High marsh

This zone is impacted by spring tides, which is a bi-monthly lunar occurrence where the high marsh experiences higher inundation levels.

These specialists rely on the high marsh ecosystem to provide for their biological needs to ensure stable productivity and abundance.

[5] The coterminous United States has many estimates for original wetland content, spanning from 211 to 217 million acres total.

"[7] Further, United States wetlands experienced a net loss of approximately 60,000 acres per year spanning from 1998 to 2004.

This coastal development near marshes may increase the nitrogen and phosphorus concentration leached into waterways, particularly from sewage treatment and systems.

[10] When the high marsh plants are exposed to a higher concentration of nitrogen and phosphorus, the underground biomass decreases and the aboveground increases, making the ecosystem susceptible to widening and erosion.

These restrictions prevent the sediment accretion and nutrient deposition that the high marsh relies on for elevation growth and vegetation health.