Spawning Escapement of Okanogan River Blueback Salmon (Oncorhynchus Nerka) 1957 PDF Download
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Author: Donovan R. Craddock
Publisher:
ISBN:
Category : Salmon
Languages : en
Pages : 16
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Author: Donovan R. Craddock
Publisher:
ISBN:
Category : Salmon
Languages : en
Pages : 16
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Author:
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Category : Fish culture
Languages : en
Pages : 660
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Author:
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ISBN:
Category : Fisheries
Languages : en
Pages : 320
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Author:
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ISBN:
Category : Fish culture
Languages : en
Pages : 1276
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Author:
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ISBN:
Category : Fisheries
Languages : en
Pages : 436
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Author: Robert L. Edwards
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ISBN:
Category : Fishes
Languages : en
Pages : 728
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Book Description
Cruise no. 126 of the Albatross III was planned and conducted to gather information about the distribution of fishes across the Continental Shelf from Nantucket Shoals to Cape Hatteras during the late winter period when water temperatures generally are at their minimum. The shelf here has a general hydrographic similarity from north to south, well described by Bigelow (1933), that makes it a particularly worthwhile area in which to study the relation of fish distribution to water temperature, depth, and other factors of the environment. Since the fish of this portion of the shelf support several different, relatively important food and industrial fisheries, as well as an intensive marine sport fishery. Cruise no. 126 served to provide data valuable to several research programs.
Author:
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Category : Fisheries
Languages : en
Pages : 1296
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Author: Charles H. Walburg
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Category : Shad fisheries
Languages : en
Pages : 948
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Author: George Armytage Rounsefell
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Category : Copper sulfate
Languages : en
Pages : 684
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The first large-scale attempt at controlling the red tide was made in the autumn of 1957. About 16 square miles stretching along 32 miles of shoreline from Anclote Key to Pass-a-grille Beach, off St. Petersburg, Florida, were dusted with copper sulfate (CuSO4·5H2O) at about 20 pounds to the acre by crop-dusting planes. The copper very quickly reduced G̲y̲m̲ṉo̲ḏi̲ṉi̲u̲m̲ ḇṟe̲v̲e̲, the red tide organisms, from several million to practically none per liter relieving the area of the respiratory irritation caused by the airborne toxin of G̲. ḇṟe̲v̲e̲. In 2 out of 5 areas the organisms rose again to concentrations lethal to fish in 10 to 14 days after dusting. This method is not recommended for general control, but will give temporary relief in local situations from the airborne toxin
Author: Roland L. Wigley
Publisher:
ISBN:
Category : Benthos
Languages : en
Pages : 670
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