Wild Atlantic Salmon Welfare in Declining Rivers

Atlantic salmon face survival challenges that cause chronic physiological stress throughout their remarkable life cycle.

Key Facts

Atlantic salmon populations have declined by 70% in the past 40 years
Salmon navigate 1,000km+ migrations using magnetic field sensing and olfactory cues
River temperature increases above 20 degrees Celsius cause thermal stress in migrating adults
Spawning salmon stop feeding entirely, burning body reserves as they deteriorate physically
Less than 5% of eggs survive to become adults under current river conditions in most catchments

Welfare Considerations

Wild Atlantic salmon experience a life characterised by extraordinary physiological demands and mounting environmental stressors. Climate-driven river temperature increases cause chronic thermal stress during summer migrations. Sea lice from fish farms increase mortality burden. Barriers fragment migration routes. The spawning process itself involves complete physical deterioration. While individual salmon welfare interventions are limited, restoring river conditions — temperature management, barrier removal, sea lice control near farms — addresses the cumulative burden at population scale.

What You Can Do

Support the Atlantic Salmon Trust and Salmon and Trout Conservation
Advocate for lower maximum stocking densities near wild salmon rivers to reduce sea lice
Campaign for habitat restoration and barrier removal in salmon catchments
Reduce consumption of farmed salmon from high-sea-lice operations
Support riparian shade planting programs that reduce river temperatures