Filtyp
This study presents a new land cover map for the Upper Paraná River Basin (UPRB-2015), with high spatial resolution (30 m), and a high number of calibration and validation sites. To the new map, 50 Landsat-8 scenes were classified with the Support Vector Machine (SVM) algorithm and their level of agreement was assessed using overall accuracy and Kappa coefficient. The generated map was compared by
The stable isotope of carbon, 13C, has been used in several studies for source characterization of carbonaceous aerosol since there are specific signatures for different sources. In rural areas, the influence of different sources is complex and the application of δ13C for source characterization of the total carbonaceous aerosol (TC) can therefore be difficult, especially the separation between bi
It has been long recognised that dispersal is an important life-history trait that plays a key role in the demography and evolution of populations and species. This then suggests that dispersal play a central role in the response of populations and species to ever-increasing global change, including climate change, habitat loss and fragmentation, and biological invasions. During a symposium held a
Global warming is driving environmental change in the Arctic. However, our current understanding of this change varies strongly among different environmental disciplines and is limited by the number and distribution of field sampling locations. Here, we use a quantitative framework based on multivariate statistical modeling to present the current state of sampling across environmental disciplines
Tree phenology has been recognized as an important indicator of climate change, and a wide range of budburst models have been developed. The models differ in temperature sensitivity, and the choice of model can therefore influence the result of climate impact assessments. In this study we compared the ability of 15 models to simulate budburst of the main forest tree species in Sweden. Records on t
Background: In Ethiopia, nearly 70% of the population resides in areas prone to malaria infection. The objective of this study is to evaluate the impact of indoor residual spraying (IRS) on the incidence of malaria in East Shoa Zone of Ethiopia. Methods: Data from the registers of malaria cases at Debrezeit Malaria Control Center in East Shoa Zone of Ethiopia were collected and analyzed. Records o
This essay examines especially Russia`s role in the civil war in Syria that started on 15 March year 2011. External actors` political views, their cooperation with Russia and their interests in Syria have also been processed in this paper. My methodology consists of qualitative text analysis. An open approach was used when I have practiced my textual analysis. This means that the investigation is
Under the current accounting systems, emissions produced when biomass is burnt for energy are accounted as zero, resulting in what is referred to as the 'carbon neutrality' assumption. However, if current harvest levels are increased to produce more bioenergy, carbon that would have been stored in the biosphere might be instead released in the atmosphere. This study utilizes a comparative approach
Ladyfest Sweden is a cultural festival which aims to create a cultural space of expression for women, thus the artists and the organizers are women. It is organized by three different groups in three different cities: Malmö, Stockholm and Göteborg. This thesis is focused on Ladyfest Malmö, all the field work being realized with this group. We tried to include this phenomenon in a global and a part
Popular Abstract in Swedish När man hör ordet ”klimatförändringar” tänker många direkt på en förhöjd temperatur – så kallad global uppvärmning. Även om en förhöjd temperatur är en viktig del av framtida klimatförändringar så är det inte den enda förändringen vi kan förvänta oss. Sjöar på norra halvklotet och således även i Sverige har under de senaste årtiondena fått en ökad vattenfärg. Orsaken baThe effects of increasing temperatures, in light of climate change, have been a well-studied topic during the past decades. However, aquatic ecosystems are also faced with additional challenges such as increasing water colour, known as “brownification”. Although we know that temperature and water colour will increase simultaneously this has been given little attention in ecological research. In th
Popular Abstract in Swedish Vi lever i ett samhälle under ständig utveckling där användandet av nya kemikalier ökar explosionsartat. Med vardagligt användande av avancerade material såsom extremt tunna skärmar, billiga och miljövänliga bekämpningsmedel och läkemedel – vilka ofta är inspirerade av naturens komplexitet – kommer ett behov av organisk syntes. För att tillverka den här typen av komplicThis thesis deals with the development of novel methodologies for the synthesis of hetero- and carbocycles enabled by transition metal catalysis. The second chapter of the thesis describes a gold-catalyzed three-component reaction to form a variety of substituted oxazoles from readily available N-benzylimines, terminal alkynes, and acyl chlorides. Sacrificial benzyl groups are used to merge two o
Popular Abstract in Swedish För att ge en god omvårdnad behövs kunskaper om ätproblem som helhet och om möjliga hinder för optimalt näringsintag hos äldre patienter, särskilt de med stroke. Sådana kunskaper behövs eftersom åldrandet i sig självt eller tillsammans med sjukdom, t.ex. stroke och dess följder, kan påverka förmågan att äta och därmed också näringsintaget med ökad risk för såväl undernäThe aim of this thesis was to describe eating difficulties and interventions to improve eating among elderly patients, especially those with stroke, to make comparisons between patients with dysphagia and those without (Papers I & II), those with and without assisted eating (Paper IV), and to analyse the relation between eating difficulties, nutritional status (Papers II-V), pressure ulcers (P
Popular Abstract in Swedish Hur man värderar resultat av kirurgisk behandling av ländryggens degenerativa åkommor är ett stort, komplext och delvis kontroversiellt ämne. Denna avhandling studerar resultatvärdering med olika metoder och instrument, huvudsakligen baserat på resultat från det nationella svenska ländryggskirurgiregistret. Arbete I. Inventering av befintliga instrument i litteraturen No consensus regarding outcomes assessment in spine patients exists. Health-Related Quality of Life (HRQoL) questionnaires are increasingly used. The objective of this thesis was the evaluation of HRQoL measures before and after lumbar spine surgery, and their relation to other evaluation parameters as well as relevance of differences. The patients included were operated on for lumbar spine disor
A significant portion of the large amount of carbon (C) currently stored in soils of the permafrost region in the Northern Hemisphere has the potential to be emitted as the greenhouse gases CO2 and CH4 under a warmer climate. In this study we evaluated the variability in the sensitivity of permafrost and C in recent decades among land surface model simulations over the permafrost region between 19
Methane (CH4) oxidation in well-drained soils is a key process contributing to the global CH4 sink. Yet, temporal and depth-specific CH4 oxidation is rarely described despite being critical for the surface net CH4 uptake. Here, we linked year-round field observations of CH4 fluxes in well-drained cultivated soils with subsurface CH4 concentrations, laboratory incubations, and process-based modelin
While many studies have examined carbon dynamics of boreal ecosystems following wildfire, research on forest-atmosphere carbon fluxes during widespread smoke events from adjacent active wildfires is limited. We examined eddy covariance carbon exchange adjacent to the May 2011 Utikuma Complex wildfire in central Alberta, Canada. Over a one-week period while the wildfire was burning <10 km from the
Accurate maps of past land cover and human land use are necessary for studying the impact of anthropogenic land-cover changes, such as deforestation, on the climate. The maps of past land cover should ideally be separated into naturally occurring vegetation and human-induced changes, thereby enabling the quantification of the effect of human land use on the past climate. A Bayesian hierarchical mo
