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All Journal BULETIN OSEANOGRAFI MARINA Acta Aquatica: Aquatic Sciences Journal Journal of Marine Studies Jurnal Perikanan Mantis Journal of Fisheries
Leni, Yusyam
Program Studi Pemanfaatan Sumberdaya Perikanan, Fakultas Peternakan, Universitas Jambi
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Environmental Science Immunology & microbiology Materials Science & Nanotechnology Social Sciences Other

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Gastropoda test family of Neritidae as bioindicator to health status of mangrove forest Pulau Tunda Serang Banten, Indonesia Rika Anggraini; Syahrial Syahrial; Ita Karlina; Wandesi Mariati; Dandi Saleky; Yusyam Leni
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 8: No. 1 (April 2021)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v8i1.3829

Abstract

Uji gastropoda famili Neritidae terhadap habitatnya di ekosistem mangrove dilakukan di dua stasiun pengamatan di Pulau Tunda Serang Banten pada Januari 2014. Penelitian ini bertujuan untuk mengkaji dan menganalisis gastropoda famili Neritidae terhadap kesehatan hutan mangrove Pulau Tunda Serang Banten. . Pengumpulan data kondisi gastropoda famili Neritidae dilakukan dengan menggunakan plot berukuran 1 x 1 m dan dipasang pada plot transek vegetasi mangrove berukuran 10 x 10 m, dimana transek garis dan plot vegetasi mangrove ditarik dari titik acuan (tegakan mangrove bagian luar) dan tegak lurus terhadap garis pantai ke daratan.Kemudian keanekaragaman, dominansi, dan keseragaman gastropoda famili Neritidae dan hutan bakau Pulau Tunda Serang Banten dianalisis menggunakan indeks keanekaragaman Shannon-Weaver. Indeks dominasi Simpson dan indeks keseragaman Shannon-Weaver. Sedangkan hubungan kerapatan gastropoda famili Neritidae dan kerapatan hutan bakau Pulau Tunda Serang Banten dilakukan dengan menggunakan regresi linier sederhana. Hasil penelitian menunjukkan bahwa kerapatan gastropoda famili Neritidae lebih tinggi dan lebih banyak ditemukan di mangrove kerapatan tinggi. Kemudian keanekaragaman dan dominasi gastropoda famili Neritidae rendah, sedangkan keseragamannya dalam keadaan seimbang.Selain itu, penelitian ini juga mengungkapkan bahwa semakin tinggi kerapatan hutan mangrove maka kerapatan gastropoda famili Neritidae juga semakin tinggi, sehingga gastropoda famili Neritidae dapat digunakan sebagai bioindikator dalam menentukan kesehatan hutan mangrove.Sedangkan hubungan kerapatan gastropoda famili Neritidae dan kerapatan hutan mangrove Pulau Tunda Serang Banten dilakukan dengan menggunakan regresi linier sederhana. Hasil penelitian menunjukkan bahwa kerapatan gastropoda famili Neritidae lebih tinggi dan lebih banyak spesies ditemukan pada mangrove kerapatan tinggi. Kemudian keanekaragaman dan dominasi gastropoda famili Neritidae rendah, sedangkan keseragamannya dalam keadaan seimbang. Selain itu, penelitian ini juga mengungkapkan bahwa semakin tinggi kerapatan hutan mangrove maka kerapatan gastropoda famili Neritidae juga semakin tinggi, sehingga gastropoda famili Neritidae dapat digunakan sebagai bioindikator dalam menentukan kesehatan hutan mangrove. Sedangkan hubungan kerapatan gastropoda famili Neritidae dan kerapatan hutan mangrove Pulau Tunda Serang Banten dilakukan dengan menggunakan regresi linier sederhana. Hasil penelitian menunjukkan bahwa kerapatan gastropoda famili Neritidae lebih tinggi dan lebih banyak spesies ditemukan pada mangrove kerapatan tinggi. Kemudian keanekaragaman dan dominasi gastropoda famili Neritidae rendah, sedangkan keseragamannya dalam keadaan seimbang. Selain itu, penelitian ini juga mengungkapkan bahwa semakin tinggi kerapatan hutan mangrove maka kerapatan gastropoda famili Neritidae juga semakin tinggi, sehingga gastropoda famili Neritidae dapat digunakan sebagai bioindikator dalam menentukan kesehatan hutan mangrove. Kemudian keanekaragaman dan dominasi gastropoda famili Neritidae rendah, sedangkan keseragamannya dalam keadaan seimbang. Selain itu, penelitian ini juga mengungkapkan bahwa semakin tinggi kerapatan hutan mangrove maka kerapatan gastropoda famili Neritidae juga semakin tinggi, sehingga gastropoda famili Neritidae dapat digunakan sebagai bioindikator dalam menentukan kesehatan hutan mangrove. Kemudian keanekaragaman dan dominasi gastropoda famili Neritidae rendah, sedangkan keseragamannya dalam keadaan seimbang. Selain itu, penelitian ini juga mengungkapkan bahwa semakin tinggi kerapatan hutan mangrove maka kerapatan gastropoda famili Neritidae juga semakin tinggi, sehingga gastropoda famili Neritidae dapat digunakan sebagai bioindikator dalam menentukan kesehatan hutan mangrove.
Structural characterization and species composition of mangrove vegetation in Lhokseumawe, Indonesia: Insight from multivariate analysis Adinda Aulia Putri; Erlangga Erlangga; Syahrial Syahrial; Riri Ezraneti; Hayatun Nufus; Yusyam Leni; Febrina Rolin
Journal of Marine Studies Volume 1, Issue 3 (November, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/joms.v1i3.19052

Abstract

The structure of the plant community significantly influences the equilibrium of the surrounding environment, affecting the trophic interactions within its ecosystem. The investigation of mangrove vegetation in Cut Mamplam village was carried out in September 2021 to determine the condition and structural characteristics of the mangrove ecosystem by multivariate analysis. The mangrove vegetation in Cut Mamplam Village was sampled at three observation stations by establishing a transect parallel to the coast. Subsequently, the community structure was examined and assessed using cluster analysis and nonmetric multidimensional scaling using the PRIMER v7 software. The study findings indicate that the mangrove forest vegetation in Cut Mamplam Village consists of five species from three families. Avicennia alba, A. lanata, Bruguiera gymnorrhiza, Rhizophora mucronata and Sonneratia alba. The highest density of mangrove vegetation was observed in A. alba in all categories: trees (616.67 ind/ha), seedlings (833.33 ind/ha) and saplings (66666.67 ind/ha). Additionally, the highest important value index (IVI) was recorded in A. alba for all categories: trees (232.16%), seedlings (102.40%), and saplings (228.43%). A similarity of mangrove density between species was noted at 60%, resulting in the formation of two distinct groups. Regarding the basal area, the vegetation stands of A. alba and A. lanata exhibited the highest values (280.61 and 266.03 m2/ha, respectively). The similarity of basal area among the observed species was 20%, resulting in the formation of two distinct groups. Additionally, Station II, classified as having mature vegetation, demonstrated a maturity similarity of 80% between observation stations.
POTENTIAL AND QUALITY OF FISHERY PRODUCTS IN EAST NUSA TENGGARA Riris Roiska; Reni Lobo; Tri Wulandari; Febrina Rolin; Yusyam Leni; Dwinda Pangentasari; Ainun Rohmawati Bareta
Jurnal Perikanan Unram Vol 14 No 4 (2024): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v14i4.1248

Abstract

Indonesia is a country that has quite large marine and fisheries resources and East Nusa Tenggara is one of the provinces in Indonesia that has very large fisheries resources, for this reason further exploration is being carried out to utilize these fisheries resources for both the domestic and export markets. This research is to find out about the marine and fisheries potential in East Nusa Tenggara and the quality of these fishery products by making direct observations at the Fish Quarantine Station for Quality Control and Safety of Fishery Products (SKIPM) Kupang, East Nusa Tenggara to find out about the fishery products that are trafficked. from the SKIPM. The results of the research show that East Nusa Tenggara has a very large and varied fisheries potential such as Anggoli, Skipjack, Cakalang, Crab Meat, Sweet Lip Fish, Grouper, Red Snapper, Onaga, Hermit crab, Mud Crab, Lobster, Beef Sei Tuna, Shark Fin, Mutira snails, Mackerel, Sea Cucumbers, Tuna Loin, Fan Shrimp, Ronggeng Shrimp, Seaweed and among these products Seaweed and Skipjack tuna are the highest number of fishery products trafficked from SKIPM Kupang, East Nusa Tenggara. The research results also show that 19 products originating from several fish processing units in East Nusa Tenggara province have met the maximum limit criteria for Escherichia coli contamination, namely <3 MPN/g with sensory pass quality or were still suitable and safe for consumption or marketing.
ANTIOXIDANT POTENTIAL OF BIOACTIVE COMPOUNDS IN ETHANOL EXTRACTS OF SEAGRASS AND MACROALGAE FROM LAMPUNG WATERS Bareta, Ainun Rohmawati; Widiastuti, Endang Linirin; Nurcahyani, Nuning; Roiska, Riris; Leni, Yusyam
Jurnal Perikanan Unram Vol 15 No 1 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i1.1418

Abstract

The sea in Indonesia covers 75% of its total land area. According to data from the Ministry of Marine Affairs and Fisheries (2019), Indonesia has approximately 5.8 million km² of water area out of a total territory of 7.81 million km². The biodiversity in Indonesia's coastal areas is utilized by coastal communities in their daily lives. Coastal resources also have potential in the health sector, such as seagrass, macroalgae, and taurine, which can be used as raw materials for natural medicine. The purpose of this study is to analyze the antioxidant potential based on the IC50 value of taurine, ethanol extracts of the seagrasses Enhalus acoroides and Cymodocea rotundata, as well as the macroalgae Padina australis and Sargassum duplicatum. The method used is the antioxidant activity assay using DPPH (2,2-Diphenyl-1-picrylhydrazyl). The results of this study indicate that, after testing with DPPH, only the ethanol extract of Cymodocea rotundata had an IC50 value of < 200 µg/mL, specifically -652.95 µg/mL, whereas the IC50 values of taurine, the ethanol extract of Enhalus acoroides, and the ethanol extracts of the macroalgae Padina australis and Sargassum duplicatum were > 200 µg/mL, indicating no antioxidant activity. In conclusion, only the ethanol extract of Cymodocea rotundata has the potential to be a candidate for antioxidant raw material.
ANALISIS SEBARAN TOTAL SUSPENDED SOLID (TSS) MENGGUNAKAN CITRA SENTINEL-2 DI PERAIRAN SADU KABUPATEN TANJUNG JABUNG TIMUR, PROVINSI JAMBI Anang Kurnianto; Muhammad Hafidz Ibnu Khaldun; Yusyam Leni; Hamzah Hamzah
Mantis Journal of Fisheries Vol. 2 No. 01 (2025): April 2025
Publisher : Department of Fisheries, Animal Science Faculty, Universitas Jambi.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/mjf.v2i01.41828

Abstract

Kualitas perairan mempengaruhi proses metabolisme biota di suatu perairan yang dapat mempengaruhi kondisi ekosistem perairan. Kualitas air akan terganggu karena peningkatan konsentrasi TSS yang dapat menurunkan hasil tangkapan ikan khususnya di Perairan Sadu yang memiliki potensi perikanan yang tinggi.  Pemantauan distribusi TSS perlu dilakukan, dengan menggunakan Citra Sentinel 2 agar pemantauan menjadi efisien. Metode yang digunakan dalam penelitian ini adalah analisis citra digital dengan pemrosesan berbasis band indeks untuk menghitung konsentrasi TSS. Hasil penelitian menunjukkan adanya variasi sebaran TSS di perairan Sadu dari pesisir hingga lepas pantai, dengan konsentrasi berkisar 19.63 – 40.57 mg/L dan tersebar hingga 3,97 km menuju laut lepas. Konsentrasi tertinggi berada di muara Sungai Air Hitam Laut. Nilai TSS di perairan Sadu telah melampaui baku mutu perairan untuk budidaya konservasi dan wisata bahari karena lebih dari 20 mg/L. 
THE EFFECT OF SHADING ON THE LENGTH OF INCUBATION AND HATCHING SUCCESS OF GREEN TURTLE (Chelonia mydas) EGGS IN PANGUMBAHAN, SUKABUMI, WEST JAVA Leni, Yusyam; Zamani, Neviaty Putri; Natih, Nyoman Metta Nyanakumara; Bareta, Ainun Rohmawati; Roiska, Riris
Jurnal Perikanan Unram Vol 15 No 3 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i3.1527

Abstract

The condition of the nest greatly determines the success of turtle egg hatching. The success of turtle egg hatching, both naturally and artificially, is influenced by several factors such as the location of the nest, the depth of the nest, vegetation conditions, environmental temperature, humidity and the surrounding environment. This study aims to see the effect of shade on the length of the incubation period and the success of green turtle egg hatching in semi-natural nests. This study was conducted at Pangumbahan Nesting Beach, Sukabumi. This study used an experimental method with the treatment of semi-natural nests placed in exposed areas and shaded areas with different depths, namely 68 (control), 30, 50, 70 and 90 cm. Measurements and observations of environmental conditions were carried out during the incubation period. Observations of hatching of hatchlings began on the 55th day of incubation and the dismantling of the entire nest was carried out on the 68th day of incubation. The results showed that in exposed areas there was no significant difference given the level of treatment on the length of the incubation period, while in sheltered or protected areas there was at least one difference in the level of treatment that had a different effect on the length of the incubation period. The fastest incubation period in exposed areas was at a depth of 30 cm and in sheltered areas was at a depth of 90 cm. Key words: incubation period, the green turtle, the success of hatching.  
Penilaian Analisis Cluster dan Non-Metric Multidimensional Scalling terhadap Struktur Komunitas Mangrove di Desa Bagan Serdang, Sumatera Utara Surbakti, Livia Chasinta; Erlangga, Erlangga; Syahrial, Syahrial; Hadinata, Fitra Wira; Nufus, Hayatun; Anggraini, Rika; Agustini, Nella Tri; Leni, Yusyam; Rolin, Febrina; Utami, Risnita Tri
Buletin Oseanografi Marina Vol 14, No 2 (2025): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v14i2.69484

Abstract

Analisis multivariat seperti cluster dan nMDS sering digunakan untuk membantu interpretasi data lingkungan, sedangkan struktur komunitas vegetasi tumbuhan sangat berguna dalam mendeskripsikan ekologi suatu ekosistem, sehingga kajian penilaian analisis cluster dan nMDS terhadap struktur komunitas mangrove Desa Bagan Serdang dilakukan pada bulan September 2021. Hal ini bertujuan untuk mengetahui struktur komunitas mangrovenya berdasarkan analisis cluster dan nMDS. Vegetasi mangrove dikumpulkan dengan menarik transek kuadran yang tegak lurus garis pantai, kemudian data vegetasi mangrove dievaluasi menggunakan cluster dan nMDS. Keanekaragaman mangrove Desa Bagan Serdang teridentifikasi sebanyak 5 spesies dengan 4 famili, dimana penyebaran mangrovnya tergolong sesekali ditemukan (rata-rata frekuensi relatifnya 20,00%). Zona paling depan didominasi oleh Avicennia lanata, zona tengah didominasi oleh Rhizophora apiculata dan zona belakang didominansi oleh Rhizophora mucronata. Kerapatan mangrovenya berkisar antara 22,22 – 1222,22 ind/ha dan INP berkisar antara 9,64 – 231,78% dengan kerapatan vegetasi zona depan maupun tengah membentuk satu kelompok yang mengindikasikan kondisi kerapatannya hampir sama. Selanjutnya untuk INP, vegetasi zona depan dan tengah membentuk satu kelompok dengan spesies yang berperan penting adalah A. lanata serta R. apiculata, sedangkan di zona belakang, spesies yang berperan pentingnya adalah R. mucronata, E. agallocha dan X. granatum. Selain itu, basal area vegetasi mangrove Desa Bagan Serdang berkisar antara 278,22 – 654,35 m2/ha dengan basal area vegetasi zona depan maupun belakang memiliki tingkat kedewasaan yang hampir sama, sehingga membentuk satu kelompok. Kajian ini mengungkapkan adanya komposisi spesies mangrove campuran dengan perkembangan kedewasaan mangrovenya berbeda-beda. Data yang diinfokan dalam kajian ini akan menjadi baseline pengelolaan mangrove di Desa Bagan Serdang dan upaya konservasi di Provinsi Sumatera Utara maupun Indonesia.  Multivariate analyses such as clusters and nMDS are frequently used to facilitate in the interpretation of environmental data. In contrast, the community structure of plant vegetation is immensely useful in describing the ecology of an ecosystem. In September 2021, studies on the mangrove community structure of Bagan Serdang Village were conducted using cluster analysis and nMDS. It proposes to use cluster analysis and nMDS to determine the structure of the mangrove community. Mangrove vegetation was collected by pulling quadrant transects perpendicular to the shoreline, and the data was analyzed using clusters and nMDS. The diversity of mangroves in Bagan Serdang Village was identified as 5 species with 4 families, with mangrove distribution classified as occasional (average relative frequency of 20,00%). Avicennia lanata dominates the front zone, Rhizophora apiculata dominates the middle zone, and R. mucronata dominates the back zone. The mangrove density ranges from 22,22 to 1222,22 ind/ha, and the INP ranges from 9,64 to 231,78%, with the vegetation density in the front and middle zones forming one group that shows nearly the same density conditions. Furthermore, for the INP, the front and middle zone vegetation formed a group with species that played an important role which were A. lanata and R. apiculata, while species that played an important role in the rear zone were R. mucronata, E. agallocha, and X. granatum. Furthermore, the basal area of the mangrove vegetation in Bagan Serdang Village ranges from 278,22 to 654,35 m2/ha, with the basal area of the vegetation zones front and back having nearly the same maturity level, forming a single group. This study reveals the presence of a mixed mangrove species composition with different mangrove maturity developments. The data presented in this study will be the baseline for mangrove management in Bagan Serdang Village and conservation efforts in North Sumatra Province and Indonesia. 
Bioecological characteristics of mangrove snail in Langsa mangrove forest, Aceh, Indonesia: Diversity and community structure Mardiah, Nur Ainun; Erlangga, Erlangga; Syahrial, Syahrial; Hadinata, Fitra Wira; Ezraneti, Riri; Barat, Welmar Olfan Basten; Leni, Yusyam
Journal of Marine Studies Volume 1, Issue 1 (March, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/joms.v1i1.15792

Abstract

The most crucial aspect of managing an ecosystem or habitat is knowledge about accompanying biota, such as snails. The research on mangrove snails in the KPH Region III Aceh City of Langsa area was conducted in November 2021 with the goal of evaluating species diversity, density, ecological index, distribution, and their link to surrounding environmental conditions. Snail data was obtained via quadrat transects, with observation stations established using purposive sampling.The snail diversity was found to be five species from four families, with the highest density found in N. planospira (03.13 ind/m2). The diversity index was low (H' ‰¤ 2.0), dominance was moderate (0.5 < C ‰¤ 0.75), and uniformity tended to be balanced (0.5 < E ‰¤ 0.75). The distribution pattern is clustered (Iδ> 1), with C. cingulata being abundant (83.33%), and C. capucinus being frequently found (50.00%), N. planospiraonly found occasionally (36.11%), and L. scabra and T. telescopium are relatively uncommon (11.11% and 0.56%, respectively), with a link to environmental variables indicating that T. telescopium prefers fine mud substrates. Meanwhile, C. cingulata, C. capucinus, L. scabra, and N. planospiralive in habitats with fine mud substrates that are more solid than T. telescopiums habitats.
Co-Authors Adinda Aulia Putri Anang Kurnianto Dandi Saleky Dwinda Pangentasari Erlangga Erlangga Erlangga Erlangga Febrina Rolin Hadinata, Fitra Wira Hamzah, Hamzah Hayatun Nufus Hayatun Nufus Ita Karlina Khaldun, Muhammad Hafidz Ibnu Lobo, Reni Mardiah, Nur Ainun Natih, Nyoman Metta Nyanakumara Nella Tri Agustini, Nella Tri NEVIATY PUTRI ZAMANI Nuning Nurcahyani Pangentasari, Dwinda Reni Lobo Rika Anggraini Riri Ezraneti Riri Ezraneti Riris Roiska Risnita Tri Utami Rohmawati Bareta, Ainun RR. Ella Evrita Hestiandari Surbakti, Livia Chasinta Syahrial Syahrial SYAHRIAL SYAHRIAL Syahrial Syahrial Tri Wulandari Tri Wulandari Wandesi Mariati Welmar Olfan Barat, Welmar Olfan Widiastuti, Endang Linirin