Survey of bottom-up controls of Emiliania huxleyi in the Northeast Subarctic Pacific

In contrast to the North Atlantic, there are few studies of the coccolithophore Emiliania huxleyi in the Northeast Subarctic Pacific. Yet, recent observations in this area suggest that during spring E. huxleyi is more important than previously thought. To survey potential bottom-up controls of E. hu...

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Bibliographic Details
Published in:Deep-sea research. Part I, Oceanographic research papers Oceanographic research papers, 2004-12, Vol.51 (12), p.1793-1802
Main Authors: Putland, J.N., Whitney, F.A., Crawford, D.W.
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Biological and medical sciences
British Columbia
Calcification
Canada
Chlorophyll
Coccolithophores
Ecophysiology
Emiliania huxleyi
Fisheries
Food webs
Fundamental and applied biological sciences. Psychology
Marine ecology
Northeast Subarctic Pacific
Nutrients
Plankton
Sea water ecosystems
Seawater
Synecology
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Summary:In contrast to the North Atlantic, there are few studies of the coccolithophore Emiliania huxleyi in the Northeast Subarctic Pacific. Yet, recent observations in this area suggest that during spring E. huxleyi is more important than previously thought. To survey potential bottom-up controls of E. huxleyi, seawater samples were collected from the surface layer in the Northeast (NE) Pacific, mainly during June 2001. Average surface mixed layer irradiance, temperature, salinity, nutrient concentrations (nitrate, phosphate, silicate), and abundances of E. huxleyi were determined. Data were partitioned among high nutrient-low chlorophyll (HNLC) waters and mesoscale eddies that carry waters enriched with macronutrients and iron. No significant differences existed between HNLC waters and mesoscale eddies, with respect to relationships among E. huxleyi abundance and physical and chemical parameters. All chemical and physical parameters, except underwater irradiance, were significantly inter-correlated . E. huxleyi represented up to 67%, but generally
ISSN:0967-0637
1879-0119
DOI:10.1016/j.dsr.2004.08.001