Accession Number : ADA182973

Title :   A Survey for Molluscs in the White River Near Newport, Arkansas, 1986.

Descriptive Note : Final rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

Personal Author(s) : Miller,Andrew C ; Harris,John L

PDF Url : ADA182973

Report Date : Jun 1987

Pagination or Media Count : 38

Abstract : A survey for live molluscs and shells was made in the White River, near Newport, Arkansas, river. Molluscs were collected at 12 dredged material disposal sites. Twenty-four species of unionid molluscs, in addition to the Asiatic clam, Corbicula fluminea, were collected alive and seven additional species were found only as shells. The existing fauna is dominated by thick-shelled species, uadrula pustulosa, Fusconaia ebena, Ellipsaria lineolata, Obovaria olivaria, and Obliquaria reflexa. The endangered Potamilus capax and Lampsilis orbiculata were not collected alive; however, relict shells of the latter species were found at seven sites. The mussel fauna in this reach of the river has been stressed by maintenance dredging and to some extent by commercial harvesting and hypolimnetic reservoir releases upriver. However, evidence of recent recruitment was found for 10 species of unionids, many of which were collected in close proximity to previously dredged areas. Keywords: Marine biology; Ecology; Habitat; Ecosystems.

Descriptors :   *MOLLUSCA, *DREDGING, *MARINE BIOLOGY, *ENVIRONMENTAL IMPACT, ARKANSAS, ECOLOGY, STRESSES, CLAMS, ECOSYSTEMS, HABITATS, ANIMALS, MUSSELS, ENDANGERED SPECIES, RIVERS

Subject Categories : Biological Oceanography
      Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE