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  • 1.
    Bjurlid, Filip
    et al.
    Örebro universitet.
    Roos, Anna
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Hagberg, J
    Temporal trends of PBDD/Fs, PCDD/Fs, PBDEs and PCBs in ringed seals from the Baltic Sea (Pusa hispida botnica) between 1974 and 20152018Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 616-617, s. 1374-1383Artikel i tidskrift (Refereegranskat)
  • 2.
    Campeau, Audrey
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Luft-, vatten- och landskapslära. Depatment of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden.
    Eklöf, Karin
    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Soerensen, Anne L.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Åkerblom, Staffan
    Statistiska centralbyrån (SCB), Statistic Sweden, Stockholm, Sweden.
    Yuan, Shengliu
    Water Quality Center, Trent University, Peterborough, Ontario, Canada.
    Hintelmann, Holger
    Water Quality Center, Trent University, Peterborough, Ontario, Canada.
    Bieroza, Magdalena
    Department of Soil and Environment, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Köhler, Stephan
    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Zdanowicz, Christian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Luft-, vatten- och landskapslära.
    Sources of riverine mercury across the Mackenzie River Basin; inferences from a combined Hg C isotopes and optical properties approach2022Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 806, s. 150808-150808, artikel-id 150808Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The Arctic terrestrial environment harbors a complex mosaic of mercury (Hg) and carbon (C) reservoirs, some of which are rapidly destabilizing in response to climate warming. The sources of riverine Hg across the Mackenzie River basin (MRB) are uncertain, which leads to a poor understanding of potential future release. Measurements of dissolved and particulate mercury (DHg, PHg) and carbon (DOC, POC) concentration were performed, along with analyses of Hg stable isotope ratios (incl. ∆199Hg, d202Hg), radiocarbon content (∆14C) and optical properties of DOC of river water. Isotopic ratios of Hg revealed a closer association to terrestrial Hg reservoirs for the particulate fraction, while the dissolved fraction was more closely associated with atmospheric deposition sources of shorter turnover time. There was a positive correlation between the ∆14C-OC and riverine Hg concentration for both particulate and dissolved fractions, indicating that waters transporting older-OC (14C-depleted) also contained higher levels of Hg. In the dissolved fraction, older DOC was also associated with higher molecular weight, aromaticity and humic content, which are likely associated with higher Hg-binding potential. Riverine PHg concentration increased with turbidity and SO4 concentration. There were large contrasts in Hg concentration and OC age and quality among the mountain and lowland sectors of the MRB, which likely reflect the spatial distribution of various terrestrial Hg and OC reservoirs, including weathering of sulfate minerals, erosion and extraction of coal deposits, thawing permafrost, forest fires, peatlands, and forests. Results revealed major differences in the sources of particulate and dissolved riverine Hg, but nonetheless a common positive association with older riverine OC. These findings reveal that a complex mixture of Hg sources, supplied across the MRB, will contribute to future trends in Hg export to the Arctic Ocean under rapid environmental changes.

  • 3. Dulsat-Masvidal, Maria
    et al.
    Lourenço, Rui
    Lacorte, Silvia
    D'Amico, Marcello
    Albayrak, Tamer
    Andevski, Jovan
    Aradis, Arianna
    Baltag, Emanuel
    Berger-Tal, Oded
    Berny, Philippe
    Choresh, Yael
    Duke, Guy
    Espín, Silvia
    García-Fernández, Antonio J.
    Gómez-Ramírez, Pilar
    Hallgrimsson, Gunnar T.
    Jaspers, Veerle
    Johansson, Ulf S.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Kovacs, Andras
    Krone, Oliver
    Leivits, Madis
    Martínez-López, Emma
    Mateo, Rafael
    Movalli, Paola
    Sánchez-Virosta, Pablo
    Shore, Richard F.
    Valkama, Jari
    Vrezec, Al
    Xirouchakis, Stavros
    Walker, Lee A.
    Wernham, Chris
    A review of constraints and solutions for collecting raptor samples and contextual data for a European Raptor Biomonitoring Facility2021Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 793, s. 148599-148599, artikel-id 148599Artikel i tidskrift (Refereegranskat)
  • 4.
    Ek, Caroline
    et al.
    Stockholms universitet.
    Faxneld, Suzanne
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Nyberg, Elisabeth
    Naturvårdsverket.
    Rolff, Carl
    Stockholms universitet.
    Karlsson, Agnes M.L.
    Stockholms universitet.
    The importance of adjusting contaminant concentrations using environmental data: a retrospective study of 25 years data in Baltic blue mussels2021Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 35, nr 762Artikel i tidskrift (Refereegranskat)
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  • 5. Gałka, Mariusz
    et al.
    Diaconu, Andrei-Cosmin
    Cwanek, Anna
    Hedenäs, Lars
    Naturhistoriska riksmuseet, Enheten för botanik.
    Knorr, Klaus-Holger
    Kołaczek, Piotr
    Łokas, Edyta
    Obremska, Milena
    Swindles, Graeme T.
    Feurdean, Angelica
    Climate-induced hydrological fluctuations shape Arctic Alaskan peatland plant communities2023Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 905, s. 167381-167381, artikel-id 167381Artikel i tidskrift (Refereegranskat)
  • 6. Jörundsdóttir, Hrönn
    et al.
    Jensen, Sören
    Stockholms universitet.
    Hylland, K.
    Holth, T.F.
    Gunnlugsdóttir, H.
    Svavarsson, J
    Ólafsdóttir, A.
    Al-Taliawy, H
    Rigét, F.
    Strand, J.
    Nyberg, Elisabeth
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Bignert, Anders
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Høydal, K.
    Halldórsson, H.P.
    Pristine Arctic: Background mapping of PAHs, PAH metabolites and inorganic traceelements in the North-Atlantic Arctic and sub-Arctic coastal environment2014Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 493, s. 719-728Artikel i tidskrift (Refereegranskat)
  • 7. Myszkowska, Dorota
    et al.
    Bogawski, Paweł
    Piotrowicz, Katarzyna
    Bosiacka, Beata
    Grinn-Gofroń, Agnieszka
    Berger, Uwe E.
    Bonini, Maira
    Ceriotti, Valentina
    Charalampopoulos, Athanasios
    Galán, Carmen
    Gedda, Björn
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Ianovici, Nicoleta
    Kloster, Mathilde
    Oliver, Gilles
    Pashley, Catherine H.
    Pätsi, Sanna
    Pérez-Badia, Rosa
    Puc, Małgorzata
    Rodinkova, Victoria
    Skjøth, Carsten A.
    Thibaudon, Michel
    Vokou, Despoina
    Damialis, Athanasios
    Co-exposure to highly allergenic airborne pollen and fungal spores in Europe2023Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 905, s. 167285-167285, artikel-id 167285Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The study is aimed at determining the potential spatiotemporal risk of the co-occurrence of airborne pollen and fungal spores high concentrations in different bio-climatic zones in Europe. Birch, grass, mugwort, ragweed, olive pollen and Alternaria and Cladosporium fungal spores were investigated at 16 sites in Europe, in 2005–2019. In Central and northern Europe, pollen and fungal spore seasons mainly overlap in June and July, while in South Europe, the highest pollen concentrations occur frequently outside of the spore seasons. In the coldest climate, no allergy thresholds were exceeded simultaneously by two spore or pollen taxa, while in the warmest climate most of the days with at least two pollen taxa exceeding threshold values were observed. The annual air temperature amplitude seems to be the main bioclimatic factor influencing the accumulation of days in which Alternaria and Cladosporium spores simultaneously exceed allergy thresholds. The phenomenon of co-occurrence of airborne allergen concentrations gets increasingly common in Europe and is proposed to be present on other continents, especially in temperate climate.

    Ladda ner fulltext (pdf)
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  • 8.
    Nordlöf, Ulrika
    et al.
    Stockholms universitet.
    Helander, Björn
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Bignert, Anders
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Asplund, Lillemor
    Stockholms universitet.
    Levels of brominated flame retardants and methoxylated polybrominated diphenyl ethers in eggs of white-tailed sea eagles breeding in different regions of Sweden.2010Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 409, s. 238-246Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Forty-four unhatched eggs from white-tailed sea eagle (Haliaeetus albicilla), collected in four regions inSweden in 1992–2005, were analysed for contents of polybrominated diphenyl ethers (PBDEs),polybrominated biphenyl (PBB), hexabromocyclododecane (HBCD) and naturally occurring methoxylatedpolybrominated diphenyl ethers (MeO-PBDEs). Two freshwater areas—Lapland in the arctic zone (LAP) andinland lakes in central and southern Sweden (INL), and two brackish marine areas in the Baltic Sea—thesouth Bothnian Sea (SB) and the Baltic Proper (BP)—were chosen for comparison of the concentrations andcongener distributions in white-tailed sea eagles with different diet and migratory patterns. The geometricmean (GM) concentrations (ng/g lipid weight (l.w.)) of ∑5PBDE (BDE-47, -99, -100, -153, and -154) were720 (LAP), 1500 (INL), 4 100 (SB) and 4 300 (BP), whereas BDE-209 was not detectable in any of the samples.The GM concentrations for HBCD content in LAP, INL, SB and BP were 60, 90, 150 and 140 ng/g l.w.,respectively, whereas the corresponding values for BB-153 were 20, 30, 100 and 120 ng/g l.w. In general, theeggs from all four regions demonstrated similar patterns of PBDE congeners, with concentrations indescending order of BDE-47, -100, -99, -153 and -154. The ∑3-MeO-BDEs (6-MeO-BDE47, 2′-MeO-BDE68,5-Cl-6-MeO-BDE47) for these same regions (as above) were 80, 40, 340 and 240 ng/g l.w., respectively.∑3-MeO-BDEs for LAP and INL (freshwaters) were significantly different, whereas those for SB and BP were not.The presence of MeO-PBDEs in all of the inland samples indicates that there is an as-yet-unidentified sourceof these compounds in the freshwater ecosystem. Between the two more contaminated subpopulationsfrom the Baltic Sea coast, SB showed significantly lower productivity than BP, but no correlation was foundbetween productivity and PBDE, PBB and HBCD at the concentrations found in this study.

  • 9.
    Nordlöf, Ulrika
    et al.
    Stockholms Universitet.
    Helander, Björn
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Zebühr, Yngve
    Stockholms Universitet.
    Bignert, Anders
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Asplund, Lillemor
    Stockholms universitet.
    Polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans and non-ortho-PCBs in eggs of white-tailed sea eagles collected along the Swedish coast in the Baltic Sea2012Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 438, s. 166-173Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Concentrations of polychlorinated dibenzo-p-dioxins (PCDD), polychlorinated dibenzofurans (PCDF), and dioxin-like non-ortho-PCBs were measured in white-tailed sea eagle (WTSE) eagle eggs collected along the Swedish coast of the Baltic Sea during the period 1992–2004. The eggs represent two different subpopulations with significantly different nestling brood sizes; the Baltic Proper (BP) with an approximately normal nestling brood size (1.62), and the south Bothnian Sea (sBS) with reduced nestling brood size (1.22) combined with asigni ficantly higher rate of dead eggs. The aim was to investigate if this difference in reproductive outcome was linked to differences in exposure to dioxin-like compounds. Three eggs collected in Greenland in 200 were included in the study to provide a reference sea eagle population outside of the Baltic Sea region. The concentrations of ΣPCDD, ΣPCDF and Σnon-ortho-PCB in the two subpopulations from the Baltic Sea (BS) region ranged from 0.41–4.1, 1.2–5.3 and 180–970 ng/g lipids, respectively, while in the Greenland population the ranges were 0.11–0.16, 0.22–0.33 and 57–83 ng/g lipid, respectively. 2,3,4,7,8-PCDF was the predominant congener in all areas and accounted for on average 31–49% of the total ΣPCDD/F concentrations. The total toxic equivalents (TEQ) in sBS WTSEs were higher (approximately 39 ng TEQ/g lipid) than reported in eggs for many other birds, and the major contributors to the TEQ in the Baltic Sea were the non-ortho-PCBs. A principal component analysis (PCA) showed a difference in congener pattern between the two Baltic regions that was statistically significant (Hotelling's T2 test). Wefound no significant differencesin the total TEQ between the two populations (sBS–BP) and thus no evidence was found linking the reproductive impairment in WTSE in sBS to the concentrations of PCDD/Fs or non-ortho-PCBs in the eggs.

  • 10. Nordlöf, Ulrika
    et al.
    Helander, Björn
    Zebühr, Yngve
    Bignert, Anders
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Asplund, Lillemor
    Polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans and non-ortho-PCBs in eggs of white-tailed sea eagles collected along the Swedish coast in the Baltic Sea.2012Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 438Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Concentrations of polychlorinated dibenzo-p-dioxins (PCDD), polychlorinated dibenzofurans (PCDF), and dioxin-like non-ortho-PCBs were measured in white-tailed sea eagle (WTSE) eagle eggs collected along the Swedish coast of the Baltic Sea during the period 1992-2004. The eggs represent two different subpopulations with significantly different nestling brood sizes; the Baltic Proper (BP) with an approximately normal nestling brood size (1.62), and the south Bothnian Sea (sBS) with reduced nestling brood size (1.22) combined with a significantly higher rate of dead eggs. The aim was to investigate if this difference in reproductive outcome was linked to differences in exposure to dioxin-like compounds. Three eggs collected in Greenland in 2000 were included in the study to provide a reference sea eagle population outside of the Baltic Sea region. The concentrations of ∑PCDD, ∑PCDF and ∑non-ortho-PCB in the two subpopulations from the Baltic Sea (BS) region ranged from 0.41-4.1, 1.2-5.3 and 180-970 ng/g lipids, respectively, while in the Greenland population the ranges were 0.11-0.16, 0.22-0.33 and 57-83 ng/g lipid, respectively. 2,3,4,7,8-PCDF was the predominant congener in all areas and accounted for on average 31-49% of the total ∑PCDD/F concentrations. The total toxic equivalents (TEQ) in sBS WTSEs were higher (approximately 39 ng TEQ/g lipid) than reported in eggs for many other birds, and the major contributors to the TEQ in the Baltic Sea were the non-ortho-PCBs. A principal component analysis (PCA) showed a difference in congener pattern between the two Baltic regions that was statistically significant (Hotelling's T(2) test). We found no significant differences in the total TEQ between the two populations (sBS-BP) and thus no evidence was found linking the reproductive impairment in WTSE in sBS to the concentrations of PCDD/Fs or non-ortho-PCBs in the eggs.

  • 11. Ortega, Jean C.G.
    et al.
    Geijer, Joja
    Bergsten, Johannes
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Heino, Jani
    Herrmann, Jan
    Johansson, Frank
    Bini, Luis M.
    Spatio-temporal variation in water beetle assemblages across temperate freshwater ecosystems2021Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 792, s. 1-11, artikel-id 148071Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Ecological communities are structured by several mechanisms, including temporal, spatial and environmental factors. However, the simultaneous effects of these factors have rarely been studied. Here, we investigated their role on water beetle assemblages sampled over a period of 18 years. Water beetles were sampled in the spring of each year in lotic and lentic water bodies from mainland region of Kalmar and Öland Island in southeastern Sweden. We assessed how past assemblage structure, environmental factors and spatial variables correlated with current assemblage structure using a variation partitioning approach. We also tested for correlates of temporal beta diversity of water beetle assemblages with multiple regressions. We found that past water beetle assemblage structure explained current water beetle assemblage structure better than the environmental and spatial correlates. We also observed that temporal beta diversity of water beetle assemblages was mainly due to species gain rather than to species loss. Finally, environmental variables (e.g., hydroperiod, habitat size and hydrology) and timespan between sampling events explained part of temporal beta diversity and contribution of species loss to total assemblage dissimilarity variation. Despite the fact that most variation remained unexplained, we found that ecological factors that have been thought to be important for water beetle richness and abundance in past studies (e.g. water body size, water permanence, shore slope, and whether the water body is lentic or lotic) were also correlated to temporal beta diversity. From a conservation point of view, our study suggest that temporal variability of assemblage structure should be included in biological monitoring because of its potential to predict current assemblage structure.

  • 12. Pedersen, Adam F.
    et al.
    Dietz, Rune
    Sonne, Christian
    Letcher, Robert J.
    Roos, Anna M.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Simon, Malene
    Rosing-Asvid, Aqqalu
    Ferguson, Steven H.
    McKinney, Melissa A.
    Feeding and biological differences induce wide variation in legacy persistent organic pollutant concentrations among toothed whales and polar bear in the Arctic2024Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 908, s. 168158-168158, artikel-id 168158Artikel i tidskrift (Refereegranskat)
  • 13. Piccini, Irene
    et al.
    Nervo, Beatrice
    Forshage, Mattias
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Celi, Luisella
    Palestrini, Claudia
    Rolando, Antonio
    Roslin, Tomas
    Dung beetles as drivers of ecosystem multifunctionality: Are response and effect traits interwoven?2017Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, artikel-id S0048-9697(17)32882-6Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Rapid biodiversity loss has emphasized the need to understand how biodiversity affects the provisioning of ecological functions. Of particular interest are species and communities with versatile impacts on multiple parts of the environment, linking processes in the biosphere, lithosphere, and atmosphere to human interests in the anthroposphere (in this case, cattle farming). In this study, we examine the role of a specific group of insects - beetles feeding on cattle dung - on multiple ecological functions spanning these spheres (dung removal, soil nutrient content and greenhouse gas emissions). We ask whether the same traits which make species prone to extinction (i.e. response traits) may also affect their functional efficiency (as effect traits). To establish the link between response and effect traits, we first evaluated whether two traits (body mass and nesting strategy, the latter categorized as tunnelers or dwellers) affected the probability of a species being threatened. We then tested for a relationship between these traits and ecosystem functioning. Across Scandinavian dung beetle species, 75% of tunnelers and 30% of dwellers are classified as threatened. Hence, nesting strategy significantly affects the probability of a species being threatened, and constitutes a response trait. Effect traits varied with the ecological function investigated: density-specific dung removal was influenced by both nesting strategy and body mass, whereas methane emissions varied with body mass and nutrient recycling with nesting strategy. Our findings suggest that among Scandinavian dung beetles, nesting strategy is both a response and an effect trait, with tunnelers being more efficient in providing several ecological functions and also being more sensitive to extinction. Consequently, functionally important tunneler species have suffered disproportionate declines, and species not threatened today may be at risk of becoming so in the near future. This linkage between effect and response traits aggravates the consequences of ongoing biodiversity loss.

  • 14.
    Ritenberga, Olga
    et al.
    University of Latvia Faculty of Geography and Earth Sciences.
    Sofiev, Mikhail
    Finnish Meteorological Institute.
    Siljamo, Pilvi
    Finnish Meteorological Institute.
    Saarto, Annika
    Unit of Aerobiology, University of Turku.
    Dahl, Aslog
    Department of Biological and Environmental Sciences, University of Gothenburg.
    Ekebom, Agneta
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Sauliene, Ingrida
    Research Institute, Siauliai University.
    Shalaboda, Valentina
    Institute for Experimental Botany of the NAS of Belarus.
    Severova, Elena
    Moscow State University.
    Hoebeke, Lucie
    Belgian Aerobiological Network, Mycology and Aerobiology service, Scientific Institute of Public Health.
    Ramfjord, Hallvard
    Department of Biology, Norwegian University of Science and Technology.
    A statistical model for predicting the inter-annual variability of birchpollen abundance in Northern and North-Eastern Europe2018Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 615, s. 228-239Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The paper suggests amethodology for predicting next-year seasonal pollen index (SPI, a sumof daily-mean pollen concentrations)over large regions and demonstrates its performance for birch in Northern andNorth-Eastern Europe. Astatistical model is constructed using meteorological, geophysical and biological characteristics of the previous year).A cluster analysis of multi-annual data of European Aeroallergen Network (EAN) revealed several large regions inEurope, where the observed SPI exhibits similar patterns of the multi-annual variability.We built the model for thenorthern cluster of stations, which covers Finland, Sweden, Baltic States, part of Belarus, and, probably, Russia andNorway,where the lack of data did not allow for conclusive analysis. The constructed modelwas capable of predictingthe SPI with correlation coefficient reaching up to 0.9 for somestations, odds ratio is infinitely high for 50% of sites insidethe region and the fraction of prediction fallingwithin factor of 2 from observations, stays within 40–70%. In particular,model successfully reproduced both the bi-annual cycle of the SPI and years when this cycle breaks down.

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  • 15.
    Schartup, Amina T.
    et al.
    Scripps Institution of Oceanography.
    Soerensen, Anne L.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Angot, Hélène
    Extreme Environments Research Laboratory, École Polytechnique Fédérale de Lausanne (EPFL).
    Bowman, Katlin
    University of California Santa Cruz.
    Selin, Noelle
    Massachusetts Institute of Technology.
    What are the likely changes in mercury concentration in the Arctic atmosphere and ocean under future emissions scenarios?2022Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 836, artikel-id 155477Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Arctic mercury (Hg) concentrations respond to changes in anthropogenic Hg emissions and environmental change. This manuscript, prepared for the 2021 Arctic Monitoring and Assessment Programme Mercury Assessment, explores the response of Arctic Ocean Hg concentrations to changing primary Hg emissions and to changing sea-ice cover, river inputs, and net primary production. To do this, we conduct a model analysis using a 2015 Hg inventory and future anthropogenic Hg emission scenarios. We model future atmospheric Hg deposition to the surface ocean as a flux to the surface water or sea ice using three scenarios: No Action, New Policy (NP), and Maximum Feasible Reduction (MFR). We then force a five-compartment box model of Hg cycling in the Arctic Ocean with these scenarios and literature-derived climate variables to simulate environmental change. No Action results in a 51% higher Hg deposition rate by 2050 while increasing Hg concentrations in the surface water by 22% and <9% at depth. Both “action” scenarios (NP and MFR), implemented in 2020 or 2035, result in lower Hg deposition ranging from 7% (NP delayed to 2035) to 30% (MFR implemented in 2020) by 2050. Under this last scenario, ocean Hg concentrations decline by 14% in the surface and 4% at depth. We find that the sea-ice cover decline exerts the strongest Hg reducing forcing on the Arctic Ocean while increasing river discharge increases Hg concentrations. When modified together the climate scenarios result in a ≤5% Hg decline by 2050 in the Arctic Ocean. Thus, we show that the magnitude of emissions-induced future changes in the Arctic Ocean is likely to be substantial compared to climate-induced effects. Furthermore, this study underscores the need for prompt and ambitious action for changing Hg concentrations in the Arctic, since delaying less ambitious reduction measures–like NP–until 2035 may become offset by Hg accumulated from pre-2035 emissions.

  • 16.
    Soerensen, Anne L.
    et al.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Faxneld, Suzanne
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Pettersson, Maria
    Environment and Health Administration, City of Stockholm, Sweden.
    Sköld, Martin
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Fish tissue conversion factors for mercury, cadmium, lead and nine per- and polyfluoroalkyl substances for use within contaminant monitoring2023Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 858, s. 159740-159740, artikel-id 159740Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Fish tissue levels have to comply with environmental quality standards (EQSs) within the European Water Framework Directive. However, within monitoring, contaminants are sometimes measured in a different tissue than the tissue for which the environmental (whole fish) or human (fillet (equivalent to muscle tissue)) quality standard is set. Tissue conversion factors (k), describing the relationship between concentrations in different tissues, can be used to obtain a quality standard for the appropriate tissue. Several different approaches have been suggested for the calculation of k. For monitoring purposes, we propose the use of a simple, easy reproducible approach that assumes proportionality between two tissue, or tissue and whole fish, concentrations. This allows for an easy comparison of studies and adoption of ks into independent monitoring programs. Here, we determined ks for three metals (mercury (Hg), lead (Pb), cadmium (Cd)) and nine per- and polyfluoroalkyl substances (PFAS) including perfluorooctanesulfonic acid (PFOS) across six marine and freshwater fish species from Northern European lakes and the Baltic Sea. We found significant species differences for Hg for kmuscle/whole fish, for Cd and Pb for kliver/whole fish and for Cd for kliver/muscle. For perfluoroalkyl carboxylic acids (PFCA), we found a chain length dependence with lowest kliver/muscle at low and high chain lengths (C8, C13) and highest for median chain lengths (C9-C12). Further, there were differences between fish species with kliver/muscle for PFOS almost doubling from eelpout (10.3) to herring (19.2) and increasing up to a factor 4 between eelpout and herring for other PFASs. FOSA had two distinctive groups, herring with a kliver/muscle of 48.7 and a second group with ks of 2.3 to 5.9 for all other fish species. Our results suggest that differences in the tissue somatic index, and contaminant uptake, tissue transfer and metabolism result in the need for species-specific ks within monitoring

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  • 17.
    Sun, Jiachen
    et al.
    Univ of Antwerp.
    Bustnes, Jan
    Norwegian Institute for Nature Research (NINA).
    Helander, Björn
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Eulars, Igor
    Aarhus University, Roskilde, Denmark.
    Temporal trends of mercury differ across three northern white-tailedeagle (Haliaeetus albicilla) subpopulations2019Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 687, s. 77-86Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The spatiotemporal trends of mercury (Hg) are crucial for the understanding of this ubiquitous and toxic contaminant. However, uncertainties often arise from comparison among studies using different species, analytical and statisticalmethods. The long-termtemporal trends of Hg exposurewere reconstructed for a key sentinel species, the white-tailed eagle (Haliaeetus albicilla). Body feathers were sampled from museum collections covering 150 years in time (from 1866 to 2015) from West Greenland (n = 124), Norway (n = 102), and Sweden (n= 87). A significant non-linear trend was observed in the Norwegian subpopulation, with a 60% increase in exposure occurring from1866 to 1957 followed by a 40% decline until 2015. In the Swedish subpopulation, studied at a later period, the Hg exposure showed a drastic decline of 70% from 1967 to 2011. In contrast, no significant trend could be observed in the Greenland subpopulation. The additional analysis of dietary proxies (δ13C and δ15N) in general increased performance of the temporal trend models, but this was dependent on the subpopulation and study period. The downward trend of Hg coincided with the decreasing δ13C and δ15N in the Norwegian subpopulation, suggesting a potential dietary mitigation of Hg contamination. Hg exposure in both the Greenland andNorwegian subpopulationswas consistently belowthe suggested threshold for adverse health effects (40.0 μg g−1),while the maximumexposure in the Swedish subpopulationwas distinctively elevated (median: 46.0 μg g−1) and still remains well above natural background concentrations (maximum 5.0 μg g−1).

  • 18. Zhou, Yihui
    et al.
    Asplund, Lillemor
    Yin, Ge
    Athanassiadis, Ioannis
    Wideqvist, Ulla
    Bignert, Anders
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Qiu, Yanling
    Zhu, Zhiliang
    Zhao, Jianfu
    Bergman, Åke
    Extensive organohalogen contamination in wildlife from a site in the Yangtze River Delta.2016Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 554-555Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The environmental and human health concerns for organohalogen contaminants (OHCs) extend beyond the 23 persistent organic pollutants (POPs) regulated by the Stockholm Convention. The current, intense industrial production and use of chemicals in China and their bioaccumulation makes Chinese wildlife highly suitable for the assessment of legacy, novel and emerging environmental pollutants. In the present study, six species of amphibians, fish and birds were sampled from paddy fields in the Yangtze River Delta (YRD) were screened for OHCs. Some extensive contamination was found, both regarding number and concentrations of the analytes, among the species assessed. High concentrations of chlorinated paraffins were found in the snake, Short-tailed mamushi (range of 200-340 μg g(-)(1)lw), Peregrine falcon (8-59 μg g(-1)lw) and Asiatic toad (97 μg g(-)(1)lw). Novel contaminants and patterns were observed; octaCBs to decaCB made up 20% of the total polychlorinated biphenyls (PCBs) content in the samples and new OHCs, substituted with 5-8 chlorines, were found but are not yet structurally confirmed. In addition, Dechlorane 602 (DDC-DBF) and numerous other OHCs (DDTs, hexachlorocyclohexanes (HCHs), polybrominated diphenyl ethers (PBDEs), hexbromocyclododecane (HBCDD), chlordane, heptachlor, endosulfan and Mirex) were found in all species analyzed. These data show extensive chemical contamination of wildlife in the YRD with a suite of OHCs with both known and unknown toxicities, calling for further in-depth studies.

  • 19.
    Åkerblom, Staffan
    et al.
    Statistiska centralbyrån (SCB).
    Zdanowicz, Christian
    Uppsala University.
    Campeau, Audrey
    Uppsala University.
    Soerensen, Anne L.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Hewitt, Jack
    Uppsala University.
    Spatial and temporal variations in riverine mercury in the Mackenzie River Basin, Canada, from community-based water quality monitoring data.2022Ingår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 853, artikel-id 158674Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Arctic rivers deliver~40 t yr−1 of mercury (Hg) to the Arctic Ocean, ~6%of which is from the Mackenzie River Basin(MRB), a region warming at ~3 times the mean hemispheric rate. How this will affect Hg transfer to ecosystems of theBeaufort Sea is a worrying issue. To help address this question, we analyzed >500 measurements ofHg and other waterproperties from 22 rivers collected in 2012–2018 by communities of the MRB. This new dataset provides a more comprehensiveview of riverine Hg variations across the basin than was previously available. We find that rivers issuedfrom mountains in the western MRB contribute the largest share of Hg in the Mackenzie River, 60–95 % of it beingcarried as fine suspended solids and probably sourced from riverbank erosion and thaw slumps. In contrast, lowlandrivers of the central and eastern MRB contribute larger shares of dissolved Hg (up to 78 %), likely from recent atmosphericdeposition through precipitation. Using load modelling constrained by the new water quality dataset, we estimatethat the three largest western tributaries (Liard, Peel and Arctic Red rivers) of the Mackenzie contribute 60 % ofthe annual MRB THg export and DHg export to the Beaufort Sea during freshet, as well as 51 % of DHg export, whilesupplying 60% of freshet discharge. Load modelling also reveals a sustained decline in DHg loads of ~13 kg yr−1 between2001 and 2016 in the lower Mackenzie River, which likely reflect a decreasing trend in atmospheric Hg depositionover most of northwestern Canada during this period. This study highlights the value of community-based waterquality monitoring in helping to support assessments of riverine Hg in theMRB in support of the Minamata Conventionon Mercury.

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