Keanekaragaman Vegetasi Mangrove di Pantai Tanamon Sulawesi Utara (Diversity of Mangrove Vegetation in Tanamon Beach North Sulawesi)

Eka Yuningsih, Herni E.I Simbala, Febby E.F Kandou, Saroyo Sumarto

Abstract


AbstrakStudi keanekaragaman dan indeks nilai penting telah dilakukan pada vegetasi mangrove di kawasan Pantai Tanamon dengan menggunakan metode purposive sampling. Ukuran petak ditentukan dengan menggunakan kategori pengelompokan semai (2x2 m2), pancang (5x5 m2), tiang (10x10 m2) dan pohon (20x20 m2). Keanekaragaman vegetasi mangrove di Pantai Tanamon ditentukan dengan menggunakan rumus indeks keanekaragaman Shannon-Wienner. Hasil penelitian menunjukkan bahwa keanekaragaman vegetasi tergolong sedang dengan nilai indeks 1,412. Di kawasan Pantai Tanamon terdapat 6 jenis mangrove yaitu Avicennia marina, Sonneratia alba, Xylocarpus granatum, Rhizophora apiculata, Nypa fruticans dan Terminalia catappa. Indeks nilai penting tertinggi pada pada X. granatum untuk kategori semai (72,977 %), A. marina untuk kategori pancang (80,357 %), A. marina untuk kategori tiang (91,623 %) dan S. alba untuk kategori pohon (142,191 %).Kata kunci: mangrove, keanekaragaman, PantaiTanamonAbstractA study on the diversity and the importance value index of mangrove vegetation in the area of Tanamon Beach was conducted using purposive sampling method. Plot size was determined using classification category of seedling (2x2 m2), stake (5x5 m2), pole (10x10 m2) and tree (20x20 m2). The diversity of mangrove vegetation in the Tanamon Beach was determined using the diversity index formula of Shannon-Wienner. The results indicated that vegetation diversity was medium and the index value was 1.412. The mangrove vegetation consisted of 6 species, i.e. Avicennia marina, Sonneratia alba, Xylocarpus granatum, Rhizophora apiculata, Nypa fruticans and Terminalia catappa. The highest importance-value-index was in the X. granatum seedling (72.977 %), A. marina stake (80.357 %), A. marina pole (91.623 %) and S. alba tree (142.191 %).Keywords: mangrove, diversity, Tanamon Beach

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DOI: https://doi.org/10.35799/jbl.3.2.2013.4434

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Copyright (c) 2014 Eka Yuningsih, Herni E.I Simbala, Febby E.F Kandou, Saroyo Sumarto

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Publisher:
Department of Biology
Faculty of Mathematics and Natural Sciences
Universitas Sam Ratulangi. Manado, North Sulawesi


 

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