Stocks and fluxes of carbon and nitrogen in northeastern Brazil coastal seascapes.

ABSTRACT: Quantifying carbon and nitrogen dynamics is essential for understanding the role of coastal ecosystems in climate change mitigation and habitat connectivity. We assessed organic carbon (OC) and total nitrogen (TN) stocks, accumulation rates, and isotopic composition (δ¹³C and δ¹⁵N) in sediment across diverse seascapes in northeastern Brazil, including high- and low-salinity mangroves, a tidal flat, a freshwater marsh, and an inundated forest. OC stocks in the upper meter of sediment were highest in the freshwater marsh (283 ± 64 Mg OC ha^-1) and tidal flat (266 ± 27 Mg OC ha^-1), and were comparable to mangroves (239 ± 11 to 263 ± 44 Mg OC ha^-1), while the inundated forest stored less (138 Mg OC ha^-1). Accumulation rates were

SUBMITTER: Jatoba-Junior AA 

PROVIDER: S-EPMC12848142 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature