The decline of Lake Michigan Salmon

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Presentation transcript:

The decline of Lake Michigan Salmon Impending Doom!? The decline of Lake Michigan Salmon

In the news!

Alewife Introduction Niagara Falls Welland Canal Natural Roadblock Opened in 1859 Allowed for the movement of goods around Niagara Falls. Alewife Migration

Alewife Population Explosion Alewife populations exploded

Lake Michigan Salmon Introduction Salmon were introduced originally in 1870 Alewife populations weren’t large so it was unsuccessful Coho Salmon 1966 – Lake Michigan Chinook Salmon 1967 – Lake Superior & Lake Michigan. The Alewife population was reduced Anglers flocked to Lake Michigan In Lake Michigan, stockings from 1967 to 1970 yielded exceptional angler returns of about 13% of the stocking rate As a result, Chinook Salmon stocking programs spread to lakes Huron (1968), Ontario (1969) and Erie (1970). Since then, a multi-billion dollar sportfishery developed, particularly on lakes Michigan and Huron.

Other Invaders

Zebra Mussel Introduction Zebra Mussels Originally detected in Lake St. Clair in 1988. Native to lakes in southern Russia. Believed brought in ocean going boats ballast water.

Zebra Mussel Population Explosion Zebra Mussel populations exploded

Food Chain

Alewife populations were on the decline by the early 1970’s

2015 – 2016 Achievements Fulton Schools 6th year in the program. 3 of 4 Licensed Teachers Pick-up Eggs (600 eggs) Released 402 Salmon into Fish Creek this year And wore out a bunch of 8th graders.

The Future!!! Pilot Program with the DNR Brown Trout Brook Trout Grayling? Bridging the project into the High School GoFundMe GCCF Greenhouse Grant Professional Development MSTA Conference Beaver Island New Teacher Training