Modernizing fisheries surveys without breaking the time series means running old and new methods together
WHAT THE EVIDENCE SAYS
A peer-reviewed review examines how eDNA, imaging, autonomous platforms and acoustic systems can augment fisheries-independent surveys. The authors emphasize overlapping old and new methods, explicit calibration and uncertainty propagation so technological change does not create an artificial ecological break in a long-term monitoring series.
WHY IT MATTERS / OUR READ
Monitoring programs are infrastructure. A new sensor can be better in many ways and still damage the evidence base if it is introduced without enough overlap to separate real ecological change from method change.
CAVEATS / UNCERTAINTY
This is a methodological roadmap and review, not a field trial showing one replacement technology improves all surveys. Performance and cost depend on species, habitat, sensor, vessel constraints and survey objectives, so modernization needs system-specific validation.
SOURCE
ICES Journal of Marine Science
View original evidence ↗
NOAA Fisheries
View supporting source ↗
A survey-modernization roadmap argues that eDNA, imagery, autonomous vehicles and acoustics should be calibrated against legacy methods before they replace any long-running baseline.
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