Iron stress in the Pacific region of the Southern Ocean: evidence from enrichment bioassays

Iron stress in the Pacific region of the Southern Ocean: evidence from enrichment bioassays

The effect of iron on phytoplankton physiology in a scarcely investigated part of the Pacific region of the Southern Ocean was studied during an expedition aboard RV 'Polarstern'. Physiological effects of iron enrichments were studied during short-term bottle experiments (72 h) in high-nut...

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Veröffentlicht in:Marine ecology. Progress series (Halstenbek) 1998-05, Vol.166, p.27-41
Hauptverfasser: Timmermans, K. R., van Leeuwe, M. A., de Jong, J. T. M., McKay, R. M. L., Nolting, R. F., Witte, H. J., van Ooyen, J., Swagerman, M. J. W., Kloosterhuis, H., de Baar, H. J. W.
Format: Artikel
Sprache:eng
Schlagworte:
Bacillariophyta
Diatoms
Marine
Nitrates
Oceans
Phytoplankton
Plankton
Quaternary ammonium compounds
Sea water
Seas
Silicates
Time series
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Zusammenfassung:The effect of iron on phytoplankton physiology in a scarcely investigated part of the Pacific region of the Southern Ocean was studied during an expedition aboard RV 'Polarstern'. Physiological effects of iron enrichments were studied during short-term bottle experiments (72 h) in high-nutrient, low-chlorophyll (HNLC) water samples. Throughout the expedition (March to May 1995), surface water nitrate concentrations were high (21 to 27 μM) and surface water silicate concentrations varied considerably north (13 μM) of the Polar Front, whereas low chlorophyll a concentrations (
ISSN:0171-8630
1616-1599
DOI:10.3354/meps166027