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All Journal Bumi Lestari ILMU KELAUTAN: Indonesian Journal of Marine Sciences Ulil Albab
Atmaja, Putu Satya Pratama
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Religion Agriculture, Biological Sciences & Forestry Humanities Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Social Sciences

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Journal : Ulil Albab

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Asosiasi Gastropoda dengan Padang Lamun di Pantai Geger, Nusa Dua, Bali Sidik, Awalul Rizal Rohman; Indrawan, Gede Surya; Atmaja, Putu Satya Pratama
ULIL ALBAB : Jurnal Ilmiah Multidisiplin Vol. 3 No. 3: Februari 2024
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/jim.v3i3.2916

Abstract

The Nusa Dua coast is an area that has a diverse ecosystem, ranging from coral reefs, mangrove forests and seagrass beds. Seagrass beds themselves play an important role in marine ecosystems and are used as shelter, foraging areas and spawning grounds for animals that live in seagrass habitats, one of which is gastropods. Gastropods have an important role in aquatic ecosystems, namely helping in the process of mechanical decomposition of organic material through their feeding activity, which will then be used by seagrass plants to carry out photosynthesis to support the growth of seagrass. The aim of this research is to analyze the community structure of Gastropods and to analyze the association between Gastropods and seagrass in the waters of Geger Beach, Nusa Dua, Bali. Samples were taken from 3 stations, station 1 was in a location next to a rocky road, station 2 was in a location where there were many fishing boats, and station 3 was in a location where there were no fishing boats. In the waters of Geger Beach, 5 types of seagrass species were found consisting of Thalassia hemprichii, Enhalus acoroides, Cymodocea rotundata, Halophilla ovalis, and Syringodium isoetifolium. At Geger Beach, 25 families, 76 species and 276 individuals were obtained of gastropods, with a diversity (H') value of 2.10, uniformity (E) of 0.59, and dominance (D) of 0.19. These results indicate that the Gastropod structure at Geger Beach is in a stable condition. The association between Gastropods and seagrass beds is dominated by associations with a very low category, which has an association value of <0.22 for 295 species. This is thought to be due to the low number of species appearing and the existence of competition between the two species at the observation location.
Korelasi Kelimpahan Ikan Herbivora Dengan Tutupan Karang di Pantai Lipah, Karangasem, Bali Afip, Fahmi Anis; Dharma, I Gusti Bagus Sila; Atmaja, Putu Satya Pratama
ULIL ALBAB : Jurnal Ilmiah Multidisiplin Vol. 3 No. 4: Maret 2024
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/jim.v3i4.3265

Abstract

Penelitian ini bertujuan untuk mengetahui nilai korelasi ikan herbivora dan tutupan terumbu karang di pantai Lipah, Desa Bunutan, Karangasem, Bali. Menggunakan metode Underwater Visual Census (UVC) untuk mengidentifikasi dan menghitung kelimpahan ikan herbivora dari empat keluarga ikan herbivora: Acanthuridae, Scaridae, Siganidae, dan Ephippidae. Selain itu, metode Underwater Photo Transect (UPT) digunakan untuk mengukur tutupan terumbu karang di lima titik pengamatan. Hasil penelitian menunjukkan keberadaan 12 spesies ikan herbivora dari 4 famili yang berbeda. Famili Acanthuridae memiliki rata-rata kelimpahan tertinggi, mencapai 79 ind/ha. Tutupan terumbu karang, meskipun bervariasi, secara umum tergolong dalam kriteria "cukup baik" hingga "kurang baik". Analisis data menunjukkan adanya korelasi yang kuat (rxy = 0.79) antara kelimpahan ikan herbivora. Hal ini mengindikasikan hubungan yang erat antara kelimpahan ikan herbivora dan terumbu karang. Ketika tutupan terumbu karang mengalami peningkatan, kelimpahan ikan herbivora juga cenderung meningkat. Sebaliknya, ketika tutupan terumbu karang mengalami penurunan, kelimpahan ikan herbivora cenderung mengalami penurunan serupa. Terdapat korelasi positif antara kelimpahan ikan herbivora dan tutupan terumbu karang, yang berarti ketika terumbu karang meningkat, kelimpahan ikan herbivora juga cenderung meningkat, dan sebaliknya.
Co-Authors Afip, Fahmi Anis Gede Surya Indrawan Gigentika, Soraya Hernawati Hernawati Himawan, Cahya I Gusti Bagus Sila Dharma Khaldun, Muhammad Hafidz Ibnu Laharjana, I Ketut Aditya Krisna Lestariningsih, Wiwid Andriyani Mahardika Rizqi Himawan Murtiyoso, Mahbub Nurdyputra, I Gusti Ngurah Galih Ksatria Mahadhika Putra, I Nyoman Giri Rahman, Ibadur Santika, Lora Sidik, Awalul Rizal Rohman Suardana, A. A. Md. Ananda Putra Van Keulen, Mike WIBISONO, RENDY VIDYA