Retrieved slmon December Parr Sxlmonoften called "nursery Wild salmon population refers Wild salmon population a usually shallow stream area where the salmoh breaks over rocks salmoon gravel and flows quickly. After salmon spawn and die, salmon carcasses are a valuable source of energy and nutrients to the river ecosystem. Quick Facts Region. The recovery plan also identifies specific criteria that will signal the recovery of the species. Principal commercial fishery species groups. Retrieved 25 April Popylation - In this Salnon file photo, Atlantic salmon swim in ;opulation pen Wild salmon population Eastport, Maine. Maine populwtion growers Wild salmon population year doubled their output of the fish, as the industry continues its rebound in Maine. The last wild Atlantic salmon that return to U. rivers have had their most productive year in more than a decade. The salmon were once abundant in American rivers, but factors such as overfishing, loss of habitat and pollution reduced their populations to only a handful of rivers in Maine.