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Journal of Tropical Marine Science

jtms
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Published by Universitas Bangka Belitung

ISSN : 26232227 EISSN : 26232235 DOI : https://doi.org/10.33019/jour.trop.mar.sci

Core Subject : Science, Agriculture, Social,

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science

Journal of Tropical Marine Science (JTMS, e-ISSN: 2623-2235) adalah terbitan open-access diterbitkan oleh Program Studi Ilmu Kelautan, Universitas Bangka Belitung, Indonesia. Journal of Tropical Marine Science menyediakan media daring untuk mempublikasikan artikel ilmiah dari hasil penelitian dan pengembangan di bidang kelautan dan oseanografi.

Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)

Articles 149 Documents

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Dampak Penambangan Timah di Laut Terhadap Ekosistem Terumbu Karang di Pulau Pemuja dan Malang Duyung, Kabupaten Bangka Barat, Provinsi Kepulauan Bangka Belitung Indra Ambalika Syari; Mohammad Agung Nugraha; Mu’alimah Hudatwi
Journal of Tropical Marine Science Vol 5 No 1 (2022): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

The Province of the Bangka Belitung Islands has an ocean area of 79.9% which has the potential for fisheries and tourism as well as tin mining in the sea. This research was conducted in October 2020 in the coral reef ecosystem of Pemuja Island (near to the coastal) and Malang Duyung Coral (far to the coastal), West Bangka Regency. The method used is Line Intercept Transect (LIT). The results showed that the condition of the coral reefs on Pulau Pemuja was categorized as "damaged" with a live coral cover of 16.50% which was estimated to be due to the impact of tin mining in the sea, which was marked by a high mud cover (silt) of 48.698%. Coral Mortality Index (IMK) value of 0.75 which indicates the number of corals that died due to mud cover. The condition of coral reefs in Malang Duyung is in the "Good" category with live coral cover of 69.17%. Malang Duyung coral reefs are still affected by mining, which is indicated by the presence of a mud cover of 10.833% while the IM value of 0.15 also indicates that dead coral is still being found. The results showed that the composition of dead coral covered with is an impact of offshore tin mining. Mining locations near the coastal area have a greater impact than those far from the coastal.

Struktur Komunitas Makrozoobentos Pada Sedimen Permukaan Pantai Sampur, Kabupaten Bangka Tengah Kasi Sastra; Mohammad Agung Nugraha; Aditya Pamungkas
Journal of Tropical Marine Science Vol 5 No 1 (2022): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

Sampur Beach is one of the beaches in Central Bangka Regency with a tin mining area and capture fisheries. Macrozoobenthos is a relatively large basic object, which is more than 1 mm. This study aims to determine the structure of the macrozoobenthos community (indices of diversity, uniformity, and dominance) on the surface sediments of Sampur Beach, Central Bangka Regency. This research was conducted in February 2021 at Sampur Beach, using a purposive sampling method of 5 stations (3 times in a row). Sampling was carried out using an Ekman grab. The results showed that on the surface sediments of Sampur Beach there were 163 individuals of 12 species from the class Bivalvia and Gastropods spread over 5 observations. The density of macrozoobenthos ranged from 375 - 1525 individuals/m2 and the species composition ranged from 2 - 88%. At the study site, the diversity index (H) values ranged from 0.503 to 1.382, the uniformity index (E) ranged from 0.312 to 0.713, and the dominance index ranged from 0.355 to 0.788. This study shows that the level of macrozoobenthos diversity in the surface sediments of Sampur Beach is low to moderate, the level of uniformity is low to high, and there is no dominant species.

Struktur Komunitas Padang Lamun Di Perairan Desa Sadai Kabupaten Bangka Selatan Okto Supratman; Fatria Sando; Supratman Okto; Sudirman Adibrata
Journal of Tropical Marine Science Vol 5 No 2 (2022): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

This study aims to determine the conditions of the seagrass beds ecosystem, the physical and chemical conditions, that can be database in the waters of Sadai Village, South Bangka Regency. This research was conducted in July 2019. The data analyzed included: Seagrass cover, seagrass density, seagrass frequency, and Importance Value Index (IVI). The value of seagrass stands in Sadai Village waters is relatively rare. Based on the results obtained, Enhalus acoroides is a type of seagrass that has the ability to adapt well to various water conditions so that it is fairly evenly distributed in the five observation stations. The total percentage of total cover in Sadai Village waters ranges from 5.66% -27.37%. It is known that the highest INP value was also found in the Halodule uninervis seagrass species. Thus, it means that the Halodule uninervis seagrass in Sadai waters has an important meaning as a key species related to the condition of the seagrass community in Sadai Village waters. The seagrass ecosystem in Sadai Village waters is used by local residents as a place to find fish, snails and shellfish. Excessive human activity on the land above can increase the sediment load on water bodies which will result in high turbidity which has the potential to reduce light penetration. This can cause disruption to the primary productivity of the seagrass ecosystem because seagrass requires high light intensity for photosynthesis.

Identifikasi Nilai Ekonomi Ekosistem Hutan Mangrove Di Dusun Tanjung Tedung Kabupaten Bangka Tengah Fitri Purnamasari; Wahyu Adi; Arief Febrianto
Journal of Tropical Marine Science Vol 5 No 2 (2022): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

In the district of Tanjung Tedung there is mangrove ecosystem that grows along the coast of the district. The mangrove ecosystem in the Tanjung Tedung area is used by the community for fishing, shellfish cultivation and others, So that there is an economic value for the mangrove ecosystem in the district of Tanjung Tedung. This research was conducted from September 2018 to October 2019 in the Tanjung Tedung district, Tanjung Pura Village, Sungaiselan sun-district, Central Bangka Regency. As for the data that has been collected it consists of direct use value, indirect use value, option value, existence value and total economic value. Bases on the results of the identification of the economic benefist of the mangrove forest ecosystem the results for the direct use value of IDR 5.987.588.750,-/year, indirect use value IDR 3.780.569.250,-/year, option value IDR 376.532.100,-/year, exsistence value IDR 4.421.300.000,-/year, and fot the total economic value is IDR 14.565.990.100,-/year. The results of identification and economic valuation that have been carried out can provide an idea that the ecological and soci-economic benefits of mangrove ecosystem are quite large foe local communities.

Konsentrasi Dan Distribusi Karbon Organik Total (TOC), Total Nitrogen (TN) Dan Rasio C/N Pada Sedimen Di Perairan Kawasan Pelabuhan Pangkal Balam, Bangka Lara Sukma Sadewi; Mohammad Agung Nugraha; Irma Akhrianti
Journal of Tropical Marine Science Vol 5 No 2 (2022): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

Total organic carbon (TOC), total nitrogen (TN) and C/N ratio are organic matter present in the waters. The waters of Pangkal balam port area has a fairly dense community activity such as ports, aquaculture, PLTU and settlements. The waste from the activity enters the water column so that it can affect the abundance of the waters, therefore research on organic matter needs to be carried out in the waters of the Pangkal Balam Port Area. This study aims to determine the distribution pattern of TOC, TN and sediment C/N ratio in the waters of the Pangkal Balam Port Area. Knowing the source of organic matter input in the waters of the Pangkal Balam Port Area and knowing the relationship between TOC and fine sediment. Determination of research stations using stratified purposive sampling method. The sampling time was carried out in February 2021 in the waters of the Pangkal Balam Port Area, Bangka. TOC and TN concentrations were analyzed using the Walkley Black method and the Kjeldahl method. The TOC concentration ranges from 0.59-9.79% which is categorized as low to high, while the TN concentration scores between 0.01-0.06% which is classified as low to high and the C/N ratio is and 59-244.75 which is explain the main source of organic material input from terrestrial. TOC with fine sediment has a positive relationship and a weak effect (r = 0.472) and the coefficient of determination (R2) is 0.223%.

Optimasi pH Dan Salinitas Media Kultur Terhadap Pertumbuhan Dan Aktivitas Protease Ektraseluler Bakteri Bacillus Firmus Dari Ekosistem Padang Lamun Nusa Lembongan – Bali. Muhammad Zainuddin; Delianis Pringgenies; Ocky Karna Radjasa; Haeruddin Haeruddin; Aninditia Sabdaningsih; Vivi Endar Herawati
Journal of Tropical Marine Science Vol 5 No 2 (2022): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

Sponges are sponges that live on the bottom of the water. Sponges have a symbiotic relationship with bacteria. Chalinula pseudomolitba is a type of sponge that lives in the waters of Nusa Lembongan Bali and has the symbiotic bacterium Bacillus firmus. Bacillus firmus has proteolytic activity by producing extracellular protease enzymes. These bacteria have the potential to be developed into probiotics in remediating protein in organic waste left over from shrimp pond feed. In an effort to produce Bacillus firmus bacteria for probiotics, it is necessary to optimize the pH and salinity of the culture media. The purpose of this study was to optimize the pH and salinity of Bacillus firmus bacterial culture media from the symbiont sponge Chalinula pseudomolitba which has proteolytic activity. The research used aboratory experimental method. Research has succeeded in conducting tests to optimize pH and salinity of culture media on the growth and activity of extracellular protease enzymes in bacteria. The results showed that Bacillus firmus had the best growth rate and protease activity under culture conditions with a pH of 8 with values of 0,174 and 31,763 IU/ml, respectively. In addition, it also has the best growth rate and protease activity at media salinity of 30 ppt with values of 0,186 and 35,278 IU/ml.

Molecular Identification of Grouper Fish (Perciformes: Serranidae) Landed From Pangpang Bay, Banyuwangi Firdha Farah Pramesti; Laksmi Sulmartiwi; Sapto Andriyono
Journal of Tropical Marine Science Vol 5 No 2 (2022): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

The Pangpang Bay Banyuwangi has a high potential for fisheries, processing and capturing fisheries, especially the order Perciformes of the families Carangidae, Lutjanidae and Serranidae. Grouper (Serranidae) is one of the high-economic marine fish commodities. However, the grouper fishing data in this area is only known as grouper without knowing the type of species. It is challenging to identify grouper species because groupers have a high degree of morphological similarity and colour variation. Therefore, molecular identification is necessary to determine the type of grouper in this region. This study aims to identify the grouper species that landed from Pangpang Bay based on DNA barcoding. In addition, phylogenetic tree analysis between grouper species (Serranidae) was carried out, and genetic distance analysis of the identified species was compared to the NCBI database. Morphological observations on groupers were carried out first, and fish meat samples were taken for experiments on molecular identification. The results of molecular-based identification revealed two grouper species Epinephelus coioides and Cephalopholis miniata. The results of phylogenetic tree reconstruction of the two groupers form a separate clade. The genetic distance between Epinephelus coioides ranged from 0.00-0.122, while the species of Cephalopholis miniata had a genetic distance of 0.00-0.002.

Pemanfaatan Citra Sentinel 2A Untuk Pemetaan Sebaran Ekosistem Lamun Di Perairan Pulau Panjang, Bangka Tengah Salmia Septiani; Irma Akhrianti; Aditya Pamungkas
Journal of Tropical Marine Science Vol 5 No 2 (2022): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

Remote sensing techniques by utilizing satellite imagery can provide many advantagesin assessing information about the distribution of seagrass ecosystem in the Panjang Island waters. By using Sentinel 2A satellite imagery with a spatial resolution of 10 m, this study will provide information about the condition of seagrass beds in Panjang Island. The next step is the application of the Depth Invariant Index (DII) algorithm or the water column correction with the Lyzenga algorithm on the image. Based on the results of the supervised classification in ENVI 5.2 software, the color hue of each class shows a different color. There are six classes, namely land, seagrass, rubble / coral fragments, reef coral, sand and sea. The area of seagrass has an area of about 70.24 ha. There are 7 types of seagrass found in the waters of Panjang Island. Among them are, Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Halophila ovalis, Halodule uninervis, Syringodium isoetifolium, and Halodule pinifolia. The percentage of seagrass cover based on the results of the field survey has an average of 9.84% which is categorized as poor/damaged. The lowest percentage with a value of 3.48% is at station 3 and the highest with a value of 12.91% is at station 2.

Pengaruh Penambahan Kalsium Pada Media Kultur Salinitas Rendah Terhadap Performa Udang Vaname Litopenaeus vannamei Supono Supono; Destriana Puspitasari; Munti Sarida
Journal of Tropical Marine Science Vol 5 No 2 (2022): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

Kalsium merupakan salah satu makromineral yang berperan penting dalam proses pengerasan kulit udang pasca molting. Pada tambak salinitas rendah, sering mengalami kekurangan kalsium yang dapat berdampak pada kegagalan molting udang bahkan menyebabkan kematian. Penelitian ini bertujuan untuk mengkaji pertumbuhan, tingkat kelangsungan hidup, dan rasio konversi pakan udang vaname (Litopenaeus vannamei) yang dipelihara pada media kultur salinitas rendah dengan penambahan konsentrasi mineral kalsium berbeda. Penelitian ini dilakukan pada media bersalinitas 5 ppt, menggunakan rancangan acak lengkap (RAL) dengan 4 perlakuan dan 3 ulangan. Perlakuan tersebut berupa penambahan makromineral kalsium yang berbeda, yaitu: A (0 mg/L), B (50 mg/L), C (100 mg/L), dan D (150 mg/L). Hasil penelitian menunjukkan bahwa penambahan kalsium yang berbeda pada media salinitas rendah berpengaruh terhadap pertumbuhan, tingkat kelangsungan hidup, dan rasio konversi pakan udang vaname. Pertumbuhan terbaik terjadi pada perlakuan penambahan kalsium 0 mg/L (kontrol) yaitu sebesar 0,56±0,18 g, sementara tingkat kelangsungan hidup dan konversi pakan terbaik terjadi pada perlakuan 50 mg/L yaitu 54,3±0,38% dan 1,4±0,1.

Komposisi Vegetasi Mangrove Di Pulau Pahawang, Provinsi Lampung Annisa Putri Nabila; Indra Gumay Febryano; Rahmat Safe’i; Rudi Hilmanto
Journal of Tropical Marine Science Vol 5 No 2 (2022): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

The composition of mangrove vegetation on small islands is very important related to its sustainability. The purpose of this study was to determine the composition of mangrove vegetation on Pahawang Island, Lampung Province. Data collection was carried out based on the Forest Health Monitoring (FHM) technique on the mangrove FHM plot cluster. Data analysis by calculating relative frequency, relative dominance, and relative density to get the Important Value Index (INP). The results showed that three species were found that compose the composition of mangrove forest vegetation, namely Rhizophora mucronata, Rhizophora stylosa, and Rhizophora apiculata. The INP values of each species were Rhizophora mucronata of 160,83%, Rhizophora stylosa of 71,54%, and Rhizophora apiculata of 67,64%. In general, the type of Rhizophora mucronata has a wide distribution and has an impact on forest stability. Therefore, Rhizophora mucronata plays an important role as a plant that is resistant to ocean currents due to coastal land erosion, where various marine biota live, absorbs carbon dioxide gas (CO2) and produces oxygen (O2) in that location. The government is expected to carry out mangrove protection activities, so that the function of the mangroves is maintained properly.

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Home Page

OAI Link

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Phone +628122902361

Journal Mail Official jtms.ubb@gmail.com

Editorial Address Gedung Teladan Fakultas Pertanian Perikanan dan Biologi Desa Balunijuk, Kecamatan Merawang, Kabupaten Bangka, Prov. Kepulauan Bangka Belitung.

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Contact Name
Muhammad Agung Nugraha

Contact Email
-

Phone
+628122902361

Journal Mail Official
jtms.ubb@gmail.com

Editorial Address
Gedung Teladan Fakultas Pertanian Perikanan dan Biologi Desa Balunijuk, Kecamatan Merawang, Kabupaten Bangka, Prov. Kepulauan Bangka Belitung.

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