US Army Corps of Engineers
Portland District Website Website

Number of species versus area

graph depicting the relationship of number of species to flat area (in square meters)The species area curve is useful to predict how many species might colonize an area of habitat.


This helps design projects to provide enough area for maximum biodiversity development.


The graph shows a species area relationship for tidal wetland plant species on flats at Gog-Le-Hi-Te wetland in Tacoma, Wash.

Contact information

Ronald Thom, Ph.D

Marine Research Operations, PNNL
1529 W. Sequim Bay Rd.
Sequim, WA 98382