Study of biological processes on the US North Atlantic slope and rise. Volume 2. Final report. Report for November 1984-November 1986

Technical Report · Tue Dec 15 04:00:00 EST 1987

OSTI ID:6946053

Maciolek, N; Grassle, J F; Hecker, B; Brown, B; Blake, J A

Temporal and spatial variations in infaunal community structure, sediment texture, and concentrations of total organic carbon, hydrogen, nitrogen, and hydrocarbons in sediments were sampled at 14 stations six times between November 1984 and July 1986. Megafaunal populations were studied along a transect near the U.S./Canadian boundary, a second transect to the west, and along the 2100-m isobath near Lydonia Canyon. The fauna appears to change along depth gradients. These stations are dominated by large-bodied infaunal sipunculans and aplacophoran molluscs. Metazoan epifauna is sparse on the mid-slope of the western transect, but the densities of giant protozoans peak at these depths. Recolonization experiments indicate slow rates of recovery of disturbed environments.

• Research Organization: Battelle Ocean Sciences, Duxbury, MA (USA)
• OSTI ID: 6946053
• Report Number(s): PB-88-196514/XAB
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020900 -- Petroleum-- Environmental Aspects
03 NATURAL GAS
030800 -- Natural Gas-- Environmental Aspects
520100* -- Environment
Aquatic-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
ANIMALS
AQUATIC ORGANISMS
ATLANTIC OCEAN
BASELINE ECOLOGY
CONTINENTAL MARGIN
DOCUMENT TYPES
DRILLING
ECOLOGY
GEOLOGIC DEPOSITS
INVERTEBRATES
MICROORGANISMS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NUTRIENTS
OFFSHORE DRILLING
PARTICLE SIZE
PETROLEUM DEPOSITS
POLLUTION
POPULATIONS
PROGRESS REPORT
PROTOZOA
RECOVERY
RESOURCES
SAMPLING
SEAS
SEDIMENTS
SIZE
SURFACE WATERS
WATER POLLUTION