New Age Determinations in the Atlantic Provinces PDF Download
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Languages : en
Pages :
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Author:
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Category :
Languages : en
Pages :
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Author: S. M. Barr
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 97
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Book Description
Author: Atlantic Geoscience Society
Publisher: [Halifax, N.S.] : Atlantic Geoscience Society
ISBN:
Category :
Languages : en
Pages : 84
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Author: United States. National Marine Fisheries Service
Publisher:
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Category : American plaice
Languages : en
Pages : 144
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Book Description
The successful application of techniques to enhance detection of age marks in biological specimens is of vital importance in fisheries research. This manual documents age determination techniques used by staff at the Woods Hold Laboratory, National Marine Fisheries Service. General information on procedures for preparing anatomical structures is described, together with criteria used to interpret growth patterns and assign ages. Annotated photographs of age structures are provided to illustrate criteria. Detailed procedures are given for the following species: Atlantic herring (Clupea harengus), haddock (Melanogrammus aeglefinus), Atlantic cod (Gadus morhua), pollock (Pollachius virens), silver hake (Merluccius billinearis), red hake (Urophycis chuss), black sea bass (Centropristis striata), weakfish (Cynoscion regalis), Atlantic mackerel (Scomber scombrus), butterfish (Peprilus triacanthus), redfish (Sebastes fasciatus), summer flounder (Paralichthys dentatus), winter flounder (Pseudopleuronectes americanus), witch flounder (Glyptocephalus cynoglossus), American plaice (Hippoglossoides platessoides), yellowtail flounder (Limanda ferruginea), surf clam (Spisula solidissima), and ocean quahog (Artica islandica).
Author: Mohammed Bouabdellah
Publisher: Springer
ISBN: 3319317334
Category : Science
Languages : en
Pages : 585
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Book Description
This volume presents an exhaustive overview of major orebodies and mineral deposits of North Africa. It is intended both for academic researchers and especially for exploration geologists interested in mineral exploration in the northern part of the African continent. Recent changes in the mining laws of most countries in this region have encouraged international mining companies to invest in local mineral industries. Accordingly, this volume will be very useful for these professionals, as well as for researchers in the field of economic geology.
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Category : Deep-sea fishes
Languages : en
Pages : 232
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Author:
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ISBN:
Category : Fisheries
Languages : en
Pages : 966
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Author:
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ISBN:
Category : Geology
Languages : en
Pages : 298
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Author:
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Category : Fisheries
Languages : en
Pages : 1100
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Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251311765
Category : Technology & Engineering
Languages : en
Pages : 196
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Book Description
This handbook provides guidance on methods for use in fish ageing studies. Fish age, among other biological parameters, is one of the most relevant pieces of data to attain sustainable exploitation levels of fishery resources. Indeed, most analytical methods used in stock assessment require knowledge of demographic structure according to age of stocks, as well as to recruitment, growth, maturity, natural mortality, etc., which are strictly linked to information on age and age structure. The handbook was put together to deal with identified gaps – which affect both the precision and the accuracy of estimations – regarding ageing schemes, criteria and methodologies used in preparing calcified structures. It focuses on the general principles that underpin age analysis (assignment of birth date, preparation methods, aging scheme reading and identification of true and false rings). Crucially, it aims to contribute to the establishment of common analysis methods, which can enable better calibration across the diverse institutes involved, thereby improving the quality and reliability of results.
