Browsing Bergen Open Research Archive by Author "Frigstad, Helene"

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Carbon to nutrient ratios in marine systems: understanding natural variability Studies of seasonal, inter-annual and regional variability

Frigstad, Helene (Doctoral thesis, 2012-06-29)

Ecological stoichiometry deals with the coupling of the carbon (C), nitrogen (N) and phosphorus (P) cycles at the base of the aquatic food webs. Variation in C:N:P stoichiometry is driven by a multitude of factors, and the ...
Fluxes of carbon and nutrients to the Iceland Sea surface layer and inferred primary productivity and stoichiometry

Jeansson, Emil; Bellerby, Richard; Skjelvan, Ingunn; Frigstad, Helene; Ólafsdóttir, Sólveig R.; Ólafsson, Jón Hjaltalín (Peer reviewed; Journal article, 2015-02-12)

This study evaluates long-term mean fluxes of carbon and nutrients to the upper 100 m of the Iceland Sea. The study utilises hydro-chemical data from the Iceland Sea time series station (68.00° N, 12.67° W), for the years ...
Seasonal variation in marine C:N:P stoichiometry: can the composition of seston explain stable Redfield ratios?

Frigstad, Helene; Andersen, T.; Hessen, D. O.; Naustvoll, L. J.; Johnsen, Torbjørn Martin; Bellerby, Richard G. J. (Peer reviewed; Journal article, 2011)

Seston is suspended particulate organic matter, comprising a mixture of autotrophic, heterotrophic and detrital material. Despite variable proportions of these components, marine seston often exhibits relatively small ...