Accession Number : AD0706053

Title :   THE RELATIONSHIPS BETWEEN WATER MASSES AND EUPHAUSIIDS IN THE GULF OF CALIFORNIA AND THE EASTERN TROPICAL PACIFIC.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Mundhenke,David Jerome

Report Date : OCT 1969

Pagination or Media Count : 118

Abstract : The object of this investigation was to determine the relationships between the euphausiid populations and the surface and subsurface water masses in the Gulf of California and the Eastern Tropical Pacific. The data was collected during two three month cruises of the R/V TE VEGA. Aspects of the horizontal and vertical distributions of both the euphausiids and the water masses are presented. Euphausiid distributions found by another investigator are presented for comparison. The study was based on 120 trawls which fished for a period of one hour each with an opening and closing Tucker midwater trawl. Thirteen different species of euphausiids were caught. The data suggests that there is no direct relationship between the distribution of euphausiids and the distribution of water masses in the limited area considered. New extensions of the horizontal and vertical ranges of several species of Pacific euphausiids are included. (Author)

Descriptors :   (*OCEAN CURRENTS, CALIFORNIA), (*PLANKTON, DISTRIBUTION), TEMPERATURE, SALINITY, OCEANOGRAPHIC SHIPS, SEA WATER, UNDERWATER SOUND, SCATTERING, MARINE BIOLOGICAL NOISE, THESES, GULFS, TROPICAL REGIONS, PACIFIC OCEAN

Subject Categories : Biological Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE