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2 edition of Stock assessment of arctic grayling in the Salcha, Chatanika, and Goodpaster rivers during 1992 found in the catalog.

Stock assessment of arctic grayling in the Salcha, Chatanika, and Goodpaster rivers during 1992

William P. Ridder

Stock assessment of arctic grayling in the Salcha, Chatanika, and Goodpaster rivers during 1992

by William P. Ridder

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Published by Alaska Dept. of Fish and Game, Division of Sport Fish in Anchorage, Alaska .
Written in English

    Subjects:
  • Arctic grayling -- Alaska -- Salcha River.,
  • Arctic grayling -- Alaska -- Chatanika River.,
  • Arctic grayling -- Alaska -- Goodpaster River.,
  • Fish populations -- Alaska -- Salcha River.,
  • Fish populations -- Alaska -- Chatanika River.,
  • Fish populations -- Alaska -- Goodpaster River.

  • About the Edition

    Three Arctic grayling Thymallus arcticus populations in the Tanana River drainage were assessed using mark-recapture experiments in 1992. Investigations focused on the estimation of abundance and stock composition. Arctic grayling were captured using pulsed-DC electrofishing. Population abundance estimated for Arctic grayling greater than 200 millimeter fork length in the Salcha River was 7,706 fish (standard error of 2,555 fish) for a density of 209 fish per kilometer. The Chatanika River population was assessed in three contiguous study sections along a 112 km reach of the middle drainage. Each section differed in capture probability, size and age composition, and density. Abundance of fish greater than 150 millimeter fork length was 19,095 fish (standard error of 1,778 fish) and ranged from 271 fish per kilometer in the upstream section to 89 fish per kilometer in the midstream section. Abundance estimated in three sections of the lower 50.0 kilometers of the Goodpaster River was 6,886 fish greater than 150 millimeter fork length (standard error of 809 fish). As in the Chatanika River, capture probabilities, composition, and density differed among sections. Density was highest in the downstream section (192 fish per kilometer) and least in the upstream section (84 fish per kilometer).

    Edition Notes

    Statementby William P. Ridder, Timothy R. McKinley, and Robert A. Clark.
    SeriesFishery data series -- no. 93-11.
    ContributionsMcKinley, Timothy R., Clark, Robert A., Alaska. Division of Sport Fish.
    The Physical Object
    Paginationix, 117 p. :
    Number of Pages117
    ID Numbers
    Open LibraryOL18141594M

    Natural Rivers Zoning District Natural Rivers Vegetative Buffer 1 0 1 Miles Compartment: T27N R03E Sec. , 9, 10 T28N R03E Sec. 34 County: Oscoda Unit: Grayling YOE: Acres: 1, GIS Calculated. Compartment Review Presentation Grayling Forest Management Unit 1, Crawford Management Area: Camp Grayling Rivers A APowerline Compartment Boundary Clearcut (w/Reserves) Regeneration Survey Grayling Water. Grayling

    Gogebic 9 2 1 4 3 5 12 13 11 24 14 26 10 25 36 23 35 15 22 8 16 27 6 21 34 17 28 US-2 L a k e R d Ayer St D a v i s R d J u n e t N R d Sunset Rd Pion er Rd S e c t i o n a 1 2 d R d No rie Park Rd ylun dR V a n. Abstract The influence of electrofishing on egg mortality of Arctic grayling Thymallus arcticus was investigated. The hypothesis that electrofishing affects egg mortality was supported by two experiments. Experiment 1 examined the mortality rate of Arctic grayling eggs from parents that were electroshocked before spawning, and experiment 2 examined mortality rates of eggs that Cited by:

    The impact of earth hummocks on subsurface drainage was studied at three hillslope plots during the snow-free periods of and at a small hummock-covered Arctic tundra watershed (Siksik Creek) in north-western Size: KB. ponderosa pine, referred to as the West-wide levels-of-growing-stock study. The initial objective was to evaluate the long-term effects of density management on tree growth and mortality, but many insights have also been gained into the range of stand structures obtained by varying stand density regime. Ritchie and Harck-Cited by: 5.


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Stock assessment of arctic grayling in the Salcha, Chatanika, and Goodpaster rivers during 1992 by William P. Ridder Download PDF EPUB FB2

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