Spring bloom dynamics in Kongsfjorden, Svalbard: nutrients, phytoplankton, protozoans and primary production

By Helene Hodal, S. Falk‐Petersen, H. Hop, S. Kristiansen, Marit Reigstad. Polar Biology, 2012

158 citations recorded by the source corpus.

The marine ecosystem in Kongsfjorden (79°N), a glacial fjord in Svalbard, is to a large extent well known with regard to hydrography, mesozooplankton and higher trophic levels. Research on primary production and lower trophic levels is still scare and especially investigations from winter and spring periods. The spring bloom dynamics in Kongsfjorden were investigated in 2002. The development in nutrient conditions, phytoplankton, protozoans and primary production were followed from 15 April until 22 May. The winter/spring in 2002 was categorized as a cold year with sea ice cover and water masses dominated by local winter-cooled water. The spring bloom started around 18 April and lasted until the middle of May. The bloom probably peaked in late April, but break-up of sea ice made it impossible to sample frequently in this period. Diatoms dominated the phytoplankton assemblage. We estimated the total primary production during the spring bloom in 2002 to range 27–35 g C m−2. There was a mismatch situation between the mesozooplankton and the phytoplankton spring bloom in 2002.

Subfields: Atmospheric Science, Oceanography

View Paper: https://www.semanticscholar.org/paper/2620ce028fe0c4b8b188c548ad70bf8705b072d5

How researchers see this paper

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In Atmospheric Science

1. Ø. Varpe
2. S. Falk‐Petersen
3. O. Lønne
4. Jørgen Berge
5. F. Cottier
6. H. Hop
7. Malin Daase

In Oceanography

1. S. Falk‐Petersen
2. Ø. Varpe
3. Malin Daase
4. Janne E. Søreide
5. Jørgen Berge
6. H. Hop
7. E. Leu
8. A. Wold

Citations in the corpus

• In the dark: A review of ecosystem processes during the Arctic polar night (2015, background): “Further, pelagic algae blooms often occur while temperatures are at a minimum (see also Hodal et al., 2012) and close to the freezing point, hence demonstrating the relative importance of light rather than temperature as a regulating factor for primary production.”
• Distribution and abundance of euphausiids and pelagic amphipods in Kongsfjorden, Isfjorden and Rijpfjorden (Svalbard) and changes in their relative importance as key prey in a warming marine ecosystem (2016, background): “In late May/early June, positive air temperature warms the surface water layer and restores the stratification of the water mass. Summer warming and melting of sea ice and glaciers lead to a warm and relatively fresh surface water layer (0–50 m) with a pronounced thermocline and halocline in the inn”