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The dynamics of Chrysochromulina species in the Skagerrak in relation to environmental conditions Dahl, E.; Bagøien, E.; Edvardsen, B.; Stenseth, N.Ch. (2005). The dynamics of Chrysochromulina species in the Skagerrak in relation to environmental conditions. J. Sea Res. 54(1): 15-24. https://dx.doi.org/10.1016/j.seares.2005.02.004 In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101; e-ISSN 1873-1414, meer Ook verschenen in: Mills, D.K.; Gowen, R.J. (Ed.) (2005). Contrasting approaches to understanding eutrophication effects on phytoplankton. Journal of Sea Research, 54(1). Elsevier: Amsterdam. 1-124 pp., meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 352167 [ aanvragen ]

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Trefwoorden

Algae Algal blooms Environmental conditions Organic compounds > Carbohydrates > Glycosides > Pigments > Photosynthetic pigments > Chlorophylls Population dynamics Properties > Chemical properties > Salinity Properties > Physical properties > Thermodynamic properties > Temperature Time series Chrysochromulina Lackey, 1939 [WoRMS] ANE, Skagerrak [Marine Regions] Marien/Kust

Author keywords

Chrysochromulina; harmful algae; bloom dynamics; N : P ratio

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Auteurs		Top
Dahl, E. Bagøien, E. Edvardsen, B. Stenseth, N.Ch.

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Abstract

The aim of this paper was to determine how the abundance of species of the flagellate genus Chrysochromulina (Haptophyta) varies in relation to environmental conditions and season in a coastal area of the Skagerrak in southern Norway. The study was based on a fourteen-year time series (1989-2002) comprising data on Chrysochromulina spp. abundance, temperature, salinity, and nutrient and chlorophyll-a concentrations. Environmental data were aggregated by depth and season, and Chrysochromulina abundance was expressed as annual average abundance, which was positively correlated to annual maximum abundance. The main seasonal occurrence of Chrysochromulina was between April and August, but the abundance displayed strong short-term (days) and inter-annual variation. Annual average abundance of Chrysochromulina species was positively and significantly correlated with spring and summer N:P (nitrate/phosphate) ratios, and negatively and significantly correlated with summer salinity and summer phosphate concentration. The analysis indicates that high and skewed spring N:P ratios, stratified conditions with a low salinity surface layer during summer together with low phosphate concentrations are associated with favourable conditions for Chrysochromulina.

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