Accession Number:

ADA048412

Title:

Aquatic Disposal Field Investigations, Columbia River Disposal Site, Oregon. Appendix E. Demersal Fish and Decapod Shellfish Studies.

Descriptive Note:

Final rept. Oct 74-Apr 76,

Corporate Author:

NATIONAL MARINE FISHERIES SERVICE HAMMOND OR

Personal Author(s):

Report Date:

1977-11-01

Pagination or Media Count:

191.0

Abstract:

Information is provided on 51 finfish and 13 decapod shellfish found at five sites off the Columbia River mouth. The effects of a controlled sediment release by hopper dredges on these indigenous species were studied between October 1974 and April 1976. An initial nine-month phase provided biological information at four sites with a fifth site included in July 1975, as an experimental deposition area. The dredges HARDING and BIDDLE released 548,519 m3 of sediment between July 9 and August 26, 1975. Sampling continued during and after sediment release until april 1976.

Subject Categories:

  • Biological Oceanography
  • Soil Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE