These low population sizes are related to a variety of factors including dams, destruction of spawning and rearing habitat, overfishing, poor ocean conditions, water pollution, loss of genetic integrity, and disease.
(These low population sizes; are related; to a variety of factors including dams, destruction of spawning and rearing habitat, overfishing, poor ocean conditions, water pollution, loss of genetic integrity, and disease)
These low population sizes
are related
to a variety of factors including dams, destruction of spawning and rearing habitat, overfishing, poor ocean conditions, water pollution, loss of genetic integrity, and disease