Macrobenthic species of the Eastern South Pacific (OBIS South America, SOUTH PACIFIC NODE) ...

• Main Author: Registry-Migration.Gbif.Org
• Format: Dataset
• Language: unknown
• Published: Ocean Biogeographic Information System 2015
• Subjects: Antarc*; Antarctic
• Online Access: https://dx.doi.org/10.15468/gjtlz6; http://www.gbif.org/dataset/83b7d732-f762-11e1-a439-00145eb45e9a

"Macrobenthic species of the Eastern South Pacific" In response to the characteristics of the various water masses involved, diverse soft-bottom communities occur under the Hulboldt Current System. While the shelf exhibits communities dominated by a variety of eukaryotes living under the oxic sub-Antarctic waters, beneath it a very diverse prokaryote-dominated system is found, in particular during the long inter-El Niño periods, under the hypoxic Sub-equatorial waters and within sulfide-rich sediments. Further down, normoxic Intermediate and Pacific Deep waters allow for a most varied benthic fauna where oasis of methane-seep dependent communities are also found. The collections here reported originate from samples taken during the development of FONDECYT Project 950001 (1996-97), the "MinOx" Cruise (Oxygen Minimum Zone cruise) to northern Chile of March 2000 and the German SONNE (PUCK) Expedition of 2001 along the Chilean margin (20 – 42o) and in the range of 20-2000m. Polychaeta was the numerically ...