Schools detection module
The Schools detection module allows you to detect and analyze fish schools (shoals) in echograms.
This includes:
- Behavioral studies of school distribution and schooling behavior is facilitated by the automated ability to detect schools in acoustic data and can be used to examine schools at the high level of temporal and spatial resolution inherent to acoustic data.
- Investigations into the acoustic identification of schools to species, which substantially increases the accuracy of the process of partitioning measurements of back-scattered energy among species. This constitutes an important improvement over species-allocation based solely on trawling and/or visual scrutiny, and ultimately allows fishers to capture only schools of target species in those fisheries, thus allowing limited by-catch.
The detection and integration of individual schools should allow school-by-school estimates of biomass, which may represent an improvement over estimates of biomass based on mean biomass per EDSU.
When this module is licensed but other modules are not licensed, restricted and/or time limited Echoview features from other modules are available under demonstation mode.
Please contact sales@echoview.com for information about this module's pricing and prerequisites.
4D visualization of single beam data can reveal further spatial and time relationships.
Specific features
- Calculation of 30 morphometric and density parameters of detected fish schools and manually defined regions.
- Analysis of detected schools yields extensive parameter sets that can used as features for the purpose of classifying schools by species and age.
- Detection can be applied when live-viewing data or at the post-processing stage. Following a detection, classification with rules can be applied.
Notes:
- For the purposes here, the term 'school' refers to an 'acoustic school', as an acoustically unresolved, multiple fish or plankton aggregation (sensu Kieser et al. 1993), and is not intended to differentiate between 'schools' and 'shoals', as defined by Pitcher and Parrish (1993).
- The Schools detection module is not required for 3D schools detection.
See also
Using the Schools module
About detecting schools
Schools analysis variables
Module prerequisites
About Echoview modules
Schools module references
Licenses and demonstration mode
Operator licensing in Echoview