Statistical Records and Computations on Red Salmon (Oncorhynchus Nerka) Runs in the Nushagak District, Bristol Bay, Alaska, 1946-59 (Classic Reprint)

Excerpt from Statistical Records and Computations on Red Salmon (Oncorhynchus Nerka) Runs in the Nushagak District, Bristol Bay, Alaska, 1946-59 Accurate determination of sex ratio of fish on the spawning grounds is difficult because of observed differences between sexes in behavior during and after Spawning, in time of dying after spawning, in drifting after death, and in selective feeding by predators. The sex ratios from live and dead counts that were considered to be most representative have been used to arrive at escapement sex ratios in the Wood River lakes for the period 1946 58. In 1959, sex ratios for the Wood River lakes escapement were obtained from daily samples collected throughout the season by beach seine as the salmon entered Lake Aleknagik from Wood River. Daily sex ratios in 1959 were weighted by daily escapements past the Wood River tower enumeration site. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.