SALMON: ARE THEY COMING OR GOING?. Secret Life of Salmon.

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Presentation 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 salmon 1. degrades water quality 2. alters waters flow pattern 3. alters food web 4.fragments habitats 5. 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 Significance of Salmon/Natural Connections/ISBN /Bull Frog Films/copyright 1999.