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All Journal Jurnal Sumberdaya Akuatik Indopasifik Cassowary
Tebaiy, Selvi
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Environmental Science

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Komposisi ukuran dan pola pertumbuhan ikan baronang lingkis Siganus canaliculatus di Perairan Kwatisore, Kabupaten Nabire Musyeri, Philipus; Manangkalangi, Emmanuel; Sembel, Luky; Toha, Abdul Hamid A.; Tebaiy, Selvi
Cassowary Vol 8 No 3 (2025): Juli
Publisher : Program Pascasarjana Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/casssowary.cs.v8.i3.474

Abstract

ABSTRACT: The rabbitfish, Siganus canaliculatus is one of the components in the coastal waters ecosystem (mangrove, seagrass, and coral reef) and also has important economic value for coastal communities, but information is still limited, especially in Papuan waters. This study aims to analyze the size composition and growth patterns of rabbitfish (Siganus canaliculatus) based on habitat differences in the waters of Kwatisore, Yaur District, Nabire Regency. Sampling was carried out at three locations representing various habitat types, such as mangrove, seagrass, and coral reef. The data collected included the total length (mm) and body weight (g) of the fish, which were then analyzed using the length-weight relationship model W = aLb. The results showed that the average body length and average body weight were greater in the coral reef habitat type, but relatively the same among the three research locations. The overall growth pattern (habitat type and location) with a tendency for body length to increase faster than body weight (negative allometric pattern) with a b value ranging from 2.771 to 2.888. The size and growth patterns obtained in this study indicate connectivity between locations and habitats, although both habitat types show different roles in the life cycle of this fish. This study provides important information for ecosystem-based management of the rabbitfish resource in the coastal area of Nabire.
Mikro-habitat ikan pelangi endemik Melanotaenia arfakensis dan implikasinya bagi konservasi insitu di Kebar, Papua Barat Daya Yemima Kaliele, Mariance; Bawole, Roni; Manangkalangi, Emmanuel; Tebaiy, Selvi; Toha, Abdul Hamid A.; Alfarani Bawole, Christover; Boli, Paulus; Mudjirahayu
Cassowary Vol 8 No 3 (2025): Juli
Publisher : Program Pascasarjana Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/casssowary.cs.v8.i3.485

Abstract

ABSTRACT: This study examines the microhabitat characteristics of the endemic rainbowfish Melanotaenia arfakensis in two major rivers of Tambrauw, Southwest Papua—Api River and Asiti River—focusing on the spatial dynamics of environmental parameters from upstream to downstream. Results indicate that water temperature, dissolved oxygen (DO), depth, current velocity, and river width show significant spatial trends and directly influence the survival of M. arfakensis. The upstream zones, characterized by lower temperatures (23–26°C), high DO levels (>7 mg/L), moderate current, and stable depth, are identified as optimal habitats and conservation priorities. In contrast, the midstream and downstream zones exhibit gradual habitat degradation, including temperature increases up to 29.1°C and decreased DO levels, approaching the physiological tolerance limits of the species. This decline in microhabitat quality correlates with riparian vegetation loss and anthropogenic pressures. Therefore, an effective in situ conservation strategy must be spatially explicit, adaptive, and participatory—emphasizing thermal refugia protection in the upstream zones, ecological restoration in the midstream, and integrated watershed management with community involvement in the downstream areas. Longitudinal connectivity and the integrity of the entire riverine ecosystem are essential for ensuring the long-term viability of this endemic species.
Valuasi Ekonomi Ekosistem Mangrove Di Kampung Air Mandidi Kabupaten Nabire Provinsi Papua Tengah Thomas, Juniati Tanduk; Tebaiy, Selvi; Kaber, Yuanike; Boli, Paulus; Manangkalangi, Emmanuel; Purba, Gandi Y.S.
Jurnal Sumberdaya Akuatik Indopasifik Vol 9 No 2 (2025): Mei
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2025.Vol.9.No.2.410

Abstract

Kajian tentang nilai ekonomi ekosistem mangrove sangat penting dilakukan untuk mengatasi permasalahan yang terjadi dalam pengelolaan ekosistem mangrove. Penilaian ekonomi mangrove dengan justifikasi dan pendekatan ilmiah yang tepat dapat digunakan untuk memperkirakan nilai submberdaya pada ekosistem mangrove. Penelitian ini bertujuan untuk menganalisis nilai ekonomi total ekosistem mangrove untuk berbagai pemanfaatan dan menganalisis faktor-faktor yang mempengaruhi kesediaan membayar masyarakat terhadap manfaat keberadaaan ekosistem mangrove di Kampung Air Mandidi Kabupaten Nabire. Penelitian dilakukan pada bulan Mei – Juli 2023. Metode penelitian yang digunakan adalah metode survei dan metode wawancara. Penentuan jumlah responden dilakukan dengan menggunakan metode purposive sampling, yaitu pengambilan sampel secara sengaja dari responden yang mengetahui dan memahami keadaan ekosistem mangrove di lokasi penelitian. Hasil penelitian menunjukkan kawasan ekosistem mangrove Kampung Air Mandidi seluas 94,57 ha mempunyai nilai manfaat ekonomi total sebesar Rp. 4.725.928.149/tahun dengan penyumbang nilai manfaat terbesar adalah dari nilai manfaat langsung. Nilai manfaat ekonomi total dapat dijadikan acuan atau dasar pembanding bagi masyarakat dan pemerintah dalam menentukan kebijakan pengelolaan dan pemanfaatan hutan mangrove yang ada. Secara parsial faktor yang berpengaruh secara signifikan terhadap kesediaan membayar masyarakat atau Willingness To Pay (WTP) terhadap keberadaan ekosistem mangrove adalah faktor pendapatan dengan nilai sig 0.00 < α 0.05. Sedangkan faktor usia, tingkat pendidikan jumlah tanggungan dan lama tinggal tidak berpengaruh secara signifikan.
Distribusi dan tingkah laku Hiu Paus (Rhincodon typus) di perairan Kwatisore Taman Nasional Teluk Cenderawasih Provinsi Papua Tengah Suruan, Sampari Saneraro; Manangkalangi, Emmanuel; Simatauw, Fanny F. C; Tebaiy, Selvi
Jurnal Sumberdaya Akuatik Indopasifik Vol 8 No 1 (2024): Februari
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2024.Vol.8.No.1.341

Abstract

Research on the whale shark (Rhincodon typus) is carried out in the Kwatisore waters, part of the Cenderawasih Bay National Park (CTNP), Papua, Indonesia. Field observations were conducted for 4 months, from September to December 2016. The objective of the study was to look at the distribution and behavior of whale sharks based on weather conditions, time and place of appearance. The collecting of whale shark data was done by direct observation method which was divided into 2 observation time that is direct observation by researchers between 06.00-17.59 WIT and indirect observation by lift-net fisherman between 18.00-05.59 WIT. The distribution of whale sharks will be analyzed using Geographic Information System (GIS) through digitization process and overlay based on coordinate point. The results of observation and data analysis showed that the frequency of whale shark emergence at 06.00-11.59 WIT is much higher than at 00.00-05.59 WIT that is 148: 18 times. The low frequency of occurrence of these fish at night because in every observation at night, it is difficult to find an individual whale shark that appears. Whale sharks are more visible when the weather is sunny, compared to overcast or rainy days. The results of behavioral observations show that 64% of whale sharks appear to be eating. The rest is playing and just passing by. This is because whale sharks are heavily dependent on the main food of plankton that often lies just below the surface of the waters and or on the surface of the waters.
Co-Authors Abdul Hamid A. Toha Alfarani Bawole, Christover Emmanuel Manangkalangi Kaber, Yuanike Mudjirahayu Mudjirahayu Musyeri, Philipus Paulus Boli Purba, Gandi Y.S. Roni Bawole Sembel, Luky Simatauw, Fanny F. C Suruan, Sampari Saneraro Thomas, Juniati Tanduk Yemima Kaliele, Mariance