Abstract
We determined biomass and activity of microbial plankton across the Polar Front (PF) in Drake Passage during January 1994. Temperature was around 0°C south and between 3 and 5°C north of the PF. Both biomass and activities of microorganisms were significantly lower in the Antarctic waters south of the PF than in the sub-Antarctic waters north of it. Thus, values of chlorophyll a, integrated between 0 and 200 m, reached 150 mgm−2 north, but only 25 mg m−2 south of the PF. Likewise, bacteria varied between 1014 and 4×1013 cells m−2. However, the abundance of heterotrophic nanoflagellates was extremely low throughout Drake Passage (around 3×1010 cells m−2). Bacterial doubling times were long (mean of 25 days). Bacterivory was estimated from the abundance of predators and prey and from temperature. The grazing impact on bacterioplankton biomass was insignificant (less that 0.05% per day) and low on bacterial heterotrophic production (15% per day). Neither biomass nor the activities of microorganisms were found to increase at the PF. The microbial food web was uncoupled and the bacteria did not seem to be controlled by predation.
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References
Azam F, Ammerman JW, Cooper N (1981) Bacterioplankton distributional patterns and metabolic activities in the Scotia Sea. Antarct J US 16:164–165
Biddanda B, Benner R (1994) High frequency of dividng cells in deep-sea bacteria: potential for estimating bacterial growth rates in the ocean's interior. Abstracts ASLO Ocean Sciences Meeting, p 28 America Soc. Limnol. Oceanogr.
Bird DF, Karl DM (1990) RACER: bacterial growth, abundance, and loss due to protozoan grazing during the 1989 spring bloom. Antarct J US 25:156–157
Børheim KY, Bratbak G (1987) Cell volume to cell carbon conversion factors for a bacterivorousMonas sp. enriched from seawater. Mar Ecol Prog Ser 36:171–175
Choi JW, Peters F (1992) Effects of temperature on two psychrophilic ecotypes of a heterotrophic nanoflagellate,Paraphysomonas imperforata. Appl Environ Microbiol 58:593–599
Deacon GER (1982) Physical and biological zonation in the Southera Ocean. Deep Sea Res 29:1–15
El-Sayed SZ (1988) Seasonal and interannual variabilities in Antarctic phytoplankton with reference to krill. In: Sahrhage D (ed) Antarctic Ocean and resources variability. Springer, Berlin Heidelberg New York, pp 101–119
Fry IC (1990) Direct methods and biomass estimation. In: Grigorova R, Morris JR (eds) Techniques in microbial ecology, methods in microbiology, vol 22. Academic Press, London, pp 41–85
Furhman JA, Azam F (1980) Bacterioplankton secondary production estimates for coastal waters of British Columbia, Antarctica, and California. Appl Environ Microbiol 39:1085–1095
Hagström A, Larsson U, Hörstedt P, Normark S (1979) Frequency of dividing cells, a new approach to the determination of bacterial growth rates in aquatic environments. Appl Environ Microbiol 37:805–812
Hansen RB, Eowery HK (1983) Nucleic acid synthesis in oceanic microplankton from the Drake Passage, Antarctica: evaluation of steady-state growth. Mar Biol 73:79–89
Hanson RB, Lowery HK (1985) Spatial distribution, structure, biomass, and physiology of microbial assemblages across the Southern Ocean frontal zones during the late austral winter. Appl Environ Microbiol 49:1029–1039
Hanson RB, Shafer D, Ryan T, Pope DH, Lowery HK (1983a) Bacterioplankton in Antarctic ocean waters during late austral winter: abundance, frequency of dividing cells, and estimates of production. Appl Environ Microbiol 45:1622–1632
Hanson RB, Lowery HK, Shafer D, Sorocco R, Pope DH (1983b) Microbes in Antarctic waters of the Drake Passage: vertical patterns of substrate uptake, productivity and biomass in January 1980. Polar Biol 2:179–188
Holm-Hansen O (1969) Determination of microbial biomass in ocean profiles. Limnol Oceanogr 14:740–747
Holm-Hansen O, El-Sayed SZ, Franceschini GA, Cuhel RL (1977) Primary production and the factors controlling phytoplankton growth in the Southern Ocean. In: Llano GA (ed) Adaptations within Antarctic ecosystems. Proc Third SCAR Symp Antarctic biology. Gulf, Houston. Tex, pp 11–50
Karl DM (1993) Microbial processes in the Southern Oceans. In: Friedman EI (ed) Antarctic microbiology. Wiley, New York, pp 1–63
Karl DM, Holm-Hansen O, Taylor GT, Tien G, Bird DF (1991) Microbial biomass and productivity in the western Bransfield Strait, Antarctica during the 1986–87 austral winter. Deep Sea Res 38:1029–1055
Kirchman DL (1992) Incorporation of thymidine and leucine in the subarctic Pacific: application to estimating bacterial production. Mar Ecol Prog Ser 82:301–309
Kirchman DL (1993) Leucine incorporation as a measure of biomass production by heterotrophic bacteria. In: Kemp PF, Sherr BF, Sherr EB, Cole JJ (eds) Handbook of methods in aquatic microbial ecology. Lewis, Boca Raton, Fla, pp 509–512
Kogure K, Fukami K, Simidu U, Taga N (1986) Abundance and production of bacterioplankton in the Antarctic. Mem Natl Inst Polar Res, Spec Issue 40:414–422
Kottmeier ST, McGrath-Grossi S, Sullivan CW (1987) Sea ice microbial communities. VIII. Bacterial production in annual sea ice of McMurdo Sound, Antarctica. Mar Ecol Prog Ser 35:175–186
Kriss AE (1973) Quantitative distribution of heterotrophic bacteria in the Drake Passage. Microbiology 41:648–652
Letelier RM, Karl DM (1989) Phycoerythrin-containing cyanobacteria in surface waters of the Drake Passage. Antarct J US 24:185–188
Lutjeharms JRE. Walters NM, Allanson BR (1985) Oceanic frontal systems and biological enhancement. In: Sigfried WR, Condy PR, Laws RM (eds) Antarctic nutrient cycles and food webs. Springer, Berlin Heidelberg New York, pp 11–21
Morita RY, Griffiths RP, Hayasaka SS (1977) Heterotrophic activity of microorganisms in Antarctic waters. In: Llano GA (ed) Adaptations within Antarctic ecosystems. Proc Third SCAR Symp Antarctic Biology, Smithsonian Institution, Washington DC, pp 99–113
Nowlin WD Jr, Klinck JM (1986) The physics of the antarctic circumpolar current. Rev Geophys 24:469–491
Parsons TR, Morita Y, Lalli CM (1984) A manual of chemical and biological methods for seawater analysis. Pergamon Press, Oxford
Pedrós-Alió C, Newell SY (1989) Microautoradiographic study of thymidine uptake in brackish waters around Sapelo Island, Georgia, USA. Mar Ecol Prog Ser 55:83–94
Porter KG, Feig YG (1980) The use of DAPI for identifying and counting aquatic microflora. Limnol Oceanogr 25:943–948
Putt M, Stoecker D, Altstatt J (1991) Bacterivory in McMurdo Sound. 1. Grazing by heterotrophic nanoflasellates. Antarct J US 26:139–140
Sievers HA, Emery WJ (1978) Variability of the antarctic polar frontal zone in the Drake Passage — summer 1976–1977. J Geophys Res 83:3010–3022
Sievers HA, Nowlin WD Jr (1988) Upper ocean characteristics in Drake Passage and adjoining areas of the Southern Ocean. 39°W–95°W. In: Sahrhage D (ed) Antarctic Ocean and resources variability. Springer, Berlin Heidelberg NewYork, pp 57–80
Simon M, Azam F (1988) Protein content and protein synthesis rates of planktonic marine bacteria. Mar Ecol Proa Ser 51:201–213
Smith DC, Steward GF, Azam F, Hollibaugh JT (1992) Virus and bacteria abundances in the Drake Passage during January and August 1991. Antarct J US 27:125–127
Sullivan CW, Cota GF, Krempin DW, Smith WO Jr (1990) Distribution and activity of bacterioplankton in the marginal ice zone of the Weddell-Scotia Sea during austral spring. Mar Ecol Prog Ser 63:239–252
Sullivan CW, Arrigo KR, McClain CR, Comiso JC, Firestone J (1993) Distributions of phytoplankton blooms in the Southern Ocean. Science 262:1832–1837
Vaqué D, Gasol JM, Marrasé C (1994) Grazing rates on bacteria: the significance of methodology and ecological factors. Mar Ecol Prog Ser 109:263–274
Vincent WF (1988) Microbial ecosystems of Antarctica. Cambridge University Press, New York
Walsh JJ (1971) Relative importance of habitat variables in predicting the distribution of phytoplankton at the ecotone of the Antarctic upwelling ecosystem. Ecol Monogr 41: 291–309
Whitworth T III (1980) Zonation and geostrophic flow of the Antarctic Circumpolar Current at Drake Passage. Deep Sea Res 27A:497–507
Wiebe WJ, Hendricks CW (1974) Distribution of heterotrophic bacteria in a transect of the Antarctic Ocean. In: Colwell RR, Morita RY (eds) Effect of the ocean environment on microbial activities. University Park Press, Baltimore, pp 524–535
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Pedrós-Alió, C., Calderón-Paz, J.I., Guixa, N. et al. Microbial plankton across Drake Passage. Polar Biol 16, 613–622 (1996). https://doi.org/10.1007/BF02329059
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DOI: https://doi.org/10.1007/BF02329059