| 1. |
- de Jong, R, et al.
(författare)
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Climate and Peatlands
- 2010
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Ingår i: Changing Climates, Earth Systems, and Society. - 9789048187157 - 9789048187164 ; , s. 85-122
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 2. |
- O'Gorman, Eoin J., et al.
(författare)
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Impacts of Warming on the Structure and Functioning of Aquatic Communities : Individual-to Ecosystem-Level Responses
- 2012
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Ingår i: Advances in Ecological Research, Vol 47. - : Elsevier. - 9780123983152 ; , s. 81-176
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Bokkapitel (refereegranskat)abstract
- Environmental warming is predicted to rise dramatically over the next century, yet few studies have investigated its effects in natural, multi-species systems. We present data collated over an 8-year period from a catchment of geothermally heated streams in Iceland, which acts as a natural experiment on the effects of warming across different organisational levels and spatiotemporal scales. Body sizes and population biomasses of individual species responded strongly to temperature, with some providing evidence to support temperature size rules. Macroinvertebrate and meiofaunal community composition also changed dramatically across the thermal gradient. Interactions within the warm streams in particular were characterised by food chains linking algae to snails to the apex predator, brown trout These chains were missing from the colder systems, where snails were replaced by much smaller herbivores and invertebrate omnivores were the top predators. Trout were also subsidised by terrestrial invertebrate prey, which could have an effect analogous to apparent competition within the aquatic prey assemblage. Top-down effects by snails on diatoms were stronger in the warmer streams, which could account for a shallowing of mass-abundance slopes across the community. This may indicate reduced energy transfer efficiency from resources to consumers in the warmer systems and/or a change in predator-prey mass ratios. All the ecosystem process rates investigated increased with temperature, but with differing thermal sensitivities, with important implications for overall ecosystem functioning (e.g. creating potential imbalances in elemental fluxes). Ecosystem respiration rose rapidly with temperature, leading to increased heterotrophy. There were also indications that food web stability may be lower in the warmer streams.
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| 3. |
- Callaghan, Terry V., et al.
(författare)
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Changing snow cover and its impacts
- 2011
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Ingår i: Snow, Water, Ice and Permafrost in the Arctic (SWIPA). - Oslo : Arctic Monitoring and Assessment Programme. - 9788279710714 ; , s. 4:1-4:58
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Bokkapitel (refereegranskat)
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| 4. |
- Hansson, S. O., et al.
(författare)
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Policycykeln : En modell för beslutsprocesser i miljöfrågor
- 2006
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Ingår i: Karin Edvardsson och Sven Ove Hansson (red), Vägar till ett effektivt miljöarbete. - Umeå : Boréa bokförlag. - 9189140478
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- I kapitlet diskuteras utifrån policyprocessens olika steg hur beslutsprocesser inom miljöområdet kan och bör studeras.
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| 5. |
- Jennische, M., et al.
(författare)
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Språk, tal och kommunkation samt sväljning
- 2006
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Ingår i: Rehabiliteringsmedicin. Teori och praktik. - Lund : Studentlitteratur. - 9789144045078 ; , s. 219-31
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 6. |
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| 7. |
- Johansson, Victoria, et al.
(författare)
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Using Eye tracking technology to study digital writing processes
- 2023
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Ingår i: Research Methods in the Study of L2 Writing Processes. - : John Benjamins Publishing Company. ; , s. 183-200
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Bokkapitel (populärvet., debatt m.m.)abstract
- This chapter presents an overview of eye tracking combined with tools for capturing digital writing (foremost keystroke logging). This includes a general rationale why eye tracking is relevant for research on writing processes, how the technique works, and pros and cons of different eye trackers and methodological designs. The chapter describes previous L1 and L2 writing studies which have used eye tracking to illustrate the type of questions that can be addressed by this technique. Finally some methodological challenges are highlighted, and best practices are suggested. It is emphasized that information of writers' visual attention can enrich real-time writing studies, but that the researcher must pose research questions and opt for designs bearing in mind the advantages and limitations of the technique.
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| 8. |
- Johansson, Victoria, et al.
(författare)
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Using keystroke logging for studying L2 writing processes
- 2023
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Ingår i: Research Methods in the Study of L2 Writing Processes. - : John Benjamins Publishing Company. ; , s. 161-182
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Bokkapitel (populärvet., debatt m.m.)abstract
- This chapter presents an overview of keystroke logging. The chapter includes a general rationale for why and when the method is appropriate, how the technique works, and pros and cons with different methodological combinations of keystroke logging. Further, the chapter briefly outlines some previous L2 writing keystroke logging studies to illustrate the type of questions that can be addressed by this data collection technique. Finally, we discuss som methodological challenges and suggest best practices for using the method
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