BIOGEOGRAPHICAL AND ECOLOGICAL FACTORS CONTRIBUTING TO THE DECLINE OF ARCTIC GRAYLING, THYMALLUS ARCTICUS (PALLAS), IN MICHIGAN AND MONTANA. PDF Download
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Author: ROBERT EARL VINCENT
Publisher:
ISBN:
Category :
Languages : en
Pages : 378
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Book Description
Author: ROBERT EARL VINCENT
Publisher:
ISBN:
Category :
Languages : en
Pages : 378
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Book Description
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 454
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Book Description
Author: University of Michigan. Board of Regents
Publisher:
ISBN:
Category :
Languages : en
Pages : 1608
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Book Description
Author: Andrew J. Nuhfer
Publisher:
ISBN:
Category : Arctic grayling
Languages : en
Pages : 50
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Book Description
Author: University of Michigan. Board of Regents
Publisher:
ISBN:
Category :
Languages : en
Pages : 1440
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Book Description
Author: United States. Committee on Rare and Endangered Wildlife Species
Publisher:
ISBN:
Category : Rare animals
Languages : en
Pages : 336
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Book Description
Author:
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 1014
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 302
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Book Description
Author: United States. Office of Endangered Species and International Activities
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 316
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Book Description
Author: M. R. Falk
Publisher: sWinnipegt : Lake Management Section, Fishery Management Division, Resource Management Branch, Fisheries Operations Directorate, Central Region, Fisheries and Marine Service, Department of the Environment
ISBN:
Category : Arctic char fishing
Languages : en
Pages : 44
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Book Description
During the summers of 1972 and 1973 a creel census and sampling program was carried out for Arctic grayling caught in the Brabant Island area of Great Slave Lake, Northwest Territories. Growth in length and weight was similar for both samples but grayling from the present study consistantly averaged less in weight at any given age. In view of the decrease in the average length and age, the encroachment of the modal age to that of first sexual maturity and the susceptibility of grayling to overfishing the spawning segment of the Brabant Island grayling population must be protected. A minimum size limit of 14 inches is proposed for the outlet of Great Slave Lake from 116 deg to 118 deg longtitude as well as for the drainages entering this region.
