Negative carbon via Ocean Afforestation

N’Yeurt, Antoine De Ramon; Chynoweth, D.P.; Capron, Mark E.; Stewart, Jim R.; Hasan, Mohammed A.

doi:10.1016/j.psep.2012.10.008

Cited by 71 publications

(39 citation statements)

References 16 publications

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“…For example, SABs can provide a three-dimensional habitat for epiphytic organisms as well as for fishes and invertebrates (Zemke-White and Smith 2006). On top of this, given the volume of biomass produced in SABs, the potential for SABs to drawdown and fix anthropogenic CO 2 could also be significant (N'Yeurt et al 2012;Chung et al 2013). This potential role of SABs, however, has not been seriously evaluated.…”

Section: Introductionmentioning

confidence: 99%

“…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). This, however, remains a topic of considerable debate.…”

Section: Introductionmentioning

confidence: 99%

“…Some material though can be buried in sediments or transported to the deep ocean where, even if remineralization occurs, the resulting DIC can be retained in deep oceanic waters for hundreds of years (Harrold et al 1998;Dierssen et al 2009;Trevathan-Tackett et al 2015). Alternatively, if macroalgal biomass is used as a substitute for fossil fuels, this could potentially mitigate the rate of global climate change by reducing our reliance on the latter (Chung et al 2011;N'Yeurt et al 2012). The potential net reduction of greenhouse gas (GHG) emissions could be estimated if, for example, bioethanol from seaweeds produced in SABs is used as an alternative to gasoline from fossil fuel sources; though, GHG emitted in the biofuel production chain should be taken into account.…”

Section: Introductionmentioning

confidence: 99%

“…This is in line with the Ocean Forestry Global Plan that proposed to return the concentration of atmospheric CO 2 to 1960's levels by 2200. With environmental, climatic, economic, political, social, and energy sustainability, BOceanhealing Seaweed Forests^form a multi-dimensional global plan to completely reverse global warming while feeding 10 × 10 9 people with 200 kg of fish per year per person (N'Yeurt et al 2012).…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Carbon dioxide mitigation potential of seaweed aquaculture beds (SABs)

et al. 2016

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“…Shrimp farming, usually undertaken in coastal areas, requires fewer inputs and may be done intensively although eutrophication has always been a concern. Culturing algae in tandem Page 26.720.2 with such activities, especially nuisance alga like Gracilaria, may offer reprieves including a source of forage, bioremediation services, and possibly, a reliable biofuel feedstock [1][2][3][4][5][6][7]. To operate such a system would require significant management and monitoring efforts with respect to wet chemistry and animal husbandry.…”

Section: A Motivation Of the Projectmentioning

confidence: 99%

Experiential Learning Framework for Design and Development of Environmental Data Acquisition System Enhances Student Learning in Undergraduate Engineering Courses

Henry

Zhang

Nagchaudhuri

et al.

2015 ASEE Annual Conference and Exposition Proceedings

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-Kolb's cycle of experiential learning is a well-known and effective model in education which outlines the process where knowledge is gained through transformative experiences. As students immerse themselves in an active learning framework; acquisition of knowledge results from the combination of participation, assimilation, comprehension and conceptualization of experiential processes in the affective, psychomotor and cognitive domains.In this paper we outline efforts to integrate Kolb's cycle within the framework of several engineering courses with particular emphases on instrumentation, basic circuits, and programming language courses while involving selected students from these courses to develop a microprocessor based environmental monitoring and data logging system (EMDLS). The data acquisition system developed will be integrated to an Integrated Multi-trophic Aquaculture (IMTA) system and an autonomous boat currently under development at University of Maryland Eastern Shore (UMES).In building the data acquisition system, the engineering students not only get exposure to a crossdisciplinary team of collaborating faculty members from engineering, environmental sciences and aviation programs at the university, but also work closely with graduate students involved in the primary research efforts. The undergraduate students have worked closely with the faculty and graduate students and have followed the system development procedure, where they proposed project objectives, identified design requirements, characterized system specifications, sourced all required components, and are currently involved in system fabrication. The final system is based on the Arduino MEGA and has the capability to measure eight environmental parameters including temperature, color, dissolved oxygen, oxidation reduction potential (ORP), pH, and nitrate levels. While anecdotal evidence can be readily observed from the student excitement and informal feedback, formal assessment tools for documenting learning outcomes are being developed to appraise student learning and will be utilized at the end of the current semester.

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Seaweed as climate mitigation solution: Categorizing and reflecting on four climate mitigation pathways

van den Burg,

Koch,

Poelman

et al. 2023

WIREs Climate Change

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Global concerns about climate change were once again expressed at the COP27 in Sharm El‐Sheikh. Seaweed is frequently presented as a solution for climate mitigation. For a proper appraisal of its contribution to mitigating climate change, it is necessary to distinguish between, and critically scrutinize, the various pathways seaweed‐based climate mitigations can take. This article identifies four different climate mitigation pathways and critically reflects on each. First, carbon sequestration, occurring when grown seaweed is left in the seas or, second, purposefully sunk. Third, carbon emission reduction, resulting when seaweed‐based products replace products with a higher carbon footprint, either fossil based products or other organic material. Fourth, carbon emission avoidance, taking place when seaweed products are used to avoid greenhouse gas emissions in other production processes. Each of these pathways requires specific methods to quantify their magnitude and comes with critical questions to ask. The sequestration pathway requires monitoring of net carbon production and the amount of carbon that is eventually exported to the deep sea. Pathways 3 and 4 require Life Cycle Assessment and/or Carbon Footprint with system boundaries set to include the production system itself and installation thereof. We propose an unequivocal categorization in a belief that confusion on the benefits of seaweed will eventually impede development of seaweed‐based solutions.This article is categorized under: The Carbon Economy and Climate Mitigation > Benefits of Mitigation

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Negative carbon via Ocean Afforestation

Cited by 71 publications

References 16 publications

Carbon dioxide mitigation potential of seaweed aquaculture beds (SABs)

Carbon dioxide mitigation potential of seaweed aquaculture beds (SABs)

Experiential Learning Framework for Design and Development of Environmental Data Acquisition System Enhances Student Learning in Undergraduate Engineering Courses

Seaweed as climate mitigation solution: Categorizing and reflecting on four climate mitigation pathways

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