08/03/2021
Climate change is causing many species to shift where they live, as the conditions they are adapted to move to new geographical locations. In the coastal wetlands of Florida, for instance, warming temperatures and higher sea levels are allowing mangrove forests to move into areas that were once too cold or too high. Yet when mangrove forests move, they displace habitats like saltmarshes that have existed in those locations for thousands of years. In this study, we examine possible consequences of this plant replacement phenomenon for carbon and nitrogen cycling in the surface layer of the soil. We compare soils between saltmarshes and the neighboring mangrove forests that are encroaching upon them, and we find that surface-soil carbon and nitrogen cycling run faster as a consequence of mangroves replacing saltmarshes.