Summary
Protozooplankton were sampled in the iceedge zone of the Weddell Sea during the austral spring of 1983 and the austral autumn of 1986. Protozooplankton biomass was dominated by flagellates and ciliates. Other protozoa and micrometazoa contributed a relatively small fraction to the heterotrophic biomass. During both cruises protozoan biomass, chlorophyll a concentrations, phytoplankton production and bacterial biomass and production were low at ice covered stations. During the spring cruise, protozooplankton, phytoplankton, and bacterioplankton reached high concentrations in a welldeveloped ice edge bloom ∼ 100 km north of the receding ice edge. During the autumn cruise, the highest concentrations of biomass were in open water well-separated from the ice edge. Integrated protozoan biomass was <12% of the biomass of phytoplankton during the spring cruise and in the autumn the percentages at some stations were >20%. Bacterial biomass exceeded protozooplankton biomass at ice covered stations but in open water stations during the fall cruise, protozooplankton biomass reached twice that of bacteria in the upper 100m of the water column. The biomass of different protozoan groups was positively correlated with primary production, chlorophyll a concentrations and bacterial production and biomass, suggesting that the protozoan abundances were largely controlled by prey availability and productivity. Population grazing rates calculated from clearance rates in the literature indicated that protozooplankton were capable of consuming significant portions of the daily phyto- and bacterioplankton production.
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References
Ainley DG, Sullivan CW (1984) AMERIEZ 1983: A summary of activities on board the R/V Melville and USCGC Westwind. Antarct J US 19:100–103
Andersen P, Fenchel T (1985) Bactivory by microheterotrophic flagellates in seawater samples. Limnol Oceanogr 30:198–202
Azam F, Ammerman JW, Cooper N (1981) Bacterioplankton distributional patterns and metabolic activities in the Scotia Sea. Antarct J US 16:164–165
Azam F, Fenchel T, Field JG, Gray JS, Meyer-Reil LA, Thingstad F (1983) The ecological role of water-column microbes in the sea. Mar Ecol Prog Ser 10:257–263
Beers JR, Stewart GL (1970) Numerical abundance and estimated biomass of microzooplankton. In: Stickland JDR (ed) The ecology of the plankton off La Jolla, California in the period April through September, 1967. Bull Scripps Inst Oceanogr 17:67–87
Brockel K von (1981) The importance of nanoplankton within the pelagic Antarctic ecosystem. Kieler Meeresforsch Sonderh 5:61–67
Buck KR, Garrison DL (1983) Protists from the water column of the Weddell Sea ice edge. Deep-Sea Res 30:1261–1277
Buck KR, Garrison DL (1988) Distribution and abundance of choanoflagellates (Acanthoecidae) across the ice edge zone in the Weddell Sea, Antarctica. Mar Biol 98:263–269
Buck KR, Garrison DL, Hopkins TL (1987) Abundance and distributions of tintinnids in an ice edge zone: an AMERIEZ study. EOS 68:1773
Burkill PH (1982) Ciliates and other microplankton components of a nearshore food-web: standing stocks and production processes. Ann Inst Oceanogr, Paris 58(S):335–350
Caron DA (1983) Technique for enumeration of heterotrophic and phototrophic nanoplankton, using epifluorescence microscopy with other procedures. Appl Environ Microbiol 46:491–498
Capriulo GM, Carpenter EJ (1980) Grazing by 35 to 202 μm micro-zooplankton in Long Island Sound. Mar Biol 56:319–326
Corliss JO, Snyder RA (1986) A preliminary description of several new ciliates from the Antarctic, including Cohnilembus grassei n. sp. Protistologica 22:39–46
Davis PG, Sieburth J McN (1984) Estuarine and ocean microflagellate predation of actively growing bacteria: estimation by frequency of dividing-divided bacteria. Mar Ecol Prog Ser 19:237–246
Dodson AN, Thomas WH (1978) Reverse filtration. In: Sournia A (ed) Phytoplankton manual. UNESCO, Paris, pp 104–112
Eppley RW, Reid FMH, Strickland JDH (1970) Estimates of phytoplankton crop size, growth rate, and primary production. In: Strickland JDR (ed) The ecology of the plankton off La Jolla, California in the period April through September, 1967. Bull Scripps Inst Oceanogr 17:33–42
Fay RR (1973) Significance of nanoplankton in primary production of the Ross Sea, Antarctica, during the 1972 Austral summer. Ph D Thesis, Texas A&M University, pp 1–184
Fryxell GA, Kendrick GA (1988) Austral spring bloom near the Weddell Sea ice edge: spatial relationships found along a northward transect during AMERIEZ 83. Deep-Sea Res 35:1–20
Fuhrman JA, Azam F (1980) Bacterioplankton secondary production estimates for coastal waters of British Columbia, Antarctica, and California. Appl Environ Microbiol 39:1085–1095
Gaines G, Taylor FJR (1984) Extracellular digestion in marine dinoflagellates. J Plankton Res 6:1057–1061
Garrison DL, Buck KR, Fryxell GA (1987) Algal assemblages in Antarctic pack ice and in ice-edge plankton. J Phycol 23:564–572
Gifford DJ (1985) Laboratory culture of marine planktonic oligotrichs (Ciliopra, Oligotrichida). Mar Ecol Prog Ser 23:257–267
Gold K (1976) Methods for preserving Tintinnids. In: Steedman HF (ed) Zooplankton fixation and preservation. UNESCO, Paris, pp 236–239
Gowing MM, Garrison DL, Buck KR (1987) Distribution and trophic ecology of Phaeodarian Radiolaria from the Weddell Sea and the western Antarctic peninsula area: an AMERIEZ Study. EOS 68:1773
Haas LH (1982) Improved epifluorescence microscopy for observing planktonic organisms. Ann Inst Oceanogr, Paris 58:261–266
Hasle GR (1969) An analysis of the phytoplankton of the Pacific southern ocean: abundance, composition, and distribution during the Brategg Expedition, 1947–48. Hvalradets Skr 52:6–168
Heinbokel JF (1978) Studies of the functional role of Tintinnids in the southern California bight. II. Grazing rates of field populations. Mar Biol 47:191–197
Heinbokel JF, Beers JR (1979) Studies on the functional role of tintinnids in the southern California bight. III. Grazing impact on natural assemblages. Mar Biol 52:23–32
Heinbokel JF, Coats DW (1985) Ciliates and nanoplankton in Arthur Harbor, December 1984 and January 1985. Antarctic J US 19:135–136
Hentschel E (1932) Die biologischen Methoden und das biologische Beobachtungsmaterial der Meteor-Expedition. Wiss Ergebn Dtsch Atlant Exped ‘Meteor’ 10:151–364
Hewes CD, Holm-Hansen O, Sakshaug E (1983) Nanoplankton and microplankton studies during the Circumnavigation Cruise. Antarct J US 18:169–171
Hewes CD, Holm-Hansen O, Sakshaug E (1985) Alternative carbon pathways at lower trophic levels in the Antarctic food web. In: Siegfried WR, Condy PR, Laws RM (eds) Antarctic nutrient cycles and food webs. Springer, Berlin, pp 277–283
Hodson RE, Azam F, Carlucci AF, Fuhrman JA (1981) Microbial uptake of dissolved organic matter in McMurdo Sound, Antarctica. Mar Biol 61:89–94
Hopkins TL, Torres JJ (1988) The zooplankton community in the vicinity of the ice edge, Western Weddell Sea, March 1986. Polar Biol 9:79–87
Jacobson DM, Anderson DM (1986) Thecate heterotrophic dinoflagellates: feeding behavior and mechanisms. J Phycol 22:249–258
Krempin DM (1985) The role of bacterioplankton as producers in two high-productivity marine ecosystems. Ph D Dissertation, University of Southern California, pp 1–212
Kimor B (1981) The role of phagotrophic dinoflagellates in marine ecosystems. Kieler Meeresforsch Sonderh 5:164–173
Landry MR, Hasett RP (1982) Estimating the grazing impact on marine microzooplankton. Mar Biol 67:283–288
Lessard EJ, Swift E (1985) Species-specific grazing rates of heterotrophic dinoflagellates in oceanic waters, measured with a dual-label radioisotope technique. Mar Biol 87:289–296
Lessard EJ, Voytek M, Rivkin R (1987) The heterotrophic based nutrition of the microzooplankton and macrozooplankton in McMurdo Sound, Antarctica. EOS 68:1773
Marchant HJ (1985) Choanoflagellates in the Antarctic food chain. In: Siegfried WR, Condy PR, Laws RM (eds) Antarctic nutrient cycles and food wegs. Springer, Berlin, pp 271–276
Nelson DM, Smith WO Jr, Gordon LI, Huber BA (1987) Spring distribution of density, nutrients and phytoplankton biomass in the iceedge zone of the Weddell/Scotia Sea. J Geophys Res 92:7181–7190
Nelson DM, Smith Jr WO, Muench RD, Gordon LI (1989) Particulate matter and nutrient distribution in the ice-edge zone of the Weddell Sea: Relationship to hydrography during the late summer. Deep-Sea Res (in press)
Parsons TR, Maita Y, Lalli CM (1984) A manual of chemical and biological methods for seawater analysis. Pergamon Press, New York, pp 107–112
Reid FMH (1983) Biomass estimation of components of marine nanoplankton and picoplankton by the Utermohl method. J Plankton Res 5:235–251
Sieburth J McN (1981) Protozoan bactivory in pelagic marine waters. In: Hobbie JE, Williams PJ leB (eds) Heterotrophic activity in the sea: Proceedings of Nato Advanced Research Institute on Microbial Metabolism and the cycling of organic matter held November 1981 in Cascais, Portugal. Plenum Press, New York, pp 405–444
Sieburth J McN, Smetacek V, Lenz J (1978) Pelagic ecosystem structure: Heterotrophic compartments of the plankton and their relationship to plankton size fractions. Limnol Oceanogr 23:1256–1263
Silver MW, Mitchel JG, Ringo DL (1980) Siliceous nanoplankton. II. Newly discovered cysts and abundant choanoflagellates from the Weddell Sea, Antarctica. Mar Biol 58:211–217
Smetacek VS (1981) The annual cycle of protozooplankton in the Kiel Bight. Mar Biol 63:1–11
Smith Jr WO (1987) Phytoplankton dynamics in marginal ice zones. Oceanogr Mar Biol Annu Rev 25:11–38
Sorokin YI (1981) Microheterotrophic organisms in marine ecosystems. In: Longhurst AR (ed) Analysis of marine ecosystems. Academic Press, New York, pp 293–342
Spero HJ, Moree MD (1981) Phagotrophic feeding and its importance to the lifecycle of the holozoic dinoflagellate, Gymnodinium fungiforme. J Phycol 17:43–51
Sullivan CW, Ainley DG (1987) AMERIEZ 86: A summary of activities on board the R/V Melville and the USCGC Glacier. Antarctic J US 20
Takahashi M, Hoskins KD (1978) Winter condition of marine plankton populations in Saanich Inlet, B. C., Canada. II. Micro-zooplankton. J Exp Mar Biol Ecol 32:27–37
Taylor GT (1982) The role of pelagic heterotrophic protozoa in nutrient cycling: a review. Ann Inst Oceanogr, Paris 58(S):227–241
Verity PG (1984) The physiology and ecology of tintinnids in Narragansett Bay, Rhode Island. Ph D Dissertation, University of Rhode Island, 432 pp
Wilson DL, Smith WO, Nelson DM (1986) Phytoplankton bloom dynamics of the Western Ross Sea ice edge. I. Primary productivity and species-specific production. Deep-Sea Res 33:1375–1387
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Garrison, D.L., Buck, K.R. Protozooplankton in the Weddell Sea, Antarctica: Abundance and distribution in the ice-edge zone. Polar Biol 9, 341–351 (1989). https://doi.org/10.1007/BF00442524
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DOI: https://doi.org/10.1007/BF00442524