Cannibalism can have major influence on fish population dynamics. A prerequisite for cannibalism is that the cannibal and the potential victim meet, and besides density effects, the encounter rate between cannibals and their victims is therefore also largely dependent on habitat use and habitat heterogeneity. In this study I quantified and compared the potential for cannibalism in stream-dwelling European grayling populations in three rivers in Jämtland by means of habitat classifications. I also analyzed population dynamic consequences of varying the potential for cannibalism in terms of intensity, using a physiological structured population model. Findings based on habitat characteristics were that the potential for cannibalism is in general not favourable in these types of streams.

The purpose of this investigation is to examine the extent to which Swedish compulsory school tends to rely upon, and to further reinforce, ideologies that from a theoretical platform of deep ecology can be identified as ?ecologically unsustainable conceptions of reality?. Mainly, this will purport to an examination of the (explicit as well as implicit) prevalence of anthropocenthrism, individualism, ethnocenthrism and rationalism in a) the Swedish National Curriculum; and in b) biology text books. Methodologically, the study makes use of Fairclough´s approach to, and method for, critical discourse analysis (CDA). The main results are that the National Curriculum indeed expresses a high level of individualism, as well as (although to a lesser extent) traces of rationalism and ethnocenthrism.

In the Western world the interest in science in schools is steadily declining. Focusing on interest is important to encourage students to lifelong learning which is a written purpose of the Swedish curriculum. This literature study examines if biology education outside in nature could be a part of the solution for this problem and the question of issue is how can education outdoor enhance students? interest for biology and what other aspects does this effect simultaneously? The method of block search was selected for addressing this question, utilizing the ERIC and ERC databases. The results show that situational interest increased with outside education due to aspects such as: novelty, hands-on, knowledge acquisition and social interaction.

Pulsatilla vernalis is one of several endangered plant species that benefit from wildfires and small scale disturbance events that repel competing vegetation and create open patches in the vegetation cover. Previous studies argue that Pulsatilla vernalis is decreasing in numbers due to vegetation changes associated with the decrease in wildfires, forest grazing and changes in forest management. In this study, 17 populations of P. vernalis were inventoried in order to examine if soil and/or vegetation structures affect the population structure of P. vernalis (i.e.

The aim of the study was to look at the differences in groups in Karlskrona Kommun in comparison to a larger population of work-groups in Sweden. The instrument used was the Team Diagnostic Survey developed by Ruth Wageman, J. Richard Hackman and Erin Lehman (2005) in order to diagnose the strengths and weaknesses in work-groups, as well as explore the group?s behaviours and effectiveness. The results show that there was a significant difference between the Karlskrona Kommun groups and the larger population of Swedish groups in the following areas: stable, clarity, challenge, diversity, whole task, resources and availability..

Cardiac arrhythmias and heart diseases can result in a limited performance capacity which could lead to anxiety and depression. Objective: The aim of this study was to investigate the prevalence of symptoms of depression among patients with cardiac arrhythmias. The intention was also to explore differences between men and women in the occurrence of symptoms of depression. Furthermore, the prevalence of symptoms of depression among patients with cardiac arrhythmias was compared with a Swedish general population. Method: For two weeks MADRS-S, a self-rating scale for depression, were distributed at a medicine ward where patients with cardiac arrhythmias are treated, at a hospital in Sweden.

The aim of the study was to look at the differences in groups in Karlskrona Kommun in comparison to a larger population of work-groups in Sweden. The instrument used was the Team Diagnostic Survey developed by Ruth Wageman, J. Richard Hackman and Erin Lehman (2005) in order to diagnose the strengths and weaknesses in work-groups, as well as explore the group?s behaviours and effectiveness. The results show that there was a significant difference between the Karlskrona Kommun groups and the larger population of Swedish groups in the following areas: stable, clarity, challenge, diversity, whole task, resources and availability..

Objective: The aim of this study was to study the prevalence of depression among patients with arrhythmia, and to investigate if there was any gender difference in the study population regarding depression. Furthermore, differences considering depressive symptoms between patients with arrhythmia and the general population were to be investigated. Method: The self-rating scale MADRS-S was distributed during two weeks to 24 patients with arrhythmia. Twenty-one patients completed the study. Results: 28.5 % of the participants showed symptoms of some level of depression.

Studies show that the interest and knowledge about science among teenagers is decreasing. They also reveal the difficulties to explain the ecological processes and that the ideas about the nature are collected from everyday life and early school years.The intention of this investigation was to find out more about children?s ideas and knowledge about the ecological processes and to compare these results with the curriculum.The method was a questionnaire and interviews with children in school year 1 ? 6. The aim of the studies was also to find out if any progress connected to age could be found, concerning understanding of the ecological processes.The results showed difficulties in achieving the predestined goals for biology and chemistry concerning ecology cycles and they differed a lot between the children. Often the learning process showed very little progress.

Participation as Pedagogy ? Imagined Race and the Exhibit of Swedish Peoples-Types.This essay will analyse and give a deeper picture of the ?The Exhibit of Swedish People-Types? by focusing on the pedagogical ideals that formed the exhibit as an participatory media. The exhibit was led by the famous race-biologist Herman Lundborg and toured Sweden in 1919 displaying the racial constitution of the Swedish population using material gathered by the public itself. The exhibit has been described as an important tool in popularising eugenics in Swedish society during the early 20th century with the ambition of gaining funds to create the first race-biological institute and to influence policy-making. Nevertheless there has not been a single study which has focused solely on the exhibit and how the pedagogical ideals that permeated it affected the relation between the public and the media itself nor the political implications of this relation.

I have done a follow up study of the restoration of two rivers, Röälven and Grundan, in order to evaluate the effects of the restoration on the endemic population of trout. Both rivers have been used for timber floating during many years throughout the 20th century, and because of this, had all obstacles such as rocks and wood parts removed. In 2004-2005 both rivers were restored, and rocks and wood were put back into the rivers. Spawning grounds were created and boulder dams were constructed to promote the streaming water. The result showed that the trout population of both rivers increased after the restoration, but also that the trout population of Röälven increased more than that of Grundan.

The daily travel, and especially travel between home and work i.e. commuting, is increasing every passing year. More than 90 000 people commute from their home municipality to work in Gothenburg. One of the aims of the regions of Västra Götaland and Halland is to interconnect municipalities and towns within the region, thereby creating growth, faster freight and passenger transports as well as a more attractive business climate. However, while the goal is to create growth, there are several municipalities in the study region with negative ongoing trends.

Det finns lärare som planerar sin undervisning utan att undersöka hur effektiv den är i att komma till rätta med studenternas missuppfattningar. En lärare som vet vilka missuppfattningar som är vanliga och leder till felaktiga svar tror jag har större möjlighet att utforma undervisningen på ett sätt som får eleverna att göra sig av med sina missuppfattningar och därmed svara rätt. Syftet med detta examensarbete var att undersöka hur gymnasieelever i början av tredje årskursen på det naturvetenskapliga programmet uppfattar biologiska begrepp. Verktyget som användes för att undersöka elevernas begreppsuppfattning var Biology Concept Inventory (BCI). Testet besvarades av 66 svenska gymnasieelever i sista året på det naturvetenskapliga programmet.

The population of Grey Partridge is decreasing worldwide as a result of anthropogenic activities. Increased agricultural production, requiring homogenous farming landscapes and increased use of pesticides are believed to be the main factor causing population declines in the Grey Partridge. Actions to enhance Grey Partridge populations are available; however, those actions are vain if the acceptance to conduct them is low. To gather information about acceptance among farmers, hunters and the County Administrative Board towards 18 available actions enhancing the Grey Partridge population, nine face-to face interviews were conducted as an exploratory case study. The results showed that willingness to conduct enhancing actions differ between and within the groups of stakeholders.

The aim: To examinate depressive symptoms among heart failure patients. Another aim was to examinate the differences in depressive symptoms between gender and between heart failure patients and the population. METHOD: The self-assassment formula MADRS was answered by twenty patients with heart failure at the University hospital in Uppsala. MAIN RESULT: Among the participants 31,3 % showed diffrent levels of depressive symptoms. Mild depression was more common in women.