Accession Number:

ADA279830

Title:

Chronic Sublethal Effects of San Francisco Bay Sediments on Nereis (Neanthes) arenaceodentata; Effect of Storage Time on Sediment Toxicity

Descriptive Note:

Final rept.

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

Personal Author(s):

Report Date:

1994-04-01

Pagination or Media Count:

58.0

Abstract:

This report was designed to address concerns regarding the effect of sediment storage time on toxicity. To this end, seven San Francisco Bay area sediments and a clean control sediment were evaluated in chronic sublethal tests with the marine polychaete worm Nereis Neanthes arenaceodentata. Juvenile worms 2 to 3 weeks postemergence were exposed for 21 days. Test end points were survival and growth. Sediment toxicity was evaluated initially within 30 days of collection and at different points over time up to 2 years after collection. All San Francisco Bay area sediments were composites of several cores taken to project depth 38 ft 11.6 m below mean low water mark from a specific area. Reference sediments were collected from three potential in-bay disposal areas on the mound at the Alcatraz disposal site, surrounding areas adjacent to the mound, the Bay Farm Borrow Pit in South Bay, and from an area outside the bay, Point Reyes PRR. Project sediments were collected from three areas in Oakland Harbor Oakland Inner Harbor OI Oakland Outer Harbor OO and from areas of OI known to be contaminated with metals and polyaromatic hydrocarbons, Oakland Contaminated OC. The control sediment is used in our laboratory cultures of N. arenaceodentata and was collected from Sequim, WA. Chronic, Neanthes, Sublethal, Growth, Sediment.

Subject Categories:

  • Seismology
  • Civil Engineering
  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE