This clearly reduces the number of plants that can't exist with increases in salinity, but does it increase the amount of plants capable of living with salt(ier

This clearly reduces the number of plants that can't exist with increases in salinity, but does it increase the amount of plants capable of living with salt(ier)-water? I'm curious how this shift affects the ecosystem ability to process CO2 -- let's say the number of "plants" remains the same, but the type of plants change, and the type of plants with the ability to process CO2 changes.