Seaweed forests are carbon sinks that may help mitigate CO2 emissions: a comment on Gallagher et al. (2022) DOI Creative Commons
Karen Filbee‐Dexter, Albert Pessarrodona, Carlos M. Duarte

et al.

ICES Journal of Marine Science, Journal Year: 2023, Volume and Issue: 80(6), P. 1814 - 1819

Published: July 6, 2023

Abstract Recently, Gallagher et al. (2022) suggested that seaweed ecosystems are net heterotrophic carbon sources due to CO2 released from the consumption of external subsidies. Here we outline several flaws in their argument, which believe confuse research on blue potential ecosystems, and unjustifiably generate doubt around initiatives protect restore forests. al.’s evidence relies 18 studies with highly variable measures ecosystem production, do not statistically support conclusion most heterotrophic. This dataset is also inappropriate as it incomplete misrepresents globally, particularly forests, contribute disproportionately global productivity. We maintain climate change mitigation value an depends difference uptake between original its replacement ecosystem. provide drawdown largest flux any vegetated coastal habitat, indeed autotrophic ecosystems. recognize substantial uncertainties remain concerning magnitude by recommend fluxes should be considered more broadly taken into account estimates potential.

Language: Английский

Probing Solubility and pH of CO2 in aqueous solutions: Implications for CO2 injection into oceans DOI Creative Commons
Erfan Mohammadian, Fahimeh Hadavimoghaddam,

Mahdi Kheirollahi

et al.

Journal of CO2 Utilization, Journal Year: 2023, Volume and Issue: 71, P. 102463 - 102463

Published: March 24, 2023

Language: Английский

Citations

41
Emerging towards zero carbon footprint via carbon dioxide capturing and sequestration DOI Creative Commons
Anjana Krishnan, Amrita Nighojkar, Balasubramanian Kandasubramanian

et al.

Carbon Capture Science & Technology, Journal Year: 2023, Volume and Issue: 9, P. 100137 - 100137

Published: Sept. 3, 2023

Concerns about climatic changes and global temperature enhancements have sparked efforts worldwide to curb the magnitude of atmospheric carbon dioxide. A key tactic for achieving dioxide emission mitigation goals is Carbon capturing sequestration, which critical seamless changeover from prevailing fossil-based power systems more eco-friendly future energy systems. Among techniques, post-combustion capture most practical method retrofitting existing plants although results with 3-15 vol.% concentrated gas stream. Chemical looping combustion receives much attention because yielding highly streams up 100% non-pollution offered. This review also explores a variety sequestration strategies, including geological multiple storage sinks, mineral carbonation as well marine sequestration. The transportation facilities comprising pressure vessels, pipelines, cryogenic tanks are discussed briefly. Enhanced recovery, water oil rely on geologically stored taken into account in this analysis part commercial-economic application Along risk considerations related processes, efficient exploitation sequestered delineated road map leading prospects. been raised that widespread adoption will likely be affected by general public perceptions due unawareness, along potential leakages enormous cost, should considered effective uptake strategies.

Language: Английский

Citations

35
Exploring public acceptability of direct air carbon capture with storage: climate urgency, moral hazards and perceptions of the ‘whole versus the parts’ DOI
Terre Satterfield, Sara Nawaz, Guillaume Peterson St‐Laurent

et al.

Climatic Change, Journal Year: 2023, Volume and Issue: 176(2)

Published: Jan. 28, 2023

Language: Английский

Citations

34
Blue carbon pathways for climate mitigation: Known, emerging and unlikely DOI Creative Commons
Jennifer Howard, Ariana E. Sutton‐Grier, Lindsey S. Smart

et al.

Marine Policy, Journal Year: 2023, Volume and Issue: 156, P. 105788 - 105788

Published: Aug. 15, 2023

As interest in natural climate mitigation solutions continues to grow, there is an essential role for coastal and ocean ecosystems ("blue carbon") play. To meet targets, however, it crucial that human actions protect or restore blue carbon sinks are based on solid science actionable management opportunities increase reduce emissions from ecosystem loss. Here, we reaffirm the of wetlands opportunities. We update state regarding existing pathways explore expanding new systems. Specifically, analyze those categorize as "emerging" (e.g., interventions involving macroalgae - both cultivated wild, tidal flats, marine sediments) where action may be able these sinks, but currently have insufficient information ensure their benefit additional. revisit "non-actionable" calcifying organisms fauna) scientific evidence clear no benefit, too uncertain claim can definitively sinks. With limited funding action, critical efforts focus projects with most potential. Blue only one piece challenge, important one. Continued research investment developing policy warranted emerging At same time, world must continue work decrease rapidly, invest other solutions, scale renewable energy technologies.

Language: Английский

Citations

34
Seaweed blue carbon: Ready? Or Not? DOI
Rod Fujita, Simona Augytė,

Jennifer Bender

et al.

Marine Policy, Journal Year: 2023, Volume and Issue: 155, P. 105747 - 105747

Published: July 20, 2023

Language: Английский

Citations

26
Deep-ocean seaweed dumping for carbon sequestration: Questionable, risky, and not the best use of valuable biomass DOI Creative Commons
Thierry Chopin, Barry A. Costa‐Pierce, Max Troell

et al.

One Earth, Journal Year: 2024, Volume and Issue: 7(3), P. 359 - 364

Published: Feb. 8, 2024

Language: Английский

Citations

12
A review of the carbon sequestration potential of fruit trees and their implications for climate change mitigation: The case of Ethiopia DOI Creative Commons
Yohannes Gelaye, Sewnet Getahun

Cogent Food & Agriculture, Journal Year: 2024, Volume and Issue: 10(1)

Published: Jan. 8, 2024

Carbon sequestration is defined as the process of capturing and storing atmospheric carbon dioxide. Fruit crops are indispensable both for climate change mitigation ensuring food security. However, impact fruit trees not adequately investigated. This review assesses potential their implications mitigation. use photosynthesis to absorb CO2 from atmosphere assimilate it into cellulose, lowering buildup. Horn Africa most vulnerable region change, Ethiopia also facing unpredictable weather, which brings sporadic floods droughts that harm agricultural sectors. Dramatic rise 280 ppm in 1850 420.2 ± 0.5 2023 reported link with human activity. In Ethiopian farms, multipurpose rarely cultivated, only experience planting homestead areas. Even though have an enormous store carbon, destruction those results greenhouse gas. Tree plants, including trees, thought 0.42 0.65 pentagrams per year. Above- below-ground biomasses been described sink more than 40% carbon. Agroforestry practices should adopt all species on basis growing stratum. Therefore, order oblige countries versatile meet nutrition security, sequestration, efforts political economic sustainability.

Language: Английский

Citations

10
A comprehensive review of carbon dioxide capture, transportation, utilization, and storage: a source of future energy DOI

Md. Sadman Anjum Joarder,

Md Shafikul Islam,

Md. Hasibul Hasan

et al.

Environmental Science and Pollution Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Language: Английский

Citations

1
Novel marine-climate interventions hampered by low consensus and governance preparedness DOI Creative Commons
Emily Ogier, GT Pecl, Terry P. Hughes

et al.

Nature Climate Change, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Language: Английский

Citations

1
Quantifying baseline costs and cataloging potential optimization strategies for kelp aquaculture carbon dioxide removal DOI Creative Commons
Struan Coleman, Tobias Dewhurst,

David W. Fredriksson

et al.

Frontiers in Marine Science, Journal Year: 2022, Volume and Issue: 9

Published: Aug. 11, 2022

To keep global surface warming below 1.5°C by 2100, the portfolio of cost-effective CDR technologies must expand. evaluate potential macroalgae CDR, we developed a kelp aquaculture bio-techno-economic model in which large quantities would be farmed at an offshore site, transported to deep water “sink site”, and then deposited sequestration horizon (1,000 m). We estimated costs associated emissions nursery production, permitting, farm construction, ocean cultivation, biomass transport, Monitoring, Reporting, Verification (MRV) for 1,000 acre (405 ha) “baseline” project located Gulf Maine, USA. The baseline applies current systems cultivation (100 m) exposed sites using best available modeling methods. calculated levelized unit CO 2 eq (LCOC; $ tCO -1 ). Under assumptions, LCOC was $17,048 . Despite annually sequestering 628 within sink only able net 244 C credits (tCO eq) each year, true “additionality” rate (AR) 39% (i.e., ratio produced gross sequestered biomass). As result optimizing 18 key parameters identified range literature, fell $1,257 AR increased 91%, demonstrating that substantial cost reductions could achieved through process improvement decarbonization production supply chains. Kelp may limited high energy intensive operations, as well MRV uncertainty. resolve these challenges, R&D (1) de-risk designs maximize lease space, (2) automate seeding harvest processes, (3) leverage selective breeding increase yields, (4) assess cost-benefit gametophyte culture both platform driver operating reductions, (5) decarbonize equipment chains, usage, sourcing electricity from renewables employing low GHG impact materials with long lifespans, (6) develop low-cost accurate techniques ocean-based CDR.

Language: Английский

Citations

30