Browsing NIVA Open Access Archive by Author "Eikrem, Wenche"

Now showing items 1-20 of 38

    • Acclimation to various temperature and pCO2 levels does not impact the competitive ability of two strains of Skeletonema marinoi in natural communities 

      Briddon, Charlotte L.; Nicoară, Maria; Hegedüs, Adriana; Niculea, Adina; Bellerby, Richard; Eikrem, Wenche; Gomez Crespo, Bibiana; Dupont, Sam; Drugă, Bogdan (Peer reviewed; Journal article, 2023)
      Understanding the long-term response of key marine phytoplankton species to ongoing global changes is pivotal in determining how oceanic community composition will respond over the coming decades. To better understand the ...

    • A baseline study of the occurrence of non-indigenous species in Danish harbours 

      Andersen, Jesper Harbo; Kallenbach, Emilie; Kjeldgaard, Mathias Brink; Knudsen, Steen Wilhelm; Eikrem, Wenche; Fagerli, Camilla With; Oug, Eivind; Dale, Trine; Thaulow, Jens; Gitmark, Janne Kim; Hobæk, Anders; Green, Norman Whitaker; Hesselsøe, Martin; Støttrup, Josianne; Kuhn, Jesper; Bekkevold, Dorte; Jacobsen, Lars Magnus Wulf; Møller, Peter Rask; Olesen, Christian Aakjær; Carl, Henrik; Stuer-Lauridsen, Frank (NIVA-rapport;7769-2022, Research report, 2022)
      We report the first ever nation-wide study of the occurrence of non-indigenous species in Danish harbours. The sampling was car-ried out using both conventional and biomolecular methods (eDNA). In total, 16 harbours were ...

    • 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 ...

    • Chloropicophyceae, a new class of picophytoplanktonic prasinophytes 

      Lopes Dos Santos, Adriana; Pollina, Thibaut; Gourvil, Priscillia; Corre, Erwan; Marie, Dominique; Garrido, Jose Luis; Rodriguez, Francisco; Noel, Mary-Helene; Vaulot, Daniel; Eikrem, Wenche (Journal article; Peer reviewed, 2017)
      Prasinophytes are a paraphyletic group of nine lineages of green microalgae that are currently classified either at the class or order level or as clades without formal taxonomic description. Prasinophyte clade VII comprises ...

    • 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 ...

    • Evaluering av ØKOKYST - stasjonsnett og klassegrenser 

      Walday, Mats Gunnar; Fagerli, Camilla With; Frigstad, Helene; Staalstrøm, Andre; Kaurin, Maria; Christensen, Guttorm; Trannum, Hilde Cecilie; Eikrem, Wenche (NIVA-rapport;7527, Research report, 2020)
      Overvåkingsprogrammet "Økosystemovervåking i Kystvann – ØKOKYST" har til hensikt å overvåke miljøtilstanden i utvalgte områder langs norskekysten i henhold til vannforskriften. Miljødirektoratet har bedt NIVA gjennomgå ...

    • Harmful algal blooms and their effects in coastal seas of Northern Europe 

      Karlson, Bengt; Andersen, Per; Arneborg, Lars; Cembella, Allan; Eikrem, Wenche; John, Uwe; West, Jennifer Joy; Klemm, Kerstin; Kobos, Justyna; Lehtinen, Sirpa; Lundholm, Nina; Mazur-Marzec, Hanna; Naustvoll, Lars Johan; Poelman, Marnix; Provoost, Pieter; De Rijcke, Maarten; Suikkanan, Sanna (Peer reviewed; Journal article, 2021)
      Harmful algal blooms (HAB) are recurrent phenomena in northern Europe along the coasts of the Baltic Sea, Kattegat-Skagerrak, eastern North Sea, Norwegian Sea and the Barents Sea. These HABs have caused occasional massive ...

    • Hvordan forebygge og håndtere episoder med skadelige alger og maneter i oppdrettsnæringen 

      Dale, Trine; Eikrem, Wenche; Glåmseter, Øystein; Feest, Patricio; Cisterna, Fernanda; Refseth, Gro Harlaug; Arnberg, Maj; Borch, Trude Kristin; Bahr, Gjermund; Halsband, Claudia; Leu, Eva; Camus, Lionel (NIVA-rapport;7843-2023, Research report, 2023)
      Dette er hovedrapport for prosjektet «Hvordan forebygge og håndtere episoder med skadelige alger og maneter i oppdrettsnæringen» finansiert av Fiskeri og havbruksnæringens forskningsfinansiering. Hovedmålet i prosjektet ...

    • Kartlegging av ålegrasenger (Zostera marina) etter ny metodikk i Innherred samkommune 

      Bekkby, Trine; Kile, Maia Røst; Brkljacic, Marijana Stenrud; Tveiten, Lise Ann; Eikrem, Wenche; Brænden, Roar (NIVA-rapport;7133, Research report, 2017-03)
      Det er viktig at forvaltere og planleggere har god oversikt og kunnskap om områder som er viktige for biologisk mangfold. Innherred samkommune ønsket derfor en oppdatert status for kjente ålegrasenger og kartlegging av ...

    • Klima-overblikk: Sammenstilling av klimarelevante resultater fra utvalgte overvåkingsprogram i kystsonen 

      Frigstad, Helene; Trannum, Hilde Cecilie; Andersen, Guri Sogn; Kristiansen, Trond; Norli, Marit; Gitmark, Janne Kim; Kaste, Øyvind; Løvoll, Grunde; Eikrem, Wenche (NIVA-rapport;7214-2017, Research report, 2017)
      Miljødirektoratet drifter Økosystemovervåking i kystvann (ØKOKYST), Elvetilførselsprogrammet, Havforsuringsprogrammet og finansierer delvis programmet Marin hardbunnsfauna langs kysten av Nord-Norge og Svalbard. NIVA gir ...

    • Mantoniella beaufortii and Mantoniella baffinensis sp. nov. (Mamiellales, Mamiellophyceae), two new green algal species from the high arctic 

      Yau, Sheree; Lopes dos Santos, Adriana; Eikrem, Wenche; Gérikas Ribeiro, Catherine; Gourvil, Priscillia; Balzano, Sergio; Escande, Marie-Line; Moreau, Hervé; Vaulot, Daniel (Peer reviewed; Journal article, 2019)
      Members of the class Mamiellophyceae comprise species that can dominate picophytoplankton diversity in polar waters. Yet, polar species are often morphologically indistinguishable from temperate species, although clearly ...

    • 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 ...

    • Olisthodiscus represents a new class of Ochrophyta 

      Barcytė, Dovilė; Eikrem, Wenche; Engesmo, Anette; Seoane, Sergio; Wohlmann, Jens; Horak, Ales; Yurchenko, Tatiana; Elias, Marek (Peer reviewed; Journal article, 2021)
      The phylogenetic diversity of Ochrophyta, a diverse and ecologically important radiation of algae, is still incompletely understood even at the level of the principal lineages. One taxon that has eluded simple classification ...

    • 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 ...

    • Revisjon av kystvannsdelen av veileder 02:2018 

      Walday, Mats Gunnar; Borgersen, Gunhild; Gitmark, Janne Kim; Engesmo, Anette; Fagerli, Camilla With; Staalstrøm, Andre; Gran, Sandra; Eikrem, Wenche (NIVA-rapport;7856-2023, Research report, 2023)
      NIVA har på oppdrag fra Miljødirektoratet utført oppgaver relatert til kystvannsdelen av veileder 02:2018 «Klassifisering av miljøtilstand i vann». Rapporten gir en beskrivelse av gjennomført arbeid og en rekke konkrete ...

    • Sampling protocol for monitoring of non-indigenous species in selected Danish harbours 

      Andersen, Jesper Harbo; Brink, Mathias; Kallenbach, Emilie; Hesselsøe, Martin; Knudsen, Steen W.; Støttrup, Josianne G.; Møller, Peter Rask; Eikrem, Wenche; Fagerli, Camilla With; Oug, Eivind (NIVA-rapport;7175, Research report, 2017)
      The sampling protocol is a product of the MONIS 4 project, or in full “Monitoring of non-indigenous species in selected Danish harbours”. Sampling will take place using a broad range of methods, both conventional sampling ...

    • 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 ...

    • Årsovervåking med FerryBox - Indre Oslofjord 2017-Datarapport 

      Norli, Marit; Eikrem, Wenche (NIVA-rapport;7266, Research report, 2018)
      Her rapporteres resultatene fra 2017 for årsovervåkingen med FerryBox i Indre Oslofjord for 2017. Undersøkelsene omfatter fysiske, kjemiske og biologiske forhold målt med FerryBox om bord på MS Color Fantasy. Målingene ...

    • Årsovervåking med FerryBox - Indre Oslofjord 2018 - Datarapport 

      Norli, Marit; Valestrand, Louise; Eikrem, Wenche (NIVA-rapport;7496, Research report, 2020)
      Her rapporteres resultatene fra 2018 for årsovervåkingen med FerryBox i Indre Oslofjord for 2018. Undersøkelsene omfatter fysiske, kjemiske og biologiske forhold målt med FerryBox om bord på MS Color Fantasy. Målingene ...

    • Årsovervåking med FerryBox - Indre Oslofjord 2019 - Datarapport 

      Sørensen, Kai; Eikrem, Wenche; Valestrand, Louise; Kristiansen, Trond; Norli, Marit (NIVA-rapport;7497, Research report, 2020)
      Her rapporteres resultatene for årsovervåkingen med FerryBox i Indre Oslofjord for 2019. Undersøkelsene omfatter fysiske, kjemiske og biologiske forhold målt med FerryBox om bord på MS Color Fantasy. Målingene omfatter ...