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All Journal Jurnal Perencanaan Wilayah dan Kota Jurnal Inovasi Pendidikan Kimia Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Majalah Lontar JFMR (Journal of Fisheries and Marine Research) Pendas : Jurnah Ilmiah Pendidikan Dasar Jurnal Kelautan Nasional JURNAL PERIKANAN TROPIS Asian Journal of Aquatic Sciences Jurnal Laot Ilmu Kelautan Jurnal Abdi Insani Journal of Coastal and Ocean Sciences Journal of Rural and Urban Community Empowerment Jurnal Ilmiah Profesi Guru (JIPG) PEDADIDAKTIKA: Jurnal Ilmiah Pendidikan Guru Sekolah Dasar Journal of Aceh Aquatic Sciences
Ika Kusumawati
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Identifikasi Jenis dan Struktur Komunitas Makroalga di Perairan Pantai Desa Lamamek, Pulau Simeulue: Identification of Macroalgae Community Types and Structure in the Coastal Waters of Lamamek Village, Simeulue Island Razali; Wahyuni, Sri; Nufus, Hayatun; Kusumawati, Ika; Mursawal, Asri
JFMR-Journal of Fisheries and Marine Research Vol. 10 No. 2 (2026): JFMR on July
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2026.010.02.8

Abstract

Makroalga merupakan sumber daya hayati laut yang berperan penting dalam menjaga keseimbangan ekosistem pesisir serta memiliki potensi ekonomi yang tinggi. Penelitian ini bertujuan mengidentifikasi jenis makroalga dan menganalisis struktur komunitas makroalga di perairan Pantai Desa Lamamek, Pulau Simeulue. Penelitian dilaksanakan pada Desember 2024 menggunakan metode eksploratif dengan teknik purposive sampling pada tiga stasiun pengamatan yang memiliki karakteristik substrat berbeda. Pengambilan sampel dilakukan menggunakan metode transek garis (line transect) dengan ukuran plot 1x1 m. Analisis struktur komunitas dilakukan menggunakan indeks keanekaragaman (H'), indeks keseragaman (E), dan indeks dominansi (D), serta didukung pengukuran parameter kualitas perairan meliputi suhu, salinitas, pH, dan dissolved oxygen (DO). Hasil penelitian mengidentifikasi delapan spesies makroalga yang terdiri atas empat spesies Chlorophyta (Caulerpa racemosa, Caulerpa taxifolia, Halimeda opuntia, dan Chaetomorpha crassa) serta empat spesies Phaeophyta (Sargassum polycystum, Sargassum crassifolium, Turbinaria ornata, dan Padina australis), sedangkan Rhodophyta tidak ditemukan. Padina australis merupakan spesies dengan jumlah individu tertinggi. Nilai indeks keanekaragaman berkisar antara 1,38–1,89 (kategori sedang), indeks keseragaman 0,97–0,99 (kategori tinggi), dan indeks dominansi 0,15–0,25 (kategori rendah). Kondisi tersebut menunjukkan komunitas makroalga yang relatif stabil dengan penyebaran individu yang merata tanpa adanya spesies yang mendominasi. Parameter kualitas perairan masih berada pada kisaran yang sesuai untuk mendukung pertumbuhan makroalga yakni suhu 30,2-31,70C, DO 6,07-6,40 mg/L, salinitas 29-31‰ dan pH 8,10-8,22. Hasil penelitian ini menyediakan data dasar mengenai keanekaragaman dan struktur komunitas makroalga yang dapat dimanfaatkan sebagai acuan dalam pengelolaan serta konservasi ekosistem pesisir di Pulau Simeulue. Macroalgae are important marine biological resources that contribute to the stability of coastal ecosystems and provide significant economic value. This study aimed to identify macroalgal species and analyze their community structure in the coastal waters of Lamamek Village, West Simeulue District, Simeulue Regency. The study was conducted in December 2024 using an exploratory approach with purposive sampling at three stations representing different substrate characteristics. Sampling was carried out using the line transect method with a plot size of 1 x 1 m. Community structure was evaluated using the Shannon-Wiener diversity index (H'), evenness index (E), and dominance index (D), supported by measurements of temperature, salinity, pH, and dissolved oxygen (DO). Eight macroalgal species were identified, comprising four Chlorophyta (Caulerpa racemosa, Caulerpa taxifolia, Halimeda opuntia, and Chaetomorpha crassa) and four Phaeophyta (Sargassum polycystum, Sargassum crassifolium, Turbinaria ornata, and Padina australis), while no Rhodophyta species were recorded. Padina australis showed the highest abundance. The diversity index ranged from 1.38 to 1.89 (moderate), evenness from 0.97 to 0.99 (high), and dominance from 0.15 to 0.25 (low), indicating a relatively stable community with evenly distributed individuals and no dominant species. Water quality parameters were still within the appropriate range to support macroalgae growth, namely temperature 30.2-31.7°C, DO 6.07-6.40 mg/L, salinity 29-31‰, and pH 8.10-8.22. These findings provide baseline information for the management and conservation of coastal macroalgal resources in Simeulue Island.
Identifikasi Jenis Mikroplastik Di Perairan Laut Kabupaten Aceh Barat Provinsi Aceh Ika Kusumawati; Mai Suriani; Jihannuma Adibiah Nurdini; Saiful Amin; Deri Anggraini
Jurnal Kelautan Vol 19, No 1: April 2026
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v19i1.33937

Abstract

ABSTRAKJenis mikroplastik di perairan laut menjadi penting untuk diperhatikan karena menggambarkan karakteristik dan sumber pencemar yang terdapat di perairan tersebut. Penelitian ini bertujuan mengetahui jenis mikroplastik yang menjadi bahan pencemar di perairan laut Aceh Barat. Penelitian dilaksanakan pada Mei 2024 dengan pengambilan sampel menggunakan ember, plankton net, dan botol sampel. Identifikasi dilakukan di Laboratorium Produktivitas Lingkungan Perairan Universitas Teuku Umar dengan mengamati 1 ml sampel air laut di bawah mikroskop binokuler perbesaran 4 × 0,10 µm menggunakan pola pengamatan zig-zag. Hasil menunjukkan empat jenis mikroplastik, yaitu fiber (540) partikel, fragment (518) partikel, film (598) partikel, dan pellet (23) partikel. Keberadaan mikroplastik pada lokasi penelitian diduga berkaitan dengan aktivitas masyarakat nelayan di pesisir pantai dan muara sungai yang berkontribusi terhadap masuknya sampah ke perairan. Disimpulkan bahwa terdapat empat jenis mikroplastik dengan jenis pellet tidak ditemukan pada stasiun II karena rendahnya aktivitas masyarakat. Perlu adanya langkah pengumpulan informasi komposisi mikroplastik secara lebih menyeluruh sebagai dasar pengelolaan lingkungan pesisir dan pengendalian pencemaran plastik di perairan laut Kabupaten Aceh Barat. Kata Kunci: Mikroplastik, Jenis Mikroplastik, Aceh Barat.ABSTRACTThe types of microplastics in marine waters are important to note because they describe the characteristics and sources of pollution found in these waters. This study aims to determine the types of microplastics that are pollutants in the marine waters of West Aceh. The study was conducted in May 2024 by taking samples using buckets, plankton nets, and sample bottles. Identification was carried out at the Aquatic Environmental Productivity Laboratory of Teuku Umar University by observing 1 ml of seawater samples under a binocular microscope at a magnification of 4 × 0.10 µm using a zig-zag observation pattern. The results showed four types of microplastics, namely fiber (540) particles, fragment (518) particles, film (598) particles, and pellet (23) particles. The presence of microplastics at the study site is suspected to be related to the activities of fishing communities on the coast and river estuaries that contribute to the entry of waste into the waters. It was concluded that there were four types of microplastics with pellets not found at station II due to low community activity. There is a need for more comprehensive steps to collect information on the composition of microplastics as a basis for coastal environmental management and controlling plastic pollution in the marine waters of West Aceh Regency.Keywords: Microplastics, Type of Microplastic, West Aceh.
Co-Authors Afiat, Sukra Ardi Prabowo Decky Avrilianda Deri Anggraini Dewinta, Astrid Fauzia Endah Anisa Rahma, Endah Anisa Eny Winarti Friyuanita Lubis Hayatun Nufus Hendri Kurniawan, Hendri Heriansyah Hilwati Hindersah Ipanna Enggar Susetya, Ipanna Enggar Islama, Dini Jihannuma Adibiah Nurdini Kardiyanto, Anton Kintan Limiansih Lianda, Desi Mai Suriani Melinda, Sri Mita Setyowati Mursawal, Asri Murti, Rafidati Diyana Karya Nanik Wijayati Nuni Widiarti Nurhidayati, Hesti Putra, Pandia Rahmi, Mira Mauliza Ramadhan, Azhari Razali Riki Saputra, Riki Ronal Kurniawan Rudi Hermi Saiful Amin Samudra, Arung Sri Wahyuni Sri Wahyuni Suyatini, Maria Magdalena Titik Kushandayani Ulma, Opinda Sakbania