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- W1592076246 abstract "This chapter discusses the management of hard clam stocks, Mercenaria mercenaria . The factor responsible is deterioration of water quality that caused a considerable number of clam grounds to be closed for production. A number of marine animals are important predators on hard clams. If management is successful, the population of predators may increase also, so that predation may increase, and actually take a much heavier toll than before. Reduced hard clam reproductive success will affect the size of the harvest. Changes in water salinity are important. Hard clams require higher salinity than oysters, and storms that open or close access to the ocean can alter salinity and thus affect abundance. Variations in temperature, in water quality, and many other factors can affect reproduction, and cannot easily be identified or controlled. Management must try to be aware, and be prepared to alter adverse effects. Spawner sanctuaries are one way of assuring a regular supply of larvae. The states have taken steps of various kinds to try to deal with the problems. The information required for management of a wild fishery resource must include measures of setting, growth, recruitment, standing stock, and natural and fishing mortality." @default.
- W1592076246 created "2016-06-24" @default.
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- W1592076246 date "2001-01-01" @default.
- W1592076246 modified "2023-09-27" @default.
- W1592076246 title "Chapter 13 Management of hard clam stocks, Mercenaria mercenaria" @default.
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- W1592076246 doi "https://doi.org/10.1016/s0167-9309(01)80041-7" @default.
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