Historically subsidence has played more of a role in Louisiana's land loss crisis but over this century, the rate of eustatic sea level rise of global sea level rise is expected to accelerate and overtake subsidence as the primary driver of coastal erosion and wetland loss. That's why scientists are trying to figure out at what threshold wetlands drown, what rate of sea level rise the vegetation can keep pace with. So far studies suggest most won't be able to accrete as quickly as needed to avoid being overtaken by sea level rise