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All Journal HAYATI Journal of Biosciences Journal of Marine Research Techno-Fish Jurnal Laot Ilmu Kelautan
Maharani
Program Studi Ilmu Kelautan, Universitas Sembilanbelas November Kolaka
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences

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Allometric Model, Aboveground Biomass and Carbon Sequestration of Natural Regeneration of Avicennia lanata (Ridley). at in-active Pond of Muna Regency, Southeast Sulawesi Fajar Hasidu; Arif Prasetya; Maharani Maharani; Muhammad Syaiful; Kangkuso Analuddin
HAYATI Journal of Biosciences Vol. 29 No. 3 (2022): May 2022
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.29.3.399-408

Abstract

This study aimed to establish an allometric model for estimation of aboveground biomass, and carbon sequestration in A. lanata mangrove forest growing in Muna Regency, Southeast Sulawesi. Research methods were done by transect and 5 quadrats with size of 100 m2 each. A total of thirteen individual trees with different sizes were harvested. While DBH and D30 were measured. The samples were separated into stems, branches, and leaves and then weighted. The sample from each fresh organs were taken and brought to the Laboratory and then oven dried at 80°C for 7 days. The allometric equations were established by using independent variables (DBH and D30), and dependent variables (Ws, Wb, Wl). The partial and overall aboveground biomasses were calculated from allometric model, while carbon stock and CO2 sequestration were estimated. The results showed that the independent variable of DBH was more applicable for estimation of Ws, Wb, Wl, and total biomasses (Mg ha-1) of A. lanata forest, which were estimated as 28.28±3.48, 6.40±0.79, 5.00±0.66, and 40.08±4.97 respectively. The carbon stock in stems (13.24±1.63 Mg ha-1) was higher than in branches (3.01±0.37 Mg C ha-1) as well as in leaves (2.35±0.31 Mg C ha-1). The total of carbon stock were estimated at about 18.83±2.33 Mg C ha-1. Meanwhile, the total of CO2 absorption by A. lanata mangrove was 43.95±5.45 Mg CO2 ha-1. Therefore a regenerated A. lanata mangrove in this in-active pond area had potentiality on carbon stock and sequestrations, although these vegetation condition was still in the growth stage.
KOMPOSISI JENIS JUVENIL IKAN DI PERAIRAN EKOSISTEM MANGROVE PULAU PARANG KEPULAUAN KARIMUNJAWA KABUPATEN JEPARA Maharani Maharani; Mujiyanto Mujiyanto; Riska Riska; La Ode Abdul Fajar Hasidu
Jurnal Laot Ilmu Kelautan Vol 2, No 2 (2020): Jurnal Laot Ilmu Kelautan
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jlaot.v2i2.3068

Abstract

Ekosistem mangrove merupakan sumberdaya alam hayati yang memiliki manfaat aspek ekologi yaitu sebagai tempat hidup beragam jenis biota perairan. Salah satu jenis biota ekonomis penting yang hidup di daerah mangrove yaitu komunitas ikan. Penelitian dilaksanakan pada bulan Desember 2012 (musim barat). Penelitian ini bertujuan untuk mengkaji komposisi jenis juvenil ikan di perairan ekosistem mangrove Pulau Parang Kepulauan Karimunjawa. Juvenil ikan dikoleksi dengan jaring angkat (lift net), jaring lempar ukuran mata jaring 2 inchi, alat pancing serta serok (seser) ikan. Komposisi jenis juvenil ikan di perairan ekosistem mangrove Pulau Parang yang dikoleksi pada musim barat yaitu berjumlah 10 jenis dari 9 genus dan 9 famili. Lutjanidae merupakan famili ikan yang memiliki nilai ekonomis penting. Nilai keanekaragaman jenis pada ketiga lokasi menunjukkan sebaran yang relatif merata, dimana penyebaran individu tiap jenis relatif seragam dan tidak ada spesies yang mendominasi. Indeks keanekaragaman (H) jenis juvenil ikan berkisar antara 1,252 – 1,328; indeks keseragaman (E) berkisar antara 0,668 – 0,825dan indeks dominansi (C)berkisar antara 0,292 – 0,355.
KOPERASI SIMPAN PINJAM BAGI NELAYAN TANGKAP (STUDI KASUS DI DESA MOOTAWA KABUPATEN BONE BOLANGO PROVINSI GORONTALO) Maharani; Ramlah; Lebrina Ivantry Boikh; Ady Jufri; Asni; Arif Prasetya; Anti Landu; Hasan Eldin; Ilham Antariksa; La Ode Abdul Fajar Hasidu; Riska
Techno-Fish Vol 5 No 2 (2021): TECHNO-FISH
Publisher : TECHNO-FISH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25139/tf.v5i2.4408

Abstract

Tujuan penelitian ini adalah mendeskripsikan peran Koperasi Simpan Pinjam WargaMakmur bagi nelayan di Desa Mootawa Kecamatan Bone Raya Kabupaten Bone BolangoProvinsi Gorontalo. Metode penelitian yang digunakan adalah metode deskriptif kualitatif.Pemilihan sampel/ responden dilakukan dengan pengambilan para pengurus koperasi secarasengaja (judgement sampling) dan anggota Koperasi Simpan Pinjam Warga Makmur yangberprofesi sebagai nelayan. Pengumpulan data dengan pengamatan/observasi, wawancaralangsung kepada nelayan responden dan dokumentasi. Teknik analisis data yang digunakanadalah teknik analisis data interaktif. Hasil penelitian menunjukkan bahwa peran KoperasiSimpan Pinjam bagi nelayan di Desa Mootawa Kecamatan Bone Raya Kabupaten BoneBolango Provinsi Gorontalo, yaitu: membantu keperluan/ kebutuhan hidup nelayan melaluipinjaman dengan syarat-syarat yang mudah dan angsuran yang cukup ringan bagi nelayan.Sejauh ini, koperasi belum pernah menyelenggarakan kegiatan pendidikan/ pelatihan khususuntuk mendidik dan menambah pengetahuan anggota tentang perkoperasian, permodalan dan lain-lain. Koperasi juga belum pernah terlibat langsung dalam kegiatan-kegiatan sosial dimasyarakat nelayan sekitar.
Struktur Komunitas, Biomassa Permukaan dan Status Simpanan Karbon Biru di Kawasan Mangrove Terdegradasi Kabupaten Kolaka La Ode Abdul Fajar Hasidu; Arif Prasetya; Maharani Maharani; Nur Anisa; Risnita Tri Utami; Laode Muhamad Hazairin Nadia
Journal of Marine Research Vol 11, No 4 (2022): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v11i4.35058

Abstract

: Ekosistem mangrove memiliki potensi yang cukup besar dalam menyerap emisi karbon dari atmosfer. Karbon tersebut mampu tersimpan di dalam biomassa maupun sedimen, dan dikenal sebagai blue carbon. Meskipun demikian, degradasi mangrove dapat mengganggu potensi tersebut. Tujuan dari penelitian ini adalah untuk mengetahui struktur komunitas, biomassa permukaan (AGB), simpanan karbon biru vegetasi mangrove, serta kemampuan serapan karbon ekosistem mangrove yang telah mengalami degradasi di sepanjang pesisir Kabupaten Kolaka. Ekosistem mangrove di kawasan tersebut merupakan mangrove tepian (Fringe Mangrove), dan ketebalannya kurang dari 100 meter. Penelitian ini menggunakan metode transek kuadrat sejajar garis pantai. Sebanyak 5 plot berukuran 100m2 diletakkan disepanjang transek. Data yang dikoleksi di setiap plot berupa diameter batang (dbh), jenis, dan jumlah jenis. AGB diestimasi menggunakan persamaan allometrik yang telah dikembangkan oleh beberapa peneliti terdahulu. Sementara itu stok karbon diestimasi menggunakan data AGB dan konstanta karbon dari bahan organik. Hasil penelitian menunjukkan bahwa ekosistem mangrove di pesisir Kolaka tersusun atas 8 spesies mangrove. Kerapatan mangrove tertinggi berturut-turut stasiun 3 (2180 ind/ha; kategori baik), stasiun 4 (2160 ind/ha; kategori baik), stasiun 1 (1520 ind/ha; kategori baik), dan stasiun 2 (1160 ind/ha; kategori sedang). Total AGB untuk seluruh stasiun sebesar 1242,29 ton/ha dengan AGB tertinggi pada stasiun 4 (455,58 ton/ha). Total stok karbon vegetasi mangrove untuk seluruh stasiun yaitu sebesar 583,85 ton/ha, dengan stok karbon tertinggi terdapat pada stasiun 4 (214,11 ton/ha). Sementara itu, total serapan karbon untuk seluruh stasiun sebesar 1362,46 ton/ha, dengan serapan karbon tertinggi terdapat pada stasiun 4 (499,65 ton/ha). Nilai AGB berbanding lurus dengan nilai stok karbon dan serapan karbon.  Mangrove ecosystem has a great potential to absorb carbon emission from atmosphere. Those carbon could be stored into the biomass as well as into the sediment, and it’s well known as blue carbon. Nevertheless, mangrove degradation could disturb those mangrove potential. The aims of this study were to knows the community structure, aboveground biomass (AGB), blue carbon stocks of mangrove vegetation, as well as the ability of carbon absorbtion of degraded mangrove ecosystem along Kolaka Coastal Line. The mangrove ecosystem at those areas was a fringe mangrove, and the mangrove thickness less than 100 meters. This study using quadratic transect method prependicular to the coastal line. 5 plots sized 100m2 were placed along transect line. The data were collected in each plot were stem diameter (dbh), species and total of species. The AGB were estimated using allometric equation that has been developed by previous researcher. Meanwhile, the carbon stock was estimated by using the AGB data and carbon constant value from organic matter. The results of this study showed that mangrove ecosystem of Kolaka coastal line constructed by 8 mangrove species. The highest mangrove density were station 3 (2180 ind/ha; good category), station 4 (2160 ind/ha; good category), station 1 (1520 ind/ha; good category), and station 2 (1160 ind/ha; medium category) respectively. The AGB total for all stations was about 1242,29 ton/ha, with the highest AGB was in the station 4 (455,58 ton/ha). The total of carbon stock of mangrove vegetation for all stations was about 583,85 ton/ha, with the highest carbon stock was in the station 4 (214,11 ton/ha). Meanwhile, the total of carbon absorbtion for all stations was about 1362,46 ton/ha, with the highest carbon absorbtion was in the station 4 (499,65 ton/ha). The AGB values has directly proportional to the carbon stock and carbon absorbtion.
PERAN KELOMPOK MASYARAKAT ”PANTAI NUNSUI” DALAM KEBERLANJUTAN PENGELOLAAN WILAYAH PESISIR TAMAN WISATA ALAM LAUT (TWAL) TELUK KUPANG Lebrina Ivantry Boikh; Jhon Septin Mourisdo Siregar; Maharani
Techno-Fish Vol 7 No 1 (2023): TECHNO-FISH
Publisher : TECHNO-FISH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25139/tf.v7i1.6229

Abstract

In managing the TWAL of Kupang Bay, synergy and participation of the surrounding community are needed to maintain and preserve the existing coastal and marine resources. The presence of the "Nunsui Beach" Community Group is expected to be able to contribute to efforts to sustain coastal and marine resources in TWAL Teluk Kupang. This study aims to determine the role of the community, especially the "Nunsui Beach" community group in the sustainable management of the TWAL Teluk Kupang coastal area. The research was conducted in the Oesapa Village, Kelapa Lima District, Kupang City with the main focus being the "Nunsui Beach" Community Group. Source of data is done by using a questionnaire method with a questionnaire instrument. This research use desciptive qualitative approach. The TWAL Teluk Kupang Community Group “Nunsui Beach” is a group that was legalized through Decree of the Oesapa Village Head No. 011/SKEP/KOSP/2020 concerning the establishment of the “Nunsui Beach” group, Oesapa Village, Kelapa Lima District, Kupang City. This group is engaged in capture fisheries activities using fishing rods, trawls, fixed nets and floating nets and is tasked with efforts to improve the welfare of the group, develop the creative economy and help and support conservation efforts carried out by the KSDA Center in the TWAL area of Kupang Bay. The role of the "Nunsui Beach" Community Group in implementing sustainable management, namely carrying out independent and joint patrols with the Government (NTT BKSDA), collecting data on catches, participating in developing the creative economy through selling processed catches and local culinary snacks and conveying and implementing applicable fishing regulations and delivery of useful information to improve the human resources of the Oesapa Village.
Co-Authors Ady Jufri Anti Landu Arif Prasetya Asni Asni Hasan Eldin Hasidu, La Ode Abdul Fajar I Gusti Bagus Wiksuana Ilham Antariksa Tasabaramo Jhon Septin Mourisdo Siregar Kangkuso Analuddin, Kangkuso Laode Muhamad Hazairin Nadia Lebrina Ivantry Boikh Lebrina Ivantry Boikh Muhammad Syaiful Mujiyanto Mujiyanto Nur Anisa Ramlah Riska Risnita Tri Utami