Assessment of optimal depth and photon irradiance for cultivation of the brown alga, Sargassum fulvellum (Turner) C. Agardh

Hwang, Eunkyoung; Baek, Jae Min; Park, C. S.

doi:10.1007/s10811-007-9190-7

Cited by 25 publications

(15 citation statements)

References 12 publications

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“…1), whilst nursery and on-growing culture techniques are similar to those of Sargassum fulvellum (Turner) C. Agardh as described by Hwang et al (2007). They reported that growth of S. fulvellum could be optimized by controlling the depth at which the cultivation ropes were held.…”

Section: Discussionmentioning

confidence: 90%

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The mass cultivation of Ecklonia stolonifera Okamura as a summer feed for the abalone industry in Korea

2009

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The mass cultivation of Ecklonia stolonifera Okamura was studied as a possible summer feed for the abalone industry in Korea for the period between August and November when Undaria and Laminaria are not available. Experiments were conducted to investigate the optimal conditions for artificial seed production and mass cultivation of this species. Seedlings of E. stolonifera were reared in an indoor tank for 60 days until they were around 500 μm in length. Following indoor tank culture, the seedlings were transferred in situ to a nursery culture area for 2 months, before begin transferred to the main grow-out area. The maximum growth and development of young thalli in nursery culture area occurred at 2 m depth, whilst maximum growth of thalli in the main culture area occured at 1.5 m depth. Production of E. stolonifera was between 3 and 9 kg wet wt. m −1 in the first year of culture after seeding and 12 to 13 kg wet wt. m −1 in the second year of culture, after management (depth control and fouling organism removal, etc.) of the holdfast. The relationship between optimal water depth for culture and underwater irradiance during the E. stolonifera cultivation was defined as: y =−0.331x+ 8.198 (r 2 =0.9903). The growth rates achieved in this trial indicate that E. stolonifera cultures could produce sufficient biomass to supply summer feed for the Korean abalone industry.

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Section: Discussionmentioning

confidence: 90%

“…The probe was held at each depth for 5 min, during which time an average reading was taken. Surface PAR measurements were taken between each depth reading at the start and end of deth profiles at each site as described by Hwang et al (2007).…”

Section: Cultivation Site and Periodmentioning

confidence: 99%

The mass cultivation of Ecklonia stolonifera Okamura as a summer feed for the abalone industry in Korea

2009

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“…Most previous studies over multiple generations of algae have been conducted at laboratory scale under controlled conditions (Monro and Poore 2004;Xu et al 2012). In contrast, studies conducted at a larger scale have been focused on environmental parameters with the exclusion of multiple generations (Hwang et al 2007;Edwards and Dring 2011;Handå et al 2013). As an example, we have shown considerable variation in productivity of Ulva sp.…”

Section: Released Swarmers (×10mentioning

confidence: 89%

“…Notably, most environmental conditions, including nutrients, water temperature and salinity, remained relatively constant for the experimental duration of 5 months, while the average photosynthetically active radiation nearly halved. Light is important for algal growth and productivity (Taylor et al 2001;Pang and Lüning 2004a;Hwang et al 2007;Edwards and Dring 2011) and affects reproductive output, maturation and quality of released swarmers (Makarov and Voskoboinikov 2001;Dan et al 2002;Pang and Lüning 2004b;Lüning et al 2008). However, our findings clearly demonstrate generational effects in combination with environmental effects, such that both require consideration for the intensive production of biomass.…”

Section: Discussionmentioning

confidence: 99%

Reproductive output and productivity of filamentous tropical Ulva over time

et al. 2015

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The production of macroalgae in the tropics requires robust species that tolerate temperature and salinity fluctuations. The widely distributed macroalga Ulva sp. 3 is tolerant of these environmental challenges; however, a reliable source of seedlings and a consistent production of biomass are critical for the sustainable long-term cultivation of this species. Therefore, the objective of this study was to quantify the reproductive output and productivity of multiple cultivation cycles of the asexually reproducing Ulva sp. 3 seeded onto ropes using the harvested biomass of each cycle as the seedstock for each successive generation. The seedstock of three independent collections was assessed across multiple asexual generations in outdoor culture to investigate generational and environmental effects. This study, for the first time, has demonstrated that Ulva sp. 3 can be cultivated successfully over multiple (up to seven) successive generations and highlighted the importance of generational and environmental effects. Notably, there was an order of a magnitude decrease in reproductive output and greater than 4-fold decrease in biomass productivity across generations, while the decrease across cultivation cycles was more pronounced with a greater than 20-fold decrease in reproductive output and an order of a magnitude decrease in biomass productivity. The marked decrease in reproduction and productivity was driven by a generational effect in combination with environmental effect across the multi-generational study and both require consideration for the intensive production of biomass.

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“…집약적인 양식을 통한 해조류의 대량 양식기 술은 중국, 일본 그리고 우리나라의 김, 미역 및 다시마 (Kawashima, 1984;Tseng, 1987;Ohno and Matsuoka, 1993;Oohusa, 1993) 등에서 발달되어왔다. 감태 (Ecklonia cava Kjellman)는 해중림을 구성하는 대형 갈조류로서 연안 생태계에서 1차 생산자로서의 중요한 기능 을 담당하고 있으며 (Kang and Yoo, 1993;Brown and Lamare, 1994), 해중림 조성용, 식용 또는 기능성 물질의 추출원 (Athukorala et al, 2006;Hong et al, 2006) 감태의 안정적인 대량양식 생산을 유도하기 위해서는 최근 모자반 (Hwang et al, 2007)과 곰피 (Hwang et al, 2009 (Fig. 1A).…”

Section: 서 론 해조류는 아시아 지역 국가들에서 인간의 식량원이나 해산unclassified

Nursery and Main Culture Conditions for Mass Cultivation of the Brown Alga, Ecklonia cava Kjellman

Hwang¹,

Gong²,

Ha³

et al. 2010

Korean Journal of Fisheries and Aquatic Sciences

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The mass cultivation of Ecklonia cava Kjellman was studied as a potential biomass source for the extract industry in Korea. Experiments were conducted to investigate the optimal conditions for artificial seed production and mass cultivation of this species. Maximum growth and young thalli development in the nursery culture area occurred at 2 m depth, whereas maximum growth of thalli in the main culture area occurred at 1 m depth. Production of E. cava was between 2.6 and 3.6 kg wet wt. m -1 after depth control and removal of fouling organism, etc. The relationship between optimal water depth for culture and underwater irradiance during the E. cava cultivation was calculated as: y = -0.718x + 8.042 (r 2 =0.976). The growth rates achieved in this trial indicate that E. cava cultures could produce and supply sufficient biomass. (Fig. 1A). 채묘틀은 4시간 동안 유주자액에 담가 유주자 착생을 유도하고 이후 깨끗한 여과해수를 넣은 수조로 옮겨 수조배양을 실시하였다 (Fig. 1B). 수조 배양은 유주자 채묘후 1주일간은 배양 해수를 환수시키지 않았으며, 이후 0.5 L min -1

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Assessment of optimal depth and photon irradiance for cultivation of the brown alga, Sargassum fulvellum (Turner) C. Agardh

Cited by 25 publications

References 12 publications

The mass cultivation of Ecklonia stolonifera Okamura as a summer feed for the abalone industry in Korea

The mass cultivation of Ecklonia stolonifera Okamura as a summer feed for the abalone industry in Korea

Reproductive output and productivity of filamentous tropical Ulva over time

Nursery and Main Culture Conditions for Mass Cultivation of the Brown Alga, Ecklonia cava Kjellman

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