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Book ; Conference proceedings ; Online: Prokaryotic growth and presence of metabolic products and contamination tracers in rocks samples from ODP Leg 187 sites, supplementary data to: Lysnes, Kristine; Torsvik, Terje; Thorseth, Ingunn H; Pedersen, Rolf B (2004): Microbial populations in ocean floor basalt: results from ODP Leg 187. In: Pedersen, RB; Christie, DM; Miller, DJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 187, 1-27

Lysnes, Kristine / Pedersen, Rolf B / Thorseth, Ingunn H / Torsvik, Terje

2004

Abstract: The microbial population in samples of basalt drilled from the north of the Australian Antarctic Discordance (AAD) during Ocean Drilling Program Leg 187 were studied using deoxyribonucleic acid (DNA)-based methods and culturing techniques. The results ... ...

Abstract	The microbial population in samples of basalt drilled from the north of the Australian Antarctic Discordance (AAD) during Ocean Drilling Program Leg 187 were studied using deoxyribonucleic acid (DNA)-based methods and culturing techniques. The results showed the presence of a microbial population characteristic for the basalt environment. DNA sequence analysis revealed that microbes grouping within the Actinobacteria, green nonsulfur bacteria, the Cytophaga/Flavobacterium/Bacteroides (CFB) group, the Bacillus/Clostridium group, and the beta and gamma subclasses of the Proteobacteria were present in the basalt samples collected. The most dominant phylogenetic group, both in terms of the number of sequences retrieved and the intensities of the DNA bands obtained with the denaturing gradient gel electrophoresis analysis, was the gamma Proteobacteria. Enrichment cultures showed phylogenetic affiliation with the Actinobacteria, the CFB group, the Bacillus/Clostridium group, and the alpha, beta, gamma, and epsilon subclasses of the Proteobacteria. Comparison of native and enriched samples showed that few of the microbes found in native basalt samples grew in the enrichment cultures. Only seven clusters, two clusters within each of the CFB and Bacillus/Clostridium groups and five clusters within the gamma Proteobacteria, contained sequences from both native and enriched basalt samples with significant similarity. Results from cultivation experiments showed the presence of the physiological groups of iron reducers and methane producers. The presence of the iron/manganese-reducing bacterium Shewanella was confirmed with DNA analysis. The results indicate that iron reducers and lithotrophic methanogenic Archaea are indigenous to the ocean crust basalt and that the methanogenic Archaea may be important primary producers in this basaltic environment.
Language	English
Dates of publication	2004-9999
Size	Online-Ressource
Publisher	PANGAEA - Data Publisher for Earth & Environmental Science
Publishing place	Bremen/Bremerhaven
Document type	Book ; Conference proceedings ; Online
Note	This dataset is supplement to doi:10.2973/odp.proc.sr.187.203.2004
DOI	10.1594/PANGAEA.781233
Database	Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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Article ; Online: Recolonization and recovery of an Arctic benthic community subject to mine-tailings deposits

Trannum, Hilde C. / Pedersen, Kristine B. / Renaud, Paul E. / Christensen, Guttorm N. / Evenset, Anita

Journal of Sea Research. 2023 Feb., v. 191 p.102327-

2023

Abstract: 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 ... ...

Abstract	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 Repparfjorden, we investigated both short-term colonization of mine tailings-contaminated sediments through a field experiment, and the present faunal state in the old deposit area. Copper-concentrations at the old deposition site were still high (up to 291 mg/kg dry weight (dw)), and exceeded the Norwegian environmental-quality threshold (84 mg/kg dw). Furthermore, copper was identified as a significant structuring factor for the fauna in the fjord, although faunal diversity was relatively high and the community not severely disturbed. In the colonization experiment, experimental boxes filled with defaunated sediment capped with mine tailings were subject to colonization for 15 months. Benthic macrofaunal communities were successfully established in all boxes, but the boxes with tailings showed lower species richness, abundance and biomass than the controls. Mine tailings continue to have local impacts on seafloor communities decades after deposition, and even low levels of metal-rich sediments can affect faunal recruitment. These results have implications for submarine deposition of mining waste and the impacts they have on coastal ecosystems.
Keywords	benthic organisms ; biomass ; copper ; environmental quality ; fauna ; field experimentation ; fjord inlets ; research ; sediments ; species richness ; wastes ; Submarine tailing disposal ; Colonization ; Recovery ; Benthos ; Repparfjorden
Language	English
Dates of publication	2023-02
Publishing place	Elsevier B.V.
Document type	Article ; Online
Note	Use and reproduction
ISSN	1385-1101
DOI	10.1016/j.seares.2022.102327
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Impacts of climate change on metal leaching and partitioning for submarine mine tailings disposal.

Pedersen, Kristine B / Lejon, Tore / Jensen, Pernille E / Ottosen, Lisbeth M / Frantzen, Marianne / Evenset, Anita

Marine pollution bulletin

2022 Volume 184, Page(s) 114197

Abstract: At present, there are no standardised tests to assess metal leaching during submarine tailings discharge. In this study the influence of variables known to affect metal mobility and availability (dissolved organic carbon (DOC), pH, salinity, temperature, ...

Abstract	At present, there are no standardised tests to assess metal leaching during submarine tailings discharge. In this study the influence of variables known to affect metal mobility and availability (dissolved organic carbon (DOC), pH, salinity, temperature, aerated/anoxic conditions) along with variables affected by the discharge conditions (flocculant concentration, suspension) were studied in bench-scale experiments. The leaching tests were developed based on the case of a copper mine by Repparfjorden, northern Norway, which is planned to re-open in 2022. The experiments, which had three week duration, revealed low (<6 %) leaching of metals. Multivariate analysis showed that all variables, apart from DOC, highly influenced leaching and partitioning of at least one metal (Ba, Cr, Cu, and/or Mn). The high quantity of the planned annual discharge of mine tailings to the fjord (1-2 million tonnes) warranted estimation of the leached quantity of metals. Multivariate models, using present-day conditions in the fjord, estimated leaching of up to 124 kg Ba, 154 kg Cu and 2400 kg Mn per year during discharge of tailings. Future changes in the fjord conditions caused by climate change (decreased pH, increased temperature) was predicted by the multivariate models to increase the leaching up to 55 %, by the year 2065. The bench-scale experiments demonstrated the importance of including relevant variables (such as pH, salinity, and temperature) for metal leaching and -partitioning in leaching tests. The results showed that metal leaching during discharge is expected and will increase in the future due to the changed conditions caused by the foreseen climate change, and thereby underline the importance of monitoring metal concentrations in water during operations to determine the fate of metals in the fjord.
MeSH term(s)	Copper/analysis ; Environmental Monitoring/methods ; Climate Change ; Metals/analysis ; Water/analysis ; Metals, Heavy/analysis
Chemical Substances	Copper (789U1901C5) ; Metals ; Water (059QF0KO0R) ; Metals, Heavy
Language	English
Publishing date	2022-10-05
Publishing country	England
Document type	Journal Article
ZDB-ID	2001296-2
ISSN	1879-3363 ; 0025-326X
ISSN (online)	1879-3363
ISSN	0025-326X
DOI	10.1016/j.marpolbul.2022.114197
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Associations Between Physical Activity and Gastrointestinal Transit Times in People with Normal Weight, Overweight, and Obesity.

Jensen, Marie M / Pedersen, Hanne E / Clemmensen, Kim K B / Ekblond, Trine S / Ried-Larsen, Mathias / Færch, Kristine / Brock, Christina / Quist, Jonas S

The Journal of nutrition

2023 Volume 154, Issue 1, Page(s) 41–48

Abstract: Background: Rapid gastric emptying is associated with obesity and overeating, whereas delayed gastric emptying is associated with anorexia. Acute effects of exercise on gastric emptying have been investigated extensively, but the influence of habitual ... ...

Abstract	Background: Rapid gastric emptying is associated with obesity and overeating, whereas delayed gastric emptying is associated with anorexia. Acute effects of exercise on gastric emptying have been investigated extensively, but the influence of habitual physical activity on gastric emptying and transit time in other regions of the gastrointestinal tract is poorly understood. Objective: The objective was to investigate associations between objectively measured habitual physical activity and gastrointestinal transit times in adults with varying degrees of adiposity. Methods: 50 adults (58% women) were included in this cross-sectional study. Physical activity was measured by an accelerometer placed on the lower back for 7 d. Gastric emptying time, small bowel transit time, colonic transit time, and whole gut transit time were simultaneously evaluated by a wireless motility capsule, which was ingested together with a standardized mixed meal. Linear regression models were applied to assess the associations of total activity counts and time spent at different intensities-sedentary activity (0-100 counts/min), low light activity (101-759 counts/min), high light activity (760-1951 counts/min); moderate and vigorous activity (≥1952 counts/min)) with gastrointestinal transit times. Results: Median [Q1; Q3] age was 56.5 [46.6-65.5] y, and body mass index (BMI) was 32.1 [28.5-35.1] kg/m Conclusions: More time spent on physical activity at high light intensity was associated with more rapid colonic and whole gut transit time, independent of age, sex, and body fat, whereas other intensities of physical activity and gastrointestinal transit times were not associated. Trial registration: Clinicaltrials.gov IDs (NCT03894670, NCT03854656).
MeSH term(s)	Adult ; Humans ; Female ; Male ; Gastrointestinal Transit ; Overweight ; Cross-Sectional Studies ; Obesity ; Exercise ; Gastric Emptying
Language	English
Publishing date	2023-06-12
Publishing country	United States
Document type	Journal Article
ZDB-ID	218373-0
ISSN	1541-6100 ; 0022-3166
ISSN (online)	1541-6100
ISSN	0022-3166
DOI	10.1016/j.tjnut.2023.06.005
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Article ; Online: Structures and Role of the Intermediate Phases on the Crystallization of BaTiO

Bakken, Kristine / Pedersen, Viviann H / Blichfeld, Anders B / Nylund, Inger-Emma / Tominaka, Satoshi / Ohara, Koji / Grande, Tor / Einarsrud, Mari-Ann

ACS omega

2021 Volume 6, Issue 14, Page(s) 9567–9576

Abstract: Carbonate formation is a prevailing challenge in synthesis of ... ...

Abstract	Carbonate formation is a prevailing challenge in synthesis of BaTiO
Language	English
Publishing date	2021-03-30
Publishing country	United States
Document type	Journal Article
ISSN	2470-1343
ISSN (online)	2470-1343
DOI	10.1021/acsomega.1c00089
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Comparison of 2- and 3-compartment electrodialytic remediation cells for oil polluted soil from northwest Russia.

Shouli Pour, Fatemeh / Jensen, Pernille E / Pedersen, Kristine B / Lejon, Tore

Environmental technology

2020 Volume 42, Issue 25, Page(s) 3900–3906

Abstract: Electrodialytic remediation is a method based on electrokinetics, in which an electric field of low intensity increases the availability of pollutants in solid waste materials. The electric field induces processes that mobilise and transport inorganic ... ...

Abstract	Electrodialytic remediation is a method based on electrokinetics, in which an electric field of low intensity increases the availability of pollutants in solid waste materials. The electric field induces processes that mobilise and transport inorganic and organic pollutants. The transport of ions in the electrodialytic cell is controlled by employing ion-exchange membranes, allowing separation of the electrodes from the solids. In this study, using a two cell design, electrodialytic experiments were conducted to compare remediation of a heavily oil-polluted soil from Arkhangelsk, Russia. The 2-compartment cell has not previously been employed for electrodialytic removal of organic pollutants and was tested along with the traditional 3-compartment design. The influence of experimental variables (current density, remediation time, stirring and light) and settings on the two cell designs was investigated. The highest removal (77%) of total hydrocarbons (THC) was observed in the 3-compartment cell at high current density (0.68 mA/cm
MeSH term(s)	Electrodes ; Environmental Pollutants ; Environmental Pollution ; Environmental Restoration and Remediation ; Soil ; Soil Pollutants/analysis
Chemical Substances	Environmental Pollutants ; Soil ; Soil Pollutants
Language	English
Publishing date	2020-04-08
Publishing country	England
Document type	Journal Article
ISSN	1479-487X
ISSN (online)	1479-487X
DOI	10.1080/09593330.2020.1749943
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Structures and Role of the Intermediate Phases on the Crystallization of BaTiO3 from an Aqueous Synthesis Route

Kristine Bakken / Viviann H. Pedersen / Anders B. Blichfeld / Inger-Emma Nylund / Satoshi Tominaka / Koji Ohara / Tor Grande / Mari-Ann Einarsrud

ACS Omega, Vol 6, Iss 14, Pp 9567-

2021 Volume 9576

Keywords	Chemistry ; QD1-999
Language	English
Publishing date	2021-03-01T00:00:00Z
Publisher	American Chemical Society
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Comparison of 2- and 3-compartment electrodialytic remediation cells for oil polluted soil from northwest Russia

Shouli Pour, Fatemeh / Jensen, Pernille E. / Pedersen, Kristine B. / Lejon, Tore

Environmental technology. 2021 Nov. 10, v. 42, no. 25

2021

Abstract	Electrodialytic remediation is a method based on electrokinetics, in which an electric field of low intensity increases the availability of pollutants in solid waste materials. The electric field induces processes that mobilise and transport inorganic and organic pollutants. The transport of ions in the electrodialytic cell is controlled by employing ion-exchange membranes, allowing separation of the electrodes from the solids. In this study, using a two cell design, electrodialytic experiments were conducted to compare remediation of a heavily oil-polluted soil from Arkhangelsk, Russia. The 2-compartment cell has not previously been employed for electrodialytic removal of organic pollutants and was tested along with the traditional 3-compartment design. The influence of experimental variables (current density, remediation time, stirring and light) and settings on the two cell designs was investigated. The highest removal (77%) of total hydrocarbons (THC) was observed in the 3-compartment cell at high current density (0.68 mA/cm²), longer remediation time (28 days), stirring and exposure to daylight. High current density and stirring increased the removal efficiencies in both cell designs. Within the studied experimental domain, the removal efficiencies in the 3-compartment cell (10–77%) were, however, higher than those observed in the 2-compartment cell (0–38%).
Keywords	Russia ; electric field ; environmental technology ; ion exchange ; oils ; remediation ; solar radiation ; solid wastes
Language	English
Dates of publication	2021-1110
Size	p. 3900-3906.
Publishing place	Taylor & Francis
Document type	Article
ISSN	1479-487X
DOI	10.1080/09593330.2020.1749943
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Effects of mine tailings exposure on early life stages of atlantic cod.

Reinardy, Helena C / Pedersen, Kristine B / Nahrgang, Jasmine / Frantzen, Marianne

Environmental toxicology and chemistry

2019 Volume 38, Issue 7, Page(s) 1446–1454

Abstract: In Norway, mine tailings waste can be deposited by coastal submarine dispersal. Mine tailings slurry includes fine particles <10 µm with elevated levels of metals (e.g., copper, iron) from residual mineral ore. Prolonged suspension of small particles in ... ...

Abstract	In Norway, mine tailings waste can be deposited by coastal submarine dispersal. Mine tailings slurry includes fine particles <10 µm with elevated levels of metals (e.g., copper, iron) from residual mineral ore. Prolonged suspension of small particles in the water column may bring them into contact with locally spawned pelagic fish eggs, including Atlantic cod, Gadus morhua. Newly fertilized cod embryos were exposed to suspended mine tailings particles up to 3.2 mg/L in flow-through aquaria for a total of 21 d. Significantly more particles adhered to the surface of the chorion from the high treatment after 11-d exposure, and dissolved Cu concentrations increased in the water (up to 0.36 ± 0.06 µg/L). There was no adverse effect on embryo mortality but an 8% elevation in larval mortality. There were no differences with treatment on timing of hatching, embryo and larva morphometrics, abnormalities, or cardiac activity. There was a treatment-dependent up-regulation of stress marker genes (hspa8, cyp1c1) but no indication of metal-induced activation of metallothionien (mt gene transcription). Transcription markers for DNA and histone methyltransferases did show treatment-related up-regulation, indicative of altered methylation in larvae when developmental methylation patterns are determined, indicating some level of chronic toxicity that may have longer-term effects. Environ Toxicol Chem 2019;38:1446-1454. © 2019 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals, Inc. on behalf of SETAC.
MeSH term(s)	Animals ; Copper/analysis ; Copper/toxicity ; DNA-Cytosine Methylases/genetics ; DNA-Cytosine Methylases/metabolism ; Embryo, Nonmammalian/drug effects ; Embryonic Development/drug effects ; Gadus morhua/growth & development ; HSC70 Heat-Shock Proteins/genetics ; HSC70 Heat-Shock Proteins/metabolism ; Histone Methyltransferases/genetics ; Histone Methyltransferases/metabolism ; Larva/drug effects ; Metals/analysis ; Metals/toxicity ; Mining ; Spectrophotometry ; Up-Regulation/drug effects
Chemical Substances	HSC70 Heat-Shock Proteins ; Metals ; Copper (789U1901C5) ; DNA-Cytosine Methylases (EC 2.1.1.-) ; Histone Methyltransferases (EC 2.1.1.-)
Language	English
Publishing date	2019-06-20
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	46234-2
ISSN	1552-8618 ; 0730-7268
ISSN (online)	1552-8618
ISSN	0730-7268
DOI	10.1002/etc.4415
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Article ; Online: Comparison of two- and three-compartment cells for electrodialytic removal of heavy metals from contaminated material suspensions.

Kirkelund, Gunvor M / Jensen, Pernille E / Ottosen, Lisbeth M / Pedersen, Kristine B

Journal of hazardous materials

2018 Volume 367, Page(s) 68–76

Abstract: Electrodialytic remediation can be applied to remove heavy metals from contaminated particulate materials in suspension. The applied electric current is the cleaning agent and the heavy metals are removed by electromigration. In this study, a two- ... ...

Abstract	Electrodialytic remediation can be applied to remove heavy metals from contaminated particulate materials in suspension. The applied electric current is the cleaning agent and the heavy metals are removed by electromigration. In this study, a two-compartment cell was compared to a three-compartment cell, for several contaminated materials such as soils, sediments, mine tailings and ashes and totally 20 experiments were conducted. The pH decrease was faster in the two-compartment cell, but the metal removal was higher in the three-compartment cell since anionic metal species are removed from the material suspension in this cell set-up. For materials with relatively high chloride content, fly ash and harbour sediments, up to 38% of the metals were found in the filtrate in the two-compartment cell. Up to 9% of the current was used to transport heavy metal ions in the experiments and the current was mainly carried by H
Language	English
Publishing date	2018-12-18
Publishing country	Netherlands
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2018.12.063
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