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Antarctic Research Series

 

Keywords

  • Ecology—Research—Antarctica—Antarctic Peninsula Region

Index Terms

  • 4815 Oceanography: Biological and Chemical: Ecosystems, structure and dynamics
  • 4806 Oceanography: Biological and Chemical: Carbon cycling
  • 4207 Oceanography: General: Arctic and Antarctic oceanography

Article

ANTARCTIC RESEARCH SERIES, VOL. 70, PP. 303-332, 1996

Microbiological oceanography in the region west of the Antarctic Peninsula: Microbial dynamics, nitrogen cycle and carbon flux

David M. Karl

SOEST, Department of Oceanography, University of Hawaii, Honolulu, Hawaii


James R. Christian

SOEST, Department of Oceanography, University of Hawaii, Honolulu, Hawaii


John E. Dore

SOEST, Department of Oceanography, University of Hawaii, Honolulu, Hawaii


Ricardo M. Letelier

College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon


Microorganisms are ubiquitous in Southern Ocean habitats and play a vital role in production and transformation of organic matter. Compared to other coastal and oceanic habitats, however, microbial processes in antarctic marine habitats are poorly understood. One major reason is the spatially and temporally variable nature of the habitat and the general inaccessibility of selected habitats (e.g., multi-year pack ice in austral winter). Despite these limitations, the region west of the Antarctic Peninsula is beginning to provide an opportunity for year-round field investigations. Progress to date has focused on the role of microorganisms in the biogeochemical cycling of carbon and associated elements, the regulation of bacterial populations and the relationships between primary production and particulate matter export from the euphotic zone. The emergent patterns of carbon and energy flow and of microbial population interactions comprise a prospectus and a challenge for future studies in this region.

Citation: Karl, D. M., J. R. Christian, J. E. Dore, and R. M. Letelier (1996), Microbiological oceanography in the region west of the Antarctic Peninsula: Microbial dynamics, nitrogen cycle and carbon flux, in Foundations for Ecological Research West of the Antarctic Peninsula, Antarct. Res. Ser., vol. 70, edited by E. E. Hofmann, R. M. Ross, and L. B. Quetin, pp. 303–332, AGU, Washington, D. C., doi:10.1029/AR070p0303.

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