KONDISI PADANG LAMUN DI SEKITAR PERAIRAN MOKUPA KECAMATAN TOMBARIRI KABUPATEN MINAHASA

Abstract

Seagrass is the only flowering marine plant that lives permanently in shallow coastal waters and plays a key ecological role. This study aims to determine the types of seagrasses, community structure and current condition of seagrass beds nearby Mokupa waters. The method that used in this studywas the  line transect method. This study found 5 types of seagrass and identified as : Enhalus acoroides, Halophila ovalis, Thalassia hemprichii, Cymodocea rotundata, and Syringodium isoetifolium. The average species density value was 25 ind/m², frequency was 1.26, species cover is 25.5. The highest important value index (INP) belongs to  Cymodocea rotundata (101.5%). The diversity index (H’) was moderate with an average value of 1.17 and the dominance index is low with an average C value of 0.32. Based on the seagrass cover category, the seagrass beds in the study area were categorized as "rare"  (0-25%). Water temperature ranging from 29 to34°C and water salinity 25 to 29‰. The substrate types found weresandy mud, muddy sand, and rubbels.Keywords : Seagrass, Percentage of Closure, Community Structure, Mokupa Beach