00000nam 2200000zi 4500 9.956949 CaOODSP 20251031105934 m o d f cr mn||||||||| 251031e199006##bcca ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x7x8 Fs97-4/2080E-PDF Fs97-4/2080E Stanley, Richard David, 1950- author. Sample size versus sample number : sampling optimization for trawl caught rockfish / by R.D. Stanley. Nanaimo, British Columbia : Department of Fisheries and Oceans, Biological Sciences Branch, Pacific Biological Station, June 1990. ©1990 1 online resource (iii, 19 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 0706-6473 ; no. 2080 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 7-8). "Estimates of among sample and within sample variance in proportion-at-age for Pacific ocean perch (Sebastes alutus) were used to examine optimum sampling strategies. The results agree with those in the literature to indicate that, for two-stage sampling, a sample size of more than 100 probably represents over-sampling. If reducing sample size will lead to any increase in the number of samples collected, then optimal sample size may be closer to 50. Furthermore, if the resources available for ageing the specimens are limited such that only a fixed number of specimens can be aged from the pool of samples, then specimens should be drawn from as many samples as possible, rather than ageing all specimens from some samples"--Abstract, page iii. Includes abstracts in English and French. Pacific ocean perch British Columbia Pacific Coast. Zoological specimens British Columbia Pacific Coast. Sampling (Statistics) Sébaste à longue mâchoire Colombie-Britannique Pacifique, Côte du. Zoologie Spécimens Colombie-Britannique Pacifique, Côte du. Échantillonnage (Statistique) Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian manuscript report of fisheries and aquatic sciences ; no. 2080. (CaOODSP)9.505211 PDF 380 KB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-4/Fs97-4-2080-eng.pdf