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All Journal Aquacoastmarine Jurnal Kemaritiman: Indonesian Journal of Maritime AQUACOASTMARINE: Journal of Aquatic & Fisheries Sciences
Ahmad Muhtadi Rangkuti
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Other

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The Ecological Condition of Mangrove in Bali Beach, Mesjid Lama Village, Talawi Sub District, Batu Bara District, North Sumatera Province. Ofi Sabrina Sitompul; Yunasfi Djayus; Ahmad Muhtadi Rangkuti
AQUACOASTMARINE Vol 2, No 3 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 3, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Mangrove is the living plant community between the sea and the land that was influenced by the tides. Bali beach in Mesjid Lama village, Batu Bara Regency of North Sumatera Province has an area of mangrove forest about 637,22 ha. Bali beach still has a natural mangrove ecosystem. But, the coastal has long been used by the local community as a source of livelihood especially mangrove forest logging. This research was aimed to know the ecological condition of mangrove forest and condition of the mangrove waters. This research is done in March 2014 to Mei 2014. This research is done with a purposive sampling method by taking and observing of biotic components which was mangrove vegetation and the measurement of water quality parameters. There are 10 kinds of mangrove which found in the research location, namely Aegiceras corniculatum, Avicennia lanata, A. marina, A. officinalis, Bruguiera cylindrica, B. sexangula, Ceriops tagal, Excoecaria agallocha, Rhizophora mucronata and R. stylosa. Kinds of mangrove substrate at this research is clay, loam and silty loam. The biggest diversity index is in the station II.Keywords : mangrove, the ecological condition, water quality, Batu Bara District.
IDENTIFIKASI DAN ANALISIS HUBUNGAN PANJANG BOBOT IKAN GELODOK (FAMILI : GOBIIDAE) DI PANTAI BALI DESA MESJID LAMA KECAMATAN TALAWI KABUPATEN BATU BARA PROVINSI SUMATERA UTARA Sabilah Fi Ramadhani; Yunasfi Djayus; Ahmad Muhtadi Rangkuti
AQUACOASTMARINE Vol 2, No 3 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 3, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Bali beach is one of the beaches in the Batu Bara, precisely located in the Mesjid Lama Village, Sub-district of Talawi, District of Batu Bara, North Sumatra Province. There is a coastal mangrove forests in this area. Mangrove is a good habitat for mudskipper. The research aims to determine identification and lenght weight analysis of mudskipper. The research was conducted from March until June 2014. The Method of the research is purposive sampling. For fishing example, the stations or area was used consisted of three transects of which are with beaches, mangroves, and rivers. There are four types of fish can be found in those areas, which are Periophthalmus chrysospilos, Periophthalmus gracilis, Boleophthalmus boddarti and Periophthalmonodon schlosseri. If we sorted that length weight relationship were 3.26 cm, 0.91 cm, 3.06 cm, and 3.01 cm.Keywords: Bali Beach, identification, length weight relationship, Mudskipper.
KAJIAN KESESUAIAN EKOWISATA MANGROVE DI PANTAI BALI DESA MESJID LAMA KECAMATAN TALAWI KABUPATEN BATU BARA PROVINSI SUMATERA UTARA Pesta Saulina Sitohang; Yunasfi Djayus; Ahmad Muhtadi Rangkuti
AQUACOASTMARINE Vol 2, No 3 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 3, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Bali Beach is a located in Batu Bara with an area of approximately 637.22 ha which is a coastal area about 30.6% of the total area.This study aims to determine the potential of mangrove ecosystem for ecotourism, calculate the suitability and mangrove ecotourism carrying capacity. This research was conducted in March to April 2014. Research method used was Purposive Sampling for potential mangrove. Using three stations consisted of the first station (located at the eastern area of Bali Beach), second station (located at the middle area of Bali Beach), and the third station (located at the west coast of Bali Beach). The mangrove species found are: Excoecaria agallocha, Avicennia marina, A.lanata, Bruguiera sexangula, B.cylindrica, Rhizophora mucronata, Aegiceras corniculatum, A.Officinalis, R. stylosa, Ceriops tagal with a population density values exceeding 1000 trees / ha. Suitability index tour of mangrove is 69,23%at the first station is with under unconditional category, and at the second station and third station are 94,87% with suitability category. The carrying capacity (DDK) at first station is 12 persons/day, 37 persons/day at second station and 16 persons/day at third station.Keywords : Ecotourism, Mangrove, Bali Beach
STRUKTUR KOMUNITAS LAMUN PADA PULAU SARANGBAUNG, KABUPATEN NIAS UTARA Khairunnisa Khairunnisa; Ahmad Muhtadi Rangkuti; Zufriwandi Siregar; Elisabet Rosevenny Simaremare; Muhammad Riza Kurnia Lubis
Jurnal Kemaritiman: Indonesian Journal of Maritime Vol 4, No 1 (2023): Juni 2023
Publisher : Universitas Pendidikan Indonesia (UPI)

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Abstract

Seagrass is a coastal vegetation that has various ecological, social, and economic roles for marine biota and humans. However, until now there is little current information regarding the status and inventory Sarangbaung Island which is administratively located in North Nias Regency and geographically located in the Indian Ocean. This study aims to examine the distribution and status of seagrasses in the waters of Sarangbaung Island, North Nias Regency. The research was conducted in December 2022. Observations of seagrass were carried out using the line and square transect method of 0.5 m x 0.5 m which refers to the seagrasswatch method. In total, 3 species were found during this study namely Syringodium isoetifolium, Cymodocea rotundata, and Cymodocea serrulate. Seagrass density on Sarangbaung Island ranges from 53-728 ind/m2. Meanwhile, seagrass coverage is 82%, which indicated that seagrass was in a good category with rich/healthy conditions.
Keanekaragaman Fitoplankton dan Hubungannya Dengan Kualitas Air di Sungai Aek Pohon Kabupaten Mandailing Natal Provinsi Sumatera Utara Leidonald, Rusdi; Yusni, Eri; Siregar, Rizki Febriansyah; Rangkuti, Ahmad Muhtadi; Zulkifli, Ahmad
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 1 No. 2 (2022): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v1i2.8753

Abstract

Fitoplankton merupakan organisme yang sangat dipengaruhi oleh perubahan kualitas air. Fitoplankton dapat dijadikan sebagai indikator untuk mengevaluasi kualitas dan tingkat kesuburan suatu perairan. Tujuan penelitian ini adalah untuk mengetahui keanekaragaman fitolankton dan hubungannya dengan kualitas air di Sungai Aek Pohon Kabupaten Mandailing Natal Provinsi Sumatera Utara. Penelitian dilaksanakan bulan Agustus-Oktober 2021 menggunaan metode purposive sampling dengan melihat pemanfaatan dan perbedaan kondisi lingkungan disekitar Sungai Aek Pohon pada 3 stasiun pengamatan. Kualitas Sungai Aek Pohon Kabupaten Mandailing Natal berdasarkan metode storet memenuhi baku mutu air sungai pada stasiun I dan III dengan nilai storet yaitu 0. Stasiun II dengan nilai storet yaitu -2 dikategorikan tercemar ringan. Berdasarkan indeks saprobik fitoplankton Sungai Aek Pohon dikelompokkan kedalam βMeso/Oligosaprobik dengan nilai saprobitas 1,1 dan termasuk kedalam perairan dengan kondisi tercemar ringan. Nilai keanekaragaman fitoplankton menunjukkan bahwa seluruh stasiun termasuk kedalam keanekaragaman sedang nilai keanekaragaman pada stasiun I yaitu 2,538, stasiun II yaitu 2,886 dan stasiun III yaitu 2,878. Hasil principal component analysis menunjukkan suhu, pH, DO, fosfat dan nitrat berkorelasi positif terhadap keanekaragaman fitoplankton dengan masing-masing nilai korelasi 0,417; 0,411; 0,081; 0,346 dan 0,433. Hubungan kecerahan dan kecepatan arus berkorelasi negatif (tidak searah) terhadap keanekaragaman fitoplankton dengan masing-masing nilai korelasi-0,052 dan -0,297.
Keanekaragaman Fitoplankton dan Hubungannya Dengan Kualitas Air di Sungai Aek Pohon Kabupaten Mandailing Natal Provinsi Sumatera Utara Leidonald, Rusdi; Yusni, Eri; Siregar, Rizki Febriansyah; Rangkuti, Ahmad Muhtadi; Zulkifli, Ahmad
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 1 No. 2 (2022): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v1i2.8753

Abstract

Fitoplankton merupakan organisme yang sangat dipengaruhi oleh perubahan kualitas air. Fitoplankton dapat dijadikan sebagai indikator untuk mengevaluasi kualitas dan tingkat kesuburan suatu perairan. Tujuan penelitian ini adalah untuk mengetahui keanekaragaman fitolankton dan hubungannya dengan kualitas air di Sungai Aek Pohon Kabupaten Mandailing Natal Provinsi Sumatera Utara. Penelitian dilaksanakan bulan Agustus-Oktober 2021 menggunaan metode purposive sampling dengan melihat pemanfaatan dan perbedaan kondisi lingkungan disekitar Sungai Aek Pohon pada 3 stasiun pengamatan. Kualitas Sungai Aek Pohon Kabupaten Mandailing Natal berdasarkan metode storet memenuhi baku mutu air sungai pada stasiun I dan III dengan nilai storet yaitu 0. Stasiun II dengan nilai storet yaitu -2 dikategorikan tercemar ringan. Berdasarkan indeks saprobik fitoplankton Sungai Aek Pohon dikelompokkan kedalam βMeso/Oligosaprobik dengan nilai saprobitas 1,1 dan termasuk kedalam perairan dengan kondisi tercemar ringan. Nilai keanekaragaman fitoplankton menunjukkan bahwa seluruh stasiun termasuk kedalam keanekaragaman sedang nilai keanekaragaman pada stasiun I yaitu 2,538, stasiun II yaitu 2,886 dan stasiun III yaitu 2,878. Hasil principal component analysis menunjukkan suhu, pH, DO, fosfat dan nitrat berkorelasi positif terhadap keanekaragaman fitoplankton dengan masing-masing nilai korelasi 0,417; 0,411; 0,081; 0,346 dan 0,433. Hubungan kecerahan dan kecepatan arus berkorelasi negatif (tidak searah) terhadap keanekaragaman fitoplankton dengan masing-masing nilai korelasi-0,052 dan -0,297.
Co-Authors Elisabet Rosevenny Simaremare Eri Yusni Khairunnisa Khairunnisa Muhammad Riza Kurnia Lubis Ofi Sabrina Sitompul Pesta Saulina Sitohang Rusdi Leidonald Sabilah Fi Ramadhani Siregar, Rizki Febriansyah Yunasfi Djayus Zufriwandi Siregar Zulkifli, Ahmad