Blog – Page 49 – Washington Sea Grant

1954

major anthropogenic physical disturbance

Columbia River: McNary dam completed

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1954

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Major Anthropogenic Physical Disturbance

1949

LEGISLATIVE ACTIONS

The “edible clam law” is repealed by the legislature.

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APR
1949

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Legislative Actions

1947

1947

LEGISLATIVE ACTIONS

Oyster reserve management shifts from Olympia to Pacific oysters (Dumbauld et al. 2011)

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APR
1947

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Legislative Actions

1942

Major anthropogenic physical disturbances

North Jetty Grays Harbor reconstructed.

Columbia River: Grand Coulee dam (168 meters high) completed.

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APR
1942

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Major Anthropogenic Physical Disturbance

1941

1941

SPARTINA

Spartina alterniflora positively identified from Willapa National Wildlife Refuge (Sheffer 1945).

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1941

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1940

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APR
1940

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Major Anthropogenic Physical Disturbance

1939

major anthropogenic physical disturbance

Columbia River: North Jetty rehabilitation completed; Jetty A completed to a length of 1.6 kilometers

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JUN
1939

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Major Anthropogenic Physical Disturbance

1937

major anthropogenic physical disturbance

Columbia River: Bonneville dam completed

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JUN
1937

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Major Anthropogenic Physical Disturbance

1936

major anthropogenic physical disturbance

Columbia River: South Jetty reconstruction completed, 1 kilometer shorter than length in 1913 (Hickson and Rodolf 1950)

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JUN
1936

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Major Anthropogenic Physical Disturbance

1935

LEGISLATIVE ACTIONS

Bush and Callow Acts are repealed by the legislature (no additional lands sold).

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APR
1935

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Legislative Actions

1930

SHELLFISH AND CULTIVATION

Eastern oysters still exist in small numbers in Willapa (Hopkins 1946). 15 growers are importing Pacific oyster seed from Japan (Kincaid 1968).

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1930

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Shellfish and Cultivation

1929

1929

SHELLFISH AND CULTIVATION

Baypoint Oyster Farms and three other growers plant Crassostrea gigas in Willapa (Kincaid 1968).

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1929

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Shellfish and Cultivation

1928

major anthropogenic physical disturbance

Columbia River: 81 more pile dikes completed

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JUN
1928

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Major Anthropogenic Physical Disturbance

1929

“Oyster growers have tried various means of defense against these persistent burrowers. But there seems to be as yet no really adequate and at the same time practical method of coping with the marine ‘crayfish.’”

Belle Stevens, “Ecological observations on Callianassidae of Puget Sound.” Ecology 10: 399-404

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1928

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Burrowing Shrimp, Quote

1928

BURROWING SHRIMP

Burrowing shrimp are described as a problem for oyster growers; it was hypothesized that the removal of ‘cultch’ substrate during early oyster harvest exposed mud that was subsequently colonized by burrowing shrimp. ‘Boarding’ was used to prevent burrowing shrimp on native oyster Ostrea lurida ground.

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1928

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Burrowing Shrimp

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