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Essays on Strategy-proof Social Choice
Popular Abstract in Swedish Denna avhandling ger ett bidrag till teorin om strategisäkra kollektiva beslut. I denna teori undersöks under vilka förutsättningar det är möjligt att konstruera omröstningsprocedurer (hädanefter kallade för kollektiva valfunktioner) som är strategisäkra i den bemärkelsen att ingen väljare kan ändra utfallet av en omröstning till sin fördel genom att inte rösta enligt sThis thesis makes a contribution to strategy-proof social choice theory, in which one investigates the conditions under which it is possible to construct social choice functions (i.e., voting procedures) that can never be manipulated in the sense that some voter, by misrepresentation of his true preferences, can change the outcome of a voting and obtain an alternative he prefers to the one that ho
'Per clerum and populum'? : Legal Terminology and Episcopal Appointments in Denmark 1059–1225
The phrase per clerum et populum (“by clergy and people”) was traditionally used to describe how the election of a bishop had been or should be undertaken. Over the course of the twelfth century this changed. Ecclesiastical legislation was step by step revised and codified. The aim of the reformers was to safeguard the autonomy of the Church and to reduce lay influence. The purposes of this articl
Bark beetles as lidar targets and prospects of photonic surveillance
Forestry is raising concern about the outbreaks of European spruce bark beetle, Ips typographus, causing extensive damage to the spruce forest and timber values. Precise monitoring of these beetles is a necessary step towards preventing outbreaks. Current commercial monitoring methods are catch‐based and lack in both temporal and spatial resolution. In this work, light scattering from beetles is c
Ekologiska fokusarealer i samverkan : Utvärdering av effekter på ekosystemtjänster, jordbruk och administration
Visions of Post-Independence India in Arne Sucksdorff’s Documentaries
This article studies two post-war documentary films set in India, Indian Village (1951) and The Wind and the River (1953), directed by the celebrated Swedish filmmaker Arne Sucksdorff. While many scholars have studied these films in relation to Sucksdorff’s biography and Swedish national cinema, less emphasis has been placed on these Indian documentaries in relation to other international document
Salinity Effects on Iron Speciation in Boreal River Waters
Previous studies report high and increasing iron (Fe) concentrations in boreal river mouths. This Fe has shown relatively high stability to salinity-induced aggregation in estuaries. The aim of this study was to understand how the speciation of Fe affects stability over salinity gradients. For Fe to remain in suspension interactions with organic matter (OM) are fundamental and these interactions c
Peatland dynamics in response to past and potential future climate change : A regional modelling approach
En majoritet av de nordliga torvmarkerna utvecklades under holocen som ett resultat av en positiv massbalans mellan nettoprimärproduktion och heterotrofa nedbrytningshastigheter. Sedan dess har de lagrat stora mängder kol i terrestra ekosystem. En betydande del av dessa områden sammanfaller också med regioner med underliggande permafrost och uppvisar olika ackumulationsmönster av torv. Således, föThe majority of the northern peatlands developed during the Holocene as a result of a positive mass balance between net primary productivity (NPP) and heterotrophic decomposition rates. Over that time they have sequestered a huge amount of carbon in terrestrial ecosystems. A significant proportion of these areas also coincides with areas underlain with permafrost and shows a diverse range of peat
Improving agricultural pollution abatement through result-based payment schemes
Action-based payments that compensate farmers for adopting land-management measures to preserve and en- hance the environment have been criticized for being ineffective. The root of the problem is that farmers are not paid for achieving a desired environmental benefit, but compensated for their costs of management. There is growing interest in formulating result-based economic incentives. By payin
Ecosystem services across the aquatic-terrestrial boundary : Linking ponds to pollination
Many small farmland ponds are built for nutrient retention, the conservation of biodiversity or both, yet they are relatively neglected habitats. For example, little is known about the potential for ponds to influence populations of beneficial terrestrial insects, deliver ecosystem services across the aquatic-terrestrial boundary and affect crop yield in insect-pollinated cash crops.We assessed wh
Weed–crop competition under improved nutrient management reveals trade-off between yields and weed diversity in organic farming
In the pursuit of more sustainable agriculture, weeds play a dual role by threatening crop production and simultaneously contributing to farmland biodiversity. Management actions such as the use of fertilisers (fertilisation) may change weed abundance and community composition with consequences for both weed–crop competition and biodiversity. Alleviating the balance between yield and biodiversity
Biodiversity modulates the cross-community scaling relationship in changing environments
Organismal abundance tends to decline with increasing body size. Metabolic theory links this size structure with energy use and productivity, postulating a size–abundance slope of −0.75 that is invariant across environments. We tested the robustness of this relationship across gradients of protist species richness (1–6 species), temperature (15°C–25°C) and time. Using replicated microcosms, we pro
Decision-support tools for pollinators and pollination in agricultural landscapes : A systematic map
Insect pollinators are declining globally, partly due to agricultural intensification, which threatens biodiversity and ecosystem services. To help decision-makers make informed choices, a variety of tools such as softwares, websites and frameworks have been developed to guide pollinator-friendly management and conservation. However, the lack of a comprehensive overview of these tools limits stake
Continental Patterns of Phenotypic Variation Along Replicated Urban Gradients : A Mega-Analysis
Individual variation among and within natural populations can have eco-evolutionary implications by, for example, affecting species interactions or evolutionary potential. Urban systems present a unique opportunity to evaluate how environmental change shapes variation since urban phenotypic differentiation is widely documented on contemporary timescales. We introduce and test three hypotheses to d
Land Use Change Consistently Reduces α- But Not β- and γ-Diversity of Bees
Land use change threatens global biodiversity and compromises ecosystem functions, including pollination and food production. Reduced taxonomic α-diversity is often reported under land use change, yet the impacts could be different at larger spatial scales (i.e., γ-diversity), either due to reduced β-diversity amplifying diversity loss or increased β-diversity dampening diversity loss. Additionall
Landscape and Climate-Associated Selection in the Native and Widespread Bumblebee, Bombus terrestris
Anthropogenic land-use and climate change pose novel selection pressures on bees, yet their evolutionary responses in terms of morphological or physiological adaptations remain unclear. While adaptive responses are expected, these may be constrained by gene flow when changes in selection pressures are spatially heterogeneous. The buff-tailed bumblebee (Bombus terrestris) is a widespread species th
“Everyone decided to declare war on the forest”: between territorial peace and pacification in the Colombian Andean-Amazon
In post-peace agreement Colombia, everyone declared war on the forest. In the Putumayo region, these wars take their own particular forms. Scientifically, the Putumayo is described as an Andean-Amazonic rainforest. For the indigenous and local inhabitants of the Putumayo, it is the Andean-Amazonic selva. We present three wars on the forest with material and discursive specificities and critically
Abandonment or biomass production? Phytodiversity responses to land-use changes of semi-natural grasslands in northern Europe
European semi-natural grasslands are hotspots for biodiversity and important for the provisioning of multiple ecosystem services, but their extent has declined considerably during the past century. Increasing demands for agricultural and forest biomass risk causing further loss of grasslands, raising concern about a goal conflict between climate mitigation and biodiversity conservation. This study
Disrupting climate adaptation lock‑ins? : Swedish local civil servants’ strategies to enable adaptation
Local climate adaptation is constrained and steered along specific paths by various mechanisms, which together form a lock-in. The study focuses on Swedish local civil servants’ strategies to deal with climate adaption lock-ins and to what extent the strategies disrupt the lock-ins. Interviews were conducted with civil servants in six municipalities, complemented by inter-views at regional and nat
Distribution of infectious and parasitic agents among three sentinel bee species across European agricultural landscapes
Infectious and parasitic agents (IPAs) and their associated diseases are major environmental stressors that jeopardize bee health, both alone and in interaction with other stressors. Their impact on pollinator communities can be assessed by studying multiple sentinel bee species. Here, we analysed the field exposure of three sentinel managed bee species (Apis mellifera, Bombus terrestris and Osmia
