Aquatic Habitat Monitoring and Mapping: Digital ... - BioSonics, Inc
Aquatic Habitat Monitoring and Mapping: Digital ... - BioSonics, Inc
Aquatic Habitat Monitoring and Mapping: Digital ... - BioSonics, Inc
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AQUASON<br />
5th International Symposium on Ecohydraulics 2004 – <strong>Aquatic</strong> <strong>Habitat</strong>s: Analysis & Restoration<br />
12 th -17<br />
th September, Madrid, Spain<br />
Case study: Reservoirs<br />
• 9 reservoirs studied in Spain from 2001-2003<br />
2003<br />
• vertical beaming (echocounting) in all reservoirs<br />
• additionally horizontal beaming since 2002<br />
• most reservoirs present typical layering in summer<br />
• usually only upper 10m habitable for fish in summer<br />
• horizontal beaming accounts for acoustically “dead<br />
zone” in first meters of beam
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