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Pressure tolerance of oceanic flagellates: implications for remineralization of organic matter
Turley, C.M.; Carstens, M. (1991). Pressure tolerance of oceanic flagellates: implications for remineralization of organic matter. Deep-Sea Res. Pt. A: Oceanogr. Res. Pap. A: Oceanogr. Res. Pap 38(4): 403-413
In: Deep-Sea Research, Part A. Oceanographic Research Papers. Pergamon: Oxford. ISSN 0198-0149, more
Peer reviewed article  

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    Biogeochemistry; Flagellates; High pressure effects; Marine environment; Mineralization; Organic matter; Population dynamics; Pressure effects; Reproduction; Vertical distribution; Marine

Authors  Top 
  • Turley, C.M.
  • Carstens, M.

    Active growth of the total mixed flagellate population, comprising three species isolated from the euphotic zone in the northeast Atlantic, occurred up to pressures of 200 atm. (equivalent to 2000 m water depth). At pressures greater than 200 atm. there was a steady decrease in total flagellate numbers. These results could be misinterpreted to conclude that pressures greater than 200 atm. have a deleterious effect on flagellates. When the effects of pressure were investigated at the species level a different picture emerges. One species, Paraphysomonas butcheri, was weakly barotolerant reproducing at up to 100 atm. Another, Bodo curvifilus, had a wide barotolerance dividing at up to pressures of 300 atm., while the third, a Cercomonas -like species, only grew at pressures of 300 atm. and over. Such results indicate the importance of investigations at the species level as well as population level.

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