Browsing AURA by Author "Frigstad, Helene"
Now showing items 1-6 of 6
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Influence of Riverine Input on Norwegian Coastal Systems
Frigstad, Helene; Kaste, Øyvind; Deininger, Anne; Kvalsund, Karsten; Christensen, Guttorm; Bellerby, Richard; Sørensen, Kai; Norli, Marit; King, Andrew Luke (Peer reviewed; Journal article, 2020)Coastal ecosystems are of high ecological and socioeconomic importance and are strongly influenced by processes from land, sea, and human activities. In this study, we present physical, chemical, and biological observations ... -
The interplay between terrestrial organic matter and benthic macrofauna: Framework, synthesis, and perspectives
Pardo, Juan C. F.; Poste, Amanda E.; Frigstad, Helene; Quintana, Cintia O.; Trannum, Hilde C. (Peer reviewed; Journal article, 2023)Ecosystems are shaped by physical, chemical, and biological drivers, which affect the quality and quantity of basal energy sources, with impacts that cascade to higher trophic levels. In coastal, shelf, and marine habitats, ... -
Mulighetskartlegging for kystbaserte næringer i Agder
Frigstad, Helene; Dahl, Einar; Moy, Frithjof Emil; Næs, Kristoffer; Knutsen, Jan Atle; Kaste, Øyvind (NIVA-rapport;, Research report, 2017)I Agder er det et sterkt ønske fra kystkommunene om å tilrettelegge for blå vekst i regionen, men for å realisere dette målet er det behov for faktisk kunnskap om hvilke muligheter havet gir – og utelukker – langs hele ... -
Organic nitrogen steadily increasing in Norwegian rivers draining to the Skagerrak coast
Deininger, Anne; Kaste, Øyvind; Frigstad, Helene; Austnes, Kari (Peer reviewed; Journal article, 2020) -
Reevaluating the Role of Organic Matter Sources for Coastal Eutrophication, Oligotrophication, and Ecosystem Health
Deininger, Anne; Frigstad, Helene (Journal article; Peer reviewed, 2019)Organic matter (OM) in aquatic systems is either produced internally (autochthonous OM) or delivered from the terrestrial environment (ter-OM). For eutrophication (or the reverse – oligotrophication), the amount of ... -
Three decades of change in the Skagerrak coastal ecosystem, shaped by eutrophication and coastal darkening
Frigstad, Helene; Andersen, Guri Sogn; Trannum, Hilde Cecilie; Mcgovern, Maeve; Naustvoll, Lars Johan; Kaste, Øyvind; Deininger, Anne; Hjermann, Dag Øystein (Peer reviewed; Journal article, 2023)Global coastal ecosystems are under accelerating pressure from human activities and climate change. In this study we explore a long-term time series (mostly 1990–2016) from major Norwegian rivers, together with coastal ...