Blar i NIVA Open Access Archive på forfatter "Olsen, Marianne"
-
Quantification of Riverbank Macroplastic Contamination in The Lower Citarum River
Hidayat, H.; Aisyah, S.; Husrin, S.; Hermana, I.S.; Hurley, Rachel; Olsen, Marianne (Peer reviewed; Journal article, 2022)Plastic waste generation has been increasing over the last decades. Rivers represent complex environments where plastics may be stored and remobilized. Studies on riverine plastic, including riverbank contamination, are ... -
Riverine Plastic Monitoring during the Rainy Season in the Citarum Estuary of Muara Gembong
Husrin, S.; Hidayat, H.; Rahmadya, A.; Aisyah, S.; Hurley, Rachel; Braaten, Hans Fredrik Veiteberg; Olsen, Marianne (Peer reviewed; Journal article, 2022)The restoration effort to clean up the river, known as "Citarum Harum" requires monitoring to estimate both the composition and the volumes of plastic pollution. The objective of the monitoring is to obtain a scientific ... -
Status of contaminated marine sediments in four Nordic countries: assessments, regulations, and remediation approaches
Lehoux, Alizée P.; Petersen, Karina; Leppänen, Matti T.; Snowball, Ian; Olsen, Marianne (Peer reviewed; Journal article, 2020)Purpose Since the 1960s, pollution of the marine environment has been observed around the world, and a general awareness of the potential environmental hazards from contaminants arose. This general awareness was followed ... -
Testing of methodology for measuring microplastics in blue mussels (Mytilus spp) and sediments, and recommendations for future monitoring of microplastics (R & D-project)
Lusher, Amy; Bråte, Inger Lise Nerland; Hurley, Rachel; Iversen, Karine; Olsen, Marianne (NIVA-rapport;7209, Research report, 2017-12)Miljødirektoratet tasked NIVA to investigate methods used for the extraction of microplastics from environmental samples of blue mussels and marine sediment. Presented here are the results of methods tested, as well as ... -
The influence of a submerged meadow on uptake and trophic transfer of legacy mercury from contaminated sediment in the food web in a brackish Norwegian fjord
Olsen, Marianne; Fjeld, Eirik; Lydersen, Espen (Journal article; Peer reviewed, 2019)There are contradicting results on the importance of legacy mercury (Hg) contaminated sediments to Hg fish tissue concentrations. Still, sediment remediation actions often aim at minimizing ecosystem exposure and human ... -
The influence of permanently submerged macrophytes on sediment mercury distribution, mobility and methylation potential in a brackish Norwegian fjord
Olsen, Marianne; Schaanning, Morten; Braaten, Hans Fredrik Veiteberg; Eek, Espen; Moy, Frithjof Emil; Lydersen, Espen (Journal article; Peer reviewed, 2018)Macrophytes are shown to affect the microbial activity in different aqueous environments, with an altering of the sediment cycling of mercury (Hg) as a potential effect. Here, we investigated how a meadow with permanently ... -
Tiltaksplan for forurenset sjøbunn utenfor Elkem Carbon AS, Kristiansand
Olsen, Marianne; Næs, Kristoffer; Schaanning, Morten; Øxnevad, Sigurd; Håvardstun, Jarle; Allan, Ian; Sayfritz, Stephen John; Petersen, Karina (NIVA-rapport;7276, Research report, 2018)Elkem Carbon AS har engasjert NIVA for å utarbeide en tiltaksplan for opprydding i forurenset sjøbunn utenfor bedriften i Kristiansand. Behovet for å vurdere tiltak henger sammen med at overvåkingsresultater og risikovurdering ... -
Validation of a Method for Extracting Microplastics from Complex, Organic-Rich, Environmental Matrices
Hurley, Rachel R; Lusher, Amy L; Olsen, Marianne; Nizzetto, Luca (Journal article; Peer reviewed, 2018)Complex and organic-rich solid substrates such as sludge and soil have been shown to be contaminated by microplastics; however, methods for extracting plastic particles have not yet been systemically tested or standardized. ...