Abstract
In a previous paper the occurrence of nematodes, rotifers and tardigrades in 29 samples from nunataks in Dronning Maud Land, East Antarctica taken 1991/1992 was recorded. In this study, a more thorough description of animal distribution is possible by adding 64 new samples (1993/1994), thus increasing the total number from these studies to 93 soil samples from 11 nunataks. The number of species recorded from the area has now increased from 27 to 34. The populations were patchily distributed and the species composition differed between nunatak areas in Vestfjella and Heimefrontfjella. In most samples only one or a few species of nematodes or tardigrades were found. The number of rotifer species in a particular sample varied from nought to seven. Rotifers occurred in most of the samples (76%) with a maximum density of 750 specimens/gram dry weight. The nematode distribution was more restricted. Nematodes were found in high abundance on only four of the nunataks and occurred in 35% of the samples with a maximum density of 210 specimens/gram dry weight. Tardigrades were found in 39% of the samples with a maximum density of 580 specimens/gram dry weight. Some of the tardigrade species were widely distributed, whereas others were found only on specific nunataks. The distribution pattern of the fauna on two of the nunataks, Basen and Fossilryggen, was studied in greater detail and the results showed little difference in peak abundance and species composition between samplings carried out during two southern summer seasons.
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References
Block W (1984) Terrestrial microbiology, invertebrates and ecosystems. In: Laws R (ed) Antarctic ecology (vol 1). Academic Press, London, pp 163–236
Block W (1994) Terrestrial ecosystems: Antarctica. Polar Biol 14:293–300
Boström S (1995) Populations ofPlectus acuminatus Bastian, 1865 andPanagrolaimus magnivulvatus n.sp. (Nematoda) from nuntaks in Dronning Maud Land, East Antarctica. Fundam Appl Nematol 18:25–34
Dastych H (1984) The Tardigrada from Antarctica with descriptions of several new species. Acta Zool Cracov 27:377–436
Dastych H (1991) Redescription ofHypsibius antarcticus (Richters, 1904), with some notes onHypsibius arcticus (Murray, 1907) (Tardigrada). Mitt Hamb Zool Mus Inst 88:141–159
Freckman DW, Virginia RA (1993) Extraction of nematodes from Dry Valley Antarctic soils. Polar Biol 13:483–487
Hallas TE, Yates GW (1972) Tardigrada of the soil and litter of a Danish beech forest. Pedobiologia 12:287–304
Jennings PG (1979) The Signy Island terrestrial reference sites. X. Population dynamics of Tardigrada and Rotifera. Br Antarct Surv Bull 47:89–105
McInnes SJ (1994) Zoogeographic distribution of terrestrial/freshwater tardigrades from current literature. J Nat Hist 28:257–352.
Miller WR, Heatwole H (1995) Tardigrades of the Australian Territories, and the Mawson Coast, East Antarctica. Invertebrate Biol 114:27–38
Nielsen CO (1948) An apparatus for quantitative extraction of nematodes and rotifers from soil and moss. Nat Jutl 1:271–278
Ruess L (1995) Studies on the nematode fauna of an acid forest soil: spatial distribution and extraction. Nematologica 41:229–239
Ryan PG, Watkins BP (1989) The influence of physical factors and ornithogenic products on plant and arthropod abundance at an inland nunatak group in Antarctica. Polar Biol 10:151–160
Ryan PG, Watkins BP, Lewis Smith RI, Dastych H, Eicker A, Foissner W, Heatwole H, Miller WR, Thompson G (1989) Biological survey of Robertskollen, western Dronning Maud Land: area description and preliminary species list. S Afr J Antarct Res 19:10–20
Smith HG (1992) Distribution and ecology of the testate rhizopod fauna of the continental Antarctic zone. Polar Biol 12:629–634
Sohlenius B (1979) A carbon budget for nematodes, rotifers and tardigrades in a Swedish coniferous forest soil. Holarct Ecol 2:30–40
Sohlenius B (1980) Abundance, biomass and contribution to energy flow by soil nematodes in terrestrial ecosystems. Oikos 34:186–194
Sohlenius B, Boström S, Hirschfelder A (1995) Nematodes, rotifers and tardigrades from nunataks in Dronning Maud Land, East Antarctica. Polar Biol 15:51–56
Sømme L (1986) New records of terrestrial arthropods from Dronning Maud Land, Antarctica. Polar Res 4:225–229
Sømme L, Meier T (1995) Cold tolerance in Tardigrada from Dronning Maud Land, Antarctica. Polar Biol 15:221–224
Sudzuki M (1964) On the microfauna of the Antarctic region. I. Moss-eater community at Langhovde. JARE Sci Rep Ser E Biol 19:1–41
Walton DWH (1990) Colonization of terrestrial habitats-organisms, opportunities and occurrence. In: Kerry KR, Hempel G (eds) Antarctic ecosystems. Ecological change and conservation. Springer, Berlin Heidelberg New York, pp 51–60
Wharton DA, Brown IM (1991) Cold-tolerance mechanisms of the antarctic nematodePanagrolaimus davidi. J Exp Biol 155:629–641
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Sohlenius, B., Boström, S. & Hirschfelder, A. Distribution patterns of microfauna (nematodes, rotifers and tardigrades) on nunataks in Dronning Maud Land, East Antarctica. Polar Biol 16, 191–200 (1996). https://doi.org/10.1007/BF02329207
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DOI: https://doi.org/10.1007/BF02329207