Changes in Ecosystem Nitrogen and Carbon Allocation with Black Mangrove ( Avicennia germinans ) Encroachment into Spartina alterniflora Salt Marsh

摘要: Increases in temperature are expected to facilitate encroachment of tropical mangrove forests into temperate salt marshes, yet the effects on ecosystem services understudied. Our work was conducted along a expansion front Louisiana (USA), an area where coastal wetlands rapid decline due compounding factors, including reduced sediment supply, rising sea level, and subsidence. Marsh ecosystems each known for their ability adjust sea-level rise support numerous services, but there some differences societal benefits they provide. Here, we compare carbon nitrogen stocks relate these findings filtration sequestration wetlands. We specifically evaluate implications black (Avicennia germinans) Spartina alterniflora-dominated marsh. results indicate that will lead increased aboveground stocks. However, found no belowground (that is, root sediment) or between marshes mangroves. Thus, shift from marsh may provide decadal-scale increases sequestration, burial) not be affected. measured lower pore water content beneath growing mangroves, which postulate greater uptake storage compartments compared marshes. further studies needed better characterize cycling, storage, export ocean.