Electronic Theses and Dissertation

Kualitas air merupakan karakteristik mutu yang diperlukan untuk pemanfaatan tertentu dari berbagai sumber air. Berbagai jenis aktivitas manusia seperti pengalihan fungsi pesisir pantai dan pengalihan fungsi ekosistem mangrove sebagai tempat wisata, lahan budidaya perikanan atau tambak serta pemukiman penduduk yang semakin hari semakin meningkat telah menimbulkan berbagai masalah ekologi yang berpengaruh terhadap kualitas air dan sebaran spesies mangrove. Penelitian bertujuan mengetahui sebaran mangrove dan kualitas air di Pesisir Pantai Suak Timah Kecamatan Samatiga Kabupaten Aceh Barat. Penelitian menggunakan pendekatan kuantitatif dengan jenis penelitian survei lapangan (observasi). Penentuan sampel secara purposive sampling. Hasil penelitian menunjukkan bahwa pola sebaran mangrove di pesisir pantai Suak Timah dapat dikategorikan mengelompok, dikarenakan hasil perhitungan Indeks Morisita > 0 pada setiap stasiun penelitian. Semua parameter fisika kualitas air di kawasan ekosistem mangrove memenuhi standar baku air laut. Parameter kimia yang memenuhi standar baku air laut hanya salinitas dan pH air, sedangkan DO tidak memenuhi standar. Parameter biologi yaitu kandungan bakteri Coliform tidak memenuhi standar baku air laut.

Water quality refers to the characteristics of water necessary to support specific uses across various sources. Increasing human activities such as the conversion of coastal areas and disruption of mangrove ecosystems for tourism, aquaculture, and settlement expansion have led to escalating ecological problems. These issues have significantly affected both water quality and the spatial distribution of mangrove species. This study aimed to analyze the distribution pattern of mangroves and the quality of coastal waters in Suak Timah, Samatiga Subdistrict, West Aceh Regency. A quantitative approach was applied using field survey (observation) methods. Samples were collected through purposive sampling. The results showed that mangrove distribution along the Suak Timah coast follows a clustered pattern, indicated by a Morisita Index value > 0 across all sampling stations. Physical water quality parameters met the marine water quality standards. Among chemical parameters, only salinity and pH complied with the standards, while dissolved oxygen (DO) levels did not. For biological parameters, the presence of Coliform bacteria exceeded the permissible limits based on marine water quality standards