A relationship between catch per unit effort (CPUE) and abundance in which, initially, CPUE declines more slowly than true abundance as a stock declines. Hyperstable CPUE provides a positively biased index of abundance.
A relationship between catch per unit effort (CPUE) and abundance in which, initially, CPUE declines more slowly than true abundance as a stock declines. Hyperstable CPUE provides a positively biased index of abundance.