SALMON: ARE THEY COMING OR GOING?. Secret Life of Salmon.
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Transcript of SALMON: ARE THEY COMING OR GOING?. Secret Life of Salmon.
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SALMON: ARE THEY COMING OR GOING?
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Secret Life of Salmon
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Secret life of salmon• Most are anadromous (fish that spend all or part of their adult life in salt water and return to
freshwater streams & rivers to spawn)
• Require water of superb quality, specific depth,temperature and flow speeds
• Species mature between 2-7 years and aggregate to spawn
• Don’t interbreed with other populations• Found in N. Pacific from California to Alaska and
Siberia to Japan• Largest Salmon- Chinook 10-50lbs.• Keystone Species-important food source for wild life• Has survive over 2 million years
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BIODIVERSITY OF SALMON SPECIES
Pacific
Chum
Coho Chinook
Pink
Sockeye
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LIFE CYCLE
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FEATURES
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CHINOOK
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Chum
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COHO
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Sockeye
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Pink/Humpback
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Kokanee
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SIZE AND SPOT COMPARISON
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Location of Tags on Salmon
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Tagging Salmon
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Causes of decline in Salmon population
• Fresh water habitat destruction• Climate change• Overfishing• Agriculture and increase in erosion• Mining, Logging• Water Diversion• Road building• Urbanization• Key Factor –DAMS• Nonindigenous plants and animals• Pesticide Runoff from agriculture
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DAMS
Impact of dams on salmon1. degrades water quality
2. alters waters flow pattern3. alters food web4.fragments habitats5. prevents migration from spaw
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Storm water impact on Salmon
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How you can help Salmon!
• Make wise choices with yard care. • e.g. carefully choose pesticides, herbicides,
insecticides and fertilizers (avoid excess application)
• Avoid using impermeable materials for paving and side walks.
• Use of water should be selective. Use rain barrels, water when sun sets, use sprinklers
• Avoid soil erosion buy keeping soil covered
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HELP SALMON!!
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RESOURCES
• www.Kingcounty.gov/environment/animalsAndPlants• www.wdfw.wa.gov/outreach/fishing/salmon.htm• www.blueoceaninstitute.org• www.nps.gov/olym/naturescience/the-salmon-life-cycles.htm• Significance of Salmon/Natural Connections/ISBN 1-59458-
426-5/Bull Frog Films/copyright 1999.