Blue carbon potential of coastal wetland restoration varies with inundation and rainfall.

ABSTRACT: There is a growing interest in how the management of 'blue carbon' sequestered by coastal wetlands can influence global greenhouse gas (GHG) budgets. A promising intervention is through restoring tidal exchange to impounded coastal wetlands for reduced methane (CH₄) emissions. We monitored an impounded wetland's GHG flux (CO₂ and CH₄) prior to and following tidal reinstatement. We found that biogeochemical responses varied across an elevation gradient. The low elevation zone experienced a greater increase in water level and an associated greater marine transition in the sediment microbial community (16 S rRNA) than the high elevation zone. The low elevation zone's GHG emissions had a reduced sustained global warming potential of 264 g m^-2 yr

SUBMITTER: Negandhi K 

PROVIDER: S-EPMC6416304 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature