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Filtering by: Alternative title ssim Monograph number 21 Remove constraint Alternative title ssim: Monograph number 21 Decade 1970-1979 Remove constraint Decade: 1970-1979 Non-Academic Affiliation Oregon. Department of Fish and Wildlife Remove constraint Non-Academic Affiliation: Oregon. Department of Fish and Wildlife

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  • The 1973 razor clam fishery

    Creator:
    Link, Terry
    Abstract:
    Razor clam diggers were sampled from March through September on Clatsop beaches for number and age composition of the clams harvested and the distribution and number of diggers. Data from beaches south of Tillamook Head was collected as time permitted. Samples of razor clams from Clatsop beaches were collected for...
    Resource Type:
    Technical Report
    Full Text:
    sampled from March through September on Clatsop beaches for number and age composition of the clams

  • Evaluation of the 1977 bay clam regulations

    Creator:
    Gaumer, Tom
    Abstract:
    In 1976, the Oregon Department of Fish and Wildlife Commission approved regulation changes for the sport harvest of bay clams. The changes were made at the request of the shellfish staff; our concern was the gradual deterioration in the status of the stocks as reflected in annual census work on...
    Resource Type:
    Technical Report
    Full Text:
    , increase in 111can size from 36.7 nHn in lcJ75 to 38.2 mm in 1978. t-ivure 7 shows the number of c ·l ams

  • Annual report - Game Division : 1970

    Creator:
    Oregon. State Game Division
    Abstract:
    July 1, 1969 - June 30, 1970. Item does not carry publication date.
    Resource Type:
    Technical Report
    Full Text:
    reported taking 32,640 animals of which 5,757 (18 percent) were antlerless. This was a 21 percent decline

  • Data report: harvest of intertidal, nonfood invertebrates, 1974

    Creator:
    Osis, Laimons and Furgason, Gary
    Abstract:
    This report discusses the harvest of intertidal non-food invertebrates in 1974, gives the number of collection permits issued, and describes intensity of collection by area.
    Resource Type:
    Technical Report
    Full Text:
    change from 1973 +12% -26% -21% Number of Index Animals Taken. ----. " ~ 2-5 -_:_ __ Eleven Year

  • Data report: harvest of intertidal, nonfood invertebrates, 1973

    Creator:
    Osis, Laimons
    Abstract:
    This report discusses the harvest of intertidal non-food invertebrates in 1973, giving number of collecting permits issued and intensity of collecting by area.
    Resource Type:
    Technical Report
    Full Text:
    and report the number of animals collected, by area. This report summarizes the 1973 collecting

  • The Biology of the winter steelhead of the Willamette River, Oregon

    Creator:
    Clady, Michael D. (Michael David), 1942- and Oregon. State Game Commission. Research Division
    Abstract:
    This report the sizes for winter steelhead runs of the Willamette River and many of its tributaries from 1958-69, giving numbers and suggesting possible reasons for small runs.
    Resource Type:
    Technical Report
    Full Text:
    - Tualatin Clackamas Estimated Number of Fish 21 415 345 8,261 /2 4,454 414 5, 499 Percentage

  • Informational report 70-4 (October 1970): harvest of intertidal, non-food invertebrates, 1967

    Creator:
    Osis, Laimons
    Abstract:
    This report summarizes 1967 collecting activities for intertidal non-food invertebrates. It discusses collecting permits issued, number of animals collected, and collecting intensity by area, making frequent comparisons to the 1966 data.
    Resource Type:
    Technical Report
    Full Text:
    % decrease in the number of animals collected as compared to 1966. Of the 162 permits issued, 146 (90

  • The 1976 razor clam fishery

    Creator:
    Link, Terry
    Abstract:
    Razor clam catches from Clatsop beaches (Tillamook Head-Columbia River) were sampled regularly from March through September and periodically the rest of the year. Diggers were interviewed for number and age composition of clams harvested and the distribution and number of diggers. Data from beaches south of Tillamook Head were collected...
    Resource Type:
    Technical Report
    Full Text:
    . Diggers were interviewed fur number and aye composition of clams harvested and the distribution and

  • Spawning fish surveys in coastal watersheds, 1971

    Creator:
    Skeesick, Delbert G.
    Abstract:
    The surveys of spawning fish in coastal rivers in 1971 indicate that stocks of chum salmon remain at a low, although apparently stabilized level. Fluctuations are probably the result of year-class survival and age at maturity, rather than continued decline of the species. The fall chinook index of abundance was...
    Resource Type:
    Technical Report
    Full Text:
    Chinook Per Mile in Standard Survey Areas of Six Coastal Rivers, 19S2-71.............. 8 2 Average Number

  • Ecology and Management of Brown Trout in Little Deschutes River

    Creator:
    Lorz, Harold W. and Oregon Wildlife Commission
    Abstract:
    Project F-82-R Final Report The results of a study to understand the ecological requirements of brown trout and determine the effects of water development and land use on fish populations in the Deschutes River. Abundance, distribution, survival, age, growth, fecundity, food, migrations and ecological relationships to other species were all...
    Resource Type:
    Technical Report
    Full Text:
    Fishery Research Report Number 8 Research Division Oregon Wildlife Commission ECOLOGY AND