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All Journal Juvenil: Jurnal Ilmiah Kelautan dan Perikanan Jurnal Ilmu Kehutanan
Sjamsu Alam Lawelle
Halu Oleo University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science

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Sebaran Ukuran, Hubungan Panjang-Berat, dan Faktor Kondisi Ikan Julung-Julung (Nomorhamphus sp.) di Air Terjun Nanga-nanga Kota Kendari, Sulawesi Tenggara Muhammad Nur Findra; Sjamsu Alam Lawelle; La Ode Muhammad Arsal; Daniel Frikli Mokodongan; Yustika Intan Permatahati; Risfandi Risfandi; Muhamad Ikbal; Sapri Sapri
Juvenil Vol 4, No 2: Mei 2023
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v4i2.19213

Abstract

ABSTRAKIkan julung-julung (Nomorhamphus sp.) merupakan salah satu jenis dari familia Zenarchopteridae. Ikan ini teramati di sekitar air terjun Nanga-nanga Kota Kendari dengan jumlah populasi yang kecil. Studi ini bertujuan untuk mengkaji sebaran ukuran, hubungan panjang-berat, dan faktor kondisinya di air terjun Nanga-nanga. Ikan ditangkap menggunakan jaring, dipisahkan berdasarkan jenis kelamin kemudian diukur panjangnya menggunakan mistar dengan ketelitian 0,1 cm dan ditimbang beratnya menggunakan timbangan digital dengan ketelitian 0,01 gram. Hasil penelitian menunjukkan sebaran ukuran tertinggi dari semua ikan yang dikumpulkan adalah pada kelas ukuran 4,2-6,5 cm, sedangkan pada ikan jantan ukuran tertinggi pada kelas ukuran 5,76-6,12 cm dan ikan betina tertinggi pada kelas ukuran dan 4,25-6,5 cm. Hubungan panjang-berat ikan julung-julung yang ditemukan menunjukkan bahwa ikan tersebut memiliki pola pertumbuhan yang bersifat allometrik positif (b3). Nilai faktor kondisi yang didapatkan 0,9945±0,0809 untuk ikan jantan, 1,0171±0,0862 untuk ikan betina, dan 0,9907±0,0807 untuk gabungan ikan jantan-betina. Baik ukuran maupun faktor kondisi, ikan betina memiliki kondisi yang lebih baik. Penelusuran lebih lanjut terhadap keberadaan ikan ini diperlukan untuk menentukan rencana pengelolaannya.Kata Kunci: air terjun Nanga-nanga, faktor kondisi, hubungan panjang-berat, Nomorhamphus sp., sebaran ukuranABSTRACTHalfbeak fish (Nomorhamphus sp.) is a type of the Zenarchopteridae family. It was observed around the Nanga-nanga waterfall, Kendari City, with a small population. This study was aimed to examine the size distribution, length-weight relationship, and condition factors at Nanga-nanga waterfall. The fish were caught using nets, separated by sex, then measured their length using ruler with an accuracy of 0.1 cm and weighed using a digital scale with an accuracy of 0.01 gram. The results showed that the highest size distribution of all fish collected was in the 4.2-6.5 cm size class, while the highest size for male and female were 5.76-6.12 and 4.25-6.5 cm size class, respectively. The relationship between fish  length  and weight was  found showed  that they have a positive  allometric  growth  pattern (b3). Condition factor values obtained for male, female, and both were 0.9945±0.0809, 1.0171±0.0862, and 0.9907±0.0807, respectively. Both size and condition factors, female have better conditions. Further investigation of this fish existence is needed to determine its management plan.Keywords: Nanga-nanga waterfall, condition factor, length-weight relationship, Nomorhamphus sp., size distribution
Daya Dukung Daerah Aliran Sungai berbasis Indokator Sosial-Ekonomi: Studi Kasus di DAS Tiworo, Pulau Muna La Gandri; La Ode Muhammad Erif; La Baco Sudia; Herlan Hidayat; Anita Indriasary; Al Rubayn Al Rubayn; Sjamsu Alam Lawelle; Uniadi Mangidi; Vivi Fitriani
Jurnal Ilmu Kehutanan Vol 20 No 1 (2026): March
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v20i1.27934

Abstract

Watershed degradation in small islands is increasingly influenced by socio-economic pressures such as population growth, poverty, and weak governance. Therefore, this research aimed to assess the socio-economic carrying capacity of Tiworo Watershed on Muna Island. This research was conducted from March to June 2022 across Muna Regency and West Muna Regency. The analysis used three parameters in accordance with Ministerial Regulation No. P.61/Menhut-II/2014, namely population pressure, population welfare, as well as the existence and enforcement of rules. The researchers collected primary data through purposive sampling from local stakeholders and households, while secondary data originated from Badan Pusat Statistik (BPS) and local agencies. The results showed that the population pressure was 1.39 ha/household, indicating a moderate level. The population welfare level was categorized as poor (29.5% of households), with increasing dependence on forest resources and the potential for land conversion. Rule existence and enforcement were categorized as good because local communities still maintain local norms and practices, including spring protection and agroforestry. The overall socio-economic carrying capacity score was 105, placing the watershed in the moderate category. Strengthening welfare, land-use planning, and local wisdom-based management is necessary to support sustainable watershed governance.
Co-Authors Al Rubayn Al Rubayn Anita Indriasary Daniel Frikli Mokodongan Findra, Muhammad Nur Gandri, La Herlan Hidayat La Baco S La Ode Muhammad Arsal La Ode Muhammad Erif Muhamad Ikbal Risfandi Sapri Sapri Uniadi Mangidi Vivi Fitriani Yustika Intan Permatahati