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The detection of fish /
The Detection of Fish is a guide on how to locate fish through the indications of its presence in the area and the use of different acoustic instruments. The book has seven chapters, which cover the different types and locations of fisheries; the evaluation of resources of exploratory fishing; the p...
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Oxford ; New York :
Pergamon Press,
[1973]
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| Edición: | First edition.n]. |
| Colección: | International series of monographs on pure and applied biology. Division, Zoology ;
v. 52. |
| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Front Cover; The Detection of Fish; Copyright Page; Table of Contents; Preface; Acknowledgments; Introduction; CHAPTER 1. WHERE THE FISHERIES LIE; 1. Introduction; 2. Spawning fisheries; 3. Feeding fisheries; 4. Fisheries in boundary conditions; 5. Fisheries in the upwelling areas; 5. The Dome fishery for tuna off equatorial America; 6. The anchoveta fishery off Peru; 7. The evaluation of resources by exploratory fishing; 8. The positions of fisheries; CHAPTER 2. THE INDICATIONS OF FISH; 1. Introduction; 2. Natural detection; 3. Ultrasonic detection; 4. Conclusion.
- CHAPTER 3. SOME ELEMENTARY ACOUSTICS1. Introduction; 2. Sound waves in the sea; 3. The sonar equations; 4. The target strength of fish; 5. The estimation of volume reverberation; 6. The resonance of air bubbles; 7. Calibration of equipment; CHAPTER 4. THE ESTIMATION OF ABUNDANCE WITH AN ECHO SOUNDER; 1. Introduction; 2. Methods of estimating relative abundance; 3. The use of sonar to estimate the relative abundance of fish; 4. The detection of individual fish; 5. The estimation of absolute abundance; 6. The use of low frequency equipment; 7. The correlation of catch and signal.
- 8. The use of the estimate of absolute abundance in fisheries researchCHAPTER 5. THE STUDY OF FISH BEHAVIOR ACOUSTICALLY; 1. Introduction; 2. Diurnal rhythms; 3. The effect of artificial light on shoals of fish; 4. Some specific quantities; 5. The availability of fish to capture; 6. Conclusion; CHAPTER 6. THE DEEP SCATTERING LAYER; 1. Its discovery and early history; 2. The physical investigations; 3. The biological investigations; 4. Some specialized observations; 5. The Deep Scattering Layer; CHAPTER 7. THE USE OF MORE COMPLEX ACOUSTIC INSTRUMENTS; 1. Development of echo sounders.
- 2. Trawl transducers3. Development of traditional sonar; 4. Side-scan sonar; 5. Continuous transmission frequency-modulated sonar (CTFM); 6. Sector scanners; 7. Low frequency equipment; 8. The use of echo sounders and the more complex instruments in fisheries biology; BIBLIOGRAPHY; AUTHOR INDEX; SUBJECT INDEX.