Record Display for the EPA National Library Catalog

RECORD NUMBER: 382 OF 636

OLS Field Name OLS Field Data
Main Title Macrobenthos of the Pamlico River Estuary, North Carolina.
Author Tenor, Kenneth R. ;
CORP Author North Carolina Water Resources Research Inst., Raleigh.
Year Published 1970
Report Number 40; OWRR-B-004-NC; B-004-NC(8),; 04540
Stock Number PB-197 591
Additional Subjects ( Benthos ; Estuaries) ; ( Ecology ; Estuaries) ; ( Water pollution ; Ecology) ; Rivers ; North Carolina ; Environments ; Salinity ; Temperature ; Oxygen ; Biomass ; Sediments ; Anoxia ; Food chains ; Seasonal variations ; Sewage ; Organic compounds ; Biochemical oxygen demand ; Aquatic animals ; Aquatic plants ; Sediments ; Pamlico River
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-197 591 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 127p
Abstract
A study of the macrobenthos and its environment in the Pamlico River estuary, North Carolina, included measurements of salinity, temperature, and dissolved oxygen, as well as the particle size and organic matter concentrations of the sediments. Salinity ranged from 1 to 20 o/oo, and temperature from 5 to 31C. Anoxic conditions in the bottom water overlying the deeper portions of the estuary occurred in the late summer. A preliminary sampling program in July, 1968 showed that the macrobenthos had both low diversity and low density because of harsh environmental conditions of salinity and sediment composition. On the basis of trellis diagrams, the estuary was divided into three areas: (1) an oligohaline zone dominated by Rangia cuneata and Nereis succinea, (2) a mesohaline zone with a Macoma balthica-Heteromastus filiformis-Nereis succinea association, and (3) a polyhaline zone at the mouth of the estuary characterized by a Macoma phenax-Mulinia lateralis-Glycera dibranchiata association. A seasonal sampling program, using transects located in these communities, showed vast seasonal changes in species composition, range of distribution, density, and community delimitation caused by the new set of planktonic larvae in the estuary. (Author)