What is questan list four species in the salt marsh community give you an answer?

A questan is a type of ecological survey or study focusing on specific habitats and their organisms. In a salt marsh community, four common species include the smooth cordgrass (Spartina alterniflora), saltmarsh hay (Spartina patens), black needlerush (Juncus romerianus), and various species of salt-tolerant herbs and shrubs like glasswort (Salicornia spp.). These species play crucial roles in the ecosystem by providing habitat, stabilizing soil, and filtering water.