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All Journal JURNAL ILMIAH PLATAX Journal of Applied Geospatial Information Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat TRITON : Jurnal Manajemen Sumberdaya Perairan Mattawang: Jurnal Pengabdian Masyarakat Bioscientist : Jurnal Ilmiah Biologi ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Oryza : Jurnal Pendidikan Biologi Jurnal Minfo Polgan (JMP) Jurnal Pengabdian Masyarakat Bhinneka Abdi Jurnal Publikasi Journal of Research and Publication Innovation Jurnal Perikanan
Handoco, Ewin
Universitas HKBP Nommensen Pematangsiantar
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Journal : JURNAL ILMIAH PLATAX

 1 
Macrozoobentos Diversity In The Mangrove Ecosystem In Bagan Asahan Village, North Sumatra Province Saragih, Maryanto; Sinaga, Mardame Pangihutan; Saragih, Ewin Handoco
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.55125

Abstract

Macrozoobenthos are organisms that live by crawling, sticking, burrowing, and burrowing both at the bottom of the water and on the surface of the water bottom. Macrozoobenthos that live in mangrove areas mostly live on hard sediments to mud. The existence of macrozoobenthos can be influenced by various environmental factors such as the physical, chemical, and biological properties of water. This research aims to determine diversity, uniformity, and the macrozoobenthos dominance of the mangrove ecosystem in Bagan Asahan Village. The method used in this research is to combine two methods, namely the square method and the line transect method. The quadratic method is used to see the macrozoobenthos found in the quadratic method in a biological system, while the line transect method is used as a point to determine the description of the macrozoobenthos. The results of the research show that there are 8 species of macrozoobenthos consisting of 3 classes with a total of 179 individuals. The diversity of macrozoobenthos in the mangrove ecosystem area in Bagan Asahan Village is classified as moderate with a diversity index H'' ranging from 1.54-2.01, the uniformity index is classified as stable ranging between E= 0.76-0.99 and the dominance index is low, ranging between C= 0.14-0.31. Keywords: Tanjung Balai, Macrozoobenthos, Mangrove, Diversity
Relationship length weight and condition factors of mackerel (Rastrelliger kanagurta) landed in Tanjung Tiram Port Batu Bara District North Sumatra Province Sihombing, Gokma David Lefi; Handoco, Ewin; Manik, Ria Retno Dewi Sartika
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.55126

Abstract

This research aims to determine growth patterns and condition factors. Apart from that, it is also to determine the level of gonad maturity and the gonad maturity index. The method used was a quantitative descriptive method by measuring length and weight and then dissection was carried out to observe the level of gonad maturity of male mackerel fish samples landed every week. The number of samples obtained during the August-September 2023 period was 200 individuals. The results of the research show that the equation for the relationship between length and weight is W = 0,00003L²͐⁸⁴⁵⁴⁷, which indicates a negative allometric growth pattern. The highest condition factor was obtained in the 190-191 mm length class with an average of 0,8757 and the lowest in the 185-186 length class with an average of 0,8416. The gonad maturity level of mackerel (Rastrelliger kanagurta) consists of TKG I to TKG IV. The IKG value obtained ranged from 5,616 to 6,375%. The increase in length of male mackerel shows a weak correlation with weight. Meanwhile, the weight of male mackerel had a significant influence on IKG. Keywords: Male mackerel, growth, condition factors, TKG, IKG. Abstrak Penelitian ini bertujuan untuk mengetahui pola pertumbuhan dan faktor kondisi. Selain itu juga untuk mengetahui tingkat kematangan gonad dan indeks kematangan gonad. Metode yang dilakukan adalah metode deskriptif kuantitatif dengan mengukur panjang dan berat kemudian dilakukan pembedahan untuk diamati tingkat kematangan gonad sampel ikan kembung lelaki yang didaratkan setiap minggunya. Adapun jumlah sampel yang diperoleh selama periode agustus-september 2023 adalah sebanyak 200 ekor. Hasil penelitian menunjukkan bahwa persamaan hubungan panjang berat W = 0,00003L²͐⁸⁴⁵⁴⁷ yang menunjukkan pola pertumbuhan allometrik negatif. Faktor kondisi tertinggi diperoleh pada kelas panjang 190-191 mm dengan rata-rata sebesar 0,8757 dan terendah pada kelas panjang 185-186 dengan rata-rata sebesar 0,8416. Tingkat kematangan gonad ikan kembung (Rastrelliger kanagurta) terdiri dari TKG I sampai TKG IV. Nilai IKG yang didapatkan berkisar 5,616-6,375%. Pertambahan ukuran panjang ikan kembung lelaki menunjukkan korelasi yang lemah terhadap berat. Sedangkan berat ikan kembung lelaki memberikan pengaruh yang nyata terhadap IKG. Kata Kunci: Ikan kembung lelaki, pertumbuhan, faktor kondisi, TKG, IKG.
Mangrove Community Structure In Mesjid Lama Village, Talawi District, Batu Bara District, North Sumatra Province Simamora, Ronita Haulian; Handoco, Ewin; , welmar Olfan Basten Barat
Jurnal Ilmiah Platax Vol. 12 No. 2 (2024): ISSUE JULY-DECEMBER 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i2.55442

Abstract

Mangroves are ecosystems in intertidal areas with strong interaction between marine, brackish, river, and terrestrial waters. Mangrove forests are one of the natural resources of coastal areas which have an important role in ecology, economy, and social aspects. The main benefit of mangroves is balancing the ecosystem and providing various life needs for humans and other living creatures. Besides being known to have economic potential as a provider of wood resources, fishing, crabs, and so on, mangrove forest resources also play a role in preventing sea waves and seawater intrusion towards land. The research location is in Mesjid Lama Village, Talawi District, Batu Bara Regency, North Sumatra Province. Mangrove observations used the quadrant transect method, where this research analyzed the types of mangroves, diversity, uniformity of mangroves, dominance, and INP of mangroves, and canopy cover. Three species of mangroves were found in Mesjid Lama Village, Talawi District, Batu Bara Regency, namely Avicenia Officinalis, Bruguiera cylindrica, and Rhizophora apiculata. Keywords: Mangrove Ecosystem, Diversity, Uniformity, Dominance, Importance Value Index, Mangrove Canopy Cover. Abstrak Mangrove merupakan ekosistem yang berada pada wilayah intertidal dimana pada wilayah tersebut terjadi interaksi yang kuat antara perairan laut, payau, sungai dan terestrial. Hutan mangrove merupakan salah satu sumberdaya alam wilayah pesisir yang memiliki peranan penting dari segi ekologi, ekonomi, dan social nya. Manfaat utama mangrove sebagai penyeimbang ekosistem dan penyedia berbagai kebutuhan hidup bagi manusia dan makhluk hidup lainnya. Sumberdaya hutan mangrove, selain dikenal memiliki potensi ekonomi sebagai penyedia sumberdaya kayu, penangkapan ikan, kepiting dan lain - lain, juga berperan untuk menahan gelombang laut dan intrusi air laut ke arah darat. Lokasi penelitian berada di Desa Mesjid Lama Kecamatan Talawi Kabupaten Batu bara Sumatera Utara, Pengamatan mangrove menggunakan metode transek kuadran, dimana penelitian ini menganalisis jenis – jenis mangrove, Keanekaragaman dan keseragaman mangrove, Dominansi dan INP mangrove serta Tutupan kanopi. Jenis mangrove di Desa Mesjid Lama Kecamatan Talawi Kabupaten Batu bara ditemukan 3 spesies yaitu Avicenia oficinalis, Bruguiera cylindrica, dan Rhizophora apiculata. Kata Kunci : Mangrove, Keanekaragaman dan Keseragaman, Dominansi, Indeks Nilai Penting, Tutupan Kanopi.
Co-Authors Ady Frenly Simanullang Apriani Sijabat Arleston, Jogi Basten, Welmar Olfan Frans Willis Siregar Gabryella Silaen Goldbert Harmuda Duva Sinaga Herna Febrianty Sianipar Herna Febrianty Sianipar Herna Febrianty Sianipar Jogi Arleston Jono Barita Sianipar Jono Barita Sianipar Leo Sandi Silaen Lista Sitio manik, ria retno Masni Veronika Situmorang Naibaho, Winfrontstein Pasaribu, David Diafragma Piter Sianturi Purba, Evan Gomgom Tua Purba, Jhon Sufriadi Rumondang, Anne Sahat Sitompul Samuel, Reaful Saragih, Maryanto Siagian, Gunaria Sianturi, Piter Jonson SIANTURI, TAMBOS AUGUST Siburian, Daniel T E Sihombing, Gokma David Lefi Silaen, Leo Sandi Silalahi, Mastiur Verawaty Simamora, Ronita Haulian Simanjuntak, Hendra Sinaga, Christa Voni Roulina Sinaga, Mardame Pangihutan Sirait, Debora Sitorus, Reaful Samuel Srinatalia Silaen Susanti, Mila Tambunan, Janwar Tambunan, Lois Welmar Olfan Barat, Welmar Olfan