A generalized TS-duration relationships was applied in order to estimate fish proportions

A generalized TS-duration relationships was applied in order to estimate fish proportions

Acoustic investigation was in fact gathered regarding the NOAA Boat Nancy Promote within the echosounder working from the step 3 wavelengths (38, 120, 2 hundred kHz). Heart circulation length is set to 128 ?s into 120 kHz and you will 200 kHz and you may 256 ?s for the 38 kHz. We surveyed a maximum of 7 programs at for each and every station a keen acoustic survey try constant six minutes over 24 hours (pre-dawn, post-start, day, pre-dusk, post-dusk, nighttime; everything 1.5 times for each questionnaire). The fresh new survey construction contains 7 parallel transects step 1 nm (1.852 kilometer) a lot of time and you can spread 50 yards apart (Fig step one). (more…)

Continue ReadingA generalized TS-duration relationships was applied in order to estimate fish proportions