Scientific Investigations Report 2006–5225
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5225
Table 1. Collection gears and effort of each gear used for the capture of white sturgeon embryos, free embryos, and larvae in the Columbia River near Ives and Pierce Islands.
| Gear | Effort (hours) |
Stage collected | ||
|---|---|---|---|---|
| Embryo | Free embryo | Larvae | ||
| Artificial substrate | 1,273.45 | 254 | 0 | 0 |
| Plankton net | ||||
| Boat D-shaped | 2.75 | 0 | 0 | 0 |
| Staked D-shaped | 46.53 | 0 | 0 | 1 |
| Staked square | 25.60 | 0 | 0 | 0 |
| Bilge pump | .83 | 0 | 0 | 0 |
| Kick net | 22.42 | 0 | 6 | 0 |
| Slurp gun | .58 | 0 | 0 | 0 |
| View scope | .75 | 0 | 0 | 0 |
U.S.
Department of the Interior | U.S. Geological
Survey
Persistent URL: https://pubs.water.usgs.gov/sir20065225
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