salmon: are they coming or going?. secret life of salmon
TRANSCRIPT
SALMON: ARE THEY COMING OR GOING?
Secret Life of Salmon
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
BIODIVERSITY OF SALMON SPECIES
Pacific
Chum
Coho Chinook
Pink
Sockeye
LIFE CYCLE
FEATURES
CHINOOK
Chum
COHO
Sockeye
Pink/Humpback
Kokanee
SIZE AND SPOT COMPARISON
Location of Tags on Salmon
Tagging Salmon
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
DAMS
Impact of dams on salmon1. degrades water quality
2. alters waters flow pattern3. alters food web4.fragments habitats5. prevents migration from spaw
Storm water impact on Salmon
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
HELP SALMON!!
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.