KONDISI PADANG LAMUN DI PANTAI DESA BASAAN SATU KECAMATAN RATATOTOK KABUPATEN MINAHASA TENGGARA

Abstract

Seagrass is the main component of the seagrass bed ecosystem. The existence and productivity of seagrass beds have a very important ecological role for life in the sea and on land. This research is to determine the type of seagrass, to determine the condition and structure of the seagrass community and environmental parameters on the coast of Basaan Satu Village. The method that the author uses is the quadratic transect method. This method is usually used to observe the community structure of seagrass beds using a line transect of 50 m and a square of 50×50 cm². Seagrass species identified in the coastal waters of Basaan Satu Village, Ratatotok District, Southeast Minahasa Regency, namely as many as 5 species including Syringodium isoetifolium, Thalassia hemprichii, Halodule uninervis, Halodule pinifolia, Enhalus acoroides and cymodocea rotundata. Seagrass cover per species was dominated by the species Syringodium isoetifolium, the highest density was for the species Syringodium isoetifolium, the highest important value index for seagrass was found for the species Thalassia hemprichii with a value of 102.26%, the diversity index value was 0.93 which was classified as moderate, and the index value dominance is equal to 0.53. low category. Environmental parameters of seagrass beds at the study site have a range of values: temperature 31.47-33.39°C, salinity 29.08-30.49 ppt, dissolved oxygen 6.55-9.67, pH 9.23- 9.94, turbidity 0-2.6, and the substrate found was sand, muddy sand, crushed coral sand, and coral rubble.

Keywords: Seagrass Conditions, Community Structure, Basaan Satu Village