| dc.date |
2006-08-24T21:01:48Z |
|
| dc.date |
2006-08-24T21:01:48Z |
|
| dc.date |
1941 |
|
| dc.date.accessioned |
2013-10-16T07:39:54Z |
|
| dc.date.available |
2013-10-16T07:39:54Z |
|
| dc.date.issued |
2013-10-16 |
|
| dc.identifier |
http://ir.library.oregonstate.edu/dspace/bitstream/1957/2973/1/Present_State _Salmon_Resources_ocr.pdf.pdf |
|
| dc.identifier |
http://hdl.handle.net/1957/2973 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/2973 |
|
| dc.description |
Reprinted from Proceedings of the Sixth Pacific Science Congress, University
of California Press, Berkeley, California, 1941. |
|
| dc.description |
THE SALMON of the Columbia River have supported an intensive fishery for
over seventy years but are now showing unmistakable signs of depletion, and
various factors are contributing to the rapid progress of this condition. Five
species of fish enter into the commercial fishery on the Columbia River itself.
These are (1) the Chinook salmon (Oncorhynchus tschawytscha), (2) the
blueback salmon (0. nerka), (3) the silver salmon (0. kisutch) , (4) the chum
salmon (0. keta) and (5) the steelhead trout (Salmo gairdneri) . The Chinook
is of far greater importance than all other species together and constitutes
by weight approximately three-quarters of the total catch. In addition to the
catch made in the river a large number of Columbia River salmon are taken
in the ocean, especially by trolling, but to a small extent by purse seines. This
oceanic catch is almost exclusively composed of Chinooks and silver salmon.
The annual commercial value of the pack of salmon on the Columbia River
has averaged about four and a half million dollars over the past thirty years.
Thousands of people are directly dependent upon this industry for all or part
of their income and other thousands benefit indirectly. It constitutes one of
the major resources of the Pacific Northwest. |
|
| dc.language |
en_US |
|
| dc.publisher |
Salem, Or. : Department of Research, Fish Commission of the State of Oregon |
|
| dc.relation |
Contribution (Oregon. Fish Commission) |
|
| dc.relation |
no. 3 |
|
| dc.relation |
Reports and Publications -- Other Reports and Publications |
|
| dc.subject |
Thematic Classification -- Plants and Animals -- Fish -- Anadromous Fish -- Chinook Salmon |
|
| dc.subject |
Thematic Classification -- Plants and Animals -- Fish -- Anadromous Fish -- Chum Salmon |
|
| dc.subject |
Thematic Classification -- Plants and Animals -- Fish -- Anadromous Fish -- Steelhead Trout |
|
| dc.title |
The present state of the Columbia River salmon resources |
|
| dc.type |
Technical Report |
|