Spawning salmon face extreme physiological demands and vulnerability to human disturbance, and conservation practices can minimize additional welfare burden during this critical period.
Spawning salmon face extraordinary physiological demands - hormonal transformation, migration energy costs, and ultimately programmed death in Pacific species. Human activities that add welfare burden to already stressed spawning fish - thermal pollution, gravel disturbance, inappropriate fishing pressure - compound suffering during the most challenging period of these fish's lives. Conservation practices that maintain cool, clean water, appropriate flows, and reduced disturbance around redds minimize the additional welfare burden on spawning fish while protecting the ecosystem services they provide.