Planktic Foraminifera of the Eastern South Pacific (OBIS, ESPOBIS)Entry ID: cl_udec_copas_foraminiferos_01
Abstract: Seasonal and interannual changes in the flux of planktic foraminifera were studies in the Humboldt Current System off Coquimbo (30°S, 73°,15W), using material collected by time series sediment traps located at 2300 m water depth and 100 nautical miles from the coast. The almost continuous record span 8 years (1991-1998) with a temporal resolution of 6-13 days. Field work was carried out during the ... El Niño event of 1991/1992 (6 months), under normal conditions in 1993/1994 (1 years) and the strong 1997-1998 had only a limited impact on the planktic foraminifer flux. The seasonal fluxpattern of planktic foraminifera was marked by high fluxes during austral late winter-early summer (August-January) and low fluxes during the fall-early winter period (March-July). Five species contributed ca. 90% of the total flux of planktic foraminifers: Globigerina bulloides, Neogloboquadrina incompta, N. pachyderma, N. dutertrei, and Globigerinella calida. The most significant El Niño-related signal was a remarkable increase in the flux and abundance of species that, under normal conditions, only accounted for 10% of the planktic foraminiferal assemblage.
Data Set Citation
Dataset Originator/Creator: Marchant, M.
Dataset Title: Humboldt Current Planktic Foraminifera
Dataset Release Date: 2006
Dataset Release Place: Concepción, CHILE
Dataset Publisher: FONDAP-COPAS
Start Date: 1991-11-07Stop Date: 1998-06-19
Horizontal Resolution Range: 30 meters - < 100 meters
Access Constraints None.
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Data Set Progress
Distribution Media: HTTP
Distribution Format: OBIS Schema
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Email: fgodoyf at udec.cl
Centro FONDAP-COPAS Universidad de Concepción P.O. BOX 160-C
Email: mmarchan at udec.cl
Marchant M., Hebbeln D. & Wefer G (1998). Seasonal flux patterns of planktic foraminifera in the Peru-Chile Current. Deep-Sea Research I (45) 1161-1185.
Marchant M., Hebbeln D., Giglio S., Coloma C. & Gonzalez H (2004). Seasonal and interannual variability in the flux of planktic foraminifera in the Humboldt Current Systen off central Chile (30° S). Deep-Sea Research II (54) 2441-2455.
Coloma C., Marchant M. & Hebbeln D. (2005). Planktonic Foraminifera during El Niño 1997-98 off Coquimbo (30ºs; 73ºw), Chile. Gayana 69(1) 48-77.
Creation and Review Dates
DIF Creation Date: 2007-01-17
Last DIF Revision Date: 2010-11-09