Maharditha, Relia and Dr. Ir. Guntur, MS and Andik Isdianto, ST, MT (2022) Struktur Komunitas Ikan Terumbu di Selat Sempu, Kabupaten Malang, Jawa Timur. Sarjana thesis, Universitas Brawijaya.
Abstract
Ekosistem terumbu karang memiliki banyak manfaat antara lain melindungi pantai dari gelombang dan arus yang kuat dan sebagai habitat, tempat bertelur, tempat berlindung dan sumber makanan bagi biota laut, salah satunya yaitu ikan terumbu. Ikan-ikan terumbu ini membentuk suatu komunitas di dalam ekosistem terumbu karang. Ikan-ikan tersebut memanfaatkan terumbu karang secara langsung maupun tidak langsung untuk kepentingan hidupnya. Sehingga apabila terumbu karang rusak atau hancur maka ikan terumbu juga akan kehilangan habitatnya. Selat Sempu memiliki terumbu karang yang tumbuh di sebelah timur dan barat Pulau Sempu. Kelimpahan ikan terumbu di perairan Selat Sempu mengalami penurunan, hal ini dikemukakan dari penelitian Luthfi pada tahun 2015, 2017 dan 2018. Terjadinya penurunan tutupan karang di perairan Selat Sempu ini diduga akibat eksploitasi masyarakat yang terus menerus dan adanya aktivitas manusia yang dapat menimbulkan kontaminan terhadap perairan. Penelitian dilaksanakan pada bulan Oktober 2021 hingga Februari 2022 di perairan Selat Sempu, Kabupaten Malang. Pengambilan data dilakukan pada 5 stasiun yaitu Banyu Tawar, Jetty, Rumah Apung, Waru-Waru dan Watu Meja. Pada persentase tutupan karang, setiap stasiun dilakukan penanaman transek permanen sebanyak 5 buah secara purpossive sampling dan kemudian dilakukan monitoring setiap 2 bulan sekali. Pengambilan data kelimpahan ikan terumbu diambil dengan metode Underwater Visual Census. Pada masing-masing site dilakukan pengambilan data parameter oseanografi sebagai data penunjang. Tujuan dari penelitian ini yaitu untuk mengetahui kelimpahan, keanekaragaman, keseragaman, dan dominansi ikan terumbu di Selat Sempu, serta hubungan antara tutupan karang dengan kelimpahan ikan terumbu. Hasil pengambilan data karang diolah pada software CPCe dengan output berupa persentase tutupan, sedangkan data ikan terumbu diolah dengan Microsoft Excel dan SPSS kelimpahan dan hubungannya dengan tutupan karang hidup. Hasil kelimpahan ikan terumbu di Selat Sempu mengalami peningkatan dari penelitian sebelumnya. Kelimpahan Ikan Terumbu di bulan Oktober 2021 sebanyak 0,57 ind/m2. Pada bulan Desember 2021, rata-rata nilai kelimpahan ikan terumbu di Selat Sempu 0,62 ind/m2. di bulan Februari 2022, rata-rata kelimpahan ikan di Selat Sempu sebanyak 0,57 ind/m2. Pada uji korelasi didapat nilai korelasi sebesar 0,64, sehingga hubungan antara tutupan karang hidup dan ikan terumbu berkategori “kuat”.
English Abstract
Coral reef ecosystems have so many benefits, including protecting the coast from strong waves and currents and as a habitat, spawning grounds, shelter and food source for marine biota, which is reef fish. These reef fish form a community in the coral reef ecosystem. These fish use coral reefs directly or indirectly for the benefit of their lives. So if coral reefs are damaged or destroyed, reef fish will also lose their habitat. Sempu Strait has coral reefs that grow to the east and west of Sempu Island. The abundance of reef fish in the waters of the Sempu Strait has decreased, this is stated from Luthfi's research in 2015, 2017 and 2018. The decline in coral cover in the waters of the Sempu Strait is thought to be due to continuous community exploitation and human activities that can cause contaminants in the water. The research was carried out from October 2021 to February 2022 in the waters of the Sempu Strait, Malang Regency. Data collection was carried out at 5 stations, namely Banyu Tawar, Jetty, Floating House, Waru-Waru and Watu Meja. On the percentage of coral cover, 5 permanent transects were planted at each station by random sampling and then monitored every 2 months. Reef fish abundance data were collected using the Underwater Visual Census method. At each site, oceanographic parameter data was collected as supporting data. The purpose of this study was to determine the abundance, diversity, uniformity, and dominance of reef fish in the Sempu Strait, as well as the relationship between coral cover and the abundance of reef fish. The results of coral reef data collection were processed in CPCe software with the output in the form of cover percentage, while reef fish data were processed using Microsoft Excel and SPSS abundance and its relationship with live coral cover. The results of the abundance of reef fish in the Sempu Strait have increased from previous studies. The abundance of Reef Fish in October 2021 is 0,57 ind/m2. In December 2021, the average value of reef fish abundance in the Sempu Strait is 0,62 ind/m2. in February 2022, the average abundance of fish in the Sempu Strait is 0,57 ind/m2. The correlation test obtained a correlation value of 0,64, so the relationship between coral cover and reef fish was categorized as "strong".
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0522080617 |
| Divisions: | Fakultas Perikanan dan Ilmu Kelautan > Ilmu Kelautan |
| Depositing User: | soegeng Moelyono |
| Date Deposited: | 15 Jan 2024 04:53 |
| Last Modified: | 15 Jan 2024 04:53 |
| URI: | http://repository.ub.ac.id/id/eprint/210109 |
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