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
Purse-seining is regarded as one of the most effective methods for capturing migrating pelagic schoo...
The packing density and external shape of herring, saithe and sprat schools in the North Sea and alo...
Int. Symp. on Fisheries Acoustics, Seattle, WA (USA), 22-26 Jun 1987Horizontal dimensions and swimmi...
Acoustic measurements of the geometric dimensions and packing density of herring, sprat and saithe s...
Acoustic measurements of the geometric dimensions and packing density of herring, sprat and saithe ...
The connections between reflected echo energy and dimensions of fatty herring schools were studied ...
The connections between reflected echo energy and dimensions of fatty herring schools were studied ...
The shape and horizontal extent of herring schools in the North Sea have been mapped by a naval sona...
A method for acoustic abundance estimation by horizontal guided sonar of fish schooling close to sur...
Horizontal dimensions and swimming and avoidance behaviour of herring schools were quantified by mea...
Biases in the measurements of spatial distribution of fish schools and their consequences for school...
Abstract A method for acoustic abundance estimation by horizontal guided sonar of fish schooling clo...
The packing density and external shape of herring, saithe and sprat schools in the North Sea and al...
A model is developed and demonstrated for simulating echosounder and sonar observations of fish scho...
The shape and horizontal extent of herring schools in the North Sea have been mapped by a naval son...
Purse-seining is regarded as one of the most effective methods for capturing migrating pelagic schoo...
The packing density and external shape of herring, saithe and sprat schools in the North Sea and alo...
Int. Symp. on Fisheries Acoustics, Seattle, WA (USA), 22-26 Jun 1987Horizontal dimensions and swimmi...
Acoustic measurements of the geometric dimensions and packing density of herring, sprat and saithe s...
Acoustic measurements of the geometric dimensions and packing density of herring, sprat and saithe ...
The connections between reflected echo energy and dimensions of fatty herring schools were studied ...
The connections between reflected echo energy and dimensions of fatty herring schools were studied ...
The shape and horizontal extent of herring schools in the North Sea have been mapped by a naval sona...
A method for acoustic abundance estimation by horizontal guided sonar of fish schooling close to sur...
Horizontal dimensions and swimming and avoidance behaviour of herring schools were quantified by mea...
Biases in the measurements of spatial distribution of fish schools and their consequences for school...
Abstract A method for acoustic abundance estimation by horizontal guided sonar of fish schooling clo...
The packing density and external shape of herring, saithe and sprat schools in the North Sea and al...
A model is developed and demonstrated for simulating echosounder and sonar observations of fish scho...
The shape and horizontal extent of herring schools in the North Sea have been mapped by a naval son...
Purse-seining is regarded as one of the most effective methods for capturing migrating pelagic schoo...
The packing density and external shape of herring, saithe and sprat schools in the North Sea and alo...
Int. Symp. on Fisheries Acoustics, Seattle, WA (USA), 22-26 Jun 1987Horizontal dimensions and swimmi...