Lipid Composition and Metabolic Activities of Benthic Near-Shore Microbial Communities of Arthur Harbor, Antarctic Peninsula: Comparisons with McMurdo Sound*

• Main Authors: Glen A. Smith, John D. Davis X, Ann M. Muscat, Richard L. Moe, David C. White
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 1988
• Subjects: Antarctic; Antarctic Peninsula; Arthur Harbor; Bor; McMurdo Sound; Antarc*
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.608.6508; http://www.davidcwhite.org/fulltext/216.pdf

Harbor area were described by analysis of their cell membrane phospholipid ester-linked fatty acids (PELFA) and metabolic rates. Analysis revealed a biomass averag-ing 6 nM (phospholipid) or 3.5 x 10 8 cells per gram dry weight (gdw) of sediment for the four sites. Only slight biomass differences were detected between the four penin-sula sites. All Arthur Harbor sites were determined tohave a biomass similar to the lowest amount reported for a previously described McMurdo Sound site at New Har-bor. Community structure based on signature phospholi-pids indicated only slight differences between the four peninsula sites with greater elative amounts of diatom marker lipids at a deeper site. Bacterial biomarker lipids were also determined in relatively equal proportions for the four Arthur Harbor sites with only one site indicating