Hilde Cecilie Trannum

The importance of long-time series of benthic data for science and management

Silvana N R Birchenough, Eivind Oug, Jan Beermann, Nicolas Desroy et autres

Abstract Benthic organisms are important ecological receptors, playing fundamental roles across seafloor ecosystems, delivering some of the most important functions in the marine environment. Some of these key benthic functions include nutrient cycling, food provision for higher trophic levels, and carbon storage. …

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A marine and salt marsh sediment organic carbon database for European regional seas (EURO-CARBON)

Anna Elizabeth Løvgren Graversen, Christian Lønborg, Anna Maria Addamo, Stig Pedersen et autres

Marine and salt marsh sediments contain large amounts of organic carbon (OC) and are therefore important in the global carbon cycle. Here, we collated previously published and unpublished measurements of sediment OC in marine and salt marsh sediments in European regional seas …

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Hvordan påvirkes bunnfauna i en nordnorsk fjord av avgangsmasser fra en kobbergruve?

Anita Evenset, Paul E. Renaud, Hilde Cecilie Trannum, Guttorm Christensen et autres

Norge er en av få nasjoner i verden som tillater undersjøisk deponering av avgangsmasser fra gruvedrift. Tidligere tiders filosofi basert på "ute av syne, ute av sinn" er imidlertid ikke et argument som fungerer i dagens samfunn. Det har derfor vært et …

The interplay between terrestrial organic matter and benthic macrofauna: Framework, synthesis, and perspectives

Juan Carlos Farias Pardo, Amanda E. Poste, Helene Frigstad, Cintia Organo Quintana et autres

Abstract 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, terrestrial‐derived organic matter (ter‐OM) can be a key …

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Three decades of change in the Skagerrak coastal ecosystem, shaped by eutrophication and coastal darkening

Helene Frigstad, Guri Sogn Andersen, Hilde Cecilie Trannum, Maeve McGovern et autres

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 time series from the Norwegian Skagerrak coast. The aims are to: …

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Recolonization and recovery of an Arctic benthic community subject to mine-tailings deposits

Hilde Cecilie Trannum, Kristine Bondo Pedersen, Paul E. Renaud, Guttorm Christensen et autres

Deposition of large volumes of mine tailings takes place in several Norwegian fjords, but the impacts on marine ecosystems have received relatively little scientific attention. At a 40 + −year old tailing deposition area for a copper mine in the Arctic fjord …

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Recolonisation and Recovery of an Arctic Benthic Community Subject to Mine-Tailings Deposits

Hilde Cecilie Trannum, Kristine Bondo Pedersen, Paul E. Renaud, Guttorm Christensen et autres

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New insights into submarine tailing disposal for a reduced environmental footprint: Lessons learnt from Norwegian fjords

Eva Ramírez-Llodra, Hilde Cecilie Trannum, Guri Sogn Andersen, Nicole J. Baeten et autres

Submarine tailing disposal (STD) in fjords from land-based mines is common practice in Norway and takes place in other regions worldwide. We synthesize the results of a multidisciplinary programme on environmental impacts of STDs in Norwegian fjords, providing new knowledge that can …

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Long-term response of marine benthic fauna to thin-layer capping with powdered activated carbon in the Grenland fjords, Norway

Hilde Cecilie Trannum, Caroline Raymond, Rita Næss, Gunhild Borgersen et autres

The Grenland fjords in Norway have a long history of contamination by large emissions of dioxins and mercury. As a possible sediment remediation method in situ, thin-layer capping with powdered activated carbon (AC) mixed with clay was applied at two test sites …

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Økokyst – DP Norskehavet Sør (II). Årsrapport 2020.

Hilde Cecilie Trannum, Lars Gunder Golmen, Wenche Eikrem, Caroline Mengeot

Tiltaksorientert overvåking av sjøområdet utenfor Elkem Carbon og REC Solar i Kristiansand i 2020

Sigurd A. Øxnevad, Hilde Cecilie Trannum, Rita Næss, Jarle Håvardstun et autres

NIVA har gjennomført tiltaksorientert overvåking av sjøområdet utenfor Elkem Carbon og REC Solar i Kristiansand i 2020. I overvåkingen er det gjort analyser av polysykliske aromatiske hydrokarboner (PAH-forbindelser), tungmetaller (arsen, bly, kadmium, kobber, krom, kvikksølv, nikkel og sink), silisium og kalsium i …

Økokyst – DP Skagerrak. Årsrapport 2020.

Hilde Cecilie Trannum, André Staalstrøm, Wenche Eikrem, Anne Deininger et autres