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JPR Advance Access originally published online on August 31, 2004
Journal of Plankton Research 2004 26(12):1479-1488; doi:10.1093/plankt/fbh135
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Journal of Plankton Research Vol. 26 No. 12 © Oxford University Press 2004; all rights reserved

Summer coastal zooplankton biomass and copepod community structure near the Italian Terra Nova Base (Terra Nova Bay, Ross Sea, Antarctica)

Luigi Pane1,*, Mirvana Feletti2, Barbara Francomacaro1 and Gian Luigi Mariottini1

1 Dipartimento di Biologia Sperimentale, Ambientale ed Applicata, Università di Genova, Viale Benedetto XV, 5, I-16132 Genova, Italy and 2 Regione Liguria, Assessorato Agricoltura e Turismo, via Fieschi 15, I-16121 Genova, Italy

* Corresponding Author: pane{at}unige.it

Received April 8, 2004; accepted in principle 14 July, 2004; accepted for publication August 9, 2004; published online 31 August, 2004

The structure of the zooplankton biotic community and of copepod population in the coastal area of Terra Nova Bay (Ross Sea, Antarctica) was investigated during the 10th Italian Antarctic Expedition (1994/1995). Zooplankton biotic community consisted mainly of pteropods (Limacina helicina and Clione antarctica), Cyclopoid (Oithona similis), Poecilostomatoid (Oncaea curvata) and Calanoid (Ctenocalanus vanus, Paraeuchaeta antarctica, Metridia gerlachei and Stephos longipes) copepods, ostracods, larval polychaetes and larval euphausiids. Zooplankton abundance ranged from 48.1 ind m–3 to 5968.9 ind m–3, and copepod abundance ranged from 45.2 ind m–3 to 3965.3 ind m–3. The highest peak of zooplankton abundance was observed between 25 m and the surface and was mainly due to the contribution of O. similis, O. curvata and C. vanus. Zooplankton biomass ranged from 5.28 mg m–3 to 13.04 mg m–3 dry weight; the maximum value was observed between 25 m and the surface. Total lipid content varied from 216.44 to 460.73 mg g–1 dry weight.


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