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 Ni?o 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 Ni?o-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: Concepci?n, CHILE
Dataset Publisher: FONDAP-COPAS
Start Date: 1991-11-07Stop Date: 1998-06-19
Horizontal Resolution Range: 30 meters - < 100 meters
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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 Ni?o 1997-98 off Coquimbo (30?s; 73?w), Chile. Gayana 69(1) 48-77.
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Creation and Review Dates
DIF Creation Date: 2007-01-17
Last DIF Revision Date: 2016-11-18