Effects of commercial fishing on adult Atlantic salmon (Salmo salar) in a Quebec river
MetadataShow full item record
Despite an absence of freshwater exploitation, the adult salmon run in the Matamek River, Quebec, declined during 1975-1980 to <23% of the level thought to occur there prior to 1967. Returns in 1979 and 1980 of adults tagged as smolts were 1.0% and 0.9%, respectively. Numbers of emigrating smolts and their corresponding adult returns are not significantly correlated, although we observed a trend towards more salmon (2 sea year fish) returning with larger numbers of migrating smolts. Since 1967 there is noted a decrease in the age at which returning adults smolted and females appear to now constitute a larger percentage of returning grilse and salmon. These, and other changes in life history characteristics, appear to be caused solely by commercial exploitation.
Suggested CitationTechnical Report: Whoriskey, Frederick G., Naiman, Robert J., "Effects of commercial fishing on adult Atlantic salmon (Salmo salar) in a Quebec river", 1982-01, DOI:10.1575/1912/8955, https://hdl.handle.net/1912/8955
Showing items related by title, author, creator and subject.
Salmon, Rick; Ewing-DeRemer, Barbara (Woods Hole Oceanographic Institution, 1993)"Geometrcal methods in fluid dynamics" were the subject of the 1993 GFD session. Paricipants explored the applications of Hamiltonian fluid mechanics and related ideas about symmetry and conservation laws to problems in ...
Salmon, Rick; DeRemer, Barbara Ewing (Woods Hole Oceanographic Institution, 1990-10)The 1990 program in Geophysical Fluid Dynamics had as its special topic "Stellar Fluid Dynamics". Introductory lectures by Edward Spiegel and Jean-Paul Zahn paved the way for more specialized seminars on solar oscillations, ...
Salmon, Rick; Flierl, Glenn R.; Campbell, Lee Anne (Woods Hole Oceanographic Institution, 1996-07)The 1995 program in Geophysical Fluid Dynamics addressed "Rotating Convection," with particular emphasis on high-Rayleigh-number convection and on convection in the ocean.