Jennerjahn, Tim ORCID: https://orcid.org/0000-0003-1022-5126 (2025) The relevance of autochthonous vs. allochthonous carbon in Blue Carbon ecosystems for climate change mitigation. . Fact Sheet . Umweltbundesamt, Dessau-Roßlau, 17 pp.

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Abstract

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.

Document Type:	Report (Working Paper)
Programme Area:	PA3, PA5
Research affiliation:	Biogeochemistry and Geology > Ecological Biogeochemistry
Date Deposited:	08 Dec 2025 12:23
Last Modified:	08 Dec 2025 12:23
URI:	https://cris.leibniz-zmt.de/id/eprint/6045

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