Inland salt marsh

[1] Inland salt marshes (ISMs) are rare, non-tidal wetlands which form either due to the influence of saline groundwater and proximate springs and seeps[2][3] or from evapotranspiration exceeding precipitation.

[1] Primarily located in the Great Lakes region of the US, they are dominantly composed of salt-tolerant, halophytic plant communities including the invasive Phragmites australis (common reed).

A recently accepted European study provides detailed analyses on species associations with salinity, moisture, light availability, and nitrogen content.

This limitation is increased when plants are inundated with water, as higher levels can dilute the soil and reduce availability of nitrate and ammonium sources of nitrogen.

[6] In other words, different species are limited by different factors within an inland salt marsh ecosystem, providing competitive advantages and allowing for the occupation of different niches.