Mixed provenance of organic carbon in Northeast Atlantic temperate intertidal seagrass sediments.

ABSTRACT: Blue carbon accreditation for climate mitigation services provided by coastal ecosystems, such as seagrass beds, typically account only for autochthonous organic carbon, potentially underestimating the total carbon sequestration capacity of seagrass ecosystems. Here, a multi-proxy approach is used to determine the provenance of organic carbon in two intertidal temperate seagrass ecosystems in the Northeast Atlantic. The organic carbon to nitrogen ratio (C_org/N) and carbon isotope composition (δ¹³C) of seagrass tissues and sediments from an open coastal sandy site (Ryde, UK) and a muddy tidal inlet site (Farlington Marshes, UK) were measured. Sedimentary C_org/N was higher at the muddy site than the sandy site, suggesting a greater contribution of marine alga

SUBMITTER: Ward EA 

PROVIDER: S-EPMC12311064 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature