Relevant bibliographies by topics / Seaweed cultivation

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Seaweed cultivation'

Author: Grafiati
Published: 11 December 2022
Last updated: 29 March 2025

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Journal articles on the topic "Seaweed cultivation"

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Arif, Muhammad, Suriyanti Suriyanti, Zahra Zafira, and Nur Wahyuni. "PEMBERDAYAAN MASYARAKAT MENJAGA TUMBUH KEMBANG ANAK MELALUI PRODUK OLAHAN MAKANAN PADAT GIZI PADA KELOMPOK MITRA DESA PADDINGING KECAMATAN SANROBONE KABUPATEN TAKALAR." Arunika: Jurnal Pengabdian Masyarakat 1, no. 2 (2022): 35–44. http://dx.doi.org/10.53654/ar.v1i2.316.

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: Indonesia is one of the countries that has the world's marine biodiversity, including seaweed or algae. Among the many cultivated seaweeds in Indonesia are Gracilla sp & Kappaphycus cottonii (eucheuma cottonii). Economically, seaweed is a potential commodity to be developed because of the nutritional value it contains. Seaweed can be processed into processed food or snacks such as jelly, there are also those who process Seaweed (Nori) as medicinal and cosmetic products. Seaweed is also used in the pharmaceutical, textile and other industries. The advantages that can be obtained in cultivating seaweed include reducing the number of unemployed, increasing people's income, and increasing local revenue (PAD). Social aspect, the development of Seaweed cultivation business provides benefits for the community around the cultivation location. With this cultivation business, it is hoped that it will be able to meet broad market needs and be able to foster work enthusiasm and entrepreneurial spirit in the local community. From a health perspective, consuming seaweed can help maintain or lose weight, help speed up wound healing, strengthen bones and teeth, improve the digestive system, increase energy, good for people with diabetes and cholesterol, avoid swelling of the thyroid gland, fight disease, and can slow the spread of cancer cells.
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S.S, Sumayya, Sreelekshmi S.G, and Murugan K. "CULTIVATION AND ECONOMICAL PERSPECTIVES OF GRACILLARIA: MARINE SEAWEED." Kongunadu Research Journal 4, no. 2 (2017): 73–79. http://dx.doi.org/10.26524/krj206.

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For decades, seaweed has been of biological, industrial, and pharmaceutical importance. Because of their nutraceutical potential, seaweed has been used as a food throughout Asia. Traditional Chinese medicine used aqueous hot extracts of certain seaweeds in the treatment of cancer. Further, the Japanese and Chinesecultures have used seaweeds to treat goiter and other glandular problems since 300 BC. The Romans used seaweeds in the treatment of wounds, burns, and rashes. The Celts noted that ordinary seaweed contracted as it dried and then expanded with moisture. In Scotland during the 18th century, physicians used dried seaweed stem to successfully drain abdominal wall abscesses. They also inserted seaweed into the cervix in an attempt to treat dysmenorrhea. Many reports outline the use of seaweed to induce abortion. Seaweed was employed intravaginally for ripening of the cervix and was used rectally for strictures. In this juncture, culture and therapeutic potential of Gracilaria was reviewed. Gracilaria is a genus of red algae notable for its economic importance as an agarophyte, as well as its use as a food for humans and various species of shellfish. Various species within the genus are cultivated among Asia, South America, Africa and Oceania. Gracilaria is used as a food in Japanese, Hawaiian, and Filipino cuisine. In Japanese cuisine, it is called ogonori or ogo. In thePhilippines, it is called gulaman and used to make gelatin. In Jamaica, it is known as Irish moss. The moisture content is 12% and protein is 8%. The species are used by local people as salad, preparation of various curries and industrially many by products are synthesized from this sea weed. Medicinally as microbicidal, antiinflammatory, antimetastatic and immuno modulatory potential.
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Ganesan, Meenakshisundaram, Nitin Trivedi, Vishal Gupta, S. Venu Madhav, Chennur Radhakrishna Reddy, and Ira A. Levine. "Seaweed resources in India – current status of diversity and cultivation: prospects and challenges." Botanica Marina 62, no. 5 (2019): 463–82. http://dx.doi.org/10.1515/bot-2018-0056.

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Abstract Seaweeds are an integral part of coastal ecosystems and offer invaluable ecosystem services supporting the life of many marine forms. The economic value of seaweeds significantly contributes to the sustainable development of rural coastal regions. Seaweeds are consumed as food in some Asian countries, but their utilization for production of phycocolloids is widespread across the globe, with an estimated value of more than one billion US$. In India, seaweeds have been utilized exclusively for the production of phycocolloids but recently they are used for the production of plant growth stimulants for agricultural applications. The domestic agar and alginate industry totally depends on the supplies from natural seaweed beds with some occasional imports. The recent success achieved in both upstream and downstream technologies in production and processing of seaweeds has boosted the prospects for commercialization of seaweed resources in the country. The present article briefly appraises the current status of Indian seaweed resources and their utilization, as well as developments in seaweed farming technologies, the status of seaweed industry and recent efforts to transform seaweed farming into a social enterprise. It also highlights the challenges encountered for mainstreaming these resources so as to evolve into a marine industry.
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Tanaka, Kouki, Masao Ohno, and Danilo B. Largo. "An update on the seaweed resources of Japan." Botanica Marina 63, no. 1 (2020): 105–17. http://dx.doi.org/10.1515/bot-2018-0100.

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AbstractNatural seaweed beds, which play an important role for coastal ecosystems and marine fisheries, have been changing drastically in Japan. Interventions, such as decreasing the over-grazing by sea urchins, are being undertaken to maintain natural seaweed beds. Japan has at least 15 seaweed genera of economic importance utilized either directly as human food, as ingredients in food, or as raw materials for extraction of chemical compounds for various applications. Most species are produced through various cultivation methods that usually start in a land-based facility and are completed when seaweeds are transferred for open-sea cultivation. Cultivation, as well as harvesting, from natural populations, has sustained the Japanese seaweed industry for many years, but recently a downfall in seaweed production has been experienced in some areas for certain species due to warming oceans. Efforts to improve production have led to the development of forced cultivation techniques to reduce the cultivation period for Saccharina japonica while hybridization of different morphological forms of Undaria pinnatifida has resulted in the production of so-called “southern” and “northern types” that have desirable shapes for harvesting and processing. The future of the seaweed industry in Japan is geared towards producing high-grade products from seaweeds grown in land-based tanks using deep-ocean water.
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Kasim, Ma'ruf, LaBaco Sudia, Nurdiana Nurdiana, and Wardha Jalil. "Implementasi Horisontal Net Untuk Meningkatkan Peran Perempuan Dalam Pengelolaan Kebun Bibit Rumput Laut." Jurnal Gema Ngabdi 6, no. 3 (2024): 287–95. https://doi.org/10.29303/jgn.v6i3.531.

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Seaweed cultivation currently uses the longline method. In practice, the longline method demands significant effort, leading to a greater male dominance in the cultivation process. This community service activity offers the most effective approach to enhancing the involvement of women in seaweed cultivation. We carried out this community service activity in one of the cultivation areas in North Buton Regency, Southeast Sulawesi Province. Seaweed farmers received training and assistance to implement horizontal nets. Twenty female seaweed farmers and 20 male farmers participated in the training. During the training activities, women play a significant role by performing practical tasks such as creating, cultivating, and maintaining horizontal net tools used in seaweed cultivation. At the field implementation level, women play a greater role in operating and maintaining horizontal nets. This community service activity has instilled new hope in expanding the availability of seaweed seed gardens and enhancing the role of women, thereby potentially increasing the income of female seaweed farmers.
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Arias-Echeverri, Juan Pablo, Paula Andrea Zapata-Ramírez, Margarita Ramírez-Carmona, Leidy Rendón-Castrillón, and Carlos Ocampo-López. "Present and Future of Seaweed Cultivation and Its Applications in Colombia." Journal of Marine Science and Engineering 10, no. 2 (2022): 243. http://dx.doi.org/10.3390/jmse10020243.

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Colombia has a diverse range of marine ecosystems in the coastal and insular areas of the Caribbean Sea and the Pacific Ocean. Seaweed research has focused mainly on the identification and taxonomic distribution of 628 species identified so far, mainly in the Caribbean Sea. Among the most widely cultivated genera of seaweeds in open-sea pilot systems in Colombia are Hydropuntia, Gracilaria, Hypnea, Kappaphycus, and Eucheuma. These genera have shown low yields as a consequence of high tissue fragility, epiphytism, sedimentation, and nitrogen deficiency. In addition, the evaluation of the biological activity of selected seaweed compounds has advanced considerably, focusing on their composition and their use for direct consumption by humans and animals. Despite the diversity of seaweeds, as well as certain technical and scientific advances, Colombia is still lagging behind other countries in seaweed exploitation, both in Latin America and worldwide. This current status raises the need to increase research, technological (agro-tech) appropriation, and the adoption of effective public policies that will boost algal businesses. In addition, seaweed cultivation could support the current blue economy transition in Colombia, which could eventually allow the country to enter the global seaweed market.
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Israel, Alvaro, Alexander Golberg, and Amir Neori. "The seaweed resources of Israel in the Eastern Mediterranean Sea." Botanica Marina 63, no. 1 (2020): 85–95. http://dx.doi.org/10.1515/bot-2019-0048.

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AbstractIn spite of the natural harsh marine environments and continuous global change stressors affecting the Levant basin, the Israeli marine flora in the Eastern Mediterranean Sea is quite diverse, with about 300 recognized species. Such high seaweed biodiversity for a small maritime area is remarkable compared to the ca. 1200 species described for the entire Eastern Mediterranean Sea. Since about the year 1890, the Levant basin has been hosting over 115 seaweeds species that migrated from the Indo-Pacific through the Suez Canal. Indeed, approximately 16% of the marine flora is regarded as invasive or exotic to the Israeli shores, in a process that constantly reshapes seaweed populations and their biodiversity. In spite of significant contributions by Israeli scientists to the general biology and technologies for seaweed cultivation worldwide, Israel has little historical and cultural tradition of commercial seaweed cultivation, or use. At present, only two commercial companies are engaged in land-based seaweed cultivation (Ulva sp. and Gracilaria sp.) with a number of products marketed locally and abroad. Recently, offshore cultivation and biorefinery approaches have been explored, but not yet commercialized.
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Segbefia, Alexander Yao, Victor Rex Barnes, Lawrence Atsu Akpalu, and Moses Mensah. "Environmental Location Assessment for Seaweed Cultivation in Ghana." International Journal of Applied Geospatial Research 9, no. 1 (2018): 51–64. http://dx.doi.org/10.4018/ijagr.2018010104.

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This study was designed to select potential areas for the cultivation of seaweeds on the Ghanaian coastline. The challenge of selecting suitable sites for the cultivation of seaweed along the coast was investigated, using spatial multi-criteria approach in GIS. Environmental and physical parameters based on spatial multi-criteria decision for the best sites suitable for seaweed cultivation were used. The parameters used included Sea-depth (1-10)m, (11-20)m, (21-30)m and (31-40)m, sea-surface temperature (24-26) degree Celsius, proximity to settlements (0-8) kilometers and sheltered coves (areas sheltered from strong wind and waves) as variables for the various models. The study identified twelve suitable sites along the coast of Ghana for seaweed cultivation. Five of the selected sites were ground-truthed for model validation. All five validation sites have agreed to the GIS models indicating that GIS is the most appropriate tool to use for selecting most suitable environment for seaweed cultivation especially when dealing with a complex coastal environment like Ghana's coastline.
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Laapo, Alimudin, Dafina Howara, Saharia Kassa, Hardianti Sultan, and Abd Rahim. "A Multidimensional Approach to Assessing the Leverage Factors of the Sustainability of Seaweed Farming in Coastal Area of Parigi Moutong District, Indonesia." Journal of Aquaculture and Fish Health 10, no. 3 (2021): 271. http://dx.doi.org/10.20473/jafh.v10i3.24281.

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The sustainability of seaweed cultivation is influenced by multidimensional factors such as the quality of the aquatic environment, cultivation technology, economic contribution to cultivators, social conditions of the community, and government institutional support. This paper aims to reveal the leveraging factors for the sustainability of seaweed cultivation in the coastal area of Parigi Moutong Regency by using a multidimensional scaling approach and the RAPFISH application. The results showed that the sustainability of seaweed cultivation in the coastal area of Parigi Moutong Regency was in the less sustainable category. Leveraging factors that play an important role in the sustainability of seaweed farming are employment at the cultivator level and the feasibility of cultivation as a good factor, while the low quality of seeds of seaweed, socio-cultural capital, and fluctuating commodities prices are categorized as bad factors.
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Gao, Guang, Lin Gao, Meijia Jiang, Ao Jian, and Linwen He. "The potential of seaweed cultivation to achieve carbon neutrality and mitigate deoxygenation and eutrophication." Environmental Research Letters 17, no. 1 (2021): 014018. http://dx.doi.org/10.1088/1748-9326/ac3fd9.

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Abstract Carbon neutrality has been proposed due to the increasing concerns about the consequences of rising atmospheric CO2. Previous studies overlooked the role of lost particle organic carbon (POC) and excreted dissolved organic carbon (DOC) from seaweed cultivation in carbon sequestration, that is to say, long term carbon storage in the oceanic sediments and in the water. This study assessed the potential of seaweed cultivation to achieve carbon neutrality of China by 2060 using a new method that included lost POC and excreted DOC. Based on the seaweed production in the years 2015–2019 in China, harvested seaweed removed 605 830 tonnes of carbon, 70 615 tonnes of nitrogen and 8 515 tonnes of phosphorus from seawaters annually; farmed seaweed sequestrated 344 128 tonnes of carbon and generated 2533 221 tonnes of oxygen annually. Among the seven farmed seaweeds, Gracilariopsis lemaneiformis has the highest capacities for carbon removal (9.58 tonnes ha−1 yr−1) and sequestration (5.44 tonnes ha−1 yr−1) and thus has the smallest cultivation area required to sequestrate 2.5 Gt CO2 that is annually required to achieve China’s carbon neutrality goal by 2060. The O2 generated by seaweed cultivation could increase dissolved oxygen in seawaters (0–3 m deep) by 21% daily with gas exchange excluded, which could effectively counteract deoxygenation in seawaters. Gracilariopsis lemaneiformis also has the highest N removal capacity while Saccharina japonica has the highest P removal capacity. To completely absorb the N and P released from the fish mariculture, a production level or a cultivation area two and three times larger (assuming productivity remains unchanged) would be required. This study indicates that seaweed cultivation could play an important role in achieving carbon neutrality and mitigating deoxygenation and eutrophication in seawaters. Cultivation cost could be offset to some extent by increased sales of the harvest parts of the seaweed for food and biofuel.
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Dissertations / Theses on the topic "Seaweed cultivation"

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Sanderson, John Craig. "Reducing the environmental impact of seacage fish farming through cultivation of seaweed." Thesis, Open University, 2006. https://pure.uhi.ac.uk/portal/en/studentthesis/reducing-the-environmental-impact-of-seacage-fish-farming-through-cultivation-of-seaweed(efead239-cc7b-4f86-9d96-7ab0f66b173d).html.

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Cultivation of Laminaria saccharina (Linnaeus) Lamouroux and Palmaria palmata (Linnaeus) Kuntze was trialled at three fish farm sites in north-west Scotland. Results show that seasonal yields of L. saccharina were enhanced by 50 % and P. palmata by 63 % when cultured adjacent to fish farm cages compared to environmentally similar sites away from the farms. Yields of P. palmata were further enhanced under conditions of optimal water movement. Ammonium concentrations in the seawater 0 to 50m away from the fish cages were found to be 2 - 3 μM greater than ambient. Enhanced concentrations of ammonium could be detected 200 to 300 m from the cages although the distribution is heavily influenced by local hydrography. Nitrogen content of L. saccharina and P. palmata cultured adjacent to the salmon cages in summer was higher than in seaweeds cultured at reference sites away from fish cages. Stable nitrogen isotope analysis indicates that the nitrogen in seaweeds grown next to salmon cages is derived from the fish farm and farm derived nitrogen is likely to be widely dispersed in the lochs where cages are situated. A preliminary economic analysis showed that growing seaweeds commercially, in particular P. palmata, may be at worst cost neutral, with profitability increasing as a result of enhanced production through increased nutrient availability adjacent to fish farms. A one hectare seaweed farm producing 600 tonnes wet weight over two years (300 tonnes per year) of P. palmata could potentially absorb up to 30 % of nutrients generated from a 500 tonnes salmon production unit. As farm origin nitrogen is evident in biota at distances of up to one kilometre away from the cages, cultured macroalgae would not have to be sited close to cages to result in net nitrogen removal facilitating the siting of algal farms in areas more suited for individual species requirements while still maintaining bioremediation benefits.
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Martins, Aline Paternostro. "Avaliação do potencial biotecnológico de macroalgas marinhas." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/46/46131/tde-06062013-141931/.

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Neste trabalho, foi estudado o potencial biotecnológico, com ênfase na produção de biodiesel, de 25 espécies de macroalgas marinhas pertencentes às divisões Rhodophyta, Chlorophyta e Heterokontophyta coletadas no litoral brasileiro, avaliando-se a sua composição bioquímica e a sua taxa de fotossíntese. Também foram realizados estudos com 6 espécies de macroalgas coletadas na Baía do Almirantado, na Península Antártica, para comparar os resultados apresentados por esses organismos, que habitam um ambiente de condições extremas e adversas. Para a análise bioquímica, foram quantificados os pigmentos (clorofila a, para todos os grupos de macroalgas, e ficobiliproteínas -aloficocianina, ficocianina e ficoeritrina-, para as algas vermelhas), as proteínas e carboidratos solúveis totais e os lipídeos totais e ácidos graxos. As espécies Dictyota menstrualis e Ulva lactuca apresentaram os maiores valores de fotossíntese máxima. Foram observadas diferenças no conteúdo de clorofila a entre as espécies de macroalgas estudadas, sendo que os valores variaram de 0,20 ± 0,01 mg/g massa seca (Gigartina skottsbergii) a 6,82 ± 0,46 mg/g massa seca (Spatoglossum schroederi). Também houve grande variação no conteúdo de lipídeos, carboidratos e proteínas, sendo que os maiores valores foram encontrados em D. menstrualis (98,8 + 4,9 mg/g massa seca de lipídeos), Gracilaria mammillaris, Laurencia dendroidea e Plocamium cartilagineum (742,0 ± 31,9, 675,3 ± 11,0 e 660,2 ± 27,2 mg/g massa seca de carboidratos, respectivamente) e Palmaria decipiens e Aglaothamnion uruguayense (21,7 ± 1,7 e 18,0 ± 0,4 mg/g massa seca de proteínas, respectivamente). Houve grande variação na concentração e no perfil de ácidos graxos das espécies estudadas, sendo que D. menstrualis e S. schroederi foram as espécies que apresentaram os maiores valores. Além disso, D. menstrualis exibiu a maior proporção de ácidos graxos monoinsaturados. A partir dos resultados obtidos com as algas coletadas em campo, concluímos que D. menstrualis foi a espécie que apresentou as melhores características para ser utilizada como fonte para produção de biodiesel, devido a sua alta taxa fotossintetizante, alto teor de lipídeos e ácidos graxos e alto teor de ácidos graxos monoinsaturados. Dessa forma, D. menstrualis foi utilizada na segunda etapa do trabalho, sendo estabelecido o seu cultivo em laboratório, com uma taxa de crescimento (TC) de 11,1 % d-1. Foram realizados experimentos para avaliar os efeitos do aumento da concentração de dióxido de carbono (CO2), em condições de limitação e saturação de nitrogênio (na forma de nitrato, NO3-), sobre a TC, a fotossíntese, a atividade das enzimas nitrato redutase (NR), Anidrase Carbonica (AC) e Rubisco e sobre a composição bioquímica de D. menstrualis cultivada em biorreatores e sobre a captação do CO2 por D. menstrualis cultivada em laboratório. A TC, o conteúdo de proteínas e de N total no tecido de D. menstrualis foram maiores nos tratamentos contendo NO3-, independente da adição de CO2. Entretanto, houve um aumento nos valores de fotossíntese máxima, na atividade da Rubisco e NR, e no teor de carboidratos e lipídeos totais quando D. menstrualis foi cultivada em meio com adição de CO2, com saturação de NO3-. Houve pouca variação na atividade da AC entre os diferentes tratamentos testados. O perfil de ácidos graxos de D. menstrualis cultivada nos biorreatores foi caracterizado por um alto conteúdo de ácidos graxos poliinsaturados, com destaque para os omegas-3. Não houve diferença significativa na taxa de remoção de CO2 entre os tratamentos com e sem adição NO3-. A remoção de CO2 nos meios com e sem adição de CO2 foi alta, variando de 71,5% a 34,8%, respectivamente. Os resultados evidenciam que quando essa espécie foi cultivada em biorreatores, houve um aumento no seu teor de ácidos graxos poliinsaturados e &#969;-3, o que a torna mais interessante para ser utilizada como nutracêutico do que como matéria-prima para a produção de biodiesel. Apesar disso, a sua aplicação como fonte de biodiesel não deve ser desconsiderada, uma vez que alterações nas condições de cultivo acarretam em modificações no perfil de ácidos graxos. Com base nos resultados obtidos, as perspectivas para a produção de biodiesel a partir de macroalgas marinhas deverão contemplar estudos para encontrar as melhores condições de cultivo para que ocorra o aumento na biossíntese de ácidos graxos monoinsaturados.<br>The Biotehcnological potential, with biodiesel producing emphasis, on 25 species of marine benthic algae from the phylum Rhodophyta, Chlorophyta and Heterokontophyta collected along the Brazilian coast, were evaluated assessing their biochemical composition and their photosynthetic rate. Studies have also been performed with 6 seaweed species collected in Admiralty Bay, Antarctic Peninsula, to compare the results presented by these organisms inhabiting an environment of extreme and adverse conditions. For biochemical analysis, pigments (chlorophyll a, for all groups of macroalgae, and phycobiliproteins, allophycocyanin, phycocyanin and phycoerythrin, for the red algae), total soluble protein, total soluble carbohydrates and total lipids and fatty acids were quantified. The species Dictyota menstrualis and Ulva lactuca showed the highest values of maximum photosynthesis. There were differences in chlorophyll a content between the seaweeds studied, and the values ranged from 0.20 ± 0.01 mg / g dry mass (Gigartina skottsbergii) to 6.82 ± 0.46 mg / g dry weight (Spatoglossum schroederi). There was also wide variation in the content of lipids, carbohydrates and proteins, and the highest values were found in the species Dictyota menstrualis (98.8 ± 4.9 mg / g dry weight of lipids), Gracilaria mammillaris, Laurencia dendroidea and Plocamium cartilagineum (742, O ± 31.9, 675.3 ± 11.0 and 660.2 ± 27.2 mg / g dry weight of carbohydrates, respectively) and Palmaria decipiens and Aglaothamnion uruguayense (21.7 ± 1.7 and 18.0 ± 0, 4 mg / g dry weight of proteins, respectively). There was a wide variation on fatty acids contents and profile of the species studied; D. menstrualis and Spatoglossum schroederi showed the highest lipids values. In addition, D. menstrualis exhibited the highest proportion of monounsaturated fatty acids. From the results obtained with algae collected in the field, D. menstrualis is the species with the best characteristics to be used as a source for biodiesel production due to their high photosynthetic rate, high content of lipids and fatty acids and a high content of monounsaturated fatty acids. Thus, D. menstrualis was used in the second stage of this study, being established it\'s cultivation in the laboratory, with a growth rate (GR) of 11.1% d-1. Experiments to evaluate the effect of increasing carbon dioxide (CO2) concentration, under nitrogen (NO3-) limiting and saturation conditions, on the GR, photosynthesis, the activity of nitrate reductase (NR), carbonic anhydrase (CA) and Rubisco and on the biochemical composition of D. menstrualis grown in bioreactors and on the CO2 capture by D. menstrualis grown in the laboratory were performed. The GR, protein content and N content in the tissue of D. menstrualis were higher in treatments containing NO3-, regardless of the addition of CO2. However, there was an increase in the values of maximum photosynthesis, of Rubisco and NR activity, and of total soluble carbohydrates and total lipids when D. menstrualis was grown in medium with addition of CO2, with NO3- saturation. There was little variation in the AC activity among different treatments. The fatty acid profile of D. menstrualis cultivated in bioreactors was characterized by a high content of polyunsaturated fatty acids, especially the omegas-3. There was no significant difference in the rate of CO2 removal between treatments with and without NO3-. CO2 removal in medium with and without addition of CO2 was high, ranging from 71.5% to 34.8%, respectively. The results show that when this species was cultivated in bioreactors, there was an increase in its content of polyunsaturated fatty acids and &#969;-3, which makes it interesting for use as a nutraceutical than as raw material for biodiesel production. Nevertheless, its application as a source of biodiesel can not be disregarded, since changes in culture conditions lead to changes in fatty acid profile. Based on these results, the prospects for the production of biodiesel from marine macroalgae should include studies to find the best growing conditions to occur the increase in the monounsaturated fatty acids biosynthesis.
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Kumar, Vivek. "Effect of different ionic profiles of inland saline water on growth and agar characteristics of gracilaria cliftonii (Withell, Miller & Kraft, 1994)." Thesis, Curtin University, 2008. http://hdl.handle.net/20.500.11937/941.

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Salinity caused by the mobilisation of geologically stored salt through rising water tables is a major problem in Western Australia. Damage is occurring to aquatic and terrestrial ecosystems, affecting the profitability of agricultural land. However, the resultant inland saline water-bodies with an ionic composition similar to ocean water have the potential to be used for seaweed cultivation. Seaweed cultivation can mitigate the cost of land rehabilitation by making profitable use of saline wastewaters.A series of laboratory trials were conducted to identify the conditions necessary for successful Gracilaria cliftonii cultivation in inland saline water (ISW) and modify the agar extraction process for G. cliftonii to optimise agar yield and properties. This was accomplished by culturing G. cliftonii with different nutrients in ISW, with or without K[superscript]+ fortification and investigating the respective effects on chemical composition, physicochemical properties and agar characteristics. To identify the process required for optimum agar yield and quality from G. cliftonii, the effect of modifying some extraction process variables such as alkali concentration, soaking time and temperature, heating time, seaweed-water ratio, extraction time and temperature was investigated.These trials demonstrated that with the selection of appropriate nutrient media and culture conditions G. cliftonii can be successfully grown in ISW. To achieve higher growth rates of G. cliftonii, it is necessary to fortify ISW with K[superscript]+. The addition of nutrients to ISW and different ionic profiles of ISW had significant positive effects on chemical composition, physicochemical properties and agar characteristics. Agar yield, gel strength, melting point, gelling temperature and sulphate content were found to be a function of G. cliftonii life stages. Modification of alkali treatment with variable alkali concentration (0.3 to 5 %), soaking time and heating time had detrimental effect on agar yield resulting in significant agar loss but improved agar quality from G. cliftonii. However, agar quality can be improved by modifying extraction process variables like soaking time and temperature, seaweed to water ratio, extraction time and temperature without agar loss.
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Njobeni, Asanda. "Experimental cultivation of the red seaweed, Gracilaria gracilis (Rhodophyta) in land-based tank culture systems on abalone farms in the Western Cape, South Africa." Master's thesis, University of Cape Town, 2006. http://hdl.handle.net/11427/6150.

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Includes bibliographical references (leaves 91-111).<br>The feasibility of growing red seaweed, Gracilaria gracilis (Gigartinales, Rhodophyta) in land-based culture systems was investigated in two Western Cape abalone farms i.e. Jacobsbaai Sea Products (JSP) and Irvin & Johnson (I&J) and large size culture tanks (I&J). All the tanks were stocked with at 2 kg m⁻² supplied with unfiltered seawater (24 and 4 volume exchanges d⁻¹) JSP and I&J, respectively. This study also tested the efficiency of G. gracilis as a biofiltering species as well as investigating the effectivenss and influence of nutrient-enriched seawater i.e. turbot and abalone effluent (JSP) and fertilized seawater and abalone effluent (I&J) on the growht of Gracilaria.
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Berger, Manon. "Coastal ocean carbon cycle, and the potential role of macroalgae in removing atmospheric carbon dioxide." Electronic Thesis or Diss., Université Paris sciences et lettres, 2024. http://www.theses.fr/2024UPSLE013.

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Les accords climatiques internationaux visent à réduire les émissions de CO₂, mais il existe un écart entre les trajectoires actuelles et les réductions nécessaires pour limiter le réchauffement à 2°C. Les technologies d’élimination du dioxyde de carbone (CDR) sont essentielles pour compenser les émissions résiduelles, notamment dans les secteurs difficiles à décarboner. L’océan, avec sa grande capacité d’absorption du CO₂, offre une opportunité clé pour la CDR marine (mCDR), notamment à travers la culture de macroalgues dans les zones côtières comme les Zones Économiques Exclusives (ZEE). Les écosystèmes d’algues assurent une productivité élevée et capturent le carbone sans qu’il soit nécessaire d’utiliser des terres cultivables. En outre, les pratiques d’algoculture sont bien établies et font de la culture d’algues une stratégie prometteuse pour la réduction des émissions de gaz à effet de serre. Toutefois, la capture du carbone à grande échelle se heurte à des difficultés et à des incertitudes en ce qui concerne le piégeage du carbone à long terme et les incidences sur les écosystèmes. Cette thèse explore la culture des macroalgues comme stratégie CDR en utilisant le modèle biogéochimique océanique NEMO-PISCES. Les simulations montrent que le potentiel CDR des macroalgues est limité par des processus dynamiques et géochimiques, notamment une équilibration partielle du carbone air-mer. Les contraintes biologiques, telles que la compétition pour les nutriments avec le phytoplancton, réduisent encore ce potentiel. En prenant en compte l’utilisation du fer par les macroalgues, le potentiel d’afforestation est encore réduit, ce qui diminue la production de phytoplancton et les projections de CDR. Nous démontrons que l’affinité et la demande en nutriments des macroalgues influencent de manière significative ces estimations. Alors que la CDR sera cruciale pour l’atténuation climatique future, nous avons évalué l’impact de l’augmentation du CO₂ atmosphérique et du changement climatique sur le potentiel CDR des macroalgues. Les résultats montrent une augmentation potentielle aux hautes latitudes, due à une stratification accrue et des concentrations élevées de CO₂, tandis que d’autres régions pourraient connaître une baisse. Ces résultats soulignent l’importance d’intégrer plus précisément la physiologie des macroalgues et de plus nombreux processus biogéochimiques dans les évaluations de la CDR des macroalgues<br>International climate agreements aim to reduce CO₂ emissions, but a gap remains between current trajectories and the reductions needed to limit warming to 2°C. Carbon dioxide removal (CDR) technologies are essential to offset residual emissions, particularly from hard-to-decarbonize sectors. The ocean’s vast capacity to absorb CO₂ offers a key opportunity for marine CDR (mCDR), especially through seaweed cultivation in coastal regions like Exclusive Economic Zones (EEZs). Seaweed farming is promising due to its high productivity and established agricultural practices, but scaling to climate-relevant levels poses challenges related to long-term carbon sequestration and ecosystem impacts. This PhD explores seaweed cultivation as a CDR strategy using the NEMO-PISCES ocean biogeochemical model. Simulations show that seaweed CDR potential is limited by dynamical and geochemical processes, with only partial air-sea carbon equilibration. Biological constraints, including nutrient competition with phytoplankton, further reduce potential. Additionally, accounting for seaweed’s iron utilization lowers afforestation potential, suppresses phytoplankton production, and reduces CDR estimates. We show that nutrient affinity and demand significantly impact these projections. As CDR will be critical for future climate mitigation, we assess the effects of rising atmospheric CO₂ and climate change on seaweed CDR. Results indicate potential increases at high latitudes due to enhanced stratification and CO₂ concentrations, while other regions maysee declines. These findings highlight the importance of accurately representing seaweed physiology and broader biogeochemical processes in future CDR assessments
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Jensen, Mari N. "Cultivating Edible Seaweed in Hawaii: New technique helps local farmers." College of Agriculture, University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/295866.

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Bui, Ha Thi Thu. "Technical Feasibility of Cultivating Local Seaweed Species in Inland Saline Water of Western Australia." Thesis, Curtin University, 2018. http://hdl.handle.net/20.500.11937/70550.

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This research investigated the technical feasibility of cultivating local seaweed species from Perth region in potassium-fortified inland saline waters (ISW). Different levels of potassium fortification into the ISW were essential for their culture and out of six seaweed species studied, Ulva lactuca, Lomentaria catenata and two Sargassum spp. could successfully be cultured in 33 to 100% potassium-fortified ISW. Seasonality, nutrient enrichments, pH and temperature were able to influence different seaweed species to different degrees.
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França, Lucas Vagueiro de. "Macroalgae as feedstock for cultivation of marine bacteria." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/14921.

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Mestrado em Biotecnologia - Biotecnologia Industrial e Ambiental<br>Alginate, laminarin and mannitol amount up to 60% of dry weight in brown macroalgae. The presence of alginate and laminarin-degrading enzymes and mannitol metabolic machinery have been confirmed by Matís, a partner in European BlueGenics project. Thus, in a biorefinery perspective, R. marinus can potentially perform the saccharification and fermentation of brown macroalgae carbohydrates to yield commercial valuable biocompounds, as thermostable enzymes and glycosidic carotenoids. Rhodothermus marinus is a moderate thermophilic (65ºC) and slight halophilic (1.0% NaCl) marine bacterium. Therefore, one of the objectives of this project was to decrease the NaCl concentration in the fermentation medium, since chloride leads to a lower equipment lifetime due to stainless steel corrosion of bioreactors. The main objective of this work was the study of the bacterium R. marinus pattern of growth when cultivated in the main brown macroalgal carbohydrates. This work was performed with five R. marinus strains, two of which were successfully acclimatized to cultivation in Medium 166, cryopreserved in glycerol and recultivated in liquid media, being subject of study in the assays with different carbon and sodium sources in shake flask. The growth studies with different carbon sources suggested that (i) strain 5 presented higher glucose consumption and growth, even though none of the strains consumed all the glucose available in the media; (ii) although none of strains consumed mannitol, strain 5 seemed to be more robust to its presence; and (iii) the growth differences between the controls and the assays with alginate and pretreated alginate were not significant enough to infer if any alginate consumption occurred. It was tested a partial and total substitution of NaCl by Na2SO4. The process was not successful, since Na2SO4 seem to represent a stress factor to both R. marinus strains. Interestingly, the strain 5, when cultivated in Medium 166 containing only a half of NaCl standard concentration, presented a similar growth pattern to control. In the operational conditions imposed in shake flask cultivations containing two tested brown macroalgae (orginial and pretreated) as feedstock for growth, mannitol was not consumed. It was not possible to monitor the alginate and laminarin saccharification and fermentation. Although, the results showed that brown macroalgae are a potential feedstock under the biorefinery concept, since some R. marinus growth was observed. The more promising result to BlueGenics project was obtained from shake flask cultivations of strain 5 in Medium 166 with 0.500% NaCl and 10.0 g.L-1 glucose, since the growth with low chloride content determinates the feasibility of the scale-up of the process to bioreactor . Because of that, the assay was validated in 3L controlled bioreactor. The process presented a μmax of 0.208 h-1, a maximum biomass concentration of 8.75 gX.L-1, a volumetric biomass production rate of 0.295 g.L-1.h-1 and a volumetric glucose uptake rate of 0.293 g.L-1.h-1. Some feeding strategies were tested but further assays have to be performed in order to optimize the bioprocess.
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Sanderson, JC. "Reducing the environmental impact of seacage fish farming through cultivation of seaweed." Thesis, 2006. https://eprints.utas.edu.au/11922/2/JCSPhdBioremediation2006.pdf.

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Cultivation of Laminaria saccharina (Linnaeus) Lamouroux and Palmaria palmata (Linnaeus) Kuntze was trialled at three fish farm sites in north-west Scotland. Results show that seasonal yields of L. saccharina were enhanced by 50 % and P. palmata by 63 % when cultured adjacent to fish farm cages compared to environmentally similar sites away from the farms. Yields of P. palmata were further enhanced under conditions of optimal water movement. Ammonium concentrations in the seawater 0 to 50m away from the fish cages were found to be 2 - 3 μM greater than ambient. Enhanced concentrations of ammonium could be detected 200 to 300 m from the cages although the distribution is heavilyinfluenced by local hydrography. Nitrogen content of L. saccharina and P. palmata cultured adjacent to the salmon cages in summer was higher than in seaweeds cultured at reference sites away from fish cages. Stable nitrogen isotope analysis indicates that the nitrogen in seaweeds grown next to salmon cages is derived from the fish farm and farm derived nitrogen is likely to be widely dispersed in the lochs where cages are situated. A preliminary economic analysis showed that growing seaweeds commercially, in particular P. palmata, may be at worst cost neutral, with profitability increasing as a result of enhanced production through increased nutrient availability adjacent to fish farms. A one hectare seaweed farm producing 600 tonnes wet weight over two years (300 tonnes per year) of P. palmata could potentially absorb up to 30 % of nutrients generated from a 500 tonnes salmon production unit. As farm origin nitrogen is evident in biota at distances of up to one kilometre away from the cages, cultured macroalgae would not have to be sited close to cages to result in net nitrogen removal facilitating the siting of algal farms in areas more suited for individual species requirements while still maintaining bioremediation benefits.
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Gonçalves, Mariana Silva. "Cultivation of Osmundea pinnatifida and Codium tomentosum, native seaweed species with commercial potential." Master's thesis, 2018. https://hdl.handle.net/10216/118683.

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Books on the topic "Seaweed cultivation"

1

T, Bird K., and Benson P. H, eds. Seaweed cultivation for renewable resources. Elsevier, 1987.

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Foscarini, Roberto. Handbook on Eucheuma seaweed cultivation in Fiji. Ministry of Primary Industries, Fisheries Division and South Pacific Aquaculture Development Project, Food and Agriculture Organization of the United Nations, 1990.

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Asian Fisheries Forum (7th 2004 George Town, Pulau Pinang, Malaysia). Advances in seaweed cultivation and utilisation in Asia: Proceedings of a workshop held in conjunction with the 7th Asian Fisheries Forum, Penang, Malaysia, December 2004. Edited by Phang Siew Moi, Critchley Alan T, Ang Put O, and Universiti Malaya. Pusat Penyelidikan Maritim. University of Malaya, Maritime Research Centre, 2006.

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Lignell, Åke. Physiology and cultivation of marine seaweeds with emphasis on Gracilaria secundata . Almqvist & Wiksell in Komm., 1988.

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Borges, Bruno. Seaweed Cultivation. Arcler Education Inc, 2017.

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Seaweed cultivation and marine ranching. Kanagawa International Fisheries Training Center, Japan International Cooperative Agency, 1993.

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Sustainable Seaweed Technologies: Cultivation, Biorefinery, and Applications. Elsevier, 2020.

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Dominguez, Herminia, María Dolores Torres, and Stefan Kraan. Sustainable Seaweed Technologies: Cultivation, Biorefinery and Applications. Elsevier, 2020.

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Prospektus komoditi rumput laut: Suatu kajian pengembangan budidaya rumput laut di wilayah kapet Parepare = Prospectus of seaweed commodity : a study of seaweed cultivation development in kapet Parepare region. Integrated Economic Development Zone Parepare, 2006.

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Ravishankar, Gokare A., and Ranga Rao Ambati. Sustainable Global Resources of Seaweeds Volume 1: Bioresources , Cultivation, Trade and Multifarious Applications. Springer International Publishing AG, 2022.

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Book chapters on the topic "Seaweed cultivation"

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Islam, Md Nazrul, Sahanaj Tamanna, Md Shahriar Islam, and Md Noman. "Global Scenarios of Seaweed Cultivation." In Global Blue Economy. CRC Press, 2022. http://dx.doi.org/10.1201/9781003184287-11.

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Tresnati, Joeharnani, Ujiie Kiyokazu, Inayah Yasir, Hakiki Melanie, Risal Aprianto, and Ambo Tuwo. "Seaweed Cultivation for Community Welfare in Coastal Areas and Small Islands." In Seaweed Biotechnology. Apple Academic Press, 2022. http://dx.doi.org/10.1201/9781003300854-2.

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Ajisaka, Tetsuro, and Young-Meng Chiang. "Recent status of Gracilaria cultivation in Taiwan." In Fourteenth International Seaweed Symposium. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1998-6_41.

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Avila, Marcela, Erick Ask, Brian Rudolph, Mario Nuñez, and Ricardo Norambuena. "Economic feasibility of Sarcothalia (Gigartinales, Rhodophyta) cultivation." In Sixteenth International Seaweed Symposium. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4449-0_52.

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Amano, Hideomi, and Hiroyuki Noda. "Natural occurrence of denatured phycoerythrin during Porphyra cultivation." In Fourteenth International Seaweed Symposium. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1998-6_71.

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Kain, Joanna M., and C. P. Dawes. "Useful European seaweeds: past hopes and present cultivation." In Twelfth International Seaweed Symposium. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4057-4_24.

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Wagener, Klaus, and Angela de Luca Rebello. "The mass cultivation of Spirulina platensis in Brazil." In Twelfth International Seaweed Symposium. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4057-4_7.

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Petrell, Royann J., and Sylvain Y. Alie. "Integrated cultivation of salmonids and seaweeds in open systems." In Fifteenth International Seaweed Symposium. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1659-3_8.

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Mumford, Thomas F. "Nori cultivation in North America: Growth of the Industry." In Thirteenth International Seaweed Symposium. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-2049-1_13.

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Kavale, Monica G., and D. B. Largo. "New Interventions in Sargassum Cultivation." In Biotechnological Interventions to Aid Commercial Seaweed Farming. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-97-9427-0_8.

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Conference papers on the topic "Seaweed cultivation"

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Kurniawan, Isrianto, Dony Indrawan, Dharma Saputra, Aditya Cahya Kurnia Rahman, Muhammad Abrar Putra Siregar, and Riduansyah _. "Improving Local Potential and Attempting to Save Environment Between Indonesia – Malaysia Border." In APOGCE 2024. SPE, 2024. http://dx.doi.org/10.2118/221327-ms.

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Abstract Nunukan Regency, located on the Indonesian-Malaysian border, is the largest seaweed-producing area in Indonesia. The territorial waters of Nunukan Island are almost entirely employed as seaweed cultivation areas traditionally by communities. The seaweed cultivation process in water utilizes plastic bottle waste as floats for seaweed seeds. Problems potentially occurred when used plastic bottles employed as floats for seaweed cultivation became piles of rubbish that continued to increase due to obsolete and could contaminate coastal and marine ecosystems. Corporate Social Responsibility (CSR) program aimed to improve local potential by overcoming pollution issues due to the seaweed cultivation process.s Through the CSR program, PT Pertamina EP Tarakan Field (PEP Tarakan Field) initiated a social innovation by inviting all seaweed farmers to exchange incompatible used plastic bottle floats in the cultivation process; the plastic bottle waste could only be used for a short term due to the durability of the bottle material. Furthermore, the plastic bottle waste would be taken to the main waste bank under company guidance. The used plastic bottles would be processed into new floats with better durability and buoyancy; thus, they could be used by seaweed farmers for longer periods. The processed floats would be given free to farmers who were willing to exchange their used bottles. The supervision of the ongoing program was carried out periodically to determine farmer's interest in this program. Socialization also continued to be committed to seaweed farmers regarding the preservation of aquatic ecosystems, which needed to be maintained; hence, the local potential of seaweed could continue to be increased The persuasive methods employed by researchers could be confirmed capable of attracting public attention, especially the seaweed farmers. Within 1-year, most farmers had used more durable recycled floats in their seaweed cultivation activities. The amount of plastic bottle float waste previously produced from the cultivation process could also be reduced, thereby declining environmental pollution risk. The researcher carried out social innovation programs to improve the production efficiency of seaweed cultivation as a leading commodity in Nunukan Regency and reduced plastic bottle waste, which polluted the aquatic ecosystem.
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Lian, Yushun, Shutian Shen, Jinhai Zheng, Samuel Boamah, and Solomon C. Yim. "A Design and Numerical Study on a New Kelp Culture Facility." In ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/omae2023-103027.

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Abstract As the market demand for seaweed products increases rapidly over the last few decades, farming of seaweed has become one of the most economical and environmentally friendly marine operations in aquaculture. Seaweed cultivation areas are primarily concentrated nearshore at present. However, with the expansion of aquaculture facilities, rapid coastal development and industrialization, available coastal area for aquaculture is decreasing sharply. This led to seaweed aquaculture being expanded to deep-water regions. In addition, the seaweed cultivation industry will likely transform from a labor-intensive industry to a technology and mechanization-intensive one. Based on the traditional raft culture facility, this paper develops a new design of a set of kelp culture facility focusing on improving their efficiency and stability. This facility is able to automatically adjust the submergence depth of kelp breeding ropes in different growth periods and dive into the water to withstand wind and waves at extreme sea conditions. The kelp breeding facilities are analyzed using the finite element software ANSYS AQWA. According to numerical analysis results, the dynamic response of aquaculture facilities under different sea conditions is discussed, and the effect of avoiding wind and waves after diving under extreme sea conditions is analyzed. It proves that this facility satisfies the requirements of offshore kelp cultivation, thus providing an essential reference for seaweed cultivation from nearshore to offshore areas.
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Nguyen, H. P., C. M. Wang, B. von Herzen, and C. Huang. "Hydroelastic Responses of Submersible Seaweed Cultivation Platforms With Single-Point Mooring Systems." In ASME 2024 43rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/omae2024-124766.

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Abstract This paper presents simulated and realized designs for a submersible seaweed platform capable of deep cycling to water depths beyond 100 meters. The platform is composed of a bundle of two ring structures made of high-density polyethylene (HDPE) pipes filled with seawater to support seaweed grow-out lines. The platform is kept in position by a single-point mooring system. Winches attached to supporting buoys are used to lower weights that help lower the HDPE ring structure to the desired water depth. The platforms responses under wave action in floating and submerged states are investigated by using the software AquaSim. The numerical results show that the deformed shapes of the simulated seaweed platform are similar to those of physical seaweed platform trialed in Cebu waters in the Philippines by the Climate Foundation. The numerical analysis also indicates that at least three lowering lines held by supporting buoys are needed to prevent excessive deformation and stress concentrations in the platform.
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Amin Alamsjah, Mochammad. "AN OVERVIEW OF THE SEAWEED CULTIVATION IN SEVERAL COUNTRIES: TECHNOLOGY AND CHALLENGE." In 1st International Conference Postgraduate School Universitas Airlangga : "Implementation of Climate Change Agreement to Meet Sustainable Development Goals" (ICPSUAS 2017). Atlantis Press, 2018. http://dx.doi.org/10.2991/icpsuas-17.2018.2.

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Iskandar, C. I. Samuel, D. Favitri, Padlan, and Azizi. "IoT-based of Seaweed Cultivation Employing a Low-cost Autonomous Experimental Buoy." In 2021 15th International Conference on Telecommunication Systems, Services, and Applications (TSSA). IEEE, 2021. http://dx.doi.org/10.1109/tssa52866.2021.9768270.

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Goudey, Clifford A. "Wave Basin Tests of a Novel Offshore Macroalgae Farming System." In SNAME 30th American Towing Tank Conference. SNAME, 2017. http://dx.doi.org/10.5957/attc-2017-0006.

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Macroalgae cultivation in the ocean stands as a promising source of feedstock for biofuels and chemicals. It is particularly attractive because of the efficiency of these marine plants in converting sunlight into biomass and because this type of farming can be done without the risk of displacing land and freshwater from their essential role in feeding the human population. However, there are challenges to achieving this potential due to the limitations of present farming methods. In order to compete economically with land-based biomass production, the bioeconomics of seaweed farming must improve and the areas where it can be practiced must be expanded. Present methods of growing seaweeds are confined to narrow strips along the coasts that are both protected and sufficiently shallow. In order to meaningfully exploit the US Exclusive Economic Zone (EEZ), engineered systems must be developed for high-energy locations in deep water and at an unprecedented scale. This paper will present an innovative design for the farming seaweed in the open ocean and will describe a series of tests conducted at Ohmsett - The National Oil Spill Response Research &amp; Renewable Energy Test Facility - in Leonardo, NJ. The facility was used for these tests because the capabilities matched well testing needs and because the facility uses seawater. Actual fronds of kelp were needed for testing in order to correlate their hydrodynamic characteristics with the scaled materials in 1/20th-scale testing of the structure that was the prime focus of the tests. The results on the resistance testing of single and multiple fronds of kelp will be reported as well as those for the model materials. The results of the tests on various structural models both in currents and in currents and waves will be presented. These tests allowed the measurement of system drag and loads internal to the structure. Accelerations were also measured to determine motions and to predict inertial loading. These tests have allowed us to more confidently design prototype systems that have the potential to revolutionize the domestic seaweed-farming sector.
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Gustin, Oktavianto, Muhammad Zainuddin Lubis, Arif Roziqin, Tri Agus Pertiwi, and Budhi Agung Prasetyo. "Mapping of Physical and Chemical Parameters of Seaweed Cultivation Area in Geranting Island Waters." In The International Conference on Applied Engineering. SCITEPRESS - Science and Technology Publications, 2020. http://dx.doi.org/10.5220/0010351600580063.

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Santjer, Rieke, Patricia Mares-Nasarre, Ghada El Serafy, and Oswaldo Morales-Nápoles. "A Case Study of Ecological Suitability of Mussel and Seaweed Cultivation using Bivariate Copula Functions." In 33rd European Safety and Reliability Conference. Research Publishing Services, 2023. http://dx.doi.org/10.3850/978-981-18-8071-1_p172-cd.

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Li, Hongmei, and Yongyu Zhang. "Seaweed Cultivation Contributes to the Dissolved Organic Carbon (DOC) Pool in a Representative Mariculture Bay, Northern China." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.1478.

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Sato, Toru, Kazunori Koike, Takuro Yoshikawa, and Yoshihiro Tsuchiya. "Hydraulic Model Test and Numerical Simulation of Density Current." In ASME 2003 22nd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2003. http://dx.doi.org/10.1115/omae2003-37085.

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The behaviours of density current were visualised in a simple cylindrical tank and a hydraulic model shaped as Ariake Bay, set in a rotating tank. In both, water was stratified by dissolving salt in the lower layer. In the cylindrical tank, the spread of density current was well parameterised by newly proposed dimensionless numbers. When the Rossby number decreases, we observed that the current was divided into two parts. This may be interpreted as baroclinic instability. In Japan, recently, there is a big discussion on the effect of Isahaya Dyke on the marine ecosystems in Ariake-Bay. We conducted a hydraulic model test and saw the flow difference between the cases with and without the dyke. Also measured was the effect of artificial density current. We found a suitable location for the apparatus for having nutrient-rich water stay at the seaweed cultivation field before it is diffused very much. In addition, we conducted numerical simulations of the above case.
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Reports on the topic "Seaweed cultivation"

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Jansen, H. M., Linda Tonk, A. van der Werf, et al. Development of Offshore Seaweed Cultivation : food safety, cultivation, ecology and economy : synthesis report 2018. Wageningen Marine Research, 2019. http://dx.doi.org/10.18174/470706.

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Tonk, L., and H. M. Jansen. Co-cultivation of the seaweed Ulva sp. and Mytilus edulis. Wageningen Marine Research, 2019. http://dx.doi.org/10.18174/470705.

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Israel, Alvaro, and John Merrill. Production of Seed Stocks for Sustainable Tank Cultivation of the Red Edible Seaweed Porphyra. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7696527.bard.

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Porphyra species (commonly known as ‘nori’ or ‘purple laver’) are edible red seaweeds rich in proteins, vitamins and other highly valued biogenic compounds. For years Porphyra has been cultured using seeded nets extended in the open sea, and its biomass consumed primarily in the Far East. While demands for international markets have increased steadily at an average of 20% per year, supplies are on the verge and not expected to meet future demands. Alternatively, land-based cultivation of seaweed has become attractive in the mariculture industry since (1) important growth parameters can be controlled, (2) is environmentally friendly and (3) perfectly matches with integrated aquaculture leading to sustainable, high quality products. During the last few years a tank cultivation technology for Porphyra has been developed at the Israeli institution. This technology is based on indoor production of asexual spores and their subsequent growth to 1-2 mm seedlings. The seedlings are then transferred to outdoor tanks and ponds when seawater temperatures drop to 20 °C, or below, and days become shorter during winter time. However, the current technology efficiently serves only about 100 m2 of ponds during one growth season. In order to produce seedlings in sufficient amounts, it is critical to address both technical and biological aspects of seedling production, securing optimal up-scale to commercial-size cultivation farms. We hypothesize that massive production of spores is related to thalli origin, thalli age and sporulation triggers, and that seedling survival and their subsequent growth potential is determined by the seawater quality and overall indoor growth conditions imposed. A series of bio-reactors were constructed and tested in which spore release and spore growth were separately studied. The main assessment criteria for optimal viability of the seedlings will be by determining their electron transport rate using PAM fluorometry and by subsequent growth and biomass yields in outdoor ponds. Altogether the project showed (1), controlled sporulation is possible in big outdoor/growth chamber settings provided initial stock material (small frozen seedlings) is at hand, (2), contamination problems can be almost completely avoided if stock material is properly handled (clean as possible and partially dehydrated prior to freezing), (3), spore release can significantly be enhance using high nutrient levels during thawing for P. yezoensis and P. haitanensis, but not for P. rosengurttii, (4), PAM fluorometry is an efficient tool to estimate growth capacity in both seedlings and juvenile thalli. The BARD funding also served to explore other aspects of Porphyra biology and cultivation. For example, the taxonomical status of Porphyra strains used in this study was defined (see appendix), and the potential use of this seaweed in bioremediation was well substantiated. In addition, BARD funding supported a number of opportunities and activities in the Israeli lab, direct or indirectly related to the initial objectives of the project such as: additional molecular work in other seaweeds, description of at least 2 new species for the Israeli Mediterranean, and continuous support for the writing of a book on Global Change and applied aspects of seaweeds. The technology for Porphyra cultivation in land-based ponds is readily available. This study corroborated previous know-how of Porphyra growth in tanks and ponds, and yet offers important improvements regarding seedling production and their handling for successful cultivation. This study supported various other activities opening additional important issues in the biology/cultivation/use of Porphyra and other seaweeds.
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van den Burg, Sander, Cito Wakenge, and Petra Berkhout. Economic prospects for large-scale seaweed cultivation in the North Sea. Wageningen Economic Research, 2019. http://dx.doi.org/10.18174/470257.

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Bernard, M. S., H. Jansen, A. van der Werf, I. van der Meer, and Linda Tonk. Development of offshore seaweed farming: ecology & cultivation : Synthesis report 2019. Wageningen Marine Research, 2020. http://dx.doi.org/10.18174/524395.

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IJntema, Gerben, Pepijn de Vries, Romy Lansbergen, Linda Tonk, and Marnix Poelman. Capturing complex ecosystem services evaluation with rubrics : A case-study of seaweed cultivation. Wageningen Marine Research, 2022. http://dx.doi.org/10.18174/579302.

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Lubsch, Alexander, Dirk Burggraaf, and Romy Lansbergen. Feasibility study on remote estimation of biomass in a seaweed cultivation farm applying sonar : technical report. Wageningen Marine Research, 2020. http://dx.doi.org/10.18174/536545.

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Sutipatanasomboon, Arpaporn. Petri Dishes with Agar: How to Make Agar Plates. ConductScience, 2022. http://dx.doi.org/10.55157/cs20220627.

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Abstract:
Petri dishes and agar form the foundation of the culture plate technique pioneered by Robert Koch, facilitating the cultivation and study of microorganisms. Agar, derived from red seaweed, solidifies into a transparent medium for microbial growth. Agar plates are classified as nonselective, allowing general growth, and selective, inhibiting specific microbes. Petri dishes, with a dish and lid, provide containers for agar, supporting microbial growth. This technique has revolutionized microbiological research, enabling advances in fields like bacteriology, mycology, infectious diseases, and biotechnology.
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Deolu-Ajayi, Ayodeji O., Wouter Muizelaar, and Adrie van de Werf. Seaweed cultivation in Vietnam for livestock methane reduction : A Top Sector Agri & Food SMP (Seed Money Project) report. Stichting Wageningen Research, Wageningen Plant Research, Business Unit Agrosystems Research, 2022. http://dx.doi.org/10.18174/566553.

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Nauta, R. W., E. Rurangwa, G. K. Yona, et al. Seaweed@WUR - East Africa : Scoping study for potential research collaborations in East Africa on seaweed cultivation and integrated aquaculture targeted on Tanzania and the islands of Pemba and Unguja (Zanzibar). Wageningen Marine Research, 2024. https://doi.org/10.18174/677299.

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