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Optical studies in the Southern Ocean

  • K E Rasmus
  • Wilhelm Granéli
  • S A Wangberg
Publiceringsår: 2004
Språk: Engelska
Sidor: 2583-2597
Publikation/Tidskrift/Serie: Deep-Sea Research. Part Ii, Topical Studies in Oceanography
Volym: 51
Nummer: 22-24
Dokumenttyp: Artikel i tidskrift
Förlag: Elsevier

Abstract english

During the Austral summer of 1997-1998, measurements of absorption, attenuation, downwelling and upwelling irradiance were made in the Southern Ocean along a S-N transect at 6degreesE. Measurements were made to quantify the penetration of ultraviolet B radiation (UVBR) in the water column and daily doses of UVBR at different water depths, to study the attenuation of photosynthetically active radiation (PAR), and to judge if in the investigated areas of the Southern Ocean phytoplankton are light limited. The results show that the UVBR affects a substantial portion of the upper mixed layer. The diffuse attenuation coefficients (K-PAR) for PAR were found to vary between 0.03 and 0.09 m(-1). Using the values for KPAR and the definition of the Sverdrup critical depth, the studied Southern Ocean plankton systems were found not to be light limited. (C) 2004 Elsevier Ltd. All rights reserved.


  • Ecology


  • ISSN: 0967-0645
Wilhelm Granéli
E-post: wilhelm [dot] graneli [at] biol [dot] lu [dot] se

Professor emeritus

Akvatisk ekologi

+46 70 279 82 34




Akvatisk ekologi