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All Journal Aquacoastmarine Jurnal Pengelolaan Perikanan Tropis (Journal Of Tropical Fisheries Management) AQUACOASTMARINE: Journal of Aquatic & Fisheries Sciences
Pulungan, Ahyar
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science Other

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 1 
Productivity of Bentic Organisms (Order Diptera) in Cigambreng River, Tapos Village, Subdistrict Tenjoloya, Bogor Regency, West Java: Produktivitas Sekunder Organisme Bentik (Ordo Diptera) di Sungai Cigambreng, Desa Tapos, Kecamatan Tenjolaya, Kabupaten Bogor, Jawa Barat Kawirian, Rizky Regina; Nurcahyanto, Arif; Abdillah, Didit; Panggabean, Grin Tommy; Afif, Muhammad Irfan; Pulungan, Ahyar; Rahman, Chichilia Qaila Azzahra; Ishak, Mursalin; Krisanti, Majariana
Tropical Fisheries Management Journal Vol 4 No 1 (2020): Jurnal Pengelolaan Perikanan Tropis
Publisher : Departement of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jppt.v4i1.30904

Abstract

Insekta memiliki biodiversitas dengan penyebaran yang luas diseluruh dunia. Sampling dilakukan sekali dalam seminggu selama bulan Oktober 2019. Ditemukan total 717 spesimen Ordo Diptera yang melingkupi dua famili di Sungai Cigambreng. Tiap famili yang diperoleh melingkupi satu jenis yakni Antocha sp. (Famili Tipulidae.) dan Krenopelopia sp. (Chironomidae). Kehadiran jenis chironomid mengindikasikan adanya beban masukan berlebihan (Polutan) ke dalam perairan sungai Cigambreng. Secara umum, kelimpahan tertinggi diperoleh pada pengamatan ke empat yakni 284 ind/m2, sedangkan kelimpahan terendah diperoleh pada pengamatan ke dua yakni 60 ind/m2. Produktivitas sekunder melingkupi P/B Rasio sebesar 3.034/bulan dengan kecepatan produksi 14.2458 (g/m2/bln) dan biomassa (4.6954 g/m2).
Secondary Productivity of Crambidae Family in Cigambreng River, Tapos Village, Bogor: Produktivitas Sekunder Famili Crambidae di Sungai Cigambreng, Desa Tapos, Bogor Nurcahyanto, Arif; Pulungan, Ahyar; Abdillah, Didit; Afif, Muhammad Irfan; Panggabean, Grin Tommy; Kawirian, Rizky Regina; Rahman, Chichilia Qaila Azzahra; Krisanti, Majariana
Tropical Fisheries Management Journal Vol 4 No 1 (2020): Jurnal Pengelolaan Perikanan Tropis
Publisher : Departement of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jppt.v4i1.30905

Abstract

Secondary productivity is the formation of biomass of heterotrophic organisms in units of time including biomass that is lost in a certain time unit. The Crambidae family is an insect that has aquatic larvae and will become an air insect after the larval phase. This species has the potential to become a pest for agriculture. The study was conducted in October 2019 for one month. The Crambidae family species found consists of two species, Petrophila sp. and Elophila sp. The abundance of Crambidae during the study ranged from 100 ind/m2 to 422 ind/m2. Secondary productivity was analyzed by the size frequency method. The secondary productivity of the Crambidae family in Cigambreng river waters for one month was 47.7915 g/m2/month, the biomass formed was 14.9669 g/m2 and the P/B ratio was 3.1931.
Community Structure on Seagrass Fish Resources at Pandaratan Beach, North Sumatra : Struktur Komunitas Sumberdaya Ikan Padang Lamun di Pantai Pandaratan, Kabupaten Tapanuli Tengah, Provinsi Sumatera Utara Pulungan, Ahyar; Inrika, Huwilda; Fadhilah, Amanatul
Tropical Fisheries Management Journal Vol 4 No 1 (2020): Jurnal Pengelolaan Perikanan Tropis
Publisher : Departement of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jppt.v4i1.30909

Abstract

Seagrass beds are potential marine resources to be utilized, and ecologically, seagrass beds are some of the important functions of the coastal area. Many organisms are ecologically and biologically very dependent on the presence of seagrasses. The ecosystem is an important food source for the organism by many sea organisms that use it as a spawning place. This study aims to determine the diversity of fish in seagrass beds in Padaratan Beach, Sarudik Subdistrict, Central Tapanuli Regency. A gillnet is used to obtain fish samples at three observation stations during the period from mid-March to April 2018. Fish diversity can be agreed by looking at the composition of fish species and diversity index. The results of this study show the total number of fish obtained, 196 individuals, consisting of 12 families and 14 species. The highest number of fish catches is at Station II with a total catch of 70 individuals. The highest relative abundance of stations I, II, and III with values ​​of 22.96%, 20.01%, and 23.07% are found in fish species from the family Hemaramphidae with Zenarchopterus gilli species. The diversity index value (H') of all observation stations shows that species richness is in a moderate condition with values ​​of the station I (2,339), station II (2,439) and station III (2,367). While the uniformity value (e), shows the value of station I (0.866) station II (0.924) and station III (0.897) observations are in a stable condition (0.75 <e d ”1.00). Such conditions indicate that the distribution at each observation station is equitable.
Distribution and ecological status of mangroves in the Nias Islands-North Sumatra Province: Distribution and ecological status of mangroves in the Nias Islands Muhtadi, Ahmad; Harahap, Zulham Apandy; Pulungan, Ahyar; Siregar, Zufriwandi; Simaremare, Elisabet Rosevenny; Rahmawati, Ani; Nazara, Wilman; Khairunnisa
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 2 No. 2 (2023): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v2i2.12757

Abstract

The Nias Islands are a group of islands located on the west coast of Sumatra. Nias Island is the main and largest island on the West Coast of Sumatra. Information on the distribution and potential status of mangroves in the Nias Islands has been reported, but it is limited to a narrow area and not yet comprehensive throughout the Nias Islands. This study aims to determine the distribution and ecological status of mangroves in the Nias Islands. The research location was divided into two observation areas, namely 15 points on Nias Island and 23 points on the southern part of Nias. The research was carried out in June 2019 and June 2021. Mangrove sampling was carried out using the "spot check" method which refers to Bengen (2004). The results showed that the mangroves found in the Nias Islands consisted of 22 primary mangrove species and 9 secondary mangrove species. Rhizophora apiculata, Rhizophora mucronata, and Xylocarpus granatum are the most abundant mangrove species and are commonly found in the Nias Islands. The thickness of mangroves in the Nias Islands ranges from 15 – 880 m. The density of mangroves found reached 350-4,360 ind/ha. Mangrove cover reaches 0.08-31.62 m2/ha. The results of the analysis of the significant value of mangrove species show that Rhizophora mucronata and Rhizophora apiculata have a large influence and role in the mangrove vegetation community on Nias Island. Mangroves in the Nias Islands are categorized as damaged–good. The good category was found in South Nias, Belukar Bay, and Bengkuang Bay, while the damaged category was found in Lahewa Bay and Dalam Bay
Distribution and ecological status of mangroves in the Nias Islands-North Sumatra Province: Distribution and ecological status of mangroves in the Nias Islands Muhtadi, Ahmad; Harahap, Zulham Apandy; Pulungan, Ahyar; Siregar, Zufriwandi; Simaremare, Elisabet Rosevenny; Rahmawati, Ani; Nazara, Wilman; Khairunnisa
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 2 No. 2 (2023): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v2i2.12757

Abstract

The Nias Islands are a group of islands located on the west coast of Sumatra. Nias Island is the main and largest island on the West Coast of Sumatra. Information on the distribution and potential status of mangroves in the Nias Islands has been reported, but it is limited to a narrow area and not yet comprehensive throughout the Nias Islands. This study aims to determine the distribution and ecological status of mangroves in the Nias Islands. The research location was divided into two observation areas, namely 15 points on Nias Island and 23 points on the southern part of Nias. The research was carried out in June 2019 and June 2021. Mangrove sampling was carried out using the "spot check" method which refers to Bengen (2004). The results showed that the mangroves found in the Nias Islands consisted of 22 primary mangrove species and 9 secondary mangrove species. Rhizophora apiculata, Rhizophora mucronata, and Xylocarpus granatum are the most abundant mangrove species and are commonly found in the Nias Islands. The thickness of mangroves in the Nias Islands ranges from 15 – 880 m. The density of mangroves found reached 350-4,360 ind/ha. Mangrove cover reaches 0.08-31.62 m2/ha. The results of the analysis of the significant value of mangrove species show that Rhizophora mucronata and Rhizophora apiculata have a large influence and role in the mangrove vegetation community on Nias Island. Mangroves in the Nias Islands are categorized as damaged–good. The good category was found in South Nias, Belukar Bay, and Bengkuang Bay, while the damaged category was found in Lahewa Bay and Dalam Bay
Co-Authors Abdillah, Didit Afif, Muhammad Irfan Ahmad Muhtadi Ani Rahmawati Fadhilah, Amanatul Grin Tommy Panggabean Inrika, Huwilda Ishak, Mursalin Kawirian, Rizky Regina Khairunnisa Majariana Krisanti Nazara, Wilman Nurcahyanto, Arif Rahman, Chichilia Qaila Azzahra Simaremare, Elisabet Rosevenny Siregar, Zufriwandi Zulham Apandy Harahap