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Polar Biology

, Volume 13, Issue 4, pp 215–225 | Cite as

Distribution of antarctic zooplankton around Elephant Island during the austral summers of 1988, 1989, and 1990

  • C. Park
  • J. H. Wormuth
Article

Abstract

Year to year variation and vertical distributions of epipelagic Zooplankton around Elephant Island and King George Island were examined with samples collected with bongo nets and a 1 m2 MOCNESS during the austral summers (Jan–Feb.) of 1988, 1989 and 1990. Copepods were the major components of epipelagic Zooplankton (in numbers) with dominance of Metridia gerlachei (1988 and 1989) and small calanoids and cyclopoids (1990). Euphausiids and salps were the next most abundant groups. The percent composition of euphausiids decreased from 1988 to 1990 while that of salps increased. The abundance of salps exceeded euphausiids and major taxa of copepods in 1990. Local patches of polychaetes and amphipods were also found. Statistically significant annual variations with increased numbers in 1990 were found by analyses of variance in total abundance, abundances of copepods, salps, chaetognaths and amphipods, but abundances of euphausiids, polychaetes and fishes showed no significant annual variations. When the study area was divided geographically, horizontal variability in abundance within each year showed no significance in total abundance, abundances of copepods, euphausiids, amphipods and fishes, but significance in salps, polychaetes and chaetognaths. Results of site clustering based on covariances of abundances of eleven major taxa were well matched, though not perfect, with the distribution of surface water temperatures which could be used as a tracer of source water masses suggesting that spatial variation was related to hydrodynamic conditions. Factor analyses showed that annual and spatial variations in abundance were mainly caused by only two taxa, Metridia gerlachei and salps (mostly Salpa thompsoni). These two taxa were responsible for about 60% and 30% of total variance, respectively, and were useful indicators of the interannual variation. That is, 1988 and 1989 were the years of M. gerlachei, and 1990 was the year of salps. From vertically stratified MOCNESS samples, it was shown that the major taxa in this study area were active vertical migrators. While most samples obtained by relatively shallow tows (uppermost 100 m depth) were composed of exclusively one or two taxa, those from relatively deep tows (down to 200 m) showed various patterns of vertical stratification suggesting that the patterns of vertical migration were species specific. Species specific ontogenetic vertical migration associated with elevated habitat temperatures also seemed to be responsible for the annual variation in zooplankton distribution in the upper water column.

Keywords

Polychaete Total Abundance Vertical Migration Austral Summer Surface Water Temperature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Antarctic Ecosystem Research Group (1990) U.S. Antarctic Marine Living Resources program. AMLR 1989/90 field season report, objectives, accomplishments and tentative conclusions. Natl Mar Fish Ser, Southwest Fisheries Center, La JollaGoogle Scholar
  2. Atkinson A (1989) Distribution of six major copepod species around South Georgia in early summer. Polar Biol 9:353–363Google Scholar
  3. Atkinson, A, Peck JM (1988) A summer-winter comparison of zooplankton in the oceanic area around South Georgia. Polar Biol 8:463–473Google Scholar
  4. Boysen-Ennen E, Piatkowski U (1988) Meso-and marcrozooplankton communities in the Weddell Sea, Antarctica, Polar Biol 9:17–35Google Scholar
  5. Brinton E, Loeb, VJ, Macaulay MC, Shulenberger E (1987) Variability of Euphausia superba population near Elephant Island and the South Shetlands: 1981 vs. 1984. Polar Biol 7:345–362Google Scholar
  6. Casareto BE, Nemoto T (1986) Salps of the Southern Ocean (Australian sector) during the 1983–84 summer, with special reference to the species Salpa thompsoni, FOXTON 1961. Mem Natl Inst Polar Res, Spec Issue 40:221–239Google Scholar
  7. Chojnacki J, ie224–01 T (1984) Periodicity of composition, abundance, and vertical distribution of summer zooplankton (1977/1978) in Ezcurra Inlet, Admiralty Bay (King George Island, South Shetland). J Plankton Res 6:997–1017Google Scholar
  8. Endo Y, Imaseki T, Komaki Y (1986) Biomass and population structure of Antarctic krill (Euphausia superba DANA) collected during SIBEX II cruise of R. V. Kaiyo Maru. Mem Natl. Inst Polar Res, Spec Issue 44:107–117Google Scholar
  9. Godlewska M, Klusek Z (1987) Vertical distribution and diurnal migrations of krill — Euphausia superba Dana — from hydroacoustical observations, SIBEX, December 1983/January 1984. Polar Biol 8:17–22Google Scholar
  10. Hagen W (1985) On distribution and population structure of Antarctic Chaetognatha Meeresforsch 30:280–291Google Scholar
  11. Hempel I (1979) Vertical distribution of eggs and nauplii of krill (Euphausia superba) south of Elephant Island. Meeresforsch 27:119–123Google Scholar
  12. Hempel I (1985) Variation in geographical distribution and abundance of larvae of antarctic krill, Euphausia superba in the southern Atlantic ocean. In: Siegfried WR, Condy PR, Laws RM (eds) Antarctic nutreint cycles and food webs. Springer, Berlin Heidelberg, New York, 304–307Google Scholar
  13. Hewitt R (1989) U.S. Antarctic Marine Living Resources program. Cruise report AMLR 8901, Objectives, accomplishments and tentative conclusions. Natl Mar Fish Ser, Southwest Fisheries Center, La JollaGoogle Scholar
  14. Heywood RB, Everson I, Priddle J (1985) The absence of Krill from the South Georgia zone, winter 1983. Deep-Sea Res 32:369–378Google Scholar
  15. Hopkins TL, Torres JJ (1988) The zooplankton community in the vicinity of the ice edge, western Weddell Sea, March 1986. Polar Biol 9:79–87Google Scholar
  16. Hubold G, Hempel I, Meyer M (1988) Zooplankton communities in the southern Weddell Sea (Antarctica). Polar Biol 8:225–233Google Scholar
  17. James R (1979) Antarctic chaetognaths from a time station near Elephant Island. Meeresforsch 27:282–287Google Scholar
  18. Loeb VJ, Shulenberger E (1987) Vertical distributions and relations of Euphausiid populations off Elephant Island, March 1984. Polar Biol 7:363–373Google Scholar
  19. Loeb VJ, Macaulay MC, Wormuth JH (1993) Krill stock distribution and composition in the Elephant Island and King George Island areas, January–February, 1988. Polar Biol (in press)Google Scholar
  20. Makarov RR, Maslennikov VV, Solynakin EV, Spiridonov VA, Yakovlev VN (1988) Variability in population density of Antarctic krill in the western Scotia Sea in relation to hydrological conditions. In: Sahrhage D (ed) Antarctic ocean and resources variability. Springer, Berlin Heidelberg, New York, pp 231–236Google Scholar
  21. Marin V (1987) The oceanographic structure of the eastern Scotia Sea-IV. Distribution of copepod species in relation to hydrography in 1981. Deep-Sea Res 34:105–121Google Scholar
  22. Nast F (1979) The vertical distribution of larval and adult krill (Euphausia superba Dana) on a time station south of Elephant Island, South Shetlands. Meeresforsch 27:103–118Google Scholar
  23. Nast F (1986) Changes in krill abundance and in other zooplankton relative to the Weddell-Scotia confluence around Elephant Island in November 1983, November 1984 and march 1985. Arch Fisch Wiss 37:73–94Google Scholar
  24. Nast F, Kock K-H, Sahrhage D, Stein M, Tiedtke JE (1988) Hydrography, krill and fish and their possible relationships around Elephant Island. In: Sahrhage D (ed) Antarctic ocean and resources variability. Springer, Berlin Heidelberg, New York, pp. 183–198Google Scholar
  25. Piatkowski U (1985) Distribution, abundance and diurnal migration of macrozooplankton in Antarctic surface waters. Meeresforsch 30:264–279Google Scholar
  26. Piatkowski U (1985b) Maps of the geogrpahical distribution of macrozooplankton in the Atlantic Sector of the Southern Ocean. Ber Polarforsch 22:55 ppGoogle Scholar
  27. Piatkowski U (1989) Macroplankton communities in Antarctic surface waters: spatial changes related to hydrography. Mar Ecol Preg Ser 55:251–259Google Scholar
  28. Priddle J, Croxall JP, Everson I, Heywood RB, Murphy EJ, Prince PA, Sear CB (1988) Large-scale fluctuations in distribution and abundance of krill-A discussion of possible causes. In: Sahrhage D (ed) Antarctic ocean and resources variability. Springer, Berlin Heidelberg, New York, pp 169–182Google Scholar
  29. Sahrhage D (1988) Some indications for environmental and krill resources variability in the Southern Ocean. In: Sahrhage D (ed) Antarctic ocean and resources variability. Springer, Berlin Heidelberg, New York, pp 33–40Google Scholar
  30. SAS (1985) SAS user's guide: Statistics, 5th edn. SAS Institute Inc. CaryGoogle Scholar
  31. Schnack-Schiel SB, Hagen W, Mizdalski E (1991) Seasonal comparison of Calanoides acutus and Calanus propinquus (Copepoda: Calanoida) in the southestern Weddell Sea, Antarctica. Mar Ecol Prog Ser 70:17–27Google Scholar
  32. Schnack-Schiel SB, Mujica AR (1993) The zooplankton of the greater Antarctic Peninsula Region. In: El-sayed SZ (ed) Southern Ocean Ecology: The BIOMASS perspective. Cambridge University Press (in press)Google Scholar
  33. Siegel V (1988) A concept of seasonal variation of krill (Euphausia superba) distribution and abundance west of the Antarctic Peninsula. In: Sahrhage D (ed) Antarctic ocean and resources variability. Springer, Berlin Heidelberg, New York, pp. 219–230Google Scholar
  34. Siegel V, Piatkowski U (1990) Variability in the macrozooplankton community off the Antarctic Peninsula. Polar Biol 10:373–386Google Scholar
  35. Siegel V, Skibowski A, Harm U (1992) Community structure of the epipelagic zooplankton community under the sea-ice of the northern Weddell Sea. Polar Biol 12:15–24Google Scholar
  36. Stein M (1988) Variation of geostrophic circulation off the Antarctic Peninsula and in the southwest Scotia Sea, 1975–1985. In: Sahrhage D (ed) Antarctic ocean and resources variability. Springer, Berlin Heidelberg, New York, pp 81–91Google Scholar
  37. Witek Z, Kittel W, Czykieta H, Zmijewska MI, Presler E (1985) Macrozooplankton in the southern Drake Passage and in the Bransfield Strait during BIOMASS-SIBEX (December 1983–January 1984). Pol Polar Res 6:95–115Google Scholar
  38. Zmijewska MI (1988) Vertical distribution and population structure of Copepoda in a water column between King George Island and Elephant Island (BIOMASS III, October–November 1986). Polish Polar Res 9:283–304Google Scholar

Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • C. Park
    • 1
  • J. H. Wormuth
    • 1
  1. 1.Department of OceanographyTexas A&M UniversityCollege StationUSA

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