Add to ORKGAcoustic measurements of the geometric dimensions and packing density of herring, sprat and saithe schools have been conducted by multi-beam sonars and echo integrator systems. Relationships between the reflected echo energy, the estimated school biomass and the school dimensions were established. The relationships seems quite similar for the three species and rather independent of the size of the fish. Seasonal and regional differences in schooling behaviour of herring were detected. School dimension-to-school biomass conversion may be a useful method for abundance estimation of pelagic species, and also for biomass measurements in capture situations
The shape and horizontal extent of herring schools in the North Sea have been mapped by a naval sona...
The packing density and external shape of herring, saithe and sprat schools in the North Sea and al...
Use of horizontal guided sonar in addition to vertical echo sounder may improve biomass estimation o...
Acoustic measurements of the geometric dimensions and packing density of herring, sprat and saithe ...
Acoustic measurements of the geometric dimensions and packing density of herring, sprat and saithe s...
The connections between reflected echo energy and dimensions of fatty herring schools were studied ...
Purse-seining is regarded as one of the most effective methods for capturing migrating pelagic schoo...
The shape and horizontal extent of herring schools in the North Sea have been mapped by a naval son...
A method for acoustic abundance estimation by horizontal guided sonar of fish schooling close to sur...
The connections between reflected echo energy and dimensions of fatty herring schools were studied ...
Int. Symp. on Fisheries Acoustics, Seattle, WA (USA), 22-26 Jun 1987Horizontal dimensions and swimmi...
Biases in the measurements of spatial distribution of fish schools and their consequences for school...
Use of horizontal guided sonar in addition to vertical echo sounder may improve biomass estimation o...
Abstract A method for acoustic abundance estimation by horizontal guided sonar of fish schooling clo...
The swimming behaviour and horizontal dimensions of mackerel schools have been quantified by use of...
The shape and horizontal extent of herring schools in the North Sea have been mapped by a naval sona...
The packing density and external shape of herring, saithe and sprat schools in the North Sea and al...
Use of horizontal guided sonar in addition to vertical echo sounder may improve biomass estimation o...
Acoustic measurements of the geometric dimensions and packing density of herring, sprat and saithe ...
Acoustic measurements of the geometric dimensions and packing density of herring, sprat and saithe s...
The connections between reflected echo energy and dimensions of fatty herring schools were studied ...
Purse-seining is regarded as one of the most effective methods for capturing migrating pelagic schoo...
The shape and horizontal extent of herring schools in the North Sea have been mapped by a naval son...
A method for acoustic abundance estimation by horizontal guided sonar of fish schooling close to sur...
The connections between reflected echo energy and dimensions of fatty herring schools were studied ...
Int. Symp. on Fisheries Acoustics, Seattle, WA (USA), 22-26 Jun 1987Horizontal dimensions and swimmi...
Biases in the measurements of spatial distribution of fish schools and their consequences for school...
Use of horizontal guided sonar in addition to vertical echo sounder may improve biomass estimation o...
Abstract A method for acoustic abundance estimation by horizontal guided sonar of fish schooling clo...
The swimming behaviour and horizontal dimensions of mackerel schools have been quantified by use of...
The shape and horizontal extent of herring schools in the North Sea have been mapped by a naval sona...
The packing density and external shape of herring, saithe and sprat schools in the North Sea and al...
Use of horizontal guided sonar in addition to vertical echo sounder may improve biomass estimation o...