Two Year Time-Series Fluxes of Silicoflagellates and 'Actiniscus': Size Fractioned Results from Subarctic Pacific Station PAPA, 1982-1984

摘要

A seasonal flux study of silicoflagellates and Actiniscus was conducted at subarctic Pacific Stations PAPA (50 N, 145 W; water depth 4200 m) during September, 1982 through August, 1984 using PARFLUX time series sediment traps deployed at 1000 m and 3800 m depths. The time series sediment trap samples were collected for 4- to 16-day periods depending on the samples; most of the samples were collected for 14- to 16-day periods. A total of 47 continuous samples represents nearly a two-year record of the fluxes of silicoflagellate and Actiniscus taxa at 3800 m depth. An additional 12 samples from 1000 m represent a continuous 6-month period which provides a pair of samples from two depths of each time series. Analysis of the paired samples is essential to understand particle sinking processes. Seven silicoflagellate taxa, several additional variants of silicoflagellates, and Actiniscus pentasterias group were enumerated, based on a census of four wet sieved size fractions: 250-1000 micrometers, 125-250 micrometers, 63-125 micrometers, and