https://researchdata.se/en/catalogue Search results en The research project Political Resocialization of Immigrants (PRI) aimed to examine the political resocialization of immigrants in Sweden, with particular focus on political interest and participation. The overarching goal of the project was to explore immigrants’ relationship to Swedish society and the political system, their living conditions, experiences of the migration process, and the factors that may encourage increased political engagement. Furthermore, the study investigated political attitudes and behaviors, perceptions of political representatives and demands, as well as access to information about the Swedish administrative and political systems. The first major round of data collection was carried out between spring 1975 and spring 1976 through personal interviews. From among those who participated in this initial phase, a new sample was selected for follow-up interviews conducted immediately after the 1976 general election—the first Swedish election in which immigrants had voting rights. The initial interview covered a wide range of topics, including the timing of immigration to Sweden and specifically to Stockholm, the number of previous places of residence, language proficiency of the respondent and of any spouse and children, reading habits (Swedish and foreign newspapers), news consumption (Swedish vs. foreign sources), behavior in the face of potential unemployment, social networks and leisure activities, membership and level of activity in associations, knowledge of where to turn for help in various situations in Stockholm, contacts with public authorities, perceptions of key societal problems, interest in Swedish politics, electoral participation in the country of origin and in Sweden, comparisons between the current situation in Sweden and that in the country of origin across several domains, and perceived social status in relation to both other immigrants and Swedes. The interview also included questions about current and previous employment, education, self-assessed position in the social hierarchy in both the country of origin and in Sweden, as well as the religiosity and associational activity of both the respondent and their parents. In connection with the interview, respondents were also asked to complete a questionnaire. This included approximately thirty general statements and several items specifically addressing perceptions of their own immigrant group, all to be rated for agreement. The questionnaire also included a number of factual questions. The post-election interview focused on electoral engagement and experiences. It included questions about which election broadcasts had been followed on radio or television, participation in educational courses related to the election, which informational brochures had been received, attendance at political meetings, knowledge of candidates, voting behavior, perceived key election issues, political parties’ engagement with immigrant issues, attempts to influence others' voting choices, comparisons between Swedish and foreign political parties, interest in the election outcome, and the timing of the decision to vote—or not to vote. Thu, 11 Jun 2026 11:56:24 GMT https://researchdata.se/en/catalogue/dataset/snd0459-1 https://researchdata.se/en/catalogue/dataset/snd0459-1 Stockholm University Tomas Hammar The central aim of the study is looking at various aspects of political perception as a function of socio-political ideology. The politically percepted objects consists mainly of political parties, party-leaders and countries. The measurement of political perception is made through multi-dimensional scaling, semantic differential and political differential. Political ideology is operationalized through party affiliation and socio-political attitude (measured with a specially designed scale). From these data some indexes are generated on the individual level for cognitive articulation and cognitive differentiation which then are related to the individual's socio-political ideology. The first part of the study contains questions about attitudes to various phenomena in society, socio-economical questions, party preferences (own, parents), education of relatives, estimation of: left-right, religiosity and extremism. The second part (where the sample is a subgroup of the first part's sample) contains the same questions plus estimations of: some Swedish politicians, countries (Sweden, USA, the Soviet Union and China) and Swedish political parties. Thu, 23 Apr 2026 13:18:06 GMT https://researchdata.se/en/catalogue/dataset/snd0210-1 https://researchdata.se/en/catalogue/dataset/snd0210-1 Stockholm University Bo Ekehammar The study tries to find out what interaction there is between employees working situation and working conditions and their perception of and attitudes towards different types of changes in society. The study is made in two steps, first all 1294 respondents answered the questionnaire and then 164 of them were interviewed in the second step. Wed, 01 Apr 2026 14:46:54 GMT https://researchdata.se/en/catalogue/dataset/snd0094-1 https://researchdata.se/en/catalogue/dataset/snd0094-1 Uppsala University Ulf Himmelstrand A widely argued view is that dominant mainstream parties have become less ideologically distinct over time. Still, although this is a dominant and reoccurring thesis, we argue that it is largely unsubstantiated. Therefore, the goal of this project is to systematically compare the evolution of ideas and policies supplied by political parties, from the 1970s to the 2010s, in eight Western European countries: Denmark, France, Germany, Ireland, the Netherlands, Norway, Sweden, and United Kingdom. The project aimed to answer the following two questions: To what extent are the ideas and policies of political parties converging or diverging in Western European party systems? Are changes in the parties’ ideas and policies initiated mainly by the parties, or are they adjusting to voter demand arising from social changes? Additionally, the project breaks new ground by testing central hypotheses of party system changes on unique data. We study government declaration with in-depth, qualitative, analyses of the actual ideas expressed in these documents, over time. The aim has been to collect all types of data as close as possible to the middle of each decade, i.e., close to 1975, 1985, 1995, 2005 and 2015. The project works with various data files. In this part, the project focuses on government declarations in Western Europe from the 1970s through the 2010s. Fri, 06 Mar 2026 07:55:37 GMT https://researchdata.se/en/catalogue/dataset/2022-264-1 https://researchdata.se/en/catalogue/dataset/2022-264-1 Linnaeus University Magnus Hagevi Sofie Blombäck Marie Demker Jonas Hinnfors Karl Loxbo A widely argued view is that dominant mainstream parties have become less ideologically distinct over time. Still, although this is a dominant and reoccurring thesis, we argue that it is largely unsubstantiated. Therefore, the goal of this project is to systematically compare the evolution of ideas and policies supplied by political parties, from the 1970s onwards, in eight Western European countries: Denmark, France, Germany, Ireland, the Netherlands, Norway, Sweden, and United Kingdom. The project aimed to answer the following two questions: To what extent are the ideas and policies of political parties converging or diverging in Western European party systems? Are changes in the parties’ ideas and policies initiated mainly by the parties, or are they adjusting to voter demand arising from social changes? Additionally, the project breaks new ground by testing central hypotheses of party system changes on unique data. We supplement existent content analyses of election manifestos with in-depth, qualitative, analyses of the actual ideas expressed in these documents, over time. The aim has been to collect all types of data as close as possible to the middle of each decade, i.e., close to 1975, 1985, 1995, 2005 and 2015. The project works with various data files. In this part, the project focuses on election manifestos of political parties in Western Europe from the 1970s through the 2010s Fri, 06 Mar 2026 07:54:21 GMT https://researchdata.se/en/catalogue/dataset/2022-262-1 https://researchdata.se/en/catalogue/dataset/2022-262-1 Linnaeus University Magnus Hagevi Sofie Blombäck Marie Demker Jonas Hinnfors Karl Loxbo Inventory to follow the population dynamics of small rodents inluding voles (Clethrionomys glareolus* & Microtus agrestis), mice (Apodemus flavicollis & Apodemus sylvaticus) and shrews (Sorex araneus & Sorex minutus); *species dominates the catches all years. 20 Plots x 50 Traps x 3 Days (traps are checked for catches each day) in May and October each year (total 3000 trap days per season). Plots are distributed regularly over Grimsö Research Area (app. 13.000 ha). Data is presented in number of catches per trap nights (n(nights)=3). Grimsö Wildlife Research Station (2026). Small rodent dynamics from Grimsö Research Area, 1973-05-01–2025-09-30 [Data set]. Swedish Infrastructure for Ecosystem Science (SITES). https://hdl.handle.net/11676.1/fAeqC15DofyVljcxaEnVVQb- Tue, 27 Jan 2026 00:00:00 GMT https://researchdata.se/en/catalogue/dataset/sites-faeqc15dofyvljcxaenvvqb- https://researchdata.se/en/catalogue/dataset/sites-faeqc15dofyvljcxaenvvqb- Swedish University of Agricultural Sciences Inventory on red fox (Vulpes vulpes) reproduction. Approximately 190-220* dens are observed each year (May-June) for reproduction (=confirmed activity and litter) over the Grimsö Research Area; *number of dens varies between years due to destruction of dens by forestry or discovery of new dens. Grimsö Wildlife Research Station (2026). Fox reproduction from Grimsö Research Area, 1973–2025 [Data set]. Swedish Infrastructure for Ecosystem Science (SITES). https://hdl.handle.net/11676.1/f_1j7spOoLHEKPmPqcowN0qq Thu, 22 Jan 2026 00:00:00 GMT https://researchdata.se/en/catalogue/dataset/sites-f-1j7spoolhekpmpqcown0qq https://researchdata.se/en/catalogue/dataset/sites-f-1j7spoolhekpmpqcown0qq Swedish University of Agricultural Sciences The SLU long-term agricultural field experiments are a nationwide research infrastructure consisting of experiments in hydrological management, tillage, landscape ecology, plant nutrition, weed biology and control, cropping systems, and cropping systems in northern Sweden. They are used to study how crop rotations and cultivation measures in agriculture affect soil properties and crop yields in the long term, and the effect of weather and climate on the efficacy of these treatments. The experimental sites and the data collected in the long-term experiments are a valuable resource for research, teaching and consulting. The experiments are open for those who want to use data already collected or who want to do their own sampling. All long-term experiments are funded by the NJ faculty and administered by an academic department, with the activities coordinated by a committee.  Twenty-four long-term field experiments in plant nutrition and soil fertility are currently managed by the Department of Soil and Environment at the Swedish University of Agricultural Sciences. These experiments, starting as early as 1936 or as recently as 2010, are grouped into eight different experimental series that focus on themes such as agronomically relevant factors including liming, long-term soil fertility, soil organic matter and soil biology. Plant and soil samples have been collected, measured for standard parameters, and archived since the start of the experiments, forming the basis of over 200 theses and papers across a broad range of disciplines. The soil organic matter in a cereal-only cropping system experimental series (also called "the humic balance trials") R3-0020 was established at four locations between 1970 and 1980. These experiments were designed to examine the impact of continuous cereal cropping on soil organic matter content. The design also tested the effects of nitrogen fertilization and of removing versus leaving straw in the field. This experimental series is connected to R3-0021 (soil organic matter in a ley-only cropping system), which includes four experiments at the same locations as R3-0020. The data collection includes yield, crop and soil data from the four currently active experiments from the year 1971 to 2023. Yield and crop data has been collected every year, and soil data has been collected at regular intervals depending on time period and location. The data has been checked for obvious outliers or faulty values, but caution is advised since this collection spans many years and has been collected and compiled by different people during this period. Please contact soilnutrientcycling@slu.se if there are any questions regarding the data, or regarding the design and management of the long-term experiments. Links to metadata records in the GLTEN (Global Long-Term Agricultural Experiment Network) platform are provided under Relations. Tue, 20 Jan 2026 09:50:08 GMT https://researchdata.se/en/catalogue/dataset/2025-209 https://researchdata.se/en/catalogue/dataset/2025-209 Swedish University of Agricultural Sciences This repository contains the data and scripts underlining the article Vico et al. "Functionally rich crop rotations increase calorie and macronutrient outputs across Europe", Nature Food, 2026. For further information see the publication, https://www.nature.com/natfood/. We used data of calorie and macronutrient (carbohydrate, protein, and fat) outputs from 16 long term experiments in Europe to ascertain how they are affected by crop rotational diversity, as measured by functional richness. This repository includes a core dataset (macronutrients_wholerot.csv), comprising whole rotation calorie and macronutrient outputs for each year, rotation, replicate/other treatment for 13 of the 16 sites used in the analyses. We do not have permission to share data at a similar level of detail for the remaining three sites: for these, we provide whole rotation calorie and macronutrient outputs for each year and rotation, averaged over the different replicates/other treatments, along with the standard deviation and number of observations included in the averaging (macronutreints_wholerotaggr.csv). Information on the experiment location, period covered, rotations included and other treatments is available Table S1 in the Supplementary Information to Vico et al. Calorie and macronutrient outputs for each year are the sum of those provided by all the crops in the rotation, weighed based on the rotation length. In other words, these calorie and macronutrient outputs are those produced by a one ha farm, where all the crops in the rotation are grown on areas proportional to their frequency in the rotation. For each crop, we selected a common retail product (e.g., flour for each cereal) and used its nutritional value to transform the observed marketable yield into calorie and macronutrient outputs. We considered three scenarios of use for forage crops - for milk, beef or biofuel production. As a result, the dataset contains information on the site (name, code) and, for each year, group and rotation, information on the rotation (sequence of crops, functional richness, inclusion of cereals, legumes, leys and/or broadleaves, fertilization regime), and outputs in calories (Gcal/ha/yr) and macronutrients (carbohydrates, proteins, fats; kg/ha/yr) when forage crops are used for milk (M), beef (B) or biofuel (F) production. Primary crop yield data can be made available upon reasonable requests and for specific purposes. We include also the R code for analyzing the calorie and macronutrient outputs for each year, rotation and replicate/other treatment and produce the results incorporated in the article. Mon, 01 Dec 2025 13:37:12 GMT https://researchdata.se/en/catalogue/dataset/2025-225 https://researchdata.se/en/catalogue/dataset/2025-225 Swedish University of Agricultural Sciences Giulia Vico Inventory (data set) of Marine Citizen Science Intiatives collected and described in the publication entitled "Past and present marine citizen science around the globe: a cumulative inventory of initiatives and data produced". AMBIO (Vol. 54, Issue 6, pp. 994–1009). https://doi.org/10.1007/s13280-024-02119-z The metadata at SND/DORIS includes geographical coverage, but mostly only to the level of country/territory. Wed, 15 Oct 2025 09:03:15 GMT https://researchdata.se/en/catalogue/dataset/2025-271 https://researchdata.se/en/catalogue/dataset/2025-271 IHE Delft Institute for Water Education Uta Wehn Ane Bilbao Luke Somerwill Torsten Linders Joan Maso Stephen Parkinson Christina Semasingha Sasha Woods