Agung J. Losung
Universitas Sam Ratulangi

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STRUKTUR KOMUNITAS EKOSISTEM PADANG LAMUN DI PERAIRAN DESA BORGO KECAMATAN BELANG KABUPATEN MINAHASA TENGGARA (Community Structure of Ecosystem Seagrass Beds in Water of Borgo Village, Belang District, Southeast Minahasa Regency) Agung J. Losung; Carolus P. Paruntu; Billy Th. Wagey; Kakaskasen A. Roeroe; Fitje Losung; Hariyani Sambali
JURNAL PESISIR DAN LAUT TROPIS Vol. 11 No. 1 (2023): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.11.1.2023.53078

Abstract

This research was conducted in the coastal waters of Borgo Village, Belang District, SoutheastMinahasa Regency using the line transect method adopted by the Seagrass Watch method. This studyaims to determine the community structure and physical-chemical environmental factors of seagrassbeds in the waters of Borgo Village, Belang District, Southeast Minahasa Regency. The results of thisstudy obtained 3 types of seagrass identified in the waters of Borgo Village, namely: Enhalus acoroides,Thalassia hemprichii, and Syringodium isoetifolium, with an average value of species density belongingto scale 2 with a density level of 25-75 ind/m2 which is included in sparse density conditions (11.99individuals/m2); the average value of relative concealment is classified as less rich/less healthy(33.34%); the species index is included in the low category, namely H'<1 (0.68); the uniformity index isincluded in the large/high category (0.33) the dominance index is included in the medium category(0.75). The parameter value of pH 8.00 is in the range of quality standard values while the temperatureof 32.00° C, brightness of 0.29 m, and salinity of 29.98 o/oo are not in the range of quality standardvalues.Keywords: Seagrass Community Structure, Species Composition, Borgo Village Waters ABSTRAKPenelitian ini dilaksanakan di wilayah pesisir perairan Desa Borgo, Kecamatan Belang,Kabupaten Minahasa Tenggara dengan menggunakan metode metode line transect yang diadopsidengan metode SeagrassWatch. Penelitian ini bertujuan untuk mengetahui struktur komunitas danfaktor lingkungan fisika-kimia padang lamun di perairan Desa Borgo, Kecamatan Belang, KabupatenMinahasa Tenggara. Hasil penelitian ini memperoleh 3 jenis lamun yang terindentifikasi di perairanDesa Borgo yaitu: Enhalus acoroides, Thalassia hemprichii dan Syringodium isoetifolium, dengan nilairata-rata kerapatan jenis tergolong dalam skala 2 dengan tingkat kerapatan 25-75 ind/m2 yangtermasuk dalam kondisi kerapatan jarang (11,99 individu/m2); nilai rata-rata penutupan relatif jenistergolong kurang kaya/kurang sehat (33,34%); indeks keanekaragaman jenis termasuk dalam kategorirendah yaitu H’<1 (0,68); indeks keseragaman termasuk dalam kategori besar/tinggi (0,33) indeksdominansi termasuk dalam kategori sedang (0,75). Nilai parameter pH 8,00 berada pada kisaran nilaibaku mutu sedangkan suhu 32,00° C, kecerahan 0,29 m dan salinitas 29,98 o/oo tidak berada padakisaran nilai baku mutu.Kata kunci: Struktur Komunitas Lamun, Komposisi Jenis, Perairan Desa Borgo