Portal de Periódicos da CAPES

Acoustical Detection of High-Density Krill Demersal Layers in the Submarine Canyons off Georges Bank

1988; American Association for the Advancement of Science; Volume: 241; Issue: 4863 Linguagem: Inglês

10.1126/science.241.4863.359

1095-9203

Charles H. Greene, Peter H. Wiebe, Janusz Burczyñski, Marsh J. Youngbluth,

Marine and fisheries research

High-density demersal layers of krill have been detected in the submarine canyons off Georges Bank by means of a high-frequency, dual-beam bioacoustical technique. Krill densities in these demersal layers were observed to be two to three orders of magnitude greater than the highest densities observed in water-column scattering layers. Such abundances may help explain the unusually high squid and demersal fish production estimates attributed to the Georges Bank ecosystem.