species of RCA namely, Lithophyllum incrustans (Philippi, 1837) and Hydrolithon onkodes, known to attract coral larvae. Out of the nine RCA species observed, two non-geniculate RCAs, H. onkodes and L. incrustans, were among the most dominant, especially at the lagoonal and reef zones of the four studied sites Flic en Flac, Belle Mare, Trou aux Biches and Flat Island. These two RCAs were collected, acclimated for 24 hours on a 12h:12h dark-light cycle and then exposed to 27°C, 30°C and 33°C for 3 (T3), 6 (T6) and 19 (T19) hours. After 3, 6 and 19 hours, relative change in FPSII compared to initial (T0) was used for comparison among tested species. At 27°C the FPSII did not fluctuate significantly during the experiment for both RCAs. At a temperature 30°C only H. onkodes significantly decreased from 0.541 ± 0.54 at T0 to 0.445 ± 0.116 at T19. At 33°C, L. incrustans showed a significant decline of 24.82 ± 7.4% while H. onkodes decreased by 90 ± 12.6%. Visual observations revealed that H. onkodes changed from the initial healthy-looking color of light grey to pale purple after thermal exposure. These findings indicate that the coral larvae-attracting H. onkodes is more susceptible than the L. incrustans to thermal stress, implying subsequent possible impacts on coral re…
subject: Articles
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subject: Array
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creator: MARIE JEAN SYLVIO PERRINE
creator: SARVESH MUNDIL
creator: DEEPEEKA KAULLYSING
creator: RANJEET BHAGOOLI
rights: Copyright (c) 2023 Indo Pacific Journal of Ocean Life
date: 2023-03-02
publication date: 2023-03-02
doi: 10.13057/oceanlife/o070110

Antioxidant and photo-physiological acclimatisation in tropical macroalgae at sites with distinct nutrient levels
type: item
description: Abstract. Gopeechund A, Bhagooli R, Neergheen VS, Bahorun T. 2023. Antioxidant and photo-physiological acclimatisation in tropical macroalgae at sites with distinct nutrient levels. Indo Pac J Ocean Life 7: 79-90. The antioxidant efficacy, Total Phenolic Contents (TPC) and Total Flavonoid Contents (TFC) were investigated at Gis Gris with Lower Nutrient levels (LN site) and Bain boeuf with Higher Nutrient levels (HN site) around Mauritius Island. A field-based 7-days transplantation manipulation of Turbinaria ornata, Gracilaria salicornia and Sargassum obovatum between HN and LN sites was conducted to test the impact of different nutrient conditions on their physiology. All the species had lower antioxidant efficacies, TPC and TFC at LN compared to HN site. The glutathione peroxidase and catalase were more sensitive at reflecting the lower oxidative stress at LN site and acclimatisation to oxidative stress occurring at the HN site. ETRmax and ? were significantly higher in all species at HN site. The quantum yield Fv/Fm increased in S. obovatum only, after 7 days of transplantation at HN site, while, T. ornata and G. salicornia had similar adaptability to photo-physiological stress at both sites. NPQmax decreased in S. obovatum but increased in T. ornata transplanted to HN site, indicating increased photo-protection at HN site. Lagoons with higher nutrient levels may enhance macroalgal capacity to deal with oxidative stress, thus lowering the need for further photo-protection.
subject: Articles
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subject: Array
  topic: keywords
creator: ARVIND GOPEECHUND
creator: RANJEET BHAGOOLI
creator: VIDUSHI SHRADHA NEERGHEEN
creator: THEESHAN BAHORUN
rights: Copyright (c) 2023 Indo Pacific Journal of Ocean Life
date: 2023-03-02
publication date: 2023-03-02
doi: 10.13057/oceanlife/o070109

Assessment of physicochemical parameters and heavy metals contamination in Korle and Kpeshie Lagoons, Ghana
type: item
description: Abstract. Clottey CA, Nukpezah D, Koranteng SS, Darko DA. 2021. Assessment of physicochemical parameters and heavy metals contamination in Korle and Kpeshie Lagoons, Ghana. Indo Pac J Ocean Life 6: 36-50. Lagoons are highly productive coastal systems that could provide natural services to the surrounding ecosystem; however, their pollutions cause adverse changes in their natural environment. Korle and Kpeshie Lagoons in Ghana receive waste from industries and municipal sewage. Controlling and monitoring contaminants in these systems is very important to environmental protection. This study examined the presence of heavy metals (arsenic, chromium, copper, cadmium, lead, and zinc) in sediments, crabs (Callinectes amnicola), and fish (Sarotherodon melanotheron) at Kpeshie and Korle Lagoons. Although lagoons are highly productive coastal systems that offer ecosystem services, their pollution has a negative impact on the surrounding environment. Municipal sewage and industrial waste are dumped into Ghana's Korle and Kpeshie Lagoons. Contaminant monitoring and control in these systems are crucial for environmental protection. The study compared the concentrations of the heavy metals (arsenic, cadmium, copper, chromium, lead, and zinc) in sediments, crabs (C. amnicola), and fish (S. melanotheron) at Kpeshie and Korle Lagoons to the environmental standards set by international organizations like the WHO and US EPA. The sediments from the Korle and Kpeshie Lagoons had traces of contamination in the following metal concentrations in S. melanotheron: cadmium, copper, zinc, lead, chromium, and arsenic, in that order: As, 0.397 ± 0.07; Cd, 1.10 ± 1.31; Pb, 1.227 ± 5.77; Cu, 3.494 ± 4.56; Cr, 5.895 ± 9.76; Zn, 23.225 ± 10.93, and in C. amnicola: As, 0.288 ± 0.07 mgkg-1; Cd, 4.60 ± 2.69 mgkg-1; Cr, 39.521 ± 55.89 mgkg-1; Cu, 31.085 ± 16.26 mgkg-1; Pb, 10.902 ± 12.95 mgkg-1; Zn, 36.042 ± 17.8 mgkg-1. The sediments are severely polluted with Cd and Pb, according to pollution indices…
subject: Articles
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subject: Array
  topic: keywords
creator: CAROLYNE ALBERTA CLOTTEY
creator: DANIEL NUKPEZAH
creator: SAMUEL S. KORANTENG
creator: DANIEL A. DARKO
rights: Copyright (c) 2023 Indo Pacific Journal of Ocean Life
date: 2022-06-30
publication date: 2022-06-30
doi: 10.13057/oceanlife/o060105

Litter assessment at the Sakumono and La Pleasure coastal areas, Ghana
type: item
description: Abstract. Adjei O, Lamptey AM. 2021. Litter assessment at the Sakumono and La Pleasure coastal areas, Ghana. Indo Pac J Ocean Life 5: 83-91. Ghana has a difficult time managing waste, especially in the cities. The situation is even made worse in coastal urban areas by population growth. When the rains fall and wash the solid wastes downstream, most waste produced and lost inland ends up in the coastal and marine environment. In addition, revelers who use the areas for entertainment and tourism also contribute to the waste created. The Sakumono and La Pleasure Beaches in the Greater Accra Region served as the sites for this study. This study's primary goal was to assess how much waste was on the beaches at the two locations. The study made use of a transect measuring 1,000 m2. A total of 2,697 litter items were collected from the two beaches. During the survey, 50.07 kg from both sites comprised the entire weight of the litter collected. Comparatively, the amount of waste collected from La Pleasure was 18.28 kg, which accounted for 36.51% of the total amount of litter surveyed. The amount of trash collected from Sakumono Beach was 31.79 kg, representing 63.49% of the total litter surveyed. Plants were discovered to be the most prevalent material by weight and number. Plastics accounted for 72.56% of the total composition for both beaches, or 1,975 items, and 65.53% of the total composition, or 32.81 kg, respectively. In comparison to La Pleasure Beach, Sakumono Beach was found to be more littered. An alpha value of 0.05 (a p-value = 0.02) indicated this was significant. Ongoing monitoring, intensive education, and sensible policy initiatives are still essential to address the beach litter problem along Ghana's coasts.
subject: Articles
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subject: Array
  topic: keywords
creator: OBED ADJEI
creator: ANGELA MANEKUOR LAMPTEY
rights: Copyright (c) 2023 Indo Pacific Journal of Ocean Life
date: 2021-11-19
publication date: 2021-11-19
doi: 10.13057/oceanlife/o050205

Concentration of heavy metal in sediment, water, and fish from Ankobra and Tano River Estuaries, Ghana
type: item
description: Abstract. Awuah GK, Mensah JA, Fobil JN. 2020. Concentration of heavy metal in sediment, water, and fish from Ankobra and Tano River Estuaries, Ghana. Ocean Life 3: 94-101. The heavy metals arsenic (As), mercury (Hg), and lead (Pb) are all poisonous and found in nature. The increase in their concentrations, however, is a result of human activities that pose a danger to both aquatic life and humans. The researchers set out to measure the levels of arsenic (As), hexavalent chromium (Hg), and lead (Pb) in sediment, water, and fish from the Ankobra and Tano Rivers in Ghana's Western Region. That was thought to be heavily polluted due to human activity, particularly artisanal gold mining. To assess the prevalence of As, Hg, and Pb in fish and the aquatic media (water and sediment) in the Tano of Jaway Wharf - Ellenda and Ankobra River of Sanwoma basins, an analytical cross-sectional study was carried out. The Atomic Absorption Spectrophotometer (AAS) Pinnacle 900T was used to determine the levels of As, Hg, and Pb in the tissues (muscles) of "Ekpoke" Ctenopoma kingsleyae, "Adwene" Clarias gariepinus, "Nzerma" Pomadasys jubelini, "Bile" Parachanna obscura, "Ekpoke" Sarotherodon galilaues, "Ekpoke" Sarotherodon melanotheron, and "Senzeke" Parapenaeus longirostris (n=53), water samples (n=30), and sediment samples (n=25) (Perkin Elmer, USA). STATA version 13 and the Excel spreadsheet from Microsoft version 10 were used for the statistical Analysis (StataCorps LP, Chicago, USA). Hg, As, and Pb levels were the highest in all the analyzed locations. In general, Hg (2.09 ± 1.29 mg/kg) and As (2.80 ± 1.52 mg/kg) were found in the highest amounts in fish, next by sediment (1.40 ± 1.78 mg/kg) and (0.61 ± 0.40 mg/kg), and water (0.09 ± 0.36 mg/L) and (0.06 ± 0.05 mg/L), respectively. Sediment (1.46 ± 4.26 mg/kg), water (0.14 ± 0.10 mg/L), and fish (0.11 ± 0.11 mg/kg) all had higher Pb concentrations than the other two. The total heavy metal variability in soil, water, and fish was …
subject: Articles
  topic: section
subject: Array
  topic: keywords
creator: GILBERT KOFI AWUAH
creator: JOHN ARKO MENSAH
creator: JULIUS N. FOBIL
rights: Copyright (c) 2023 Indo Pacific Journal of Ocean Life
date: 2020-12-30
publication date: 2020-12-30
doi: 10.13057/oceanlife/o040205