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 00:00:00 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
• Resource Relation: Other Information: See also PB--88-196522
• Country of Publication: United States
• Language: English

Related Subjects

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