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Asmar Hi Daud
Universitas Khairun
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture

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KAJIAN BIOEKOLOGI LAMUN DI PERAIRAN SOFIFI KOTA TIDORE KEPULAUAN, PROVINSI MALUKU UTARA Abdul Motalib Angkotasan; Asmar Hi Daud
TECHNO: JURNAL PENELITIAN Vol 5, No 1 (2016): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tk.v5i1.784

Abstract

Lamun merupakan salah satu ekosistem pesisir dan laut yang memiliki peran, fungsi dan manfaat yang besar bagi kelangsungan berbagai organism pesisir dan laut. Di perairan sofifi, terdapat ekosistem lamun namun belum diteliti. Dengan demikian maka penelitian ini sangat penting dilakukan. Penelitian ini menggunakan metode kuadran yang ditempatkan secara teratur pada lima lintasan. Data yang terkumpul selanjutnya dianalisis untuk mencari tingkat keanekaragaman jenis, indeks dominansi dan kerapatan jenisnya. Penelitian ini dilakukan di perairan Sofifi, kota Tidore Kepulauan. Berdasarkan hasil analisis ditemukan bahwa lamun jenis Enhalus acroides memiliki persentase tutupan yang tinggi dan indeks dominansi yang tinggi, sedangkan lamun jenis Syringodium isoitifolium memiliki nilai keanekaragaman jenis yang tinggi yakni sebesar 0.368. kondisi ekologi atau hidrooseanogafi baik suhu, salinitas maupun pH sangat baik dan cocok untuk pertumbuhan lamun. Terdapat substrat pasir berlumpur dan lumpur berpasir yang di temukan di kelima lintasan penelitian. Secara umum kondisi ekosistem lamun sangat baik dan kondisi ekologi sangat mendukung pertumbuhan lamun. Kedepan perlu adanya penelitian untuk mengidentifikasi jenis-jenis lamun di Maluku Utara.  Kata Kunci : Lamun, Ekosistem, Enhalus acroides, Keanekaragaman
Osmotik Word Level Teredo navalis Linnaeus 1758 in the Mangrove Root Habitat in East Halmahera, Indonesia Yumima Sinyo; Suparman Suparman; Asmar Hi Daud; Tamrin Robo
Techno: Jurnal Penelitian Vol 11, No 1 (2022): Techno Jurnal Penelitian
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/tjp.v11i1.4185

Abstract

This study aims to analyze the osmotic work level and pattern of osmoregulation at mollusc Teredo navalis Linnaeus 1758 in mangrove root habitats from different salinities. Case study was performed with the purposive sampling method. The research data were analyzed descriptively and quantitatively. The sampling technique is based on tidal conditions of seawater. Two locations was designated, namely station I and II in the north and the south respectively. Teredo navalis samples were taken from 2 types of mangrove roots. Analysis of the level of osmotic work using Automatic Micro Osmometer Roebling Type 13/13 DR. Salinity was measured using a refractometer. The results showed that the osmotic level of Teredo navalis in the root habitat of Rhizophora sp. and Avicennia sp. at high and low tide conditions varied, specifically 523 mOsm/l H2O, 123 mOsm/l H2O, and 32 mOsm/l H2O. This varying level of osmotic action results in three patterns of osmoregulation, viz. hyperosmotic, hypoosmotic, and isosmotic. The highest salinity was found in Avicennia sp. mangrove at station II and the lowest in Rhizophora sp. at low tide at station II, with the value was 31‰ and 10‰ respectively. Differences in salinity determine the osmoregulation pattern of Teredo navalis L in different habitats.
Co-Authors Abdul Motalib Angkotasan Suparman Suparman Tamrin Robo Yumima Sinyo