Jane Mamuaya
FPIK Unsrat

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FORAMINIFERA BENTIK PADA TERUMBU KARANG PULAU BUNAKEN Renaldi Kalalo; Jane Mamuaya; Hermanto W.K Manengkey; Janny D Kusen; Rignolda Djamaludin; Rose Mantiri
JURNAL PESISIR DAN LAUT TROPIS Vol. 8 No. 1 (2020): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.8.1.2020.27464

Abstract

Study of benthic foraminifera on the coral reefs of Bunaken Island, North Sulawesi Province, was carried out with the aim of providing information regarding the description, distribution and FoRAM Index values on the coral reef environment of Bunaken Island. Sediment sampling in the field was carried out at 5 stations around the island, each area has been plotted on the map, with 3 repetitions and using a SCUBA tool at a depth of 3-8 meters. From observations of sediment surface samples at 15 points in 5 stations spread over Bunaken Island, 5,770 benthic foraminifera specimens have been identified. 81 species from 26 genera of foraminifera were identified and they were then grouped into functional groups to obtain the FoRAM Index. The Index were ranged from 7.18 to 10.5. This indicates that the environment of the coral reef waters around the island is still in good condition. Keywords : Benthic Foraminifera, Coral Reef Ecosystem, Bunaken Island. ABSTRAK            Studi foraminifera bentik pada terumbu karang Pulau Bunaken Provinsi Sulawesi Utara dilakukan dengan tujuan untuk menyediakan informasi menyangkut deskripsi, peta sebaran dan nilai FoRAM Index pada lingkungan terumbu karang Pulau Bunaken. Kegiatan pengambilan sampel sedimen di lapangan dilakukan pada 5 stasiun di perairan Pulau Bunaken yang masing-masing areanya telah diplot dalam peta, dengan 3 kali pengulangan dan menggunakan alat SCUBA pada kedalaman 3-8 meter. Dari hasil pengamatan terhadap sampel sedimen permukaan dasar perairan pada 15 titik dalam 5 stasiun tersebar di Pulau Bunaken telah teridentifikasi sebanyak 5.770 spesimen foraminifera bentik. Hasil identifikasi foraminifera tersebut diperoleh 81 spesies foraminifera bentik yang termasuk dalam 26 genus. Spesies-spesies ini kemudian dikelompokkan ke dalam kelompok fungsional untuk mendapatkan FoRAM Index, dan diperoleh kisaran 7,18-10,5. Nilai ini mengindikasikan bahwa lingkungan perairan terumbu karang di sekitar pulau tersebut ada dalam keadaan masih baik dan sehat. Kata Kunci : Foraminifera Bentik, Ekosistem Terumbu Karang, Pulau Bunaken.
MORFOMETRI GISIK KAWASAN PANTAI WISATA BAHARI SARIO KOTA MANADO Zulkifli Otoluwa; Rignolda Djamaluddin; Royke M Rampengan; Jane Mamuaya; Esry T Opa; Joudy RR Sangari
JURNAL PESISIR DAN LAUT TROPIS Vol. 9 No. 2 (2021): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.9.2.2021.34851

Abstract

Beach formation has an important role in protecting land from the action of the sea and it is useful for recreation, conservation and other uses. In “Wisata Bahari Sario” Kota Manado coastal area there is still a particular area of beach that is used for various purposes, so it is important to study its morphology. This research was conducted with the aim of describing morphology and analyzing oceanographic factors that affected the dynamic process of beach morphology. The results showed that the beach had an area of 422.69 m2, with the criteria for short slopes in the Northeast and long slopes in the Southwest. The shapes of the beach surface were in the form of gutters and shoots, their appearance was more visible towards the Southwest. In general, the deposition process took place more intensively in the Southwestern part of the beach. Keywords: Beach, Morphology, Slope, Deposition