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All Journal Biospecies Jurnal Laut Khatulistiwa Jurnal Akuatiklestari Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Mina Sains Journal of Tropical Marine Science Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Forest and Nature
Yuliana, Darma
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Earth & Planetary Sciences Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics Other

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LAJU FILTRASI KERANG HIJAU (Perna viridisLinn. 1758) YANG BERBEDA UKURAN PADA BERBAGAI TINGKAT SALINITAS TERHADAP MIKROALGA Chaetoceros calcitrans (Paulsen. 1968) ningsih, ika rahayu; efendi, eko; Yuliana, Darma
Biospecies Vol. 14 No. 2 (2021): Juli 2021
Publisher : Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/biospecies.v14i2.4194

Abstract

Kerang hijau (Perna viridis) merupakan organisme yang memiliki sifat non selective filter feeder yang merupakan pemakan mikroalga di perairan. Mikroalga dapat tumbuh tidak terkontrol akibat banyaknya kandungan nutrien di perairan, hal ini dapat menyebabkan terjadinya kelimpahan mikroalga. Penelitian ini bertujuan untuk mengkaji laju filtrasi kerang hijau yang berbeda ukuran pada tingkat salinitas yang berbeda terhadap Chaetoceros calcitrans (Paulsen. 1968). Penelitian ini menggunakan metode eksperimental dengan rancangan acak lengkap faktorial dengan  Sembilan perlakuan dan tiga taraf pengulangan. Masing-masing perlakuan mengkombinasikan salinitas 25‰, 30‰, 35‰ dan ukuran 3, 6 and 8 cm. Kepadatan mikroalga yang diberikan pada tiap perlakuan sebanyak 5 x 106 sel/l. Hasil penelitian menunjukan tidak adanya pengaruh ukuran kerang hijau dan salinitas terhadap laju filtrasi kerang hijau yang diberi pakan Chaetoceros calcitrans.
Quantifying Marine Debris Pollution in Mangrove Ecosystems: A Study from Kalangan Hamlet, Lampung, Indonesia Putra, Muhamad Gilang Arindra; Reza, Muhammad; Diantari, Rara; Yuliana, Darma; Julian, David; Damayanti, Inggar; Afrianti, Nur Afni
Forest and Nature Vol. 1 No. 3 (2025): July
Publisher : Green Insight Solutions

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63357/fornature.v1i3.17

Abstract

Mangrove ecosystems are currently facing severe threats due to the accumulation of marine debris, particularly plastic waste. This study aims to quantify the types and weights of marine debris in the mangrove ecosystem of Kalangan Hamlet, Lampung, Indonesia, and analyze their impact on various mangrove species. Data collection was conducted in three zones with different levels of human activity: low, medium, and high. Data on the types and weight of debris were collected using the transect plot method. Correspondence analysis was used to examine the relationship between debris types and the intensity of human activity. The results showed that plastic waste was the most dominant type in terms of both quantity and weight, particularly in areas with moderate to high levels of activity. Over 90% of the waste composition consisted of plastic, weighing over 9,000 g at Stations 2 and 3. Mangrove species of the genus Rhizophora were the most affected, likely due to their complex root structure, which effectively traps waste. Other types of waste, such as fabric, rubber, and glass, were also found in significant quantities and correlated with tourism and community activities. Waste accumulation, particularly plastic, not only alters habitat structure but also hinders mangrove regeneration, which could ultimately reduce ecosystem function and biodiversity. Waste management should align with the area's activity level, with high-activity zones requiring more intensive clean-ups, proper facilities, and regulation enforcement. Community engagement and awareness are crucial in reducing the impacts of marine debris on mangroves. Its temporal scope and sampling frequency limit this study; broader and longer-term research is recommended.
Co-Authors Abdullah Aman Damai Afrianti, Nur Afni Berta Putri Caesario, Rachmad Damayanti, Inggar David Julian Delis, Putu Chintia Delis, Putu Cinthia Deny Sapto Chondro Utomo eko efendi Elisdiana, Yeni Fidyandini, Hilma Putri Herman Yulianto Indra Gumay Yudha Julian, David KARTINI, Nidya Kuswanta Futas Hidayat Muhamad Gilang Arindra Putra Muhammad Reza Ningsih, Ika Rahayu Putra, Muhamad Gilang Arindra Putriani, Rizha Bery Putu Cinthia Delis Qadar Hasani Rahayu, Risma Warni Rahmasari, Ayu Rara Diantari Saleh, Yuliana Susanti, Okotra Susanti, Oktora Susanti,