GOZION, AKWILA (2022) KELIMPAHAN NUDIBRANCHIA SERTA HUBUNGANNYA DENGAN BAHAN ORGANIK SEDIMEN DI PERAIRAN PULAU PANJANG JEPARA (22m238). Undergraduate thesis, Universitas Diponegoro.

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Abstract

ABSTRAK
vi
Akwila Gozion. 26010116120021. Kelimpahan Nudibranchia Serta Hubungannya
Dengan Bahan Organik Sedimen di Perairan Pulau Panjang Jepara (Siti
Rudiyanti dan Suryanti).
Nudibranchia merupakan salah satu gastropoda laut yang masuk kedalam
anggota Subkelas Opisthobranchia. Ciri Nudibranchia yang menjadi perbedaan
dari gastropoda lainnya yaitu adanya insang telanjang. Penelitian ini dilaksanakan
pada September - Desember 2020 di Pulau Panjang, Kabupaten Jepara, dengan
tujuan untuk mengetahui jenis dan kelimpahan Nudibranchia serta mengetahui
hubungan antara bahan organik sedimen dengan kelimpahan Nudibranchia.
Metode yang digunakan dalam penelitian ini yaitu metode observasi, sedangkan
metode yang diterapkan pada saat pengamatan di lapangan yaitu metode Belt
Transect dengan mengamati 5 stasiun, tiap stasiun terdiri dari 3 line transect
dengan sekali sampling pada tiap line transect, pengamatan selebar 2 meter kanan
dan kiri dengan panjang 25 meter pada tiap line transect. Identifikasi
Nudibranchia menggunakan buku 1001 Nudibranchias Catalogue Of Indo-Pacific
Sea Slug dan World Register of Marine Species. Indeks Ekologi yang dianalisis
meliputi kelimpahan, indeks keanekaragaman, indeks keseragaman, indeks
dominansi. Nudibranchia yang ditemukan di perairan Pulau Panjang sebanyak 3
spesies yaitu Jorunna funebris, Chromodoris lineolata dan Phyllidiella nigra.
Kelimpahan tertinggi berada pada stasiun 5 yaitu dengan nilai 63 ind/300m
2
dan
kelimpahan terendah terdapat pada stasiun 3 yaitu dengan nilai 5 ind/300m
2
.
Keanekaragaman Nudibranchia di perairan Pulau Panjang cenderung rendah
karena hanya stasiun 3 yang memiliki kategori keanekaragaman sedang dengan
nilai 1,427. Kandungan bahan organik sedimen pada perairan Pulau Panjang
cukup tinggi yaitu 63,5%. Kelimpahan Nudibranchia dengan bahan organik
sedimen memiliki nilai koefisien korelasi sebesar 0,935. Berdasarkan nilai
koefisien korelasi tersebut masuk kedalam kategori hubungan sangat kuat.
Kata Kunci : Bahan Organik, Jepara, Kelimpahan, Nudibranchia, Pulau Panjang

ABSTRACT
vii
Akwila Gozion. 26010116120021. Nudibranchia abundance and its relationship
with organic sediments in the waters of Panjang Island, Jepara (Siti Rudiyanti
and Suryanti).
Nudibranchs categorize into the subclass of Opisthobranchia. The presence
of naked gills, which is the meaning of the name Nudibranchia, identifies
Nudibranchia from other gastropods. This research was conducted in September
– December 2020 in Panjang Island, Jepara Regency. The method used in this
study is observation, while the method used during field observations is Belt
Transect by observing 5 stations, each station consists of 3 line transects with one
sampling on each line transect, observations are 2 meters wide right and left with
a length of 25 meters on each line transect, and observations are 2 meters wide
right and left with a length of 25 meters on each line transect. The book 1001
Nudibranchias Catalog Of Indo-Pacific Sea Slug and the World Register of
Marine Species can be used for identification. Abundance, diversity index,
uniformity index, and dominance index are some of the ecological indices
analyzed. Jorunna funebris, Chromodoris lineolata, and Phyllidiella nigra are
among the three Nudibranchia species found in the waters of Pulau Panjang.
Station 5 had the largest abundance, with a value of 63 ind/300m
2
, whereas
station 3 had the lowest abundance, with a value of 5 ind/300m
2
. Because only
station 3 has a medium diversity category with a score of 1.427, Nudibranchia
diversity on Panjang Island waters is low. The content of organic matter in the
sediment of Panjang Island's waters is quite high, at 63.5 %. Nudibranchia
abundance with the sedimentary organic matter has a correlation coefficient
value of 0.935. Based on the value of the correlation coefficient is included in the
category of very strong relationship.
Keywords : Abundance, Jepara Regency, Nudibranchia, Organic Matter,
Panjang island

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