STRUKTUR KOMUNITAS MOLUSKA DI KAWASAN MANGROVE ALAMI DAN REHABILITASI PESISIR SELATAN PULAU LOMBOK
Authors
Dining Aidil Candri , Laily Hunawatun Sani , Hilman Ahyadi , Baiq FaristaDOI:
10.29303/jbt.v20i1.1385Published:
2020-04-23Issue:
Vol. 20 No. 1 (2020): Januari - AprilKeywords:
Composition, Mollusks, Mangroves, Natural, RehabilitationArticles
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Abstract
Abstrak: Struktur komunitas moluska di suatu ekosistem mangrove dapat digunakan sebagai indikator status kesehatan ekosistem tersebut. Dalam penelitian ini dilakukan pembandingan antara struktur komunitas moluska di ekosistem mangrove alami dan rehabilitasi untuk melihat adanya perbedaan struktur moluska di kedua kondisi ekosistem tersebut. Penelitian ini telah dilakukan pada bulan Maret - Juni 2019 pada 2 tipe ekosistem mangrove yaitu ekosistem mangrove alami di Pemongkong, Lombok Timur dan ekosistem mangrove rehabilitasi di teluk Gerupuk, Lombok Tengah. Pengambilan data dilakukan dengan metode purposive random sampling dengan meletakkan 3 plot berukuran 1x1 m secara acak di dalam plot yang berukuran lebih besar (10x10 m) yang telah ditentukan sebelumnya. Adapun hasil penelitian menunjukkan terdapat 37 spesies moluska yang termasuk ke dalam 14 famili. 14 spesies ditemukan di kedua lokasi penelitian, 3 spesies hanya ditemukan di kawasan rehabilitasi, dan 20 spesies lainnya hanya ditemukan di kawasan mangrove alami Pemongkong. Ekosistem mangrove alami Pemongkong memiliki kemelimpahan moluska lebih tinggi yakni mencapai 77.692 ind/m2, dibandingkan dengan ekosistem mangrove rehabilitasi yang hanya mencapai 48.746 ind/m2. Famili Potamididae memiliki keanekaragaman dan kemelimpahan tertinggi di kedua lokasi penelitian. Berdasarkan proporsi setiap spesies dalam komunitas moluska yang ditemukan, persamaan kedua lokasi penelitian yang ditunjukkan dengan Persent similaritas (PS) tergolong rendah yakni hanya mencapai kemiripan 36,36% .Keanekaragaman vegetasi mangrove, usia vegetasi, serta kondisi lingkungan dapat menjadi faktor yang mendukung perbedaan struktur komunitas moluska tersebut.
Kata kunci: Struktur komunits, Moluska, Mangrove, Alami, Rehabilitasi
Abstract: Mollusks community structure in a mangrove swamp can be used to describe the status of mangrove ecosystemââ¬â¢s health. In this research, the mollusks community ini natural and rehabilitation mangrove ecosystem were compared in order to find the difference between these ecosystems. This research held on March to June 2019 at 2 types of mangrove ecosystem such as natural ecosystem at Pemongkong, East Lombok and rehabilitation ecosystem at Gerupuk bay. Data collection method used purposive random sampling by placed 3 plots sized 1x1 m randomly in a larger plot (10x10 m) which have been determine before. The result showed that there are 37 species of association of mollusks which belong to 14 families. 14 species found in both locations, 3 species only found at rehabilitation ecosystem, and 20 species left only found at natural mangrove ecosystem at Pemongkong. Natural mangrove ecosystem Pemongkong had higher abundance of association mollusks with number of abundance 77.692 ind/m2 against rehabilitation ecosystem which only reached 48.746 ind/m2. Potamididae has the highest diversity and abundance value in both location. The resemblance of these 2 ecosystem based on the proportion of each species in the mollusks community showed by Similarity Presentation categorized as low level which only reach 36,36% of similarity. Mangrove diversity, itââ¬â¢s age, and the environmental condition may caused the difference in those mollusks structure community.
Key words: Structur community, Mollusks, Mangrove, Natural, Rehabilitation
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Author Biographies
Dining Aidil Candri, University of Mataram
Laily Hunawatun Sani, Universitas Mataram
Hilman Ahyadi, Department of Biology, Faculty of Mathematics and Natural Sciences, University of Mataram
Baiq Farista, Department of Biology, Faculty of Mathematics and Natural Sciences, University of Mataram
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