Seasonal trends of per- and polyfluoroalkyl substances in river water affected by fire training sites and wastewater treatment plants

Fire-fighting training areas and wastewater treatment plants (WWTPs) are potential sources of per- and polyfluoroalkyl substances (PFASs) to the nearby aquatic environment. This study investigated seasonal variations of PFAS levels in two river catchments in Sweden; one impacted by Stockholm Arlanda Airport (Sites 1 and 2), and the other by WWTPs and a military airport (Uppsala) (Sites 3 and 4). Sigma PFAS concentrations were up to 61 (Sites 1 and 2) and 4 (Sites 3 and 4) times higher compared to the reference site. Distinct different seasonal trends were observed in the two catchments with higher Sigma PFAS concentrations during the high water flow season at Site 1 compared to the low water flow season, whereas Sites 3 and 4 showed an inverse seasonal trend. This demonstrates that the pollution is mobilized during periods of high flow in the first catchment (Stockholm Arlanda Airport), while it is diluted during high flow in the second catchment (Uppsala). Average annual loads for Sigma PFASs were estimated at similar to 5.2 and similar to 3.7 kg yr(-1) for the catchment in Uppsala and Stockholm Arlanda Airport, respectively. Thus, both catchments add PFASs to Lake Malaren, which is Sweden's most important source area for drinking water production

Knowledge co-production in the Helge å catchment: a comparative analysis

Addressing sustainability challenges in landscape management requires processes for co-producing usable knowledge together with those who will use that knowledge. Participatory futures methods are powerful tools for attaining such knowledge. The applications of such methods are diverse and understanding the intricacies of the knowledge co-production process is important to further develop these research practices. To improve participatory futures methods and contribute to systematic and critical reflections on methodology, we present a comparative analysis of four research projects that applied participatory futures methods in the same study area. Conducted between 2011 and 2020, these projects aimed to co-produce knowledge about the future provision of ecosystem services in the Helge å catchment area in southern Sweden. For structuring the post-hoc, self-reflexive analysis, we developed a framework dividing the knowledge co-production process into three dimensions: settings, synthesis and diffusion. We based the analysis on documentation from the projects, a two-step questionnaire to each research team, a workshop with co-authors and interviews with key participants. The comparison highlights steps in project decision-making, explicit and implicit assumptions in our respective approaches and how these assumptions informed process design in the projects. Our detailed description of the four knowledge co-production processes points to the importance of flexibility in research design, but also the necessity for researchers and other participants to adapt as the process unfolds

Anthrax outbreak in a Swedish beef cattle herd - 1st case in 27 years: Case report

After 27 years with no detected cases, an outbreak of anthrax occurred in a beef cattle herd in the south of Sweden. The outbreak was unusual as it occurred in winter, in animals not exposed to meat-and-bone meal, in a non-endemic country

Bis(4-chlorophenyl) sulfone and PCB methyl sulfone metabolites : Trends and chirality in the Baltic Sea environment

The Baltic Sea was earlier identified as a highly polluted brackish water body and still is. The high concentrations of polychlorinated biphenyls (PCBs), p,p’-DDT and related compounds led to severe effects on several species in the Baltic region. However, the situation has improved significantly since the 1970’s resulting in lower exposures to a range of pollutants and healthier wildlife populations. Independent of this positive trend there are still new chemicals leaking into the Baltic Sea environment. The objective of this thesis is to improve the knowledge of sulfone containing compounds and pollutant metabolites in wildlife, with special interest in bis(4-chlorophenyl) sulfone (BCPS) distribution, temporal trend and exposure levels, and the methylsulfonyl-PCBs (MeSO2-PCBs). The latter are of particular interest for chiral MeSO2-PCBs. BCPS is used for the production of high temperature polymers and was detected as an environmental contaminant ten years ago. PCBs, p,p’-DDT and related compounds are still of scientific interest. BCPS is biomagnified and especially in the bird guillemot which has levels of up to 2000 ng BCPS/g fat compared to the grey seal with concentrations of about 60 ng/g fat. The seal levels are similar to the herring, the prey of the bird and seal, with concentrations of 30 ng BCPS/g fat. The guillemot concentration of BCPS has been similar over the last 30 years with a minimal, but significant, annual decline of 1.6%. The reason for the slow decline is not yet understood. Also MeSO2-PCBs and 3-MeSO2-DDE show a small decrease over time in guillemot egg (3 and 9%, respectively), which is less then for the parent compounds. This shows that the sulfone metabolites are more persistent than their precursors in the guillemot. Furthermore, all these sulfone containing compounds showed a specific retention to liver comparing different tissues in grey seal. The atropisomers of the chiral MeSO2-PCB were analysed in both the guillemot and the grey seal and showed to occur in a skewed relationship. This is particularly pronounced in seals where one atropisomer of each chiral congener is very dominating. The dominating atropisomers have been identified with an absolute R configuration, in both grey seal and guillemot. An enantioselective metabolism was indicated to occur when experimentally tested by CB-132 in rat. This thesis is stressing the high specificity in wildlife for one atropisomer in the pair of chiral PCB methyl sulfones being PCB metabolites, and the high BCPS concentrations in guillemot hatching in the Baltic proper

Djur som intervention. Ur ett professionellt perspektiv

Den här uppsatsen vill exemplifiera och beskriva hur interaktionen mellan människor och djur kan användas i socialt arbete. Genom kvalitativa intervjuer med professionella som använder djur i vardagen. Allt från vårdhundar hos dementa på äldreboende till ridhästar för att hjälpa unga med självdestruktivt beteende, har vi funnit gemensamma effekter som djuret bidrar med i inter-aktionen. Genom att applicera teorier som social pedagogik, makt och symbolisk interaktionism försöker vi tydliggöra interaktionen och vad som sker utifrån olika teoretiska perspektiv. Ur resultatet kommer vi presentera djurets olika funktioner och roller som icebreaker, motivations verktyg, skapare av sammanhang och signifikant andre. Arbetet belyser även för och nackdelar samt etiska aspekter kring användandet av djur

Miljögifter hos räv, mård och rovfåglar : En analys av rodenticider, PFAS, PCB, kvicksilver och kadmium

På uppdrag av Länsstyrelsen i Västernorrland har IVL Svenska Miljöinstitutet under 2014/2015 analyserat rodenticider, per- och polyfluorerade alkylsubstanser (PFAS), polyklorerade bifenyler (PCB) samt kvicksilver (Hg) och kadmium (Cd) i levrar från mård, räv och olika rovfåglar från Västernorrlands län. Resultaten ifrån denna studie gällande rodenticider jämförs främst med den screeningstudie som IVL utförde 2012 för Naturvårdsverket (Norström et al 2013). Jämförelse av data för övriga efterfrågade ämnen är i den mån det var möjligt hämtade från Naturvårdsverkets databas Miljögifter i biologiskt material (www.ivl.se)

Miljögifter hos räv, mård och rovfåglar : En analys av rodenticider, PFAS, PCB, kvicksilver och kadmium

På uppdrag av Länsstyrelsen i Västernorrland har IVL Svenska Miljöinstitutet under 2014/2015 analyserat rodenticider, per- och polyfluorerade alkylsubstanser (PFAS), polyklorerade bifenyler (PCB) samt kvicksilver (Hg) och kadmium (Cd) i levrar från mård, räv och olika rovfåglar från Västernorrlands län. Resultaten ifrån denna studie gällande rodenticider jämförs främst med den screeningstudie som IVL utförde 2012 för Naturvårdsverket (Norström et al 2013). Jämförelse av data för övriga efterfrågade ämnen är i den mån det var möjligt hämtade från Naturvårdsverkets databas Miljögifter i biologiskt material (www.ivl.se)