Figure 7. Example of a system development matrix.

Phragmites australis Distribution

Eradication of P. australis

  • porewater salinity unchanged
  • P. australis eradicated
  • little or no recolonization of native plant species
  • increased porewater salinity
  • P. australis eradicated
  • some recolonization of native plant species
  • latest stage of development (5 years)
  • P. australis eradicated
  • tidal hydrology restored
  • recolonization of native plant species

Decreased P. australis Patch Size

  • porewater salinity unchanged
  • P. australis shorter and somewhat decreased in distribution
  • little or no recolonization of native plant species
  • intermediate stage of development (2 years)
  • increased porewater salinity
  • signs of P. australis die-off and reduction in plant height and distribution
  • some recolonization of native plant species
  • porewater salinity at desired level
  • signs of P. australis die-off and reduction in plant height and distribution
  • some recolonization of native plant species

Similar P. australis Patch Size

  • early stage of development (6 months)
  • porewater salinity unchanged
  • little or no change in P. australis distribution
  • native plant populations threatened by P. australis monoculture
  • increased porewater salinity
  • little or no change in P. australis distribution or apparent health
  • native plant populations threatened by P. australis monoculture
  • porewater salinity at desired level
  • little or no change in P. australis distribution or apparent health
  • native plant populations threatened by P. australis monoculture

0 to 5

5 to 18

>18

Porewater Salinity (ppt)