%0 Generic
%A AWWALIYANSYAH , AKBAR
%C UNIVERSITAS LAMPUNG
%D 2024
%F eprints:82707
%I FAKULTAS PERTANIAN
%T STRUKTUR KOMUNITAS KARANG DAN IKAN KARANG    DI PERAIRAN PULAU PAHAWANG
%U http://digilib.unila.ac.id/82707/
%X Pulau Pahawang merupakan salah satu pulau di Provinsi Lampung yang memiliki  ekosistem laut yang beragam, salah satunya adalah terumbu karang. Terumbu karang    dimanfaatkan biota asosiasinya sebagai tempat mencari makan, berlindung, dan ber-  kembang biak. Penelitian bertujuan untuk menganalisis struktur komunitas karang    dan ikan karang, serta menganalisis keterkaitan hubungan tutupan karang dan kompo-  sisi ikan karang dengan faktor fisika kimia perairan. Penelitian dilaksanakan pada bu-  lan Agustus 2023 yang berlokasi di perairan Pulau Pahawang. Pengambilan data ka-  rang menggunakan metode underwater photo transect (UPT) dan pengambilan data    ikan karang menggunakan metode underwater visual census (UVC). Data kualitas fi-  sika kimia perairan yang diambil adalah suhu, kecerahan, arus, salinitas, pH, DO, fos-  fat, dan nitrat. Hubungan persentase tutupan karang dan komposisi ikan karang de-  ngan parameter fisika kimia perairan dianalisis menggunakan metode principal com-  ponent analysis (PCA). Persentase tutupan karang di keempat stasiun dengan dua ke-  dalaman berbeda berkisar antara 41,75-63,3% yang dikategorikan sedang hingga    baik. Nilai indeks keanekaragaman karang dan ikan karang pada semua stasiun di 2  kedalaman yang berbeda berturut-turut berkisar 2,1828-2,9031 dan 2,1670-2,5886  yang dikategorikan rendah hingga sedang. Persentase tutupan karang dan komposisi  ikan karang di perairan Pulau Pahawang memiliki korelasi positif dengan kecerahan,  arus, DO, pH, salinitas dan berkorelasi negatif dengan suhu, fosfat, dan nitrat.  Kata kunci: karang, ikan karang, struktur komunitas, principal component analysis.    ABSTRACT    THE COMMUNITY STRUCTURE OF CORAL AND CORAL FISH    IN THE WATERS OF PAHAWANG ISLAND    By    AWWALIYANSYAH AKBAR    Pahawang Island is one of the islands in Lampung Province that has diverse marine  ecosystems, one of which is coral reefs. Coral reefs are utilized by their associated  biota as feeding ground, nursery ground, and spawning ground. The study aimed to  analyze the structure of coral and reef fish communities, and analyze the relationship    between coral cover and coral-associated fish composition with physical and chemi-  cal factors of the waters. The research was conducted in August 2023, located in the    waters of Pahawang Island. Coral data were collected using the underwater photo  transect (UPT) method and reef fish data were collected using the underwater visual    census (UVC) method. Physical and chemical datas of sea water are water tempera-  ture, vlarity, current, salinity, pH, DO, phosphate and nitrate. The relationship bet-  ween the percentage of coral cover and coral-associated fish composition with    physico-chemical parameters was analyzed using the principal component analysis  (PCA) method. The percentage of coral cover at the four stations with two different  depths ranged from 41.75-63.3% which was categorized as moderate to good. Coral  and coral-associated fish diversity index at all stations at two different depths ranged  from 2.1828-2.9031 and 2.1670-2.5886, respectively, which were categorized as low    to moderate. Percentage of coral cover and coral-associated fish composition in Paha-  wang Island waters had a positive correlation with clarity, current, DO, pH, Salinity    and negatively correlated with water temperature, phosphate, and nitrate.  Keywords: coral, reef fish, community structure, principal component analysis.