Shellfish and seaweed mariculture increase atmospheric CO2 absorption by coastal ecosystems

Tang, Qisheng; Zhang, Jihong; Fang, Jianguang

doi:10.3354/meps08979

Cited by 157 publications

(88 citation statements)

References 40 publications

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“…Highest carbon removal rates in the current study were 8.00 and 10.94 g C m -2 d -1 for Effluent 1 and 2, respectively, similar to 11 g C removal m -2 d -1 by Gracilaria vermiculophylla in effluent of turbot, sea bass, and Senegalese sole aquaculture (Abreu et al 2011). Marine algal species in cultivation have tissue carbon contents ranging from 20 to 41% DW (Kim et al 2008, Tang et al 2011, lower than that of P. palmata integrated with halibut. In samples of P. palmata from the wild, tissue carbon contents were 40 to 43% DW during summer (13.5-20°C) and 43 to 45% DW during winter (12-16°C) (Martínez and Rico 2002).…”

Section: Discussionmentioning

confidence: 90%

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Growth and nutrient uptake by Palmaria palmata integrated with Atlantic halibut in a land-based aquaculture system

Corey¹,

Kim²,

Duston³

et al. 2014

ALGAE

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Palmaria palmata was integrated with Atlantic halibut Hippoglossus hippoglossus on a commercial farm for one year starting in November, with a temperature range of 0.4 to 19.1°C. The seaweed was grown in nine plastic mesh cages (each 1.25 m 3 volume) suspended in a concrete sump tank (46 m 3 ) in each of three recirculating systems. Two tanks received effluent water from tanks stocked with halibut, and the third received ambient seawater serving as a control. Thalli were tumbled by continuous aeration, and held under a constant photoperiod of 16 : 8 (L : D). Palmaria stocking density was 2.95 kg m -3 initially, increasing to 9.85 kg m -3 after a year. Specific growth rate was highest from April to June (8.0 to 9.0°C), 1.1% d -1 in the halibut effluent and 0.8% d -1 in the control, but declined to zero or less than zero above 14°C. Total tissue nitrogen of Palmaria in effluent water was 4.2 to 4.4% DW from January to October, whereas tissue N in the control system declined to 3.0-3.6% DW from April to October. Tissue carbon was independent of seawater source at 39.9% DW. Estimated tank space required by Palmaria for 50% removal of the nitrogen excreted by 100 t of halibut during winter is about 29,000 to 38,000 m 2 , ten times the area required for halibut culture. Fifty percent removal of carbon from the same system requires 7,200 to 9,800 m 2 cultivation area. Integration of P. palmata with Atlantic halibut is feasible below 10°C, but is impractical during summer months due to disintegration of thalli associated with reproductive maturation.Key Words: bioremediation; IMTA; integrated multi-trophic aquaculture; nutrient removal; Palmaria INTRODUCTIONMany aquaculture businesses are intent not only on maximizing productivity and profitability, but also accomplishing this using environmentally responsible practices. Efficient use of energy (e.g., pumping of water) and natural resources (surrounding environment, ambient water supply, and waste streams) are key elements in this approach. Land-based recirculating aquaculture systems facilitate greater control over culture water and waste discharge than flow-through systems (Blancheton et al. 2009). Though the surrounding environment may be enhanced by moderate volumes of aquaculture discharge (White et al. 2011), the trend toward larger land-based facilities (e.g., 1,000 metric tons finfish production per year) and the associated effluent waste may pose a risk of local eutrophication. Alternatively, integration of seaweed and land-based marine finfish culture can convert these nutrients to a usable product. Previous investigations into land-based seaweed integration have included Gracilaria For this study, integration of Palmaria palmata and Atlantic halibut was established within a land-based recirculating aquaculture facility for one year to evaluate the growth and nutrient uptake characteristics of the seaweed in a commercial application. This study was essential to compare the bioremediation capacity of P. palmata under both lab and small-scale applied conditions...

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Section: Discussionmentioning

confidence: 90%

“…In 2007, seaweed mariculture reached 1.4 million t in China, representing an estimated 0.34 million t of carbon removed from the marine coastal environment by seaweed harvesting (Tang et al 2011). Investigating carbon dioxide fixation by microalgae in a photobioreactor, Otsuki (2001) found carbon removal rates of 13.75 g C m -2 d -1…”

Section: Discussionmentioning

confidence: 99%

Growth and nutrient uptake by Palmaria palmata integrated with Atlantic halibut in a land-based aquaculture system

Corey¹,

Kim²,

Duston³

et al. 2014

ALGAE

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“…Seaweeds can transform DIC via photosynthesis, thereby decreasing the pCO 2 in seawater. By removing a significant amount of carbon from the ocean at harvest time (Tang et al 2011), these life forms provide potential tools for biomass production as well as CO 2 sequestration (Duarte et al 2005). In addition, seaweeds acting as CO 2 sinks can sequester carbon within their biomass throughout their life spans (Chung et al 2013) and beyond (Delille et al 2009;Trevathan-Tackett et al 2015).…”

Section: Seaweeds and Sabs Capabilities In Co 2 Sequestrationmentioning

confidence: 99%

“…Seaweeds utilize inorganic carbon dissolved in seawater as free CO 2 that diffuses in through cellular membranes from the surrounding seawater (Turan and Neori 2011) and as bicarbonate that is actively pumped into the cell via a carbon concentrating mechanism (Giordano et al 2005;Raven et al 2008). Moreover, the transformation by seaweeds of DIC into organic carbon by photosynthesis can decrease the pCO 2 in seawater (Tang et al 2011). Through these processes the carbon sequestration in seaweed biomass can be considered as a potential mitigation measure against an increase in atmospheric CO 2 (Chung et al 2011;N'Yeurt et al 2012;Chung et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Carbon dioxide mitigation potential of seaweed aquaculture beds (SABs)

et al. 2016

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Seaweed aquaculture beds (SABs) that support the production of seaweed and their diverse products, cover extensive coastal areas, especially in the Asian-Pacific region, and provide many ecosystem services such as nutrient removal and CO 2 assimilation. The use of SABs in potential carbon dioxide (CO 2 ) mitigation efforts has been proposed with commercial seaweed production in China, India, Indonesia, Japan, Malaysia, Philippines, Republic of Korea, Thailand, and Vietnam, and is at a nascent stage in Australia and New Zealand. We attempted to consider the total annual potential of SABs to drawdown and fix anthropogenic CO 2 . In the last decade, seaweed production has increased tremendously in the Asian-Pacific region. In 2014, the total annual production of Asian-Pacific SABs surpassed 2.61 × 10 6 t dw. Total carbon accumulated annually was more than 0.78 × 10 6 t y −1 , equivalent to over 2.87 × 10 6 t CO 2 y −1 . By increasing the area available for SABs, biomass production, carbon accumulation, and CO 2 drawdown can be enhanced. The conversion of biomass to biofuel can reduce the use of fossil fuels and provide additional mitigation of CO 2 emissions. Contributions

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“…Ecologically, the damage of the mussel population will eliminate the role of mussel to absorb harmful pollutants such as Pb and Cd or atmospheric CO 2 which can induce acidification of marine habitat. It is recognized that mussel is not only a beneficial filter feeder animal, but also one of the good carbon sink marine animals [49] by flocculating marine organic particles that enter their body and excrete them as pseudo feces in marine sediment. Economically, the depletion of the mussel population will decrease income of artisanal fishermen livelihood of which depends on the population of marine organisms such as green mussel.…”

Section: Byssusmentioning

confidence: 99%

The Use of Byssogenesis of Green Mussel, Perna Viridis, as a Biomarker in Laboratory Study

Yaqin¹,

Tresnati²,

Ambo‐Rappe³

et al. 2014

CNF

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Marine pollution monitoring is important for food bio-safety as well as the conservation of the environment. The green mussel, Perna viridis has previously been used as an eco-sentinel organism in marine pollution monitoring. In this study the byssogenesis of P. viridis was used as a biomarker during an in vivo study. Fifteen P. viridis were exposed for 14 days in filtered seawater to metal mixtures of lead (Pb) and cadmium (Cd) containing 0.008, 0.04, 0.2, 1, 5 mg/l of each metal for 14 days. The results showed that Pb and Cd residues in the mussel tissue were proportional to the metal concentration in water. Kruskal-Wallis and Dunn's Multiple Comparison tests were used to assess the effects of metal exposure on the production of byssus. The test results showed that the byssus production in 0.2 and 1 mg/l treatments was significantly different from controls (p < 0.05). Backward elimination regression was used to discern the role of Pb and Cd in the byssus productions. The regression demonstrated that Pb played a more important role than Cd in terms of byssogenesis. The study suggested that the byssogenesis production of P. viridis has potential to be used in biomarker studies.

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Shellfish and seaweed mariculture increase atmospheric CO2 absorption by coastal ecosystems

Cited by 157 publications

References 40 publications

Growth and nutrient uptake by Palmaria palmata integrated with Atlantic halibut in a land-based aquaculture system

Growth and nutrient uptake by Palmaria palmata integrated with Atlantic halibut in a land-based aquaculture system

Carbon dioxide mitigation potential of seaweed aquaculture beds (SABs)

The Use of Byssogenesis of Green Mussel, Perna Viridis, as a Biomarker in Laboratory Study

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