ISKANDAR, MUHAIMIN (2023) PERBANDINGAN KONDISI PADANG LAMUN DI PERAIRAN PULAU KARIMUNJAWA DAN PERAIRAN JEPARA, JAWA TENGAH (23dik379). Undergraduate thesis, Fakultas Perikanan dan Ilmu Kelautan.

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Abstract

ABSTRAK
(Muhaimin Iskandar, 260 401 191 300 51. Perbandingan Kondisi Padang Lamun di Perairan Pulau Karimunjawa dan Perairan Jepara, Jawa Tengah. Suryono dan Hadi Endrawati.)
Perairan Pulau Karimunjawa dan Perairan Jepara berada di perairan pantai utara Jawa. Meningkatnya aktivitas manusia (antropogenik) di kedua lokasi, secara langsung maupun tidak langsung akan berpengaruh terhadap organisme laut yang ada di perairan tersebut, salah satunya adalah lamun. Penelitian ini bertujuan untuk mengetahui kondisi padang lamun berdasarkan komposisi, penutupan, dan indeks ekologi lamun di perairan Pulau Karimunjawa dan Perairan Jepara. Penelitian dilaksanakan pada bulan November sampai Desember 2022. Metode penelitian yang digunakan adalah metode survei. Penentuan lokasi sampling digunakan metode purposive sampling. Pengambilan data lamun dilakukan menurut metode LIPI. Hasil penelitian menunjukan terdapat 6 jenis lamun yang ditemukan di perairan Pulau Karimunjawa, yaitu Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Oceana serrulata, Halophila ovalis, dan Halodule uninervis. Sedangkan, di Perairan Jepara tidak ditemukan jenis Halodule uninervis sehingga hanya ditemukan 5 jenis lamun. Perairan Pulau Karimunjawa memiliki persentase penutupan lamun sebesar 26,31%, lebih besar dibanding Perairan Jepara yang memiliki persentase penutupan lamun sebesar 23,23%. Kesimpulan dari penelitian diketahui bahwa kondisi padang lamun di perairan Pulau Karimunjawa dan Perairan Jepara termasuk dalam kategori Miskin / Tidak Sehat (≤29,9%).
Kata Kunci: Penutupan Lamun, Indeks Ekologi, Kondisi Perairan, Ekosistem Pesisir

ABSTRACT
(Muhaimin Iskandar. 260 401 191 300 51. Comparison of Seagrass Meadow Condition in Karimunjawa Island and Jepara Waters, Central Java. Suryono and Hadi Endrawati.)
Karimunjawa Island and Jepara waters are located in the north coast of Java. Increasing human activities (anthropogenic) in both locations will directly or indirectly affect marine organisms in these waters, one of which is seagrass. This study aims to determine the condition of seagrass beds based on the composition, closure, and ecological index of seagrass in the waters of Karimunjawa Island and Jepara Waters. The research was conducted from November to December 2022. The research method used was survey method. Determination of sampling locations used purposive sampling method. Seagrass data collection was carried out according to the LIPI method. The results showed that there were 6 seagrass species found in Karimunjawa Island waters, namely Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Oceana serrulata, Halophila ovalis, and Halodule uninervis. Meanwhile, in Jepara Waters no Halodule uninervis species were found so that only 5 seagrass species were found. Karimunjawa Island waters have a seagrass closure percentage of 26.31%, greater than Jepara waters which have a seagrass closure percentage of 23.23%. In conclusion, it is known that the condition of seagrass beds in the waters of Karimunjawa Island and Jepara Waters is included in the Poor / Unhealthy category (≤29.9%).
Keywords: Seagrass Cover, Ecological Index, Water Condition, Coastal Ecosystems.

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