Distribution of planktonic foraminera over Santa Catalina basin

Includes bibliographical references (pages 35-37)Foraminiferal concentration above the Santa Catalina Basin was low at the surface and increased with depth to a maximum concentration at 25 to 75 m. The concentration decreased below 75 m to a minimum at 120 m and remained low at greater depth. The concentrations and species present changed with the seasons. Highest Concentrations were present in January, 1963, and February, 1964, with the lowest numbers present in August, 1963, and October 1963. The peak in numbers of cold water species occurred in, January, l963, while that for warm-water species occurred in August, 1963. (See more in text.