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Journal : JURNAL ILMIAH PLATAX

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.
Study of Microzoobenthos diversity in the Barambang River, Siantar Marihat District, Pematangsiantar City, Noth Sumatera Utara Pakpahan, Dany Alberto; Barat, Welmar Olfan Basten; Saragih, Ewin Handoco
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.v12i2.59470

Abstract

This study aims to; identify the diversity, uniformity, and dominance of Macrozoobenthos in the Bah Biak River area, Pematangsiantar City, North Sumatra Province. This study used a combination of two transect methods, namely line transects and quadrat transects. Determination of the research location using Purposive sampling techniques. Data analysis using qualitative and quantitative analysis. The results of the study showed that there were 3 species of Macrozoobenthos consisting of 2 classes with a total of 67,35% individuals. The diversity of Macrozoobenthos in the Bah Barambang River, Pematangsiantar City, North Sumatra Province is classified as moderate with a diversity index of H' = 0,71 – 0,73, the evenness index is classified as low ranging from 0,51 – 0,53 and the dominance index is classified as low. Keywords:  Macrozoobenthos, River, Diversity Abstrak Penelitian ini bertujuan untuk; Untuk mengidentifikasi keanekaragaman, keseragaman dan dominansi Makrozoobenthos pada kawasan Sungai Barambang Kota Pematangsiantar Provinsi Sumatera Utara. Penelitian ini menggunakan kombinasi dua metode transek yaitu transek garis dan transek kuadrat. Penentuan lokasi penelitian menggunakan teknik purposive sampling. Analisis data menggunakan analisis kualitatif dan kuantitatif. Hasil penelitian diketahui bahwa terdapat 3 spesies Makrozoobenthos yang terdiri dari 2 kelas dengan jumlah keseluruhan 67,35% individu. Keanekaragaman Makrozoobenthos di Sungai Bah Barambang Kota Pematangsiantar Provinsi Sumatera Utara tergolong sedang dengan indeks keanekaragaman H' = 0,71 – 0,73, indeks keseragaman rendah berkisar antara 0,51 – 0,53 dan indeks dominansi rendah. Kata Kunci: Makrozoobentos, Sungai, Keanekaragaman.