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Electronic Recovery of PIT tags From Piscivorous Bird Colonies Brad A. Ryan, Benjamin P. Sandford, April Cameron, and Gene Matthews.

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Presentation on theme: "Electronic Recovery of PIT tags From Piscivorous Bird Colonies Brad A. Ryan, Benjamin P. Sandford, April Cameron, and Gene Matthews."— Presentation transcript:

1 Electronic Recovery of PIT tags From Piscivorous Bird Colonies Brad A. Ryan, Benjamin P. Sandford, April Cameron, and Gene Matthews

2 >12 Million CRB Salmonids PIT tagged 3D9.1BF0F4058C

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4 In the beginning-Visual recovery OSU>2,500 Tags

5 Sand Flea ,119 Tags

6 Ed Nunnallee-400Khz 1998 Rice Island 47,057 Tags

7 1999 Hand Scanners 10,533 Tags

8 Washington Snake River Columbia River Mid-Columbia River >131, Khz Tags East Sand Rice 92,314-Tags Pilings 1,123-Tags Little Memaloose & Miller 5,164-Tags Three Mile Canyon 9,583-Tags Crescent 21,492-Tags Richland & Island 18 2,284-Tags

9 Conversion To Khz ISO Tags ISO-Antenna ISO-Electronics >170,000-ISO Tags

10 Off The Shelf ISO Scanners Khz >55,000-ISO Tags

11 Washington Snake River Columbia River Mid-Columbia River >225, Khz Tags East Sand Rice >150,000 Tags Pilings >200-Tags Little Memaloose & Miller >10,700-Tags Three Mile Canyon >3,200-Tags Richland & Island 18 >5,600-Tags Pot Holes >4,900-Tags Crescent >50,200-TagsFoundation Badger >500-Tags >7,900-Tags

12 Species Vulnerability Photo by BAR

13 Oregon Washington Snake River Columbia River Mid-Columbia River Columbia River Estuary Bonneville Dam

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15 Oregon Washington Snake River Columbia River Mid-Columbia River East Sand Island Bonneville Dam Estuarine Releases

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17 Rearing History Vulnerability Hatchery vs. Wild Photo by RDL

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22 Additional Analysis Transportation –Barge vs. In-river Multiple Bypass Survival –?

23 Other Applications Under Water –Crescent Island Bay >500 Race Ways –Recovery of discarded tags Inside of Predators –Detection of salmonid PIT tags in Caspian tern chicks.

24 Questions


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