English
norskBlar i forfatter "Junttila, Juho"
Viser treff 1-13 av 13
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Benthic foraminifera as bio-indicators of chemical and physical stressors in Hammerfest harbor (Northern Norway)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-01)We investigated benthic foraminiferal assemblages in contaminated sediments in a subarctic harbor of northern Norway to assess their utility as indicators of anthropogenic impacts. Sediments in the harbor are repositories for POPs and heavy metals supplied through discharges from industry and shipping activities. Sediment contaminant concentrations are at moderate to poor ecological quality ... -
Benthic foraminiferal growth seasons implied from Mg/Ca-temperature correlations for three Arctic species
(Peer reviewed; Journal article; Tidsskriftsartikkel, 2016-11-22)Core-top sediment samples from Kongsfjorden, Svalbard, and adjacent fjord and shelf areas were collected in order to investigate a potential relationship between Mg/Ca-ratios of Arctic benthic foraminifera and the ambient bottom water temperatures (BWT). The area is influenced by large seasonal variation in factors such as light and temperature, which is further strengthened by oceanographic shifts, ... -
Environmental baselines and reconstruction of Atlantic Water inflow in Bjørnøyrenna, SW Barents Sea, since 1800 CE
(Journal article; Tidsskriftartikkel, 2017-10-28)Metal concentrations, sediment properties and benthic foraminiferal assemblages were investigated in sediment cores in the SW Barents Sea, to reconstruct environmental baselines and natural variability of Atlantic Water inflow since 1800 CE. Metal concentrations correspond to no effect levels and do not influence the foraminifera. Increased Hg and Pb was linked to inflow of Atlantic Water. The data ... -
Food/feed and environmental risk assessment of genetically modified glufosinate-tolerant oilseed rape MS8, RF3 and MS8 x RF3 for import, processing and feed uses under Directive 2001/18/EC (Notification C/BE/96/01)
(Research report; Forskningsrapport, 2014-03-28)In preparation for a legal implementation of EU-regulation 1829/2003, the Norwegian Environment Agency (former Norwegian Directorate for Nature Management) has requested the Norwegian Food Safety Authority (NFSA) to give final opinions on all genetically modified organisms (GMOs) and products containing or consisting of GMOs that are authorized in the European Union ... -
Foreløpig helse- og miljørisikovurdering av genmodifisert maislinje Event 5307 fra Syngenta Crop Protection AG (EFSA/GMO/DE/2011/95)
(Research report; Forskningsrapport, 2011-11-25)Den foreløpige helse- og miljørisikovurderingen av insektresistent maislinje 5307 (EFSA/GMO/DE/2011/95) fra Syngenta Crop Protection AG er utført av Faggruppe for genmodifiserte organismer i Vitenskapskomiteen for mattrygghet (VKM). Vitenskapskomiteen for mattrygghet er bedt av Mattilsynet og Direktoratet for naturforvalting ... -
Foreløpig helse- og miljørisikovurdering av genmodifisert soyalinje MON 87769 fra Monsanto Company (EFSA/GMO/UK/2009/76). Uttalelse fra Faggruppe for genmodifiserte organismer i Vitenskapskomiteen for mattrygghet. Innspill til EFSAs GMO Extranet
(Research report; Forskningsrapport, 2011-02-18)Helse- og miljørisikovurderingen av den genmodifiserte soyalinjen MON 87769 (EFSA/GMO/UK/2009/76) fra Monsanto er utført av Faggruppe for genmodifiserte organismer i Vitenskapskomiteen for mattrygghet. Mattilsynet og Direktoratet for naturforvaltning (DN) ber Vitenskapskomiteen for mattrygghet om å vurdere den genmodifiserte soyalinjen MON 87769 til bruk i næringsmidler og fôrvarer, men ikke til ... -
Identifying past petroleum exploration related drill cutting releases and influences on the marine environment and benthic foraminiferal communities, Goliat Field, SW Barents Sea, Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-01)The present multiproxy investigation of marine sediment cores aims at: 1) Identifying dispersion of petroleum exploration related drill cutting releases within the Goliat Field, Barents Sea in 2006/07 and 2) Assessing past and present influence of drill cuttings on the marine environment. The cores were recovered 5, 30, 60, 125 and 250 m from the drill site in the eastward downstream direction.<p> ... -
Impact of drill cutting releases on benthic foraminifera at three exploration wells drilled between 1992 and 2012 in the SW Barents Sea, Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-04)The aim of this study is to identify the environmental impact of drill cuttings (DC) released around three wells drilled in 1992, 2000 and 2012 in the SW Barents Sea. Foraminiferal assemblages are studied in cores taken along transects <250 m from wells. Well E-1992 shows no impact of DC on foraminifera indicating that low amounts of released DC limit environmental impact. Impact at wells G-2000 and ... -
The impact of submarine copper mine tailing disposal from the 1970s on Repparfjorden, northern Norway
(Journal article; Tidsskriftartikkel, 2017-05-10)We investigate the state of sedimentological environment and contaminant status of Repparfjorden (N Norway) impacted by submarine disposal of mine tailings during the 1970s using sedimentological and geochemical properties of seventeen sediment cores. The impact of tailings disposal is mainly restricted to the inner fjord where the discharge occurred. Sediment cores retrieved from the inner fjord ... -
Natural variability of benthic foraminiferal assemblages and metal concentrations during the last 150 years in the Ingøydjupet trough, SW Barents Sea.
(Journal article; Tidsskriftartikkel, 2015-12)While today the SW Barents Sea is a relatively un-impacted and uncontaminated area, industrial activities related to the petroleum industry are projected to increase in the coming decades. This makes the area a valuable natural laboratory to establish pre-impacted baselines as a precursor for future seabed monitoring programs. Here we present benthic foraminiferal assemblages and metal concentrations ... -
Spreading of drill cuttings and sediment recovery of three exploration wells of different ages, SW Barents Sea, Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-07-14)Five stations (≤250 m from the well heads) from three exploration wells of different ages from the SW Barents Sea were studied to investigate the spreading of drill cuttings and sediment quality. Two of the wells were drilled before the restriction of use of oil-based drilling fluids (1993). Elevated concentrations of Ba were found in sediments near all the wells with the highest concentrations ... -
Stability of Cu-Sulfides in Submarine Tailing Disposals: A Case Study from Repparfjorden, Northern Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-13)Mine tailings that were produced during the exploitation of the Ulveryggen siliciclastic sediment-hosted Cu deposit in northern Norway were disposed into the inner part of Repparfjorden from 1972 to 1978/1979. This study focuses on the mineralogy and geochemistry of the submarine mine tailings and underlying natural marine sediments from the inner part of Repparfjorden, as well as on the primary ... -
Variability of present and past PAH concentrations in sediments of the SW Barents Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10-09)The concentration and distribution of polyaromatic hydrocarbons (PAHs) in surface and subsurface sediment samples from Tromsøflaket and Ingøydjupet, southwestern Barents Sea, were investigated in order to provide insight into the levels and origins of PAHs in a region with petroleum activities. PAH profiles in sediments were evaluated in context with sediment grain size and total organic carbon ...
