Sea-level rise is one of the more noticeable threats of climate change to salt marshes. Tidal inundation is also one of the most important structuring forces in salt marshes as inundation drives plant-plant interactions and determines plant zonation. Yet many studies of sea-level rise do not consider whole communities, with a particular dearth of knowledge in Pacific Coast marshes. I conducted an experiment that simulated sea-level rise to determine whether or not plant-plant interactions would be able to rescue communities from the impacts of sea-level rise. I found that in California, sea-level rise increased the strength of competition, likely because higher water levels led to lower salinity, suggesting that salt marsh communities are likely to become less diverse as sea levels rise.
I am now merging this and my intraspecific diversity work by using genetic data and photographs and satellite imagery over time to see how sea-level rise affects plant genotypic diversity.
Relevant papers: Noto and Shurin 2017