Migrations and Habitat of the Tuna (Thunnus Thynnus L.) PDF Download
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Author: M. Sella
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 22
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Book Description
Author: M. Sella
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 22
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Book Description
Author: M. Sella
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 24
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Book Description
Author: M. SELLA
Publisher:
ISBN: 9781033925669
Category :
Languages : en
Pages : 0
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Book Description
Author: M. Sella
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 0
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Book Description
Author: U.S. Fish and Wildlife Service
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 56
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Book Description
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 766
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Book Description
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1360
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Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 242
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Book Description
Author: Alexander J. Chester
Publisher:
ISBN:
Category : Atlantic menhaden
Languages : en
Pages : 464
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Book Description
Atlantic menhaden, Brevootia tyrannus, the object of a major purse-seine fishery along the U.S. east coast, are landed at plants from northern Florida to central Maine. The National Marine Fisheries Service has sampled these landings since 1955 for length, weight, and age. Together with records of landings at each plant, the samples are used to estimate numbers of fish landed at each age. This report analyzes the sampling design in terms of probability sampling theory. The design is classified as two-stage cluster sampling, the first stage consisting of purse-seine sets randomly selected from the population of all sets landed, and the second state consisting of fish randomly selected from each sample set. Implicit assumptions of this design are discussed with special attention to current sampling procedures. Methods are developed for estimating mean fish weight, numbers of fish landed, and age composition of the catch, with approximate 95% confidence intervals. Based on specific results from three ports (Port Monmouth, N.J., Reedville, Va., and Beaufort, N.C.) for the 1979 fishing season, recommendations are made for improving sampling procedures to comply more exactly with assumptions of the sampling design. These recommendations include adopting more formal methods for randomizing set and fish selection, increasing the number of sets sampled, considering the bias introduced by unequal set sizes, and developing methods to optimize the use of funds and personnel.
Author:
Publisher:
ISBN:
Category : Deep-sea fishes
Languages : en
Pages : 232
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Book Description
