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OCR for page 118
Shellfish Mariculture in Drakes Estero, Point Reyes National Seashore, California
Appendix D
Tabulated Summary of Reported Values of Harbor Seal Flushing Distances
Disturbance Source
Mean (m)
SD
Range (m)
Habitat Type
Reference
Powerboat
No Data
No Data
<100–300
Small Estuary
Allen et al., 1984
Powerboat
144
No Data
28-260
Island Archipelago
Suryan and Harvey, 1999
Powerboat
80
No Data
No Data
Glacial Fjord
Mathews, 1996
Powerboat
105
105
No Data
Glacial Fjord
Lewis and Mathews, 2000
Stationary Powerboat
191
125
27–371
Island Archipelago
Johnson and Acevedo-Gutierez, 2007
Motor yacht
533
No Data
100–1150
Large Estuary
Brasseur and Reijnders, 1994a
Rubber Dinghy
350
No Data
70–650
Large Estuary
Brasseur and Reijnders, 1994a
Cruise Ship
200
No Data
<100–850
Glacial Fjord
Nansen et al., 2006a
Cruise Ship
123
No Data
No Data
Glacial Fjord
Mathews, 1996
People
No Data
No Data
<100–200
Small Estuary
Allen et al 1984
People
200
No Data
10–400
Large Estuary
Brasseur and Reijnders, 1994a
People
142
135
No Data
Glacial Fjord
Lewis and Mathews, 2000
avalues estimated from figures