Browsing NIVA Open Access Archive by Author "Helberg, Morten"

Now showing items 1-11 of 11

    • Common eider and herring gull as contaminant indicators of different ecological niches of an urban fjord system 

      Thorstensen, Helene; Ruus, Anders; Helberg, Morten; Bæk, Kine; Enge, Ellen Katrin; Borgå, Katrine (Peer reviewed; Journal article, 2020)
      Seabirds like gulls are common indicators in contaminant monitoring. The herring gull (Larus argentatus) is a generalist with a broad range of dietary sources, possibly introducing a weakness in its representativeness of ...

    • Differences in Trophic Level, Contaminant Load, and DNA Damage in an Urban and a Remote Herring Gull (Larus argentatus) Breeding Colony in Coastal Norway 

      Keilen, Ellen Kristine; Borgå, Katrine; Thorstensen, Helene Skjeie; Hylland, Ketil; Helberg, Morten; Warner, Nicholas Alexander; Bæk, Kine; Reiertsen, Tone Kristin; Ruus, Anders (Peer reviewed; Journal article, 2022)
      Herring gulls (Larus argentatus) are opportunistic feeders, resulting in contaminant exposure depending on area and habitat. We compared contaminant concentrations and dietary markers between two herring gull breeding ...

    • Environmental Contaminants in an Urban Fjord 

      Ruus, Anders; Allan, Ian; Beylich, Bjørnar; Bæk, Kine; Schlabach, Martin; Helberg, Morten (NIVA-rapport;6714, Research report, 2014)
      This programme, “Environmental Contaminants in an Urban Fjord” has covered sampling and analysis of organisms in a marine food web of the Inner Oslofjord, in addition to samples of sediment, blue mussel and polychaetes at ...

    • Environmental Contaminants in an Urban Fjord, 2014 

      Ruus, Anders; Allan, Ian; Beylich, Bjørnar; Bæk, Kine; Schlabach, Martin; Helberg, Morten (NIVA-rapport;6884, Research report, 2015)
      This programme, “Environmental Contaminants in an Urban Fjord” has covered sampling and analysis of organisms in a marine food web of the Inner Oslofjord, in addition to samples of sediment, blue mussel and polychaetes at ...

    • Environmental Contaminants in an Urban Fjord, 2015 

      Ruus, Anders; Bæk, Kine; Petersen, Karina; Allan, Ian; Beylich, Bjørnar; Schlabach, Martin; Warner, Nicholas; Helberg, Morten (NIVA-rapport;7073, Research report, 2016)
      This programme, “Environmental Contaminants in an Urban Fjord” has covered sampling and analysis of sediment and organisms in a marine food web of the Inner Oslofjord, in addition to samples of blood and eggs from herring ...

    • Environmental Contaminants in an Urban Fjord, 2017 

      Ruus, Anders; Bæk, Kine; Petersen, Karina; Allan, Ian; Beylich, Bjørnar; Schlabach, Martin; Warner, Nicholas Alexander; Borgå, Katrine; Helberg, Morten (NIVA-rapport;7368, Research report, 2018)
      This programme, “Environmental Contaminants in an Urban Fjord” has covered sampling and analyses of sediment and organisms in a marine food web of the Inner Oslofjord, in addition to samples of blood and eggs from herring ...

    • Environmental Contaminants in an Urban Fjord, 2018 

      Ruus, Anders; Bæk, Kine; Rundberget, Thomas; Allan, Ian; Beylich, Bjørnar; Schlabach, Martin; Warner, Nicholas Alexander; Borgå, Katrine; Helberg, Morten (NIVA-rapport;7410, Research report, 2019)
      This programme, “Environmental Contaminants in an Urban Fjord” has covered sampling and analyses of sediment and organisms in a marine food web of the Inner Oslofjord, in addition to samples of blood and eggs from herring ...

    • Environmental Contaminants in an Urban Fjord, 2019 

      Ruus, Anders; Bæk, Kine; Rundberget, Thomas; Allan, Ian; Beylich, Bjørnar; Vogelsang, Christian; Schlabach, Martin; Götsch, Arntraut; Borgå, Katrine; Helberg, Morten (NIVA-rapport;7555, Research report, 2020)
      This programme, “Environmental Contaminants in an Urban Fjord” has covered sampling and analyses of sediment and organisms in a marine food web of the Inner Oslofjord, in addition to samples of blood and eggs from herring ...

    • Environmental Contaminants in an Urban Fjord, 2020 

      Grung, Merete; Jartun, Morten; Bæk, Kine; Ruus, Anders; Rundberget, Thomas; Allan, Ian; Beylich, Bjørnar; Vogelsang, Christian; Schlabach, Martin; Hanssen, Linda; Borgå, Katrine; Helberg, Morten (NIVA-rapport;7674, Research report, 2021)
      This programme, “Environmental Contaminants in an Urban Fjord” has covered sampling and analyses of sediment and organisms in a marine food web of the Inner Oslofjord, in addition to samples of blood and eggs from herring ...

    • Environmental Contaminants in an Urban Fjord, 2022 

      Ruus, Anders; Grung, Merete; Jartun, Morten; Bæk, Kine; Rundberget, Thomas; Beylich, Bjørnar; Hanssen, Linda; Borgå, Katrine; Helberg, Morten (NIVA-rapport;7873-2033, Research report, 2023)
      This report presents data from the second year of a new 5-year period of the Urban Fjord programme. The programme started in 2013 and has since been altered/advanced. In 2022 the programme covers sampling and analyses of ...

    • Maternal transfer and occurrence of siloxanes, chlorinated paraffins, metals, PFAS and legacy POPs in herring gulls (Larus argentatus) of different urban influence 

      Knudtzon, Nina Cathrine; Thorstensen, Helene; Ruus, Anders; Helberg, Morten; Bæk, Kine; Enge, Ellen Katrin; Borgå, Katrine (Peer reviewed; Journal article, 2021)
      Urban herring gulls (Larus argentatus) are exposed to contaminants from aquatic, terrestrial and anthropogenic sources. We aim to assess if differences in urbanisation affect ecological niche and contaminant concentrations ...