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- W1997831210 abstract "Abstract. The characteristics of the commercial catches of Atlantic salmon, Salmo salar L., in the Adour-Gaves Basin at the end of the 19th and 20th centuries were compared with regard lo age structure and mean weight-at-age. A visual analysis of the monthly weight distributions determined an age structure for the 20th century data which was proved to be consistent with the one obtained by scale-reading, ft was therefore used to study the 19th century weight frequency data. Age structure comparison showed a decrease in mean sea age between the two periods (most catches with one sea winter in the 1985-1990 period, instead of two sea winters in the 1873-1898 period). In addition, a drastic decline of the three-sea-winter salmon stock and the almost total disappearance of the four-sea-winter fish was noted between the two periods. The mean weight of one-sea-winter salmon seemed not to have changed while those of multi-sea-winter fish showed a slight decrease between the two periods. The main causes of those changes could have been the reduction of spawning areas due to the building of impassable dams, the dramatic increase in industrial pollution in both upper and lower parts of the rivers, and the exploitation of multi-sea-winter fish in sea fisheries." @default.
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- W1997831210 date "1992-05-01" @default.
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- W1997831210 title "Comparison of Atlantic salmon, Salmo salar L., stocks exploited by commercial fisheries in the Adour Basin, France at the end of the 19th and 20th centuries" @default.
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- W1997831210 doi "https://doi.org/10.1111/j.1365-2109.1992.tb00780.x" @default.
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