Production and fate of copepod fecal pellets across the Southern Indian Ocean

• Published in: Marine biology 2011-03, Vol.158 (3), p.677-688
• Main Authors: Møller, Eva Friis, Borg, Christian Marc Andersen, Jónasdóttir, Sigrún H., Satapoomin, Suree, Jaspers, Cornelia, Nielsen, Torkel Gissel
• Format: Article
• Language: English
• Subjects: Animal and plant ecology; Animal, plant and microbial ecology; Aquatic life; Biological and medical sciences; Biomedical and Life Sciences; Copepoda; Copepods; Crustacea; Feces; Freshwater & Marine Ecology; Fundamental and applied biological sciences. Psychology; Impact analysis; Invertebrates; Life Sciences; Marine; Marine & Freshwater Sciences; Marine biology; Microbiology; Oceanography; Oncaea; Original Paper; Physiological aspects; Sea water ecosystems; Studies; Surface water; Synecology; Vertical distribution; Water column; Zoology
• ISSN: 0025-3162; 1432-1793
• DOI: 10.1007/s00227-010-1591-5

The vertical distribution of copepods, fecal pellets and the fecal pellet production of copepods were measured at seven stations across the Southern Indian Ocean from productive areas off South Africa to oligotrophic waters off Northern Australia during October/November 2006. We quantified export of copepod fecal pellet from surface waters and how much was retained. Furthermore, the potential impact of Oncaea spp. and harpacticoid copepods on fecal pellets degradation was evaluated and found to be regional substantial. The highest copepod abundance and fecal pellet production was found in the western nutrient-rich stations close to South Africa and the lowest at the central oligotrophic stations. The in situ copepod fecal pellet production varied between 1 and 1,000 μg C m −3 day −1 . At all stations, the retention of fecal pellets in the upper 400 m of the water column was more than 99% and the vertical export of fecal pellets was low (