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All Journal Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Jurnal Perikanan dan Kelautan Jurnal Ilmu Perairan (Aquatic Science) Jurnal Kelautan : Indonesian Journal of Marine Science and Technology BIOWALLACEA REKAYASA JFMR (Journal of Fisheries and Marine Research) Jurnal Biologi Tropis e-Jurnal Rekayasa dan Teknologi Budidaya Perairan Samakia: Jurnal Ilmu Perikanan Jurnal Pengabdian Magister Pendidikan IPA Aquacultura Indonesiana Journal of Aquaculture and Fish Health Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Abdimas UNWAHAS : Jurnal Pengabdian Masyarakat UNWAHAS Jurnal Abdimas Mandiri JURNAL PERIKANAN TROPIS Asian Journal of Aquatic Sciences PENA AKUATIKA : JURNAL ILMIAH PERIKANAN DAN KELAUTAN Jurnal Laot Ilmu Kelautan Jurnal Abdi Insani Jurnal Aplikasi dan Inovasi Iptek (JASINTEK) Journal of Coastal and Ocean Sciences Jurnal Pengabdian Perikanan Indonesia Journal of Rural and Urban Community Empowerment Jurnal Media Akuakultur Indonesia Jurnal SIAR ILMUWAN TANI Jurnal Airaha Journal of Fish Health Journal of Fish Nutrition Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Jurnal Perikanan dan Kelautan Jurnal Perikanan Jurnal Wicara Desa
Nunik Cokrowati
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Journal : Jurnal Biologi Tropis

 1 
Effect Differences Depth on Chlorophyll Content (Kappaphycus alvarezii) Seaweed Tissue Culture Cultivated in The Waters of Gerupuk Bay Safitri, Iin; Lumbessy, Salnida Yuniarti; Cokrowati, Nunik
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i2.9085

Abstract

Seaweed developed through tissue culture techniques has several advantages, such as high carrageenan content, rapid growth, and resistance to disease. In seaweed cultivation, growth is influenced by photosynthetic pigments such as chlorophyll. Chlorophyll plays an important role in converting sunlight into chemical energy needed for growth. This study aims to analyze the chlorophyll content in Kappaphycus alvarezii cultivated at different depths in Gerupuk Bay waters. This study used an experimental method with a completely randomized design (CRD) consisting of 4 treatments and 3 replications, namely depths of 0 cm (P1), 5 cm (P2), 10 cm (P3), and 15 cm (P4). Results of this study indicate that planting at different depths can increase the absolute weight of K. alvarezii tissue culture ranging from 283 g to 356 g, specific growth rate between 5.72%/day to 5.91%/day, seaweed production ranging from 661 g/m2 to 832 g/m2, chlorophyll content between 5.60 mg/L to 21.89 mg/L, and phycoerythrin content between 0.027 mg/L to 0.19 mg/L. The conclusion is that the cultivation of K. alvarezii tissue culture with floating rafts at different depths can affect growth and yield. Cultivation of K. alvarezii seaweed at a depth of 0 cm using the floating raft method gave the best results, namely increasing absolute weight up to 356 g, specific growth rate up to 5.91%/day, and production up to 832 g/m2, supported by chlorophyll content of 21.89 mg/L and phycoerythrin content of 0.195 mg/L. For optimal production results, it is recommended to use a depth of 0 cm in floating raft seaweed cultivation.
The Effect of Depth on Carrageenan Content in Kappaphycus alvarezii Culture in the Waters of Teluk Gerupuk Aini, Kuratul; Cokrowati, Nunik; Affandi, Rangga Idris
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i2.9090

Abstract

Kappaphycus alvarezii is a red seaweed commonly found in the Indo-Pacific region. Seaweed plays an important role in daily life due to its high nutritional value and its content of hydrocolloid compounds such as carrageenan, agar, and alginate. Carrageenan is categorized into three types: iota, kappa, and lambda. It is widely applied in various sectors including food, pharmaceuticals, and cosmetics. This study aimed to identify the optimal cultivation depth to maximize the carrageenan content in Kappaphycus alvarezii. The research employed an experimental method using different depth treatments over a cultivation period of 45 days. A completely randomized design (CRD) was applied, consisting of four treatments with three replications, resulting in a total of 12 experimental units. The treatments were as follows: P1 (0 cm depth), P2 (25 cm), P3 (50 cm), and P4 (75 cm). The research procedure included the construction of floating rafts, seedling preparation, tying of seedlings, planting, sampling, and harvesting. The best results were observed in treatment P1 (0 cm depth), which yielded the highest carrageenan content at 40%, the greatest absolute weight at 350 grams, and the highest specific growth rate at 5.90% per day.
Seaweed Diversity in Ekas Bay, East Lombok Regency, West Nusa Tenggara Cokrowati, Nunik; Yatin, Nur; Affandi, Rangga Idris; Sumsanto, Muhammad; Yanti, Septiana Dwi
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1.6702

Abstract

Seaweed is a fishery resource that has important economic value and is also an export commodity. Seaweed can be used as food directly. It is also used as raw material for medicine, cosmetics, bioethanol and bioenergy. Seaweed used as food, medicine and cosmetics has been cultivated. The types of seaweed that have been cultivated are still limited to three types, namely Kappaphycus alvarezii, Eucheuma spinosum and Gracilaria sp. Other species that live wild in marine waters have the potential to be utilized and developed through cultivation activities. Ekas Bay is a water body that has seaweed potential and is a location for seaweed cultivation. The purpose of this study was to analyze the types of seaweed that live in Ekas Bay, its antioxidant and chlorophyl. The research method used was purposive sampling method and experiment in the laboratory. The results of this study are the types of seaweed in Ekas Bay found in this study are Boergesenia sp., Turbinaria sp., Glacilaria sp., Hypnea sp., and Halymenea sp. The content of antioxidant and chlorophyl Borgesenia are 5,10% & 5,28 mg/L, Turbinaria sp. 25,94% & 14,42 mg/L, Gracilaria 1,99% & 4,3 mg/L, Hypnea sp 11,24% & 0,44 mg/L. Halymenia 1,79% & 8,83 mg/L and Sargassum 29,61% & 8,10 mg/L.
Seaweed Diversity at Batu Lawang Beach, Sengkol Village, Pujut District, Central Lombok Regency Cokrowati, Nunik; Yatin, Nur; Rahmadani, Thoy Batun Citra; Rusman, Rusman; Ahmad, Ahmad; Sukriadi, Sukriadi; Pebriata, M. Nurdian
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i3.7508

Abstract

Seaweed is a marine and fisheries resource that is currently widely utilized by aquaculture communities and coastal fishermen, because in addition to being easy to maintain, it also provides economic benefits. Batu Lawang beach has the potential for natural grass resources that can be developed. This can be seen from the condition of the water quality in the waters. Some types of seaweed that are cultivated are Kappaphycus alvarezii and Eucheuma spinosum. Batu Lawang beach is an area that has a variety of macroalgae, as well as a fairly large coral reef area. Therefore, this research was carried out to find out the types of macroalgae in the Batu Lawang Beach area. The research was conducted in May-June 2024. This research location is located at Batu Lawang Beach, Gerupuk, Sengkol Village, Pujut District, Central Lombok Regency. This research used purposive sampling method. The results of this study, seaweed that grow naturally are Acanthophora spicifera, Gracilaria verrucosa, Sargassum cristaefolium, Gracilaria coronopifolia, Valoniopsis pachynema, Ulva, K. alvarezii, Halimeda opuntia, Eucheuma spinosum, Dictyopteris dichotoma, Laurencia papillosa, Codium fragile, Padina sp., Turbinaria decurrens, Halimeda tuna, Gracilaria sp. The conclusion is the is 16 types of seaweed that grow wild, with each type containing different antioxidants and chlorophyll-a.
Co-Authors A Rahman Abd Saddam Mujib Abidin, Z Adamiah, Rabiatun Abi Agun Permata Sari agung Suryanto Ahmad Ahmad Aimin, Almu Aini, Kuratul Alis Mukhlis Aluh Nikmatullah ALUH NIKMATULLAH Aluh Nikmatullah Alvia, Sakila Amrina Rossada, Rizky Andre Rachmat Scabra Andriani, Sumiyati Anggraini, Irika Devi Antika, Rendi Aprilia, Nulia Angga Apriliyanti, Fisma Apriliyanti, Fisma Josara Ardyen Saputra, Ardyen Arziahningsih Arziahningsih Asri, Yuliana Astuti, Nur Anggraeni Asya, Beuty Auliah, Jami'atul Ayu Adhita Damayanti Ayu Diamahesa, Wastu Ayuningsih Ria Sapitri Bagus Dwi Hari Setyono Baiq Hilda Astriana Baiq Hilda Astriana Baiq Hilda Astriana Baiq Hilda Astriana, Baiq Hilda Baiq Nadia Dwi Yulihastiana Baiq Sri Ismariani Baiq Suherna Suriani Bambang Ali Akbar Chandrika Eka Larasati, Chandrika Eka Dewi N. Setyowati Dewi Nur’aeni Setyowati Dewi Nur’aeni Setyowati Dewi Nur’aeni Setyowati Dewi Putri Lestari, Dewi Putri Diamahesa, Wastu Ayu Diana Arfiati Dina, Karina Farkha Diniariwisan, Damai Dwi Agustina Dwiyanti, Septiana Edi Sulman Endah Wahyuningsih Erwansyah, Erwansyah Fachrurizal Amri Maulana Fatimah, Syifa Fisma Josara Apriliyanti Fitriani Fitriani Fitriani, Syawalina Hajar, St. Hanan, Nasril Hardawiansyah, Hardawiansyah Hendriawan, Rizki Hery Widijanto Husna, Mardiatul Ihsan Fadilulhak Ilyas, Anita Prihatin Iman, Atifatul Irfani, Febriana Islam, Prasetyo Fajar Izzati, Amaeliya Jalila, Riza Sofia Jamal Basmal, Jamal Jayusri, Jayusri Joko Priyono Joko Priyono Jum'at, Muhammad Junaidi, Muhammad Karina Farkha Dina Kholilah, Nenik Laily Fitriani Mulyani Laily Fitriani Mulyani Laily Fitriani Mulyani lalu Yayan Nigar Luh Putu Mitha Dhila Endraswari Lumbessy, Salnida Yuniarti M. Zohri Maedi Mahdalena Marno, Septhian Maulana, Fachrurizal Amri Muahidah, Nuri Muhammad Faris, Muhammad Muhammad Firdaus Muhammad Junaidi Muhammad Junaidi Muhammad Junaidi Muhammad Marzuki Muhammad Marzuki Muhammad Sumsanto Muhammad Supiandi Muhammad Supriyadin Muhammad Syafii Mulyani, Laily Fitriani Mursal Ghazali Musafir Nanda Diniarti Nanik Tri Purwaningsih Nigar, lalu Yayan Nihla Farida Ningsih, Shinta Wahyu Nisa, Baiq Haerun Nur’aeni setyowati, Dewi Nuri Muahiddah Nurliah Buhari Nurliah Buhari, Nurliah NURUL HIDAYAH Nuryatin Nuryatin, Nuryatin Oktaviani, Tannia Rosali Oktavianti, Velita P Paryono Paryono Paryono . Pebriata, M. Nurdian Permata Sari, Agun Pilo Prasedya, Eka Sunarwidhi Purwaningsih, Nanik Tri Putra, Aryan Perdana Putra, Muhammad Maizi Diploma Putri Dwi Aryanti Putri, Marselia Aisyah Rafif, M. Roid Al Rahmadani, Thoy Batun Citra Rahman, Ibadur Rahmatullah, Sanca Rahmawanti, Sinta Rahmi Sri Ramadhani Ramadhan, Muhammad Arif Rangga Idris Affandi Rhojim Wahyudi Riatulhilal Rifaid Rifaid Rifaid, Rifaid RINA KURNIANINGSIH Rinto Basuki Rio Ary Sudarmawan Riza Sofia Jalila Rosalina Rovi Ratna Sari Rukmini Kusmarwiyah Rukmini Kusmarwiyah Rusdani, Muhammad Masyarul Rusman . Rusman Rusman Rusmin Nuryadin S Sunarpi Sadikin Amir Safira, Devita Safitri, Iin Safitri, Wiwin Sahendra, Satria Ari Sahrul Alim Saptono Waspodo Saputra, Rivaldi Ananda Satria Ari Sahendra Sa’ban, M. Iman Nichfu Sa’ban, Muhammad Iman Nichfu Setyowati, Dewi Nur'aeni Setyowati, Dewi Nur’aeni Setyowati, Dewi Nur’aeni Shofiyatul Lailiyah Sinta Rahmawanti Sitti Hilyana Sitti Hilyana Slamet Suprayogi Soliyanti Sri Andayani Sri Ismariani, Baiq Sugma, Lara Suhdi, Suhdi Suhendri, Salwa Sukartono sukriadi sukriadi Sulman, Edi Sunaryo Sunaryo Supiandi, Muhammad Supiandi, Supiandi Supriadin Supriadin supriadin supriadin Supriyadin, Muhammad Suriani, Baiq Suherna SUWARTI Syahruni, Fajar Tri Oktaviani Utami, Wiyat Zahroh Sepia Velita Oktavianti W Wulandari Waang, Dinda Christasya WAHYU FIRMANSYAH Wahyudi Rahmat Wila Lailatul Hulpa Yanti, Septiana Dwi Yasir Yatin, Nur Yenny Risjani Yonita, Nuansa Azma Yulihastiana, Baiq Nadia Dwi Yuniarlin Hilmi Farnani Yuniarti Lumbessy, Salnida Yuyun Arfah Zaenal Abidin Zaenal Abidin Zohri, M.