Sc. Riley et al., NEGATIVE BIAS IN REMOVAL ESTIMATES OF ATLANTIC SALMON PARR RELATIVE TO STREAM SIZE, Journal of freshwater ecology, 8(2), 1993, pp. 97-101
Removal estimates conducted on Atlantic salmon parr populations of kno
wn size consistently underestimated population size. This negative bia
s was greater at low parr densities and in reaches with larger cross-s
ectional area.