Hubungan Komposisi Bentik dengan Struktur Fungsional Komunitas Ikan Terumbu Karang di Perairan Kecamatan Kepala Madan, Kabupaten Buru Selatan

Abstract

Ekosistem terumbu karang berperan penting dalam mendukung keanekaragaman hayati laut, termasuk komunitas ikan terumbu yang berasosiasi dengan habitat bentik. Penelitian ini bertujuan menganalisis komposisi bentik, struktur komunitas ikan terumbu, serta hubungan antara komposisi bentik dan struktur fungsional ikan terumbu di perairan Kecamatan Kepala Madan, Kabupaten Buru Selatan. Data bentik dikumpulkan menggunakan metode Underwater Photo Transect (UPT), sedangkan data ikan terumbu menggunakan Underwater Visual Census (UVC) pada 15 lokasi penelitian. Analisis dilakukan menggunakan Principal Component Analysis (PCA). Hasil menunjukkan bahwa komposisi bentik didominasi karang keras (24,77%) dan patahan karang (21,03%), dengan kondisi terumbu karang umumnya tergolong buruk. Ditemukan 8.652 individu ikan terumbu dari 214 spesies dan 32 famili, dengan famili Caesionidae sebagai famili dominan. Struktur fungsional ikan terumbu didominasi kelompok planktivore. Hasil PCA menunjukkan adanya hubungan antara komposisi bentik dan struktur fungsional ikan terumbu.

Coral reef ecosystems support high marine biodiversity, including reef fish communities associated with benthic habitats. This study aimed to analyze benthic composition, reef fish community structure, and their relationship in the waters of Kepala Madan District, South Buru Regency. Benthic and reef fish data were collected using Underwater Photo Transect (UPT) and Underwater Visual Census (UVC) methods at 15 stations. Data were analyzed using Principal Component Analysis (PCA). Benthic composition was dominated by hard coral (24.77%) and rubble (21.03%), with most reefs classified as poor. A total of 8,652 reef fish individuals representing 214 species and 32 families were recorded, with Caesionidae as the dominant family. The functional structure of reef fish was dominated by planktivores. PCA showed an association between benthic composition and reef fish functional structure.