The aim of this study has been to investigate teachers´ teaching of name geography and based on this contribute with discussion that can develop the didactics of geography. The subject of geography has been debated in the discourse of the school for a long time. To examine the aim of the study interviews have been conducted with six teachers from different schools who are competent in the subject of geography. The material from the interviews has been transcribed, analyzed and then a result has been written. The result provides that the teachers use different methods current to the students' learning. The teachers have a common denominator for the purpose of their teaching, namely, to provide a basis for the students for further development in the subject of geography. Our conclusion is that teachers express their didactic choices and dedicate name geography in different ways and there is a need for further research to develop teachers' awareness about their didactic choices of name geography.

The aim of this thesis is to investigate immigrant youths’ experiences of accessibility of urban greenspaces (UGS) and how these spaces meet the needs and preferences of this user group. The case study takes on an explorative approach based on interviews and participant observations. Environmental justice and sense of place theory constitute the research framework and permeate the study from research design throughout to the conslusions. Environmental justice theory has been applied earlier in studies of accessibility of UGS among different social groups, mostly on issues of environmental bads. However, no previous research has treated these issues in combination with a sense of place framework. This study contributes to the UGS accessibility research by illuminating the subjective experiences of the urban nature in familiar environments. The results from this study depict how factors other than the physical presence of UGS - such as social networks for local knowledge, previous nature images and feelings of familiarity with the surroundings - affect the perception of how well UGS meet one’s need and desiers.

No description available.

Climate types, biome types, and soil orders are commonly used among physical geographers in research and to describe natural environmental characteristics. However, little attempt has been made to quantify the percentage of global land surface that is covered by combinations of climate types, biomes, and soil orders. This research overlays a world map of 31 climate types produced based on the Köppen-Geiger criteria using gridded NCAR/NCEP reanalysis monthly mean surface air temperature and precipitation data from 1981 to 2010 with global maps of eight biomes adapted from World Wildlife Federation and 12 soil orders from United States Natural Resources Conservation Service. Areas covered by each of the 2976 combinations are then calculated. Results suggest that, as expected, a few climate/biome/soil combinations are most common, such as desert climate/desert biome/entisols, tundra climate/tundra biome/gelisols, and desert climate/desert biome/aridisols. The local nature of soil properties causes small enclaves of unexpected combinations of climate, biome, and soils, and the 10 most extensive climate/biome/soil combinations occupy only one-quarter of the global land surface. The strong correspondence between climate and biome types validates the Köppen-Geiger criteria for categorizing climates based on vegetation realms, even today, despite the general paucity of data available when the criteria were established.

Skred är en av de naturliga processer som formar landskapet omkring oss. De kan dock, om de sker ibebyggda områden, orsaka stor skada på byggnader, infrastruktur och utgöra en fara för människors liv.Det är därför viktigt att kunna identifiera områden där skred potentiellt kan ske så att lämpliga åtgärderkan vidtas i tid. En modell har tagits fram av Statens geotekniska institut (SGI) och Sveriges geologiskaundersökning (SGU) för att ge en första indikation på var skred kan ske. Modellen baseras på en algoritmav Tryggvason et al. (2015) där områden som består av finkorniga jordarter och där lutningsförhållandetär minst 1:10 betraktas som skredkänsliga. Syftet med denna studie var att undersöka till vilken gradmodellens aktsamhetsområden sammanfaller med tidigare skred från SGI och SGUs databaser. 90 - 94% av de tidigare skreden överlappade med modellerade aktsamhetsområden. Möjliga anledningar till attskred hamnat utanför dessa områden undersöktes även. Att de befinner sig i en jordart som inte betraktassom skredkänslig och att lutningen numera är lägre än tröskelvärdet för modellen var de huvudsakligaanledningarna till detta. / A landslide is a type of mass movement down a slope. It is a natural part of the evolution of the landscapearound us but can cause extensive damages on buildings, infrastructure and pose a threat to human livesif they occur in populated areas. It is therefore important to know which areas that are prone to landslidesso that appropriate measures can be taken in time. It is possible to calculate how stable a certain soil isby taking samples of it and testing it in the lab. In these tests it is determined how sensitive the soil is tovibrations, a higher water content and/or if it is remolded. However, this takes time and require a lot ofwork. Since not all soil types are equally sensitive these tests do not have to be performed on everyslope, but it is important that the most sensitive areas are not overlooked. For this reason, a model hasbeen developed that displays areas where the slope stability might need to be examined prior, forexample, larger infrastructure projects are started. From previous studies it has been found thatlandslides mostly occur in fine grained soils, like silt and clay, and where the slope is steeper than 5.7degrees. Areas that consist of any of these soil types and has a slope over this threshold are consideredpotentially sensitive to landslides in the model. The purpose of this study was to assess how well themodel is at identifying areas that might be prone to landslides. This was done by determining how manyof previous landslides, that are registered in two databases, that fall within the areas marked aspotentially sensitive. Why some landslides were located outside of these areas was also examined. Themain reasons were that the soil type the landslide occurred in is not considered sensitive by the modelor the inclination of the slope have changed since the landslide occurred. 90 - 94 % of the previouslandslides were found to be located within areas that the model point out as potentially sensitive.

The main focus of this thesis has been to study how formal territorialization can be expressed in the study area and to study the consequences of what those territorializing processes may have in the urban green commons in the study area. The overall focus for this thesis has been the issue of territorialization and its consequences in terms of formal land claims in urban green commons when it is planned and proposed for by large-scale land use planning. Based on a case study together with field studies, literature studies, interviews and map data, the results of this thesis have highlighted the potential consequences of the city of Stockholm’s proposed land use plans in the thesis study area with formal land claims on land that today is classified, according to this thesis’s assessment, as widely appreciated the area’s residents and important urban green commons. The city of Stockholm, with it’s plans and proposals in the ”Program proposal for Spångadalen”, formally makes a territorializing claim on land that is found to be within the city's ownership, but which are also important urban green commons for the people who live in connection with them and also important for the area's flora and fauna. Three of the four sub-areas, (within the main study area), are considered sensitive to changes in the use of the land. The city's land within the study area is urban green commons with parts of it that have high nature values, are appreciated green areas among the areas residents and house habitats for endangered flora and fauna. This means that further work with regular and well-planned monitoring of the city’s urban green commons is needed in order to follow potential changes in the state of these urban green commons over time and to insert the right measures, at appropriate times and in the right places, in order for the city to successfully reach it’s sustainability goals set in the city’s Municipal Comprehensive Plan, (”översiktsplan” in Swedish).

No description available.

Mercury (Hg) in rivers and streams of the Mackenzie River Basin (MRB) presents a risk to fish, aquatic mammals, and humans. This thesis makes use of newly-released water quality data, including total mercury (THg) and dissolved mercury (DHg), gathered through the NWT-Wide Community-based Water Quality Monitoring (CBM) program. Landscape metrics extracted from geospatial datasets (e.g. vegetation type cover and ground ice presence), along with the water quality parameters were transformed, as needed, and then assessed for relationships with Hg concentration in rivers using principle component analysis, correlation and linear regression. Transformed turbidity, total phosphate, total sulfate, and the 1st principle component representing total metals were positively correlated with log10 THg and log10 particulate Hg (PHg) (p < 0.05) in major tributaries on the MRB. Major tributaries had a greater proportion of THg as PHg. Dissolved organic carbon and total organic carbon were positivity correlated to log10 DHg in minor tributaries (p < 0.05) of the MRB. Logit-transformed ground ice presence was positively correlated with median log10 PHg and log10 THg (PHg; p < 0.05, THg; p < 0.05). Median log10 DHg was positively correlated with logit-transformed landcover metric mixed forest (R2 = 0.67), and negativity correlated with logit-transformed landcover metric sub-polar taiga needleleaf forest (R2 = 0.64) (p < 0.05). This suggests suspended particles, derived potentially from suspended mineral matter, kerogens, and/ or weathering of sulfides could be a control on PHg in major tributaries of the MRB, while thicker, organic soils, potentially in forested areas, releasing TOC and DOC, could control export of DHg to minor tributaries in the MRB.

Tephrochronology is a powerful tool to correlate and improve the chronology of sedimentaryarchives in the Arctic Ocean. The Aniakchak Caldera Forming Eruption (CFE) in Alaska at3.6 cal kyr BP ejected ash that were found in a widespread layer in Alaska, and as cryptotephrain the Chukchi Sea, Newfoundland, and Greenland. This study presents data from the coreSWERUS-L2-4-PC1 (4PC) taken at a water depth of 120 m in the Chukchi Sea. The sharp peakin tephra shards concentration permitted to clearly place the isochron. Unfortunately, the microprobeanalyses were unsuccessful, however measurements of trace elements were performedwith Laser Ablated-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS). The geochemicalsignature of the Aniakchak 3.6 eruption was ensured with significant trace elementratios. The isochron of the eruption combined with the radiocarbon dates from 4PC permittedto calculate the local marine radiocarbon reservoir age offset DR=36446 years. This value isrelatively low compared to recent estimates in the Chukchi Sea, especially to the neighbouringcore SWERUS-L2-2-PC1 were DR=47760. The DR value of this study is explained by theinfluence of the "young" Atlantic water mixing with the "old" Pacific water at the depth wherethe core was taken.

No description available.