Evaluation of nutrient bioextraction by seaweed and shellfish aquaculture in Korea

Park, Ji Sook; Shin, Sook Kyung; Yarish, Charles; Yoo, Hyun Il; Kim, Jang K.

doi:10.1111/jwas.12786

Cited by 22 publications

(11 citation statements)

References 56 publications

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“…To achieve environmental and economic sustainability, IMTA practices were conducted co-cultivating kelps (U. pinnatifida and S. japonica), pacific oysters (Crassostrea gigas) and sea cucumbers (Stichopus japonicas) adjacent to finfish Sebastes schlegeli or red seabream (Pagrus major) cages. All organisms in this IMTA system grew equally well or better than those grown in monoculture farms (Park et al 2018(Park et al , 2021a. Seaweeds removed nitrogen very efficiently and tissue nitrogen content in the kelps was up to 3.5% in the IMTA system, which is much higher than that in monoculture (< 2.5%) (Park et al 2021a(Park et al , 2021b.…”

Section: 2021amentioning

confidence: 85%

“…All organisms in this IMTA system grew equally well or better than those grown in monoculture farms (Park et al 2018(Park et al , 2021a. Seaweeds removed nitrogen very efficiently and tissue nitrogen content in the kelps was up to 3.5% in the IMTA system, which is much higher than that in monoculture (< 2.5%) (Park et al 2021a(Park et al , 2021b. Offshore seaweed (mainly Saccharina latissima) aquaculture is being conducted in Europe (Germany, Belgium, the Netherlands, Norway) and in North America (Canada and the United States).…”

Section: 2021amentioning

confidence: 95%

“…A recent study even estimated specific CDR by S. japonica and U. pinnatifida aquaculture. The amount of CDR was over 50,000 tons per year, equivalent to nearly 2% of CO 2 discharged from all wastewater treatment plants in Korea (Park et al 2021a). The major challenge, however, is that the majority of seaweed production is decomposed into the ocean within a relatively short time (weeks to years).…”

Section: Kelp Aquaculture For Climate Change Adaptationmentioning

confidence: 99%

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Kelps in Korea: from population structure to aquaculture to potential carbon sequestration

Hwang¹,

Boo²,

Graf³

et al. 2022

Algae

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Korea is one of the most advanced countries in kelp aquaculture. The brown algae, Undaria pinnatifida and Saccharina japonica are major aquaculture species and have been principally utilized for human food and abalone feed in Korea. This review discusses the diversity, population structure and genomics of kelps. In addition, we have introduced new cultivar development efforts considering climate change, and potential carbon sequestration of kelp aquaculture in Korea. U. pinnatifida showed high diversity within the natural populations but reduced genetic diversity in cultivars. However, very few studies of S. japonica have been conducted in terms of population structure. Since studies on cultivar development began in early 2000s, five U. pinnatifida and one S. japonica varieties have been registered to the International Union for the Protection of New Varieties of Plants (UPOV). To meet the demands for seaweed biomass in various industries, more cultivars should be developed with specific traits to meet application demands. Additionally, cultivation technologies should be diversified, such as integrated multi-trophic aquaculture (IMTA) and offshore aquaculture, to achieve environmental and economic sustainability. These kelps are anticipated to be important sources of blue carbon in Korea.

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Section: 2021amentioning

confidence: 85%

Section: 2021amentioning

confidence: 95%

Section: Kelp Aquaculture For Climate Change Adaptationmentioning

confidence: 99%

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Kelps in Korea: from population structure to aquaculture to potential carbon sequestration

Hwang¹,

Boo²,

Graf³

et al. 2022

Algae

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“…Seaweeds have been extensively cultivated in Asian countries including China, Indonesia, Korea, and Japan 1 . The seaweed aquaculture industry is growing rapidly in Americas and Europe, with cultivation gaining interest boosted by applications for food, feed, cosmeceuticals, nutraceuticals and most recently for biofuels 2 – 4 . Korea is the third largest producer of seaweed in the world after China and Indonesia 1 .…”

Section: Introductionmentioning

confidence: 99%

Effects of extraction methods for a new source of biostimulant from Sargassum horneri on the growth of economically important red algae, Neopyropia yezoensis

Han

Park

Umanzor

et al. 2022

Sci Rep

Self Cite

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Sargassum horneri is a major bloom forming species in Korea and China. It is important to find a way to utilize the huge biomass of Sargassum horneri in the region. Seaweed-derived biostimulants are primarily derived from brown algae and are known to improve terrestrial crop growth and tolerance to abiotic stresses. Neopyropia yezoensis is the most important seaweed cultured species in Korea, and research is required to increase heat resistance as a solution against climate change. In this study, various extraction methods were used to obtain Sargassum horneri extract, and it was applied to Neopyropia yezoensis to evaluate the effect on physiological activity. Metabolites of Sargassum horneri were extracted by using four different methods: boiling (SBE), soaking (SSE), autoclaving (SAE) and ethanol (SEE). The SBE, SSE and SAE derived extracts showed increased tolerance to high-temperature stress that had inhibited the growth of Neopyropia yezoensis, and show improved growth compared to the control group. The SBE and SSE extraction methods improved the content of phycobiliprotein, but also the SBE increased superoxide dismutase (SOD) activity. Based on the results of this study, the boiling extraction method appears to be the most suitable method for the extraction of plants stimulants from Sargassum horneri.

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“…An increasing body of evidence shows that seaweeds, including kelp, can be used as a tool to neutralize or remove excess nutrients and metals from land-based and coastal finfish aquaculture, as well as urban, industrial, and agricultural runoff from coastal systems [7][8][9][10][11]. Studies also suggest that kelp farming can modulate carbon cycling, potentially offsetting effects by increased atmospheric CO2 [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and Carbon Removal Capacity by Farmed Kelp Varies by Species

Umanzor¹,

Stephens²

2022

Preprint

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An increasing body of evidence shows that seaweeds, including kelp, can be used as a tool to neutralize or remove excess nutrients and metals from the water column. Here we report on a preliminary field assessment showing potential nutrient and carbon removal differences by sugar kelp and ribbon kelp grown in common gardens. Seawater and tissue samples were collected systematically from two farms in Alaska. Results show differences between % N and % C content between ribbon kelp (Alaria marginata) and sugar kelp (Saccharina latissima). Results also show that tissue nitrogen in ribbon kelp varies sharply due to nitrogen availability in the water column. In contrast, the percentage of tissue N in sugar kelp remains comparatively stable. Our outcomes provide insight into potential differences in nutrient removal and harvest timing for different kelp species.

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Evaluation of nutrient bioextraction by seaweed and shellfish aquaculture in Korea

Cited by 22 publications

References 56 publications

Kelps in Korea: from population structure to aquaculture to potential carbon sequestration

Kelps in Korea: from population structure to aquaculture to potential carbon sequestration

Effects of extraction methods for a new source of biostimulant from Sargassum horneri on the growth of economically important red algae, Neopyropia yezoensis

Nitrogen and Carbon Removal Capacity by Farmed Kelp Varies by Species

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