Seagrass community at tawang coast pacitan in rainy and dry season. (March 2019)

• Record Type: Journal Article
• Authors: Kusuma Dewi, Nurul; Sasmito, Anggit; Rasdianah Aziz, Isna; Parwito, ; Nurfitri Sari, Kiky
• Is Part Of: Journal of physics. Volume 1175(2019)
• Publication Date: 2019-03
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1175/1/012007
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Ecologically, the presence of seagrass contributes to an ecosystem offering for human need. This research was conducted to study the seagrass appearance at Tawang Coast Pacitan, East Java, Indonesia during rainy and dry season using a percentage of the covered area and physico chemical factors. The method used was transect-plot. The physical and chemical factors measured included temperature, light penetration, rapidity flow, high water rate, salinity, wave level, sediment texture, pH, dissolved oxygen, and nutrients such as ammonium, nitrate, C-organic and phosphorus pentoxide. The result showed that seagrass bed in Tawang Coast was formed by three seagrass: Cymodocea rotundata, Thalassia hemprichii, and Halophila ovalis . The average percentage of seagrass cover was 37.66 % in rainy season and 32.49% in dry season. According to decree of the Minister of Environment No. 200 in 2004, the seagrass bed conditions in Tawang Coast in the rainy season and dry season were categorized into less rich/less healthy. The decline in the seagrass covering percentage in the dry season was caused by light and temperature factors. Seagrasses in Tawang Coast were associated with different types of organisms.