Artigo Acesso aberto

Benthic macrofauna and ancillary data for San Francisco Bay, California, January to November 1988

1990; United States Department of the Interior; Linguagem: Inglês

10.3133/ofr89596

ISSN

2332-4899

Autores

L.E. Schemel, Allan Y. Ota, J.G. Harmon, J.M. Shay, R.M. Adorador,

Tópico(s)

Marine and fisheries research

Resumo

Benthic macrofauna and ancillary data were collected during 1988 as part of the U.S. Geological Survey Regional Effects Monitoring Program in San Francisco Bay, California.Data were collected during six cruises at 2-month intervals from January to November.Benthic macrofauna for identification and counting of species and sediments for size analysis were collected at eight stations.Temperature, salinity, and concentrations of dissolved oxygen and suspended sediment were measured at 12 stations.Salinity was measured at three stations that coincided with continuous monitoring stations.The percentage of benthic macrofauna specimens that could be identified to the species level varied among sampling stations.Based on annual averages at each station, this percentage ranged from 60 to 95 percent.Three or fewer species represented from 25 to 75 percent of the total number of specimens at all stations.This percentage changed over time, as did the species.The annual average number of species per sample ranged from 4 to 21. Stations in the southern bay were typically higher in number of species and number of specimens per sample than those in the northern bay.The newly introduced species of clam, Potamocorbula amurensis, persisted as an abundant species in the northern bay, and became more abundant at all stations in the southern bay except one.

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