Some aspects of the small scale distribution of Euphausia crystallorophias

Everson, Inigo. 1987 Some aspects of the small scale distribution of Euphausia crystallorophias. Polar Biology, 8 (1). 9-15.

Full text not available from this repository. (Request a copy)


Diurnal variations in the vertical distribution and swarming behaviour of Euphausia crystallorophias at Deception Island (61 degrees South, 66 degrees West) are described. Swarms were present at all times of the day and night. By day swarms were compact and deep, they were dispersed and neared to the surface by night. Significant net avoidance was noted by day. A twenty-fold discrepancy was found between abundance estimated from net hauls and acoustics. This difference is almost certainly because currently used Target Strength (TS) to size relationships overestimate TS and consequently undersetimate euphausiid biomass.

Item Type: Publication - Article
Digital Object Identifier (DOI):
ISSN: 0722-4060
Additional Keywords: biomass, vertical distribution, diurnal variation, acoustics
Date made live: 28 Mar 2019 11:35 +0 (UTC)

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...