Schlagwort: blue carbon

Yamuza-Magdaleno et al. (2026): Temperature-driven decline in recalcitrant dissolved organic carbon weakens coastal macrophyte’s blue carbon storage potential

Alba Yamuza-Magdaleno, Tomás Azcárate-García, Luis Gonzalo Egea, Xosé Antón Álvarez-Salgado, Hauke Reuter, Fernando Guillermo Brun and Pedro Beca-Carretero, IN: Communications Earth & Environment, https://doi.org/10.1038/s43247-026-03417-y

Marine macrophytes, including seagrasses and seaweeds, are major contributors to the marine carbon cycle through the release of dissolved organic carbon, a fraction of which is recalcitrant (resistant to microbial degradation for weeks to months), thereby supporting long-term carbon storage. Here the authors tested how warming and invasion by a non-native seagrass affect carbon dynamics in temperate macrophyte communities from southern Iberia using controlled mesocosm experiments across three temperatures.

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Zhou et al. (2026): Supporting Blue Carbon Accounting: A Process-Based Productivity Model for Global Salt Marshes

Zhuoya Zhou, Tingting Li et al., IN: Environmental Science & Technology, https://doi.org/10.1021/acs.est.5c05527

Coastal salt marshes (CSMs) are vital blue carbon (BC) reservoirs, yet accurately quantifying their gross primary productivity (GPP) remains challenging due to limitations in terrestrial biosphere models (TBMs), which often overlook coastal-specific processes. Here, the authors present SAL-GPP, a process-based model that incorporates coastal-specific modules to capture the effects of salinity and temperature stress on photosynthesis, as well as light-use efficiency across salinity gradients in diverse CSM plant species.

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Tan et al. (2026): Carbon removal from the ocean by bivalve aquaculture: a global view

Karsoon Tan, Zexin Li, Xueyu Yan, IN: iScience, https://doi.org/10.1016/j.isci.2026.00347

Bivalve aquaculture, a potential carbon sink (FCS), enhances oceanic CO₂ absorption to mitigate climate change. Prior studies, primarily in China, lack a global perspective. Using an updated carbon budget model, this study finds scallops and oysters have the highest removal potential, with oysters being the most farmed.

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Byrne et al. (2026): Wetland Expansion Reduces CO₂-Equivalent Emissions and Strengthens the Congo Basin’s Role as a Net Carbon Sink

Aidan Byrne, Jake Williams and Nathalie Pettorelli, IN: Journal information not specified on PubMed page, https://doi.org/10.1111/gcb.70746

Wetlands are the largest natural source of methane, yet their desiccation releases substantial amounts of carbon dioxide. Changing wetland emissions provide the greatest source of uncertainty in global emissions estimates due to limited data for key tropical carbon sources and sinks, including the Congo Basin. Here the authors quantified changing swamp forest hydrology, forest productivity and greenhouse gas emissions between 2007 and 2024 using satellite Earth observation and emissions datasets.

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Yaseen et al. (2026): Forest blue carbon sink accounting: methodological advancements and uncertainty analysis

Muhammad Yaseen, Waseem Razzaq Khan, Ping Li, Farhan Khalid, Umair Ahmed, Kashif Ali Solangi, Lingxiao Li, Marina Gul, Saraj Bahadur, Haider Sultan and Xiaoshan Zhu, IN: Journal of Forestry Research, https://doi.org/10.1007/s11676-026-01992-6

Mangroves, seagrass beds, and salt marshes represent key Blue Carbon Ecosystems (BCEs) that serve as vital carbon sinks, playing a crucial role in climate change mitigation. However, accurately quantifying blue carbon sequestration in these ecosystems remains challenging due to diverse environmental conditions, inconsistent methodologies, and substantial uncertainties. With the increasing urgency of global climate targets, reliable accounting methods are important for shaping policies and integrating blue carbon into carbon markets. In light of current needs, this review examined a range of carbon accounting methods, including isotopic methods, Unmanned Aerial Vehicles (UAVs), Remote Sensing (RS), modeling approaches (e.g., DeNitrification–DeComposition model (DNDC) and climate models), direct measurements (e.g., biomass sampling and eddy covariance), and Machine Learning (ML).

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Fakhraee (2026): Blue carbon ecosystems and coral reefs as coupled nature-based climate solutions

Mojtaba Fakhraee, IN: Nature Sustainability, https://doi.org/10.1038/s41893-026-01768-0

Restoring coastal ecosystems offers more than just carbon storage: it can also help bring coral reefs back to life. This Perspective explores how the carbon captured by mangroves and other blue carbon systems could be used to support reef restoration, creating a powerful synergy between climate action and marine conservation.

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Chen et al. (2026): Shoot litter outweighs root inputs in building soil organic carbon during Spartina alterniflora invasion in a coastal wetland

Yamin Chen, Yanghui He, Lingyan Zhou, Peter M. Homyak, Guiyao Zhou, Kaiyan Zhai, Diandian Wei, Boyun Tian and Xuhui Zhou, IN: Soil Biology and Biochemistry, https://doi.org/10.1016/j.soilbio.2026.110104

Coastal salt marsh wetlands are highly productive ecosystems with carbon (C) sequestration rates up to 40–50 times higher than forests, making them a major biome for climate change mitigation. However, plant invasions driven by human activities are altering vegetation composition, C allocation, decomposition dynamics, and ultimately the fate of soil organic C (SOC). Here the authors conducted a 4-year field-based mesocosm experiment to simulate the invasion of the C₄ plant, Spartina alterniflora Loisel, into C₃ plant-dominated coastal wetland soils and to quantify the relative contributions of above- and below-ground litter inputs to SOC formation.

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Banerjee et al. (2026): Carbon Sequestration Potentials and Land Management Approaches Along the Fringes of the Mangrove Forest in the Indian Sundarbans

Sinchan Banerjee, Abhisek Santra, Tuhin Bhadra, Roshan Das, Rupayan Sardar, Soumak Roy, Kasturi Mukherjee and Abinit Saha, IN: Springer Nature, https://doi.org/10.1007/978-3-032-00704-9_18

The Sundarbans, a complex coastal mangrove ecosystem, is important for climate change mitigation because it has a significant potential to sequester carbon. The study aims to evaluate the stored and potential threats to blue carbon stocks along the fringe areas of the Indian Sundarbans and to propose effective land management strategies to conserve and restore these stocks. This research used historical data, field measurements, remote sensing data, and different modeling techniques to quantify carbon stocks and project future scenarios.

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Nawab et al. (2025): From pollution to ocean warming: The climate impacts of marine microplastics

Asim Nawab, Muhammad Tariq Khan, I. Ihsanullah, Mohammad Nafees and Aamir Mehmood Shah, IN: Journal of Hazardous Materials Advances, https://doi.org/10.1016/j.hazmp.2025.100032

Despite being a critical global issue, the role of microplastics (MPs) in climate change has received limited attention. Climate disruption and plastic pollution are two major environmental challenges that intersect in complex ways. MPs influence biogeochemical processes, disrupt oceanic carbon pumps, and contribute directly to greenhouse gas (GHG) emissions. In marine ecosystems, MPs alter the natural carbon sequestration by affecting phytoplankton and zooplankton, which are key agents of carbon cycling. Additionally, the plastisphere, a microbial community colonizing MPs, plays a significant role in GHG production due to its diverse microbial networks.

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Krumhansl et al. (2026): Blue carbon sequestration dominated by dissolved organic carbon pathways for kelp forests and eelgrass meadows in Nova Scotia, Canada

Kira A. Krumhansl, Melisa C. Wong, Manon M. M. Picard, Meredith Fraser, Carrie-Ellen Gabriel, Yongsheng Wu and Kumiko Azetsu-Scott, IN: Communications Earth & Environment, https://doi.org/10.1038/s43247-025-03122-2

Existing estimates of carbon sequestration by coastal vegetated ecosystems (e.g., kelp forests, seagrass meadows) remain highly uncertain because they utilize few measurements with high uncertainty or focus on individual stocks or fluxes. Here, the authors combine empirical data with modeling to generate detailed carbon budgets for kelp forests and eelgrass meadows in Nova Scotia, Canada.

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