SIREGAR, AHMAD FATHONI (2022) STRUKTUR KOMUNITAS LAMUN (SEAGRASS) DI PERAIRAN PULAU PANJANG, KABUPATEN JEPARA, JAWA TENGAH (22IK353). Undergraduate thesis, Universitas Diponegoro.

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Abstract

ABSTRAK

Ahmad Fathoni Siregar. 260 401 181 401 14. Struktur Komunitas Lamun
(Seagrass) di Perairan Pulau Panjang, Kabupaten Jepara, Jawa Tengah. (Sri
Redjeki dan Ita Riniatsih)
Ekosistem lamun memiliki peranan yang sangat penting baik secara fisik
maupun ekologis yang membuat padang lamun sangat penting untuk terus dijaga
dan didata keberadaannya. Padang lamun juga tersebar hingga perairan Jepara,
yakni perairan Pulau Panjang. Penelitian ini bertujuan untuk mengetahui jenis
lamun dan mengetahui nilai persentase tutupan, kerapatan dan nilai indeks ekologi
lamun di perairan Pulau Panjang, Kabupaten Jepara, Jawa Tengah. Penelitian ini
dilaksanakan pada bulan November 2021. Metode yang digunakan dalam penelitian
ini adalah survei eksploratif yang melakukan pengambilan data langsung di
lapangan. Hasil penelitian disajikan secara deskriptif kuantitatif, yaitu memberikan
deskripsi dan melaporkan data yang diperoleh peneliti apa adanya sesuai kejadian
yang berlangsung pada saat penelitian. Jenis lamun yang ditemukan yaitu Enhalus
acoroides, Thalassia hemprichii, Cymodocea rotundata, Oceana serrulata, dan
Halodule uninervis. Hasil penelitian menunjukkan persentase tutupan lamun
tertinggi terdapat pada stasiun 2 yaitu 39,58 %, sedangkan tutupan lamun terendah
terdapat pada stasiun 3 yaitu 11,93 %. Kerapatan tertinggi ditemukan pada stasiun
2 yaitu sebanyak 1101 tegakan/m2
, sedangkan kerapatan terendah ditemukan pada
stasiun 3 yaitu sebanyak 301 tegakan/m2
. Lamun yang paling sering dijumpai
adalah jenis Oceana serrulata. Keanekaragaman lamun yang didapat termasuk
dalam kategori rendah sampai sedang pada ketiga stasiun, lalu keseragaman di
ketiga stasiun tergolong tinggi dengan dominasi di ketiga stasiun yang tergolong
rendah sampai sedang.
Kata Kunci: Pulau Panjang, Lamun, Tutupan, Kerapatan, Indeks Ekologi

ABSCTRACT

Ahmad Fathoni Siregar. 260 401 181 401 14. Structure of the Seagrass
Community in Long Island Waters, Jepara Regency, Central Java. (Sri Redjeki
and Ita Riniatsih)
Seagrass ecosystems have a very important role both physically and
ecologically which makes seagrass beds very important to be maintained and
recorded their existence. Seagrass beds are also spread to the waters of Jepara,
namely the waters of Panjang Island. This study aims to determine the type of
seagrass and determine the percentage value of cover, density, and ecological
index value of seagrass in the waters of Panjang Island, Jepara Regency, Central
Java. This research was carried out in November 2021. The method used in this
research is an exploratory survey that collects data directly in the field. The results
of the research are presented in a quantitative descriptive manner, namely
providing a description and reporting the data obtained by the researcher as it is
according to the events that took place at the time of the study. The types of
seagrass found were Enhalus acoroides, Thalassia hemprichii, Cymodocea
rotundata, Oceana serrulata, and Halodule uninervis. The results showed that the
highest percentage of seagrass cover was at station 2, which was 39.58%, while
the lowest seagrass cover was at station 3, which was 11.93%. The highest density
was found at station 2, which was 1101 stands/m2, while the lowest density was
found at station 3, which was 301 stands/m2. The most common seagrass found is
Oceana serrulata. The seagrass diversity obtained was in the low to moderate
category at the three stations, then the uniformity at the three stations was high
with dominance in the three stations being low to moderate.
Keywords: Panjang Island, Seagrass, Cover, Density, Ecological Index

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