Record Details
page 355
Oregon Digital
| Field | Value |
|---|---|
| Title | page 355 |
| Relation | Columbia River |
| Date | 2005-02-22 to 2005-04-11 |
| Rights | This item is in the public domain. Acknowledgement of the University of Oregon Libraries as a source is requested. |
| Type | page |
| Format | Scanned from originals using Silverfast AI 6.0 on UMAX Powerlook III flatbed scanner. Scanned images saved as 16 bit grayscale tiffs. 342.218 kb 8 bit - Gray Gamma 2.2 - greyscale Omnipage 14 used to OCR 8 bit grayscale tiffs and generate text files for full text access. 16 bit grayscale tiffs edited in Photoshop 6.0: cropped, rotated, reduced in size, levels adjusted, bit depth reduced to 8 and JPEGs created. |
| Description | Causes for Depletion of Runs The extent of depletion in Columbia River salmon runs cannot be determined because of inadequate data. The decline in the total number of fish entering the river, however, is believed to be substantially greater than the decline in Columbia River catch. The latter decline, as indicated in a preceding table, was from an annual average of 41,000,000 pounds of all species for the 5-year period of 1916-20, to less than 25,000,000 pounds for the period 1936-40. Two... |
| Identifier | http://oregondigital.org/u?/wwdl,1806 |
