37 results on '"Thierfelder, T."'
Search Results
2. Measurements and modeling of pesticide persistence in soil at the catchment scale
- Author
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Ghafoor, A., Jarvis, N.J., Thierfelder, T., and Stenström, J.
- Published
- 2011
- Full Text
- View/download PDF
3. Associating land cover changes with patterns of incidences of climate-sensitive infections: an example on tick-borne diseases in the Nordic area
- Author
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Leibovici, D.G., Bylund, H., Björkman, C., Tokarevich, N., Thierfelder, T., Evengård, B., and Quegan, S.
- Subjects
Land cover ,Climate Research ,tick-borne disease ,Vegetation type ,vector-borne disease ,Article ,Microbiology in the medical area ,land cover ,vegetation type ,Vector-borne disease ,Mikrobiologi inom det medicinska området ,Animals ,Humans ,Climate change ,Lyme Disease ,Ixodes ,Incidence ,Fennoscandia ,Public Health, Global Health, Social Medicine and Epidemiology ,Tick-borne disease ,Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi ,climate change ,Tick-Borne Diseases ,Nordic ,Medicine ,Climate-sensitive infection ,climate-sensitive infection ,Encephalitis, Tick-Borne - Abstract
Some of the climate-sensitive infections (CSIs) affecting humans are zoonotic vector-borne diseases, such as Lyme borreliosis (BOR) and tick-borne encephalitis (TBE), mostly linked to various species of ticks as vectors. Due to climate change, the geographical distribution of tick species, their hosts, and the prevalence of pathogens are likely to change. A recent increase in human incidences of these CSIs in the Nordic regions might indicate an expansion of the range of ticks and hosts, with vegetation changes acting as potential predictors linked to habitat suitability. In this paper, we study districts in Fennoscandia and Russia where incidences of BOR and TBE have steadily increased over the 1995–2015 period (defined as ’Well Increasing districts’). This selection is taken as a proxy for increasing the prevalence of tick-borne pathogens due to increased habitat suitability for ticks and hosts, thus simplifying the multiple factors that explain incidence variations. This approach allows vegetation types and strengths of correlation specific to the WI districts to be differentiated and compared with associations found over all districts. Land cover types and their changes found to be associated with increasing human disease incidence are described, indicating zones with potential future higher risk of these diseases. Combining vegetation cover and climate variables in regression models shows the interplay of biotic and abiotic factors linked to CSI incidences and identifies some differences between BOR and TBE. Regression model projections up until 2070 under different climate scenarios depict possible CSI progressions within the studied area and are consistent with the observed changes over the past 20 years.
- Published
- 2021
4. Healthy ecosystems for human and animal health: Science diplomacy for responsible development in the Arctic
- Author
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Evengård, B., Destouni, G., Kalantari, Z., Albihn, A., Björkman, C., Bylund, H., Jenkins, E., Koch, A., Kukarenko, N., Leibovici, D., Lemmityinen, J., Menshakova, M., Mulvad, G., Nilsson, L.M., Omazic, A., Pshenichnaya, N., Quegan, S., Rautio, A., Revich, B., Rydén, P., Sjöstedt, A., Tokarevich, N., Thierfelder, T., and Orlov, D.
- Subjects
Climate Research ,Klimatforskning - Abstract
Climate warming is occurring most rapidly in the Arctic, which is both a sentinel and a driver of further global change. Ecosystems and human societies are already affected by warming. Permafrost thaws and species are on the move, bringing pathogens and vectors to virgin areas. During a five-year project, the CLINF - a Nordic Center of Excellence, funded by the Nordic Council of Ministers, has worked with the One Health concept, integrating environmental data with human and animal disease data in predictive models and creating maps of dynamic processes affecting the spread of infectious diseases. It is shown that tularemia outbreaks can be predicted even at a regional level with a manageable level of uncertainty. To decrease uncertainty, rapid development of new and harmonised technologies and databases is needed from currently highly heterogeneous data sources. A major source of uncertainty for the future of contaminants and infectious diseases in the Arctic, however, is associated with which paths the majority of the globe chooses to follow in the future. Diplomacy is one of the most powerful tools Arctic nations have to influence these choices of other nations, supported by Arctic science and One Health approaches that recognise the interconnection between people, animals, plants and their shared environment at the local, regional, national and global levels as essential for achieving a sustainable development for both the Arctic and the globe.
- Published
- 2021
5. Healthy ecosystems for human and animal health : Science diplomacy for responsible development in the Arctic
- Author
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Evengård, Birgitta, Destouni, G., Kalantari, Z., Albihn, A., Björkman, C., Bylund, H., Jenkins, E., Koch, A., Kukarenko, N., Leibovici, D., Lemmityinen, J., Menshakova, M., Mulvad, G., Nilsson, Lena Maria, Omazic, A., Pshenichnaya, N., Quegan, S., Rautio, A., Revich, B., Rydén, Patrik, Sjöstedt, Anders, Tokarevich, N., Thierfelder, T., Orlov, D., Evengård, Birgitta, Destouni, G., Kalantari, Z., Albihn, A., Björkman, C., Bylund, H., Jenkins, E., Koch, A., Kukarenko, N., Leibovici, D., Lemmityinen, J., Menshakova, M., Mulvad, G., Nilsson, Lena Maria, Omazic, A., Pshenichnaya, N., Quegan, S., Rautio, A., Revich, B., Rydén, Patrik, Sjöstedt, Anders, Tokarevich, N., Thierfelder, T., and Orlov, D.
- Abstract
Climate warming is occurring most rapidly in the Arctic, which is both a sentinel and a driver of further global change. Ecosystems and human societies are already affected by warming. Permafrost thaws and species are on the move, bringing pathogens and vectors to virgin areas. During a five-year project, the CLINF - a Nordic Center of Excellence, funded by the Nordic Council of Ministers, has worked with the One Health concept, integrating environmental data with human and animal disease data in predictive models and creating maps of dynamic processes affecting the spread of infectious diseases. It is shown that tularemia outbreaks can be predicted even at a regional level with a manageable level of uncertainty. To decrease uncertainty, rapid development of new and harmonised technologies and databases is needed from currently highly heterogeneous data sources. A major source of uncertainty for the future of contaminants and infectious diseases in the Arctic, however, is associated with which paths the majority of the globe chooses to follow in the future. Diplomacy is one of the most powerful tools Arctic nations have to influence these choices of other nations, supported by Arctic science and One Health approaches that recognise the interconnection between people, animals, plants and their shared environment at the local, regional, national and global levels as essential for achieving a sustainable development for both the Arctic and the globe.
- Published
- 2021
- Full Text
- View/download PDF
6. Healthy ecosystems for human and animal health:science diplomacy for responsible development in the Arctic
- Author
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Evengård, B. (B.), Destouni, G. (G.), Kalantari, Z. (Z.), Albihn, A. (A.), Björkman, C. (C.), Bylund, H. (H.), Jenkins, E. (E.), Koch, A. (A.), Kukarenko, N. (N.), Leibovici, D. (D.), Lemmityinen, J. (J.), Menshakova, M. (M.), Mulvad, G. (G.), Nilsson, L. M. (L. M.), Omazic, A. (A.), Pshenichnaya, N. (N.), Quegan, S. (S.), Rautio, A. (A.), Revich, B. (B.), Rydén, P. (P.), Sjöstedt, A. (A.), Tokarevich, N. (N.), Thierfelder, T. (T.), Orlov, D. (D.), Evengård, B. (B.), Destouni, G. (G.), Kalantari, Z. (Z.), Albihn, A. (A.), Björkman, C. (C.), Bylund, H. (H.), Jenkins, E. (E.), Koch, A. (A.), Kukarenko, N. (N.), Leibovici, D. (D.), Lemmityinen, J. (J.), Menshakova, M. (M.), Mulvad, G. (G.), Nilsson, L. M. (L. M.), Omazic, A. (A.), Pshenichnaya, N. (N.), Quegan, S. (S.), Rautio, A. (A.), Revich, B. (B.), Rydén, P. (P.), Sjöstedt, A. (A.), Tokarevich, N. (N.), Thierfelder, T. (T.), and Orlov, D. (D.)
- Abstract
Climate warming is occurring most rapidly in the Arctic, which is both a sentinel and a driver of further global change. Ecosystems and human societies are already affected by warming. Permafrost thaws and species are on the move, bringing pathogens and vectors to virgin areas. During a five-year project, the CLINF — a Nordic Center of Excellence, funded by the Nordic Council of Ministers, has worked with the One Health concept, integrating environmental data with human and animal disease data in predictive models and creating maps of dynamic processes affecting the spread of infectious diseases. It is shown that tularemia outbreaks can be predicted even at a regional level with a manageable level of uncertainty. To decrease uncertainty, rapid development of new and harmonised technologies and databases is needed from currently highly heterogeneous data sources. A major source of uncertainty for the future of contaminants and infectious diseases in the Arctic, however, is associated with which paths the majority of the globe chooses to follow in the future. Diplomacy is one of the most powerful tools Arctic nations have to influence these choices of other nations, supported by Arctic science and One Health approaches that recognise the interconnection between people, animals, plants and their shared environment at the local, regional, national and global levels as essential for achieving a sustainable development for both the Arctic and the globe.
- Published
- 2021
7. Reaction of foster cows to prevention of suckling from and separation from four calves simultaneously or in two steps
- Author
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Loberg, J.M., Hernandez, C.E., Thierfelder, T., Jensen, M.B., Berg, C., and Lidfors, L.
- Subjects
Cows -- Physiological aspects ,Cows -- Behavior ,Calves -- Physiological aspects ,Calves -- Behavior ,Infants -- Weaning ,Infants -- Analysis ,Zoology and wildlife conservation - Abstract
The aim of this study was to investigate if a 2-step method of preventing suckling and cow-calf separation reduces the stress reaction in foster cows compared with a simultaneous separation method. Seven Swedish Holstein and 5 Swedish Red dairy cows were used as foster cows, each having a group of 4 calves. The foster cow-calf group was formed when calves were 1 wk old, and the calves were prevented from suckling at 10 wk of age. In 6 of the cow-calf groups, calves were prevented from suckling by simultaneous separation from the cow (control). In the other 6 groups, calves were fitted with a nose-flap, which prevented them from suckling while they were kept together with the cow for another 2 wk before they were separated (2-step). The behavior of the foster cows was observed at 4 observation periods, 0 to 2, 8.5 to 9.5, 24 to 26, and 72 to 74 h after the calves were prevented from suckling (2-step), after separation (2-step), and after calves were prevented from suckling by simultaneous separation (control). For both treatments, saliva cortisol was sampled once daily for 5 d at wk 10. This was repeated at wk 12 for the 2-step treatment. Heart rate was measured with the behavioral observations. Control foster cows vocalized more (P < 0.001) and walked more (P = 0.005) than the 2-step foster cows after prevention of suckling and after separation from the calves. When control cows were separated from their calves, they more frequently (P < 0.001) held their head out of the pen than was the case with 2-step cows when separated 2 wk after prevention of suckling. The variation in heart rate was larger in the control group compared with 2-step cows at 0 to 2 h after separation/ prevention of suckling (P = 0.002). No effect of treatment was found on cortisol concentration. Our conclusion is that separating the 2 events 'prevention of suckling' and 'separation' reduces the stress experienced by the foster cow at weaning. Key words: behavior, cortisol, foster cow, heart rate, stress, weaning
- Published
- 2007
8. Empirical/statistical modeling of water quality in dimictic glacial/boreal lakes
- Author
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Thierfelder, T.
- Published
- 1999
- Full Text
- View/download PDF
9. Reaction of foster cows to prevention of suckling from and separation from four calves simultaneously or in two steps
- Author
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Loberg, J M, Hernandez, C E, Thierfelder, T, Jensen, Margit Bak, Berg, C, and Lidfors, L
- Published
- 2007
- Full Text
- View/download PDF
10. Evaluation of temperature sum models and timing of Quassia amara (Simaroubaceae) wood-chip extract to control apple sawfly (Hoplocampa testudinea Klug) in Sweden
- Author
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Sjöberg, P., primary, Swiergiel, W., additional, Neupane, D., additional, Lennartsson, E., additional, Thierfelder, T., additional, Tasin, M., additional, and Rämert, B., additional
- Published
- 2014
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- View/download PDF
11. Ecosystem change and stability over multiple decades in the Swedish subarctic:complex processes and multiple drivers
- Author
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Callaghan, T. V., Jonasson, Charlotte, Thierfelder, T., Yang, Z., Hedenas, H., Johansson, Margareta, Molau, U., Bogaert, R. Van, Michelsen, A., Olofsson, J., Bokhorst, S., Phoenix, G., Bjerke, J. W., Tommervik, H., Christensen, T. R., Hanna, E., Koller, E. K., Sloan, V. L., Callaghan, T. V., Jonasson, Charlotte, Thierfelder, T., Yang, Z., Hedenas, H., Johansson, Margareta, Molau, U., Bogaert, R. Van, Michelsen, A., Olofsson, J., Bokhorst, S., Phoenix, G., Bjerke, J. W., Tommervik, H., Christensen, T. R., Hanna, E., Koller, E. K., and Sloan, V. L.
- Published
- 2013
12. Degradation and Leaching of Fluroxypyr after Application to Railway Tracks
- Author
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Cederlund, H., primary, Börjesson, E., additional, Jonsson, E., additional, and Thierfelder, T., additional
- Published
- 2012
- Full Text
- View/download PDF
13. The role of catchment hydrology in the characterization of water quality in glacial/boreal lakes
- Author
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Thierfelder, T and Thierfelder, T
- Abstract
In an empirical/statistical approach, the relationship between watershed characteristics and the inter-lake variance of chemical lake water composition is analyzed. The lake water quality data sampled in 87 extensively monitored glacial/boreal lakes is he, Addresses: Thierfelder T, Uppsala Univ, Dept Earth Sci, Villav 16, S-75236 Uppsala, Sweden. Uppsala Univ, Dept Earth Sci, S-75236 Uppsala, Sweden.
- Published
- 1999
14. Empirica/statisttcal modeling of water quality in dimictic glacial/boreal lakes
- Author
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Thierfelder, T and Thierfelder, T
- Abstract
In an empirical/statistical approach to the interaction between watershed characteristics and lake water quality, the inter-lake variance of 87 chemically monitored dimictic glacial/boreal lakes is correlated to the distributed properties of catchment des, Addresses: Thierfelder T, Uppsala Univ, Dept Earth Sci, Villav 16, S-75236 Uppsala, Sweden. Uppsala Univ, Dept Earth Sci, S-75236 Uppsala, Sweden.
- Published
- 1999
15. Standard probability density functions of characterizing water quality variables in dimictic glacial boreal lakes
- Author
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Thierfelder, T and Thierfelder, T
- Abstract
With the secure supply of healthy fresh water being a threatened essentiality for the global society, compatibility among scientists working with water quality issues must be considered as highly prioritized. To achieve this, a standard that facilitates c, Addresses: Thierfelder T, Uppsala Univ, Dept Earth Sci, Villav 16, S-75236 Uppsala, Sweden. Uppsala Univ, Dept Earth Sci, S-75236 Uppsala, Sweden.
- Published
- 1999
16. The morphology of landscape elements as predictors of water quality in glacial/boreal lakes
- Author
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Thierfelder, T and Thierfelder, T
- Abstract
In a statistical approach to the study of watershed-lake water quality interaction, information about geology, land cover and soils was digitized in the drainage area of 87 chemically monitored lakes. With standard 1:50000 scale maps as the source of info, Addresses: Thierfelder T, Uppsala Univ, Dept Earth Sci, Villav 16, S-75236 Uppsala, Sweden. Uppsala Univ, Dept Earth Sci, S-75236 Uppsala, Sweden.
- Published
- 1998
17. Cadmium levels in kidneys from Swedish pigs in relation to environmental factors - temporal and spatial trends
- Author
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Grawe, KP, Thierfelder, T, Jorhem, L, Oskarsson, A, Grawe, KP, Thierfelder, T, Jorhem, L, and Oskarsson, A
- Abstract
The kidney cadmium level in pigs slaughtered at the age of 5-7 months was analysed with respect to geographical and temporal trends. During the period 1984-1992, a total of 1051 samples of porcine kidney from 31 abattoirs were analysed for cadmium at the, Addresses: Grawe KP, Natl Food Adm, POB 622, S-75126 Uppsala, Sweden. Natl Food Adm, S-75126 Uppsala, Sweden. Uppsala Univ, Inst Earth Sci, S-75236 Uppsala, Sweden. Swedish Univ Agr Sci, Dept Food Hyg, S-75007 Uppsala, Sweden.
- Published
- 1997
18. Cadmium levels in kidneys from Swedish pigs in relation to environmental factors — temporal and spatial trends
- Author
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Grawé, K.Petersson, primary, Thierfelder, T., additional, Jorhem, L., additional, and Oskarsson, A., additional
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- 1997
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19. Impact of stroke on anterior-posterior force generation prior to seat-off during sit-to-walk.
- Author
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Frykberg GE, Thierfelder T, Aberg AC, Halvorsen K, Borg J, and Hirschfeld H
- Published
- 2012
20. Prognostic factors in whiplash-associated disorders.
- Author
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Kyhlbäck M, Thierfelder T, and Söderlund A
- Published
- 2002
21. Evaluation of temperature sum models and timing of Quassia amara (Simaroubaceae) wood-chip extract to control apple sawfly (Hoplocampa testudinea Klug) in Sweden
- Author
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Sjöberg, P., Swiergiel, W., Neupane, D., Lennartsson, E., Thierfelder, T., Tasin, M., and Rämert, B.
- Subjects
Original Paper ,Organic ,Monitoring ,IPM ,Agronomy and Crop Science ,Forecasting - Abstract
Apple sawfly (Hoplocampa testudinea Klug) is a serious pest in European organic apple production. They hatch during a short period only, making correct timing of control measures crucial. Swedish organic growers have requested a strategy for optimal timing of the Quassia amara (Simaroubaceae) extract against the apple sawfly. The aim of this study was, therefore, to develop methods to predict the timing of Q. amara control in Sweden. A temperature sum model for timely placement of monitoring or mass-trapping sticky traps was validated for Swedish conditions. The average emergence of sawflies occurred at 169 degree days (SD = 20) counted from March 15 (threshold temperature 4 °C). The difference in emergence from existing first flight model of average and maximum 9 and 39 degree days (1 and 9 calendar days) was found acceptable. Accumulated oviposition of 85 % at full bloom (BBCH 65) suggests that mass trapping and monitoring could stop at this time. This is supported by a tendency of decreased trap catches during that period. Three application times for Q. amara were compared: (A) at petal fall (BBCH 67), (B) at a date calculated using female trap catch numbers and temperature sums, and (C) prior to peak egg hatch observed in the field. All treatments resulted in significantly lower percentage of damaged apples compared to the unsprayed control, with significantly less damage (1.3 %) in plots treated according to method (B). The results provide information on adult phenology and methods that could be used to determine timing of mass trapping and insecticide application against the apple sawfly.
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- View/download PDF
22. The morphology of landscape elements as predictors of water quality in glacial/boreal lakes
- Author
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Thierfelder, T.
- Published
- 1998
- Full Text
- View/download PDF
23. Effects of sieve size on chipper productivity, fuel consumption and chip size distribution for open drum chippers
- Author
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Eliasson, L., Hofsten, H., Johannesson, T., Raffaele Spinelli, and Thierfelder, T.
- Subjects
lcsh:SD1-669.5 ,Forest fuel ,Biomass ,Chip quality ,lcsh:Forestry ,biomass ,forest fuel ,chip quality - Abstract
Chip size distribution is an important quality variable not only for buyers of forest fuels, but also for chipping contractors as it influences both fuel consumption and productivity of chippers. Studies of disc chippers and of drum chippers with closed drums have shown that increased chip target length increases chipper productivity and decreases fuel consumption per ton of chips produced. For open drum chippers, chip length is partly controlled by the mesh size in the sieve. In order to evaluate how this sieve affects productivity and fuel consumption of chippers, two open drum machines for professional chipping of forest fuels were studied. Small chippers were represented by a Kesla 645, and larger ones by an Eschlböck Biber 92. The Kesla 645 was studied with 25, 50, and 100 mm sieves and the Biber 92 with 35, 50, and 100 mm sieves. With the 100 mm sieve the Kesla chipper produced 14.5 oven dry ton (odt) of chips per effective hour and the Biber 30.0 odt per effective hour. Fuel consumption per odt was 3.0 l for the Kesla and 2.1 l for the Biber. A reduction of sieve mesh size decreased productivity and increased fuel consumption for both machines. Reducing the mesh size decreased the size of produced chips for the Kesla, but not for the Biber. The sieve on the Biber seems to be a safety measure against oversized pieces whereas chip size is, as on a closed drum chipper, mainly controlled by the cut length of the knives.
24. Behaviour in dairy calves when weaned and separated in two steps from foster cows
- Author
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Jm, Loberg, Hernandez, C., Thierfelder, T., Margit Bak Jensen, Berg, C., Lidfors, L., Lidfors, Lena, Rundgren, Margareta, and Andersson, Maria
25. Standard probability density functions of characterizing water quality variables in dimictic glacial/boreal lakes
- Author
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Thierfelder, T.
- Subjects
LAKE ecology ,MATHEMATICAL analysis ,WATER quality - Abstract
With the secure supply of healthy fresh water being a threatened essentiality for the global society, compatibility among scientists working with water quality issues must be considered as highly prioritized. To achieve this, a standard that facilitates compatible comparisons between statistical models that describe and/or predict lake water quality should contribute. A large population of dimictic glacial/boreal lakes - with variable ranges wide enough to represent a majority of such lakes - is therefore analyzed with respect to probability density functions of the seven characterizing water quality variables pH, alkalinity, conductivity, hardness, color, Secchi depth, and total phosphorus concentration. With the lakes being limestone treated, theprimary variables are transformed to normal distribution in cases: 1; 'Before limestone treatment', 2; 'After limestone treatment', and 3; 'The entire database' (case 1 + case 2). It is concluded that the transformation functions derived in case 3 are sufficiently valid as optimal transformation functions in all three cases. This suggests that the transformation functions derived approximate the probability density functions of these important water quality variables in the generic class of dimictic glacial/boreal lakes, and that they should be well suited as transformation standards in natural, as well as in limestone treated lakes. It also implies that limestone treatment does not significantly alter the shape of the probability density functionsanalyzed. [ABSTRACT FROM AUTHOR]
- Published
- 1999
- Full Text
- View/download PDF
26. Environmental stressors and zoonoses in the Arctic: Learning from the past to prepare for the future.
- Author
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Andersen-Ranberg E, Nymo IH, Jokelainen P, Emelyanova A, Jore S, Laird B, Davidson RK, Ostertag S, Bouchard E, Fagerholm F, Skinner K, Acquarone M, Tryland M, Dietz R, Abass K, Rautio A, Hammer S, Evengård B, Thierfelder T, Stimmelmayr R, Jenkins E, and Sonne C
- Subjects
- Animals, Humans, Arctic Regions epidemiology, Biodiversity, Ecosystem, Environmental Pollution statistics & numerical data, One Health, Climate Change, Zoonoses epidemiology
- Abstract
The risk of zoonotic disease transmission from animals to humans is elevated for people in close contact with domestic and wild animals. About three-quarters of all known human infectious diseases are zoonotic, and potential health impacts of these diseases are higher where infectious disease surveillance and access to health care and public health services are limited. This is especially the case for remote circumarctic regions, where drivers for endemic, emerging, and re-emerging zoonotic diseases include anthropogenic influences, such as pollution by long-range transport of industrial chemicals, climate change, loss of biodiversity and ecosystem alterations. In addition to these, indirect effects including natural changes in food web dynamics, appearance of invasive species and thawing permafrost also affect the risk of zoonotic disease spill-over. In other words, the Arctic represents a changing world where pollution, loss of biodiversity and habitat, and maritime activity are likely driving forward occurrence of infectious diseases. As a broad international consortium with a wide range of expertise, we here describe a selection of case studies highlighting the importance of a One Health approach to zoonoses in the circumarctic, encompassing human health, animal health, and environmental health aspects. The cases highlight critical gaps in monitoring and current knowledge, focusing on environmental stressors and lifestyle factors, and they are examples of current occurrences in the Arctic that inform on critically needed actions to prepare us for the future. Through these presentations, we recommend measures to enhance awareness and management of existing and emerging zoonoses with epidemic and pandemic potential while also focusing on the impacts of various environmental stressors and lifestyle factors on zoonoses in the Arctic., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this pape., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
27. Associating Land Cover Changes with Patterns of Incidences of Climate-Sensitive Infections: An Example on Tick-Borne Diseases in the Nordic Area.
- Author
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Leibovici DG, Bylund H, Björkman C, Tokarevich N, Thierfelder T, Evengård B, and Quegan S
- Subjects
- Animals, Humans, Incidence, Encephalitis, Tick-Borne epidemiology, Ixodes, Lyme Disease epidemiology, Tick-Borne Diseases epidemiology
- Abstract
Some of the climate-sensitive infections (CSIs) affecting humans are zoonotic vector-borne diseases, such as Lyme borreliosis (BOR) and tick-borne encephalitis (TBE), mostly linked to various species of ticks as vectors. Due to climate change, the geographical distribution of tick species, their hosts, and the prevalence of pathogens are likely to change. A recent increase in human incidences of these CSIs in the Nordic regions might indicate an expansion of the range of ticks and hosts, with vegetation changes acting as potential predictors linked to habitat suitability. In this paper, we study districts in Fennoscandia and Russia where incidences of BOR and TBE have steadily increased over the 1995-2015 period (defined as 'Well Increasing districts'). This selection is taken as a proxy for increasing the prevalence of tick-borne pathogens due to increased habitat suitability for ticks and hosts, thus simplifying the multiple factors that explain incidence variations. This approach allows vegetation types and strengths of correlation specific to the WI districts to be differentiated and compared with associations found over all districts. Land cover types and their changes found to be associated with increasing human disease incidence are described, indicating zones with potential future higher risk of these diseases. Combining vegetation cover and climate variables in regression models shows the interplay of biotic and abiotic factors linked to CSI incidences and identifies some differences between BOR and TBE. Regression model projections up until 2070 under different climate scenarios depict possible CSI progressions within the studied area and are consistent with the observed changes over the past 20 years.
- Published
- 2021
- Full Text
- View/download PDF
28. Linking climate and infectious disease trends in the Northern/Arctic Region.
- Author
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Ma Y, Destouni G, Kalantari Z, Omazic A, Evengård B, Berggren C, and Thierfelder T
- Subjects
- Arctic Regions epidemiology, Climate Change, Humans, Incidence, Temperature, Communicable Diseases epidemiology, Communicable Diseases etiology
- Abstract
Recognition of climate-sensitive infectious diseases is crucial for mitigating health threats from climate change. Recent studies have reasoned about potential climate sensitivity of diseases in the Northern/Arctic Region, where climate change is particularly pronounced. By linking disease and climate data for this region, we here comprehensively quantify empirical climate-disease relationships. Results show significant relationships of borreliosis, leptospirosis, tick-borne encephalitis (TBE), Puumala virus infection, cryptosporidiosis, and Q fever with climate variables related to temperature and freshwater conditions. These data-driven results are consistent with previous reasoning-based propositions of climate-sensitive infections as increasing threats for humans, with notable exceptions for TBE and leptospirosis. For the latter, the data imply decrease with increasing temperature and precipitation experienced in, and projected for, the Northern/Arctic Region. This study provides significant data-based underpinning for simplified empirical assessments of the risks of several infectious diseases under future climate change., (© 2021. The Author(s).)
- Published
- 2021
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- View/download PDF
29. Healthy Ecosystems Are a Prerequisite for Human Health-A Call for Action in the Era of Climate Change with a Focus on Russia.
- Author
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Orlov D, Menshakova M, Thierfelder T, Zaika Y, Böhme S, Evengard B, and Pshenichnaya N
- Subjects
- Animals, Arctic Regions, Environmental Health, Humans, Russia epidemiology, Zoonoses, Climate Change, Communicable Diseases, Ecosystem
- Abstract
Throughout history, humans have experienced epidemics. The balance of living in nature encircled by microorganisms is delicate. More than 70% of today's emerging infections are zoonotic, i.e., those in which microorganisms transmitted from animals infect humans. Species are on the move at speeds never previously recorded, among ongoing climate change which is especially rapid at high latitudes. This calls for intensified international surveillance of Northern infectious diseases. Russia holds the largest area of thawing permafrost among Northern nations, a process which threatens to rapidly disrupt the balance of nature. In this paper, we provide details regarding Russian health infrastructure in order to take the first steps toward a collaborative international survey of Northern infections and international harmonization of the procured data.
- Published
- 2020
- Full Text
- View/download PDF
30. Discrepancies in data reporting of zoonotic infectious diseases across the Nordic countries - a call for action in the era of climate change.
- Author
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Omazic A, Berggren C, Thierfelder T, Koch A, and Evengard B
- Subjects
- Animals, Humans, Scandinavian and Nordic Countries epidemiology, Climate Change, Documentation standards, Population Surveillance methods, Zoonoses epidemiology
- Abstract
Emerging infections have in recent years caused enormous health problems. About 70% of these infections are zoonotic e.g. arise from natural foci in the environment. As climate change impacts ecosystems there is an ongoing transition of infectious diseases in humans. With the fastest changes of the climate occurring in the Arctic, this area is important to monitor for infections with potentials to be climate sensitive. To meet the increasing demand for evidence-based policies regarding climate-sensitive infectious diseases, epidemiological studies are vital. A review of registered data for nine potentially climate-sensitive infections, collected from health authorities in Denmark/Greenland, Finland, Iceland, Norway and Sweden, found that performing such studies across countries is constrained by incompatible reporting systems and differences in regulations. To address this, international standardisation is recommended.
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- 2019
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31. Identifying climate-sensitive infectious diseases in animals and humans in Northern regions.
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Omazic A, Bylund H, Boqvist S, Högberg A, Björkman C, Tryland M, Evengård B, Koch A, Berggren C, Malogolovkin A, Kolbasov D, Pavelko N, Thierfelder T, and Albihn A
- Subjects
- Animals, Arctic Regions epidemiology, Communicable Diseases etiology, Communicable Diseases veterinary, Europe epidemiology, Geography, Greenland epidemiology, Humans, Incidence, Prevalence, Russia epidemiology, Zoonoses etiology, Climate Change, Communicable Diseases epidemiology, Zoonoses epidemiology
- Abstract
Background: General knowledge on climate change effects and adaptation strategies has increased significantly in recent years. However, there is still a substantial information gap regarding the influence of climate change on infectious diseases and how these diseases should be identified. From a One Health perspective, zoonotic infections are of particular concern. The climate in Northern regions is changing faster than the global average. This study sought to identify climate-sensitive infectious diseases (CSIs) of relevance for humans and/or animals living in Northern regions. Inclusion criteria for CSIs were constructed using expert assessments. Based on these principles, 37 potential CSIs relevant for Northern regions were identified. A systematic literature search was performed in three databases using an explicit stepwise approach to determine whether the literature supports selection of these 37 potential CSIs., Results: In total, 1275 nominated abstracts were read and categorised using predefined criteria. Results showed that arthropod vector-borne diseases in particular are recognised as having potential to expand their distribution towards Northern latitudes and that tick-borne encephalitis and borreliosis, midge-borne bluetongue and the parasitic infection fasciolosis can be classified as climate-sensitive. Many of the other potential CSIs considered are affected by extreme weather events, but could not be clearly classified as climate-sensitive. An additional literature search comparing awareness of climate influences on potential CSIs between 1997-2006 and 2007-2016 showed an increase in the number of papers mentioning effects of climate change., Conclusions: The four CSIs identified in this study could be targeted in a systematic surveillance programme in Northern regions. It is evident that climate change can affect the epidemiology and geographical range of many infectious diseases, but there were difficulties in identifying additional CSIs, most likely because other factors may be of equal or greater importance. However, climate-ecological dynamics are constantly under change, and therefore diseases may fall in or out of the climate-sensitive definition over time. There is increasing awareness in the literature of the effects of climate change on infectious diseases over time.
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- 2019
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32. Physiotherapy treatment of the diabetic shoulder: health-related quality of life and measures of shoulder function regarding patients with type 1 diabetes.
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Kyhlbäck M, Söderlund A, Thierfelder T, and Elmgren Frykberg G
- Subjects
- Adult, Aged, Female, Humans, Male, Middle Aged, Pain Measurement, Physical Therapy Modalities, Quality of Life, Range of Motion, Articular physiology, Diabetes Mellitus, Type 1 physiopathology, Shoulder Joint physiopathology, Shoulder Pain physiopathology, Shoulder Pain rehabilitation
- Abstract
Purpose: The aim of this study was to investigate how health-related quality of life (HRQoL) and functional shoulder range of motion are affected among patients with diabetes with shoulder problems, treated with a specific physiotherapy programme. A further aim was to investigate how health-related quality of life, functional shoulder range of motion, pain intensity, and shoulder function correlate within the group of patients after the treatment period., Method: A pre-post treatment design was applied for a study group of ten patients with type 1 diabetes and shoulder problems. The physiotherapy treatment consisted of exercises promoting enhanced micro-circulation in the shoulder tissues, optimal shoulder co-ordination, and muscle relaxation. The Short Form-36 (SF-36), shoulder range of motion measures, the Shoulder Rating Scale - Swedish version, and pain intensity measures were used. The results regarding SF-36 were compared with the results of a control group of patients having either type 1 or type 2 diabetes and shoulder problems that did not receive any specific physiotherapy treatment., Results: As a potential result of physiotherapy training, a significant change towards higher scores was observed in the physical component summary (PCS) measure of SF-36. There was a significant improvement regarding PCS in the study group as compared with the control group. There were negative correlations between the four aspects of pain intensity and PCS and Shoulder Rating Scale - Swedish version, respectively, but a positive correlation between PCS and Shoulder Rating Scale - Swedish version. "Hand-raising" and "hand-behind-back" were significantly improved, and proved to be positively correlated with Shoulder Rating Scale - Swedish version., Conclusions: The results of this study indicate that patients with type 1 diabetes and shoulder problems, treated with a specific physiotherapy programme, may improve with respect to physical aspects of health-related quality of life, and partially regain their range of motion in the shoulder joint. Based on these results, the associated treatment protocol may be recommended for physiotherapy treatment in such patients. Implications for Rehabilitation Diabetes is a significant risk factor in the development of shoulder pain and disability. Health-related quality of life (HRQoL) is affected in patients with diabetes and shoulder problems. A specific physiotherapy programme may improve physical aspects of HRQoL in patients with diabetes and shoulder problems. Specific physiotherapy intervention may also improve range of motion in the shoulder joint in patients with diabetes and shoulder problems.
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- 2019
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33. Time lag between peak concentrations of plasma and salivary cortisol following a stressful procedure in dairy cattle.
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Hernandez CE, Thierfelder T, Svennersten-Sjaunja K, Berg C, Orihuela A, and Lidfors L
- Subjects
- Animals, Biomarkers analysis, Biomarkers blood, Female, Hydrocortisone blood, Male, Saliva chemistry, Time Factors, Cattle physiology, Hydrocortisone analysis, Social Isolation, Stress, Physiological
- Abstract
Background: Measurement of salivary cortisol has been used extensively as a non-invasive alternative to blood sampling to assess adrenal activity in ruminants. However, there is evidence suggesting a considerable delay in the transfer of cortisol from plasma into saliva. Previous studies in cattle have used long sampling intervals making it difficult to characterise the relationship between plasma and salivary cortisol (PLCort and SACort, respectively) concentrations at different time points and determine whether or not such a time lag exist in large ruminants. Therefore, the objective of this study was to characterise the relationship between plasma and salivary cortisol and determine if there is a significant time lag between reaching peak cortisol concentrations in plasma and saliva across a 4.25 h time-period, using short sampling intervals of 10-15 min, following social separation in dairy cattle.Five cows were separated from their calves at 4 days after calving, and six calves were separated from a group of four peers at 8 weeks of age. Following separation, the animals were moved to an unfamiliar surrounding where they could not see their calves or pen mates. The animals were catheterised with indwelling jugular catheters 1 day before sampling. Blood and saliva samples were obtained simultaneously before and after separation., Results: In response to the stressors, PLCort and SACort increased reaching peak concentrations 10 and 20 min after separation, respectively. This suggested a 10 min time lag between peak cortisol concentrations in plasma and saliva, which was further confirmed with a time-series analysis. Considering the 10 min time lag, SACort was strongly correlated with PLCort (P < 0.0001)., Conclusions: Salivary cortisol correlates well with plasma cortisol and is a good indicator of the time-dependent variations in cortisol concentrations in plasma following acute stress. However, there is a time lag to reach peak cortisol concentrations in saliva compared to those in plasma, which should be considered when saliva samples are used as the only measure of hypothalamic-pituitary-adrenal axis response to stress in cattle.
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- 2014
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34. Physiotherapy treatment of the diabetic shoulder: a longitudinal study following patients with diabetes and shoulder pain using a pre-post treatment design.
- Author
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Kyhlbäck M, Schröder Winter H, Thierfelder T, and Söderlund A
- Subjects
- Activities of Daily Living, Clinical Protocols, Female, Humans, Longitudinal Studies, Male, Middle Aged, Pain Management methods, Pain Measurement methods, Sweden, Treatment Outcome, Diabetes Mellitus, Type 1 complications, Exercise Therapy methods, Shoulder Pain diagnosis, Shoulder Pain etiology, Shoulder Pain therapy
- Abstract
Purpose: The aim of this study was to describe and evaluate a physiotherapy program targeted to reduce pain intensity and improve the daily functioning of diabetics with shoulder problems. It was hypothesized that patients receiving specific physiotherapy treatment improved more frequently and rapidly than diabetic patients followed up without specific physiotherapeutic intervention., Method: A pre-post treatment design was completed for a group of 10 subjects. The treatment protocol, also applied during the daily activities of the subjects, was aiming at reducing pain intensity and shoulder stiffness and improving impaired functioning in daily activities by muscle relaxation, light-load exercise and enhancing proper shoulder co-ordination., Results: The group analysis showed significant decrease of pain intensity level as well as improved shoulder functioning and sustained level of subject self-efficacy beliefs throughout the study period., Conclusions: The results suggest that it is possible to relieve shoulder pain intensity and improve daily activities of patients with diabetes-related shoulder problems by employing a physiotherapy program focusing on muscle relaxation, light-load exercise and on the enhancement of proper shoulder co-ordination in daily activities., Implications for Rehabilitation: A physiotherapy program can be effective in reducing pain and improving shoulder function in diabetics with shoulder problems. The treatment should focus on muscle relaxation, light-load exercise and on the enhancement of proper shoulder co-ordination in daily activities.
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- 2014
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35. Ecosystem change and stability over multiple decades in the Swedish subarctic: complex processes and multiple drivers.
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Callaghan TV, Jonasson C, Thierfelder T, Yang Z, Hedenås H, Johansson M, Molau U, Van Bogaert R, Michelsen A, Olofsson J, Gwynn-Jones D, Bokhorst S, Phoenix G, Bjerke JW, Tømmervik H, Christensen TR, Hanna E, Koller EK, and Sloan VL
- Subjects
- Animals, Arctic Regions, Human Activities, Plants, Population Dynamics, Sweden, Temperature, Ultraviolet Rays, Climate Change, Ecosystem
- Abstract
The subarctic environment of northernmost Sweden has changed over the past century, particularly elements of climate and cryosphere. This paper presents a unique geo-referenced record of environmental and ecosystem observations from the area since 1913. Abiotic changes have been substantial. Vegetation changes include not only increases in growth and range extension but also counterintuitive decreases, and stability: all three possible responses. Changes in species composition within the major plant communities have ranged between almost no changes to almost a 50 per cent increase in the number of species. Changes in plant species abundance also vary with particularly large increases in trees and shrubs (up to 600%). There has been an increase in abundance of aspen and large changes in other plant communities responding to wetland area increases resulting from permafrost thaw. Populations of herbivores have responded to varying management practices and climate regimes, particularly changing snow conditions. While it is difficult to generalize and scale-up the site-specific changes in ecosystems, this very site-specificity, combined with projections of change, is of immediate relevance to local stakeholders who need to adapt to new opportunities and to respond to challenges. Furthermore, the relatively small area and its unique datasets are a microcosm of the complexity of Arctic landscapes in transition that remains to be documented.
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- 2013
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36. The creosote content of used railway crossties as compared with European stipulations for hazardous waste.
- Author
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Thierfelder T and Sandström E
- Subjects
- Creosote toxicity, European Union, Hazardous Waste adverse effects, Polycyclic Aromatic Hydrocarbons toxicity, Soil Pollutants chemistry, Soil Pollutants toxicity, Creosote analysis, Environmental Monitoring, Hazardous Waste analysis, Polycyclic Aromatic Hydrocarbons analysis, Railroads, Soil Pollutants analysis
- Abstract
Through the history of railways, wooden crossties impregnated with potentially hazardous creosote tar have supported the rails. With impregnated crossties having a lifespan of approximately 50 years, their creosote content is considered as quite safely stored while in dug-down usage. This situation of relative safety does, however, change into acute risk upon replacement and destruction. Carrying a highly flammable content, creosote crossties discharge a pulse of carcinogenic PAH compounds if burnt as ordinary waste. Safe destruction is therefore required if concentrations exceed a critical limit stipulated by the European Union. Since safe destruction is a process of considerable expense, there is a tendency among financial stakeholders to underestimate the creosote content of used railway crossties. In order to actually test whether concentrations generally exceed the critical limit, a set of used creosote ties was therefore sampled while still situated in the railway embankment. With a standard sum of sixteen PAH compounds used as an expression of their total creosote content, the generic concentration was formally inferred and found to significantly exceed the critical limit. The same applies to the fraction of seven carcinogenic PAH compounds, that alone exceed the stipulated limit for hazardous waste. It was also found that the material of railway embankments, whether or not the crossties were used in switches and/or railway yards, and sample depth within the crossties, has a significant effect on creosote concentrations. Regardless of the status of these factors, the concentrations significantly exceed the critical limit that defines hazardous waste within the European Union.
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- 2008
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37. Functional microbial diversity of the railway track bed.
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Cederlund H, Thierfelder T, and Stenström J
- Subjects
- Ecosystem, Environmental Monitoring methods, Sweden, Biomass, Railroads, Soil analysis, Soil Microbiology
- Abstract
Railways constitute relatively unexplored microbial habitats. Little is known about the amounts, activities or distributions of microorganisms and their associated heterotrophic capabilities on railway embankments. The aim of this study was to investigate the microbiology of two Swedish railway tracks in order to fill some of the gaps in the available information. We estimated microbial biomass by means of substrate-induced respiration, microbial activity as basal respiration (BR) and as a kinetically derived parameter (r) hypothesised to correspond to the active fraction of the microbial biomass. It was confirmed that the microbial biomass and activity were low as compared with agricultural soils and that their distributions were distinctly positively skewed. Spatial Kriging revealed that covariance structures were sustained on a scale smaller than the employed sampling grid (<1 m). Substrate richness (SR), as measured with Biolog ECO plates, was used as a quantitative measure of functional diversity. SR correlated to microbial activity and SIR, indicating that functional traits were lacking where the microbial biomass was low or less active. The dependence of microbial activities on basic soil characteristics were inferred by separately designed general linear models. Water content was found to be the most important factor moderating basal respiration and functional diversity, whereas the organic matter content was identified as the most important covariate for SIR. Multivariate analysis of the carbon source utilisation patterns of the Biolog plates with equivalent average well-colour development revealed homogenous substrate utilisation among samples. This indicates that the microbial functional potential is randomly distributed in the railway track bed. In combination, our findings imply that the ecosystem functionality of railway embankments may be seriously hampered as compared with agricultural soils. This has consequences for the risk assessment of herbicides applied to railways.
- Published
- 2008
- Full Text
- View/download PDF
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