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Record Nr. |
UNINA9910789177203321 |
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Titolo |
Fishing vessel execution of acoustic surveys for deep-sea species : main issues and way forward |
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Pubbl/distr/stampa |
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Rome : , : Food and Agriculture Organization of the United Nations, , 2012 |
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Descrizione fisica |
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1 online resource (105 p.) |
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Collana |
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FAO fisheries and aquaculture circular, , 2070-6065 ; ; no. 1059 |
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Soggetti |
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Underwater acoustics |
Fishing surveys |
Fishery resources |
Fish stock assessment |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Nota di bibliografia |
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Includes bibliographical references. |
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Nota di contenuto |
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""PREPARATION OF THIS DOCUMENT""; ""ABSTRACT""; ""CONTENTS""; ""1. INTRODUCTION AND BACKGROUND""; ""1.1 Introduction""; ""1.2 Background""; ""2. INSTITUTIONAL AND ORGANIZATIONAL ISSUES""; ""2.1 Who this report is intended for""; ""2.2 Why there is an issue""; ""2.3 Strategic and tactical considerations""; ""2.4 Requirements that must be met for stock assessment""; ""3. APPLICATIONS AT SEA AND OPERATIONAL CHALLENGES""; ""3.1 Operational characteristics""; ""3.2 Role of incentives/disincentives""; ""3.3 Integrating surveys with commercial fishing activities""; ""3.4 Echo mark identification"" |
""4. VESSELS AND EQUIPMENT""""4.1 Introduction""; ""4.2 The echosounder""; ""4.3 Frequency considerations""; ""4.4 Choice of vessel""; ""4.5 Location of transducers""; ""4.6 Calibration""; ""4.7 Opportunities for introduction of new technologies""; ""5. SURVEY METHODS""; ""5.1 Strategic considerations""; ""5.3 Area-based surveys""; ""5.4 Multiple surveys""; ""5.5 Deciding which data to use for estimation of abundance""; ""6. ACOUSTIC DATA PROCESSING""; ""7. ACOUSTIC BACKSCATTERING CROSS-SECTION VALUES""; ""7.1 Importance of proper specification"" |
""7.2 Problems associated with use of Ï?b and sv values""""8. ESTIMATION OF ABUNDANCE""; ""8.1 Introduction""; ""8.2 Area-based |
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