Wild Salmon Atlantic Population Decline

Atlantic salmon populations have declined dramatically in recent decades due to multiple stressors across their migratory range, from freshwater spawning habitats to ocean feeding grounds.

Key Facts

Atlantic salmon returning to UK rivers have declined by over 70% since the 1970s
Multiple threats operate simultaneously including river barriers, predation, disease, and marine mortality
Salmon farms near wild salmon rivers are associated with elevated sea lice loads on migrating smolts
Ocean warming is changing prey availability in salmon feeding grounds
River restoration including barrier removal is producing localised population increases

Welfare Considerations

Wild Atlantic salmon undergo one of the most demanding physiological journeys of any vertebrate, and when this migration is impaired by barriers, lice infestation, or disease, individual fish suffer through failed spawning runs, exhaustion, and reproductive failure. Fish that fail to reach spawning grounds after investing the enormous energy of a trans-Atlantic migration represent individual welfare failures as well as conservation losses. Protecting and restoring salmon populations serves both welfare and conservation goals simultaneously, making salmon restoration an exceptionally high-value conservation intervention.

What You Can Do

Support river trust organisations working on salmon restoration and barrier removal
Advocate for stronger regulation of salmon farming near wild salmon rivers
Choose sustainably caught wild salmon certified by responsible fishing organisations
Participate in river clean-up events to improve freshwater habitat quality
Donate to salmon research programmes tracking migratory survival and identifying key mortality points