Browsing NIVA Open Access Archive by Author "Edvardsen, Bente"
Now showing items 1-8 of 8
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Changes in phytoplankton community structure over a century in relation to environmental factors
Lundsør, Elisabeth; Eikrem, Wenche; Stige, Leif Christian; Engesmo, Anette; Gran-Stadniczeñko, Sandra; Edvardsen, Bente (Peer reviewed; Journal article, 2022)Changes in phytoplankton abundance and biomass during the period 1933–2020 were examined by statistical modeling using data from the Inner Oslofjorden phytoplankton database. The phytoplankton abundances increased with ... -
Development of a qPCR assay to detect and quantify ichthyotoxic flagellates along the Norwegian coast, and the first Norwegian record of Fibrocapsa japonica (Raphidophyceae)
Engesmo, Anette; Strand, David; Gran-Stadniczeñko, Sandra; Edvardsen, Bente; Medlin, Linda K.; Eikrem, Wenche (Journal article; Peer reviewed, 2018)Blooms of ichthyotoxic microalgae pose a great challenge to the aquaculture industry world-wide, and there is a need for fast and specific methods for their detection and quantification in monitoring programs. In this ... -
Environmental Optima for Seven Strains of Pseudochattonella (Dictyochophyceae, Heterokonta)
Skjelbred, Birger; Edvardsen, Bente; Andersen, Tom (Journal article; Peer reviewed, 2013)The ichthyotoxic flagellate Pseudochattonella has formed recurrent blooms in the North Sea, Skagerrak and Kattegat since 1998. Five strains of Pseudochattonella farcimen and two strains of P. verruculosa were examined in ... -
Long-term coastal monitoring data show nutrient-driven reduction in chlorophyll
Lundsør, Elisabeth; Stige, Leif Christian; Sørensen, Kai; Edvardsen, Bente (Peer reviewed; Journal article, 2020)In this study we have compiled a long-term monitoring dataset from the inner Oslofjorden and supplemented it with short-term research data from the same station. Using generalized additive models analysing the data from ... -
Marine phytoplankton community data and corresponding environmental properties from eastern Norway, 1896–2020
Lundsør, Elisabeth; Lømsland, Evy Rigmor; Johnsen, Torbjørn Martin; Engesmo, Anette; King, Andrew Luke; Staalstrøm, Andre; Norli, Marit; Magnusson, Jan; Sørensen, Kai; Edvardsen, Bente; Eikrem, Wenche (Peer reviewed; Journal article, 2022)Time series are essential for studying the long-term effects of human impact and climatic changes on the natural environment. Although data exist, no long-term phytoplankton dataset for the Norwegian coastal area has been ... -
Optimal growth conditions of the haptophyte Chrysochromulina leadbeateri causing massive fish mortality in Northern Norway
Fon, Mathias; Supraha, Luka; Andersen, Tom; Uhlig, Silvio; Edvardsen, Bente (Peer reviewed; Journal article, 2024)The haptophyte Chrysochromulina leadbeateri formed the most devastating fish-killing algal bloom ever recorded in Norway, in May and June 2019. The bloom resulted in the death of 14,500 tons of farmed salmon in Nordland ... -
Protist Diversity and Seasonal Dynamics in Skagerrak Plankton Communities as Revealed by Metabarcoding and Microscopy
Gran-Stadniczenko, Sandra; Egge, Elianne; Hostyeva, Vladyslava; Logares, Ramiro; Eikrem, Wenche; Edvardsen, Bente (Journal article; Peer reviewed, 2019)Protist community composition and seasonal dynamics are of major importance for the production of higher trophic levels, such as zooplankton and fish. Our aim was to reveal how the protist community in the Skagerrak changes ... -
Seasonal diversity and dynamics of haptophytes in the Skagerrak, Norway, explored by high-throughput sequencing
Egge, Elianne Sirnæs; Johannessen, Torill Vik; Andersen, Tom; Eikrem, Wenche; Bittner, Lucie; Larsen, Aud; Sandaa, Ruth-Anne; Edvardsen, Bente (Journal article, 2015)Microalgae in the division Haptophyta play key roles in the marine ecosystem and in global biogeochemical processes. Despite their ecological importance, knowledge on seasonal dynamics, community composition and abundance ...