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Forschungsbericht

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'http://rightsstatements.org/vocab/InC/1.0/'
Opportunities and risks of current carbon crediting methodologies

Herausgeber

Quelle

Schlagwörter

Küstenökosystem

Förderkennzeichen (FKZ)

3722 42 510 0

Forschungskennzahl

Zitation

Jennerjahn, T., Fallasch, F., Siemons, A., Wissner, N., Lauer, S., Reise, J., Liste, V., & Janas, L. (2026). Analysis of selected Blue Carbon projects in the voluntary carbon market. German Environment Agency. https://doi.org/10.60810/openumwelt-8207
Zusammenfassung englisch
This report examines the risks and opportunities of using carbon crediting mechanisms to fund the protection and restoration of coastal ecosystems. It evaluates seven projects registered in the voluntary carbon market, focusing on key challenges related to integrity risks such as additionality, quantification, permanence, safeguards, and double counting. Despite uncertainties in measurement methods, the report highlights that projects tend to adopt conservative estimates of carbon removals. Aimed at stakeholders in carbon crediting programmes, policymakers, and researchers, it emphasizes the need for improved data collection and peer-to-peer learning to enhance project outcomes.

Übersetzungen

Verbundene Publikation

Veröffentlichung
Potential of Blue Carbon for global climate change mitigation
(German Environment Agency, 2024)
This publication explores the scientific dimensions of blue carbon (BC) for global climate mitigation. BC is defined and criteria for identifying BC measures are outlined based on a comprehensive analysis of current scientific literature. The potential of coastal ecosystems in mitigating climate change and their significance in shaping international climate policy are assessed, while evaluating the possibility of incorporating BC emissions and removals in national greenhouse gas (GHG) inventories. Evidence-based recommendations for integrating BC into robust climate strategies are presented, offering valuable insights for interested policy makers, researchers and climate advocates alike.
Veröffentlichung
Funding conservation and restoration of coastal ecosystems
(German Environment Agency, 2026) Fallasch, Felix; Siemons, Anne; Rickels, Wilfried
This publication analyses the advantages and disadvantages of carbon credits compared to other financing instruments for protecting and restoring coastal ecosystems. Nine instruments are examined, including emission credits, biodiversity certificates, development cooperation, and blue bonds. Several aspects such as scalability, financial stability, carbon accounting, and project integrity are explored. Findings suggest that carbon credits offer scalability and long-term revenue potential but are hindered by high transaction costs, market volatility, and risks to environmental integrity, particularly when used for emission offsetting. The report targets professionals in climate change, conservation, and sustainable finance.
Veröffentlichung
Climate protection measures in coastal ecosystems
(2026) Reise, Judith; Fallasch, Felix; Siemons, Anne; Schneider, Lambert; Jennerjahn, Tim; Rickels, Wilfried; Deutschland. Umweltbundesamt
The publication explores the climate mitigation potential of Blue Carbon ecosystems (BCEs) like mangroves, seagrasses, and tidal marshes. It investigates how to protect and enhance these natural carbon sinks through improved financing, accounting, and reporting mechanisms. At its core, challenges and opportunities for integrating BCEs into climate strategies, particularly in terms of carbon sequestration and safeguarding marine carbon stocks, are examined by this report. Aimed at policymakers, researchers, and environmental organizations, the research provides insights on developing effective Blue Carbon measures and incentives for their protection in the context of international climate policy.
Veröffentlichung
The relevance of autochthonous vs. allochthonous carbon in Blue Carbon ecosystems for climate change mitigation
(German Environment Agency, 2025) Jennerjahn, Tim C.
Blue Carbon ecosystems, such as mangroves, salt marshes, and seagrass meadows, play a vital role in climate mitigation by storing atmospheric CO₂ in their soils.This paper highlights the critical need to distinguish between autochthonous (locally fixed) and allochthonous (externally sourced) carbon to ensure accurate carbon accounting. It states, that the inclusion of allochthonous carbon may overstate climate benefits and lead to over-crediting in carbon markets. To preserve environmental integrity, a conservative accounting approach is recommended, alongside stronger collaboration between scientific research and project developers.
Veröffentlichung
Blue Carbon Ecosystems in Nationally Determined Contributions and national greenhouse gas reporting
(German Environment Agency, 2025) Reise, Judith; Wissner, Nora; Urrutia, Cristina
This paper examines the integration of "Blue Carbon Ecosystems" (BCEs) such as mangroves and salt marshes into Nationally Determined Contributions (NDCs) and National Inventory Reports (NIRs). While developing countries are increasingly including BCEs in their NDCs, reporting in NIRs remains insufficient. Only seven countries account for BCE, with mangroves being the most commonly included. Reporting among EU member states is even more scarce – with only France and Malta reporting on BCEs. The paper, aimed at policymakers and climate experts, emphasizes the need for increased knowledge transfer and further scientific research to improve BCE reporting.

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