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910 Uppsatser om Species conservation - Sida 35 av 61
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Through wing pattern, posture and movement, a harmless moth of the family Brenthia imitates an eight-eyed jumping spider. When an octopus of the species Thaumoctopus mimicus sense danger it can alter its appearance to that of a venomous sea snake. They are both drawing attention to themselves. Nevertheless, and because of this, they are protected. The mechanism is called mimicry.
Spaljerade frukttr?d, en outnyttjad resurs f?r hemtr?dg?rden? En intervjustudie av tr?dg?rdsm?stares erfarenheter och syn p? hantverket spaljering.
This bachelor's thesis is a study of operative approach and attitude to espaliered
fruit trees in home gardens. Through qualitative interviews the informants give their view of
problems which might arise, and to some extent how the problems can be solved. In
addition, which benefit can be obtained from growing these different types of trained trees
and for whom they might be suitable. Thematic analyses were used to find themes and
patterns for deeper understanding. The conclusion was that these kinds of trees would be
beneficial to use to a greater extent than is done today you can use more species and
varieties, fit more trees in a small garden, and enhance the trees esthetical appearance.
Evaluation of a method for determinationof glutathionereductase activity inerythrocytes
Glutathione (GSH) is a molecule that consists of three amino acids: glutamic acid, cysteine and glycine. GSH has several important functions: to protect cells from free radicals, reactive oxygen species and oxidative stress. GSH exists in a reduced form, GSH, and in an oxidized dimeric form, glutationdisulfid, GSSG. The enzymes glutathionereductase (GR) catalyses the reduction of GSSG back to GSH. Nicotinamide adenine dinucleotide phosphate (NADPH) is required as a coenzyme in the reaction.
Ur lobbyistens synvinkel : Svenska miljölobbyisters syn på demokratisk representation och EU: s politiska system
The activity of interest groups in the political process of the European Union has given rise to a broad debate concerning the effect on European democracy these groups have. As relatively powerful political actors, the question of these groups? views on the EU and how the union should be is an important one. The status of these groups owns democratic representation also affects the democratic status of the EU. Being based on a number of theories, this study adopts an ideology analysis for the purpose of testing these theories on two cases ? the Swedish environmental organizations World Wide Fund for Nature and The Swedish Society for Nature Conservation.
OLJEKRISEN 1973 - En studie i politisk ekonomi kring förlopp och effekter i Sverige och Danmark
ABSTRACTThis thesis focuses on the OPEC oil crisis of 1973 and its impact on the Scandinavian countries of Sweden and Denmark. Starting from Walter Carlsnaes theory of energy vulnerability, the concepts of vulnerability and national security are tested on the selected cases and an array of policy alternatives are assessed. Posited available options like oil stockpiling, conservation, renewable energy and international coordination are evaluated as means for ameliorating the vulnerability of the nations. The theory chosen is further expounded with a consensus element to reinforce its explanatory power. The thesis utilizes a wide range of material from parliamentary records to daily newspapers in an attempt to shed some light on the interplay between economics and politics.Sweden and Denmark evince diverging developments despite their common starting point with exceptionally high oil dependencies and can be located on different ends of the energy policy gamut.
Modeller för brösthöjdsålder för tall och gran :
The purpose of this study was to develop two types of prediction models for Scots Pine
and Norway Spruce. The first type for calculation of the stump diameter under bark the
year the tree reached breast height (Dstubh130). The second type for calculation of the
annual difference, e.g. the number of growth years between stump height (0.2 m) and
breast height (1.3 meters above ground level). The primary thought with these prediction
models is to obtain the breast height age in the trees on basis of the number of annual
rings at stump.
Det splittrade subjektet : En analys av Marx filosofiska grund genom Kritiken av Hegels Rättsfilosofi
In the Philosophy of Right Hegel develops the concept Sittlichkeit (Ethical life) that represents Hegel´s view of how the State should be constituted. In Critique of Hegel?s ´Philosophy of Right` Marx provides a critical so called ?Prussian? reading of Hegel as ultimately a defense for the Prussian empire of that time. The study focuses on a close reading of the chapter on the state, which includes the paragraphs 257-313 in the Philosophy of Right. It examines how Marx?s philosophy developed from this Criticism including some of his basic concepts, notably Gemeinwesen and Gattungswesen, that he takes over from Hegel and includes in his own theories of human alienation.
Fåglar i urbana miljöer : kvaliteten på urbana habitat och om beståndstäthet är ett bra mått på habitatkvalitet
The urbanization of the world is increasing. How it affects bird populations have been well studied during the last decade, and comparisons between urban and non-urban habitats have been carried out. A common method for measuring habitat quality is to calculate the population density. This method is easy to use, but have been criticized during the last couple of years. In this study, data of population densities was compared with data on reproduction success.
Empathy, altruism and the African elephant
The quest to determine if non-human animals have emotional lives similar to man goes a long way back and is yet to result in a clear answer. The aim of this particular literature study is to determine whether or not the African elephant may host feelings of empathy and display altruistic behaviour. In search for an answer to this question, scientists have chosen to first evaluate the cognitive abilities of said species. They have done this through the testing of tool use, mirror self-recognition, memory and the ability to coordinate with another when performing a task etc. It is generally thought, that in order for complex emotion to exist within an individual, cognition, as an awareness of the self and others, must first be present.
Kvalitetsbegreppet i äldreomsorgen : En idé som speglar samhället
The purpose of this study was to understand how the concept of quality as an idea was spread to and translated in municipal elderly care. A central question was: How does literature, policy documents and key people describe the function and meaning of the concept of quality? The method of analysis was a qualitative case study with a critical discourse. The theoretical framework of the study is mainly what is known as institutional theory and a line of thought describing how ideas are transferred and spread. The theoretical focus is on how original ideas are interpreted and why they gain a foothold in new contexts.
Vinster med björkinblandning i granbestånd i syfte att höja markens pH-värde
The soil acidification and the pH-value of the soil have been discussed for many years. Many observations of the tree species effects on the soil pH have been done.
We have discussed the effects on the soil surface pH-value with a birch (Betula spp. L.) admixture in Norway spruce stands (Picea abies L.).We have used data from the Swedish National Forest Inventory. We have also discussed how the wood production and the biodiversity can be increased in mixed stands, in according to the Swedish forestry act Skogsvårdslagen. Our sampling areas are located in Norrland, Sweden.
The results show a significant correlation between an increased birch admixture and an increased pH-value of the soil.
Vad vet gymnasieelever om betygskriterierna och kursplanen i Idrott och Hälsa?
The Scanian woodfences has been determined by two mainly elements: Scania's composition of tree species, with a large element of deciduous forest, and the local building tradition which has more in common with the European continent than the Swedish tradition. By examining responses from ethnological question lists deriving from the first half of the 1900s, combined with literature studies, I have been able to deepen and broaden the knowledge behind the various fencing design. In addition I ?ve constructed maps which could illustrate their historical geographic distribution.I have come to the conclusion that there was three main types of woodfences that was most common until the barbed wire was introduced in the early 1900s and later on replaced the elderly woodfences. Common for the three main types is that the base material was made out of Juniperus communis, this largely because of its durability against rot.
Nyttjande av det digitaliserade stickvägsnätet vid skogsgödsling med traktor
Forest fertilization had its peak in the late 60´s, when almost 200 000 ha was fertilized annually. The silviculture of today has high demands for timber production at the same time as the demand for nature conservation increases. It means that it?s necessary to produce more volume in smaller areas in the future. The use of DGPS equipment has in modern forestry in Sweden become more and more common.
En inventering av hälsoläget hos amerikansk bison (Bison bison bison) : i svenska besättningar
American bison (Bison bison bison) is a new species in Sweden and was
introduced in the year 2000. In this study the result of an interview and a field
investigation is presented. The aim was to investigate the health and parasite
status in Swedish bison herds. The most common reason to begin with bison
breeding was meat production and/or sale of breeding animals and tourism. The
Swedish breeder?s experience of bison is that they in general are healthy.
Pilotprojekt Drevfjällen, vägen till en hållbar regional utveckling?
This study is based on a case study of Pilotprojekt Drevfjällen, a project whose ambition is tofind ways to secure nature conservation in a local context. This is promoted at governmentlevel, which says that a local connection is needed to achieve sustainable regionaldevelopment. The study, based on a theoretical background of the concept of governance,intends to evaluate whether Pilotprojekt Drevfjällen can contribute to a sustainable regionaldevelopment.This study is based on meeting documentations, semi-structured interviews with variousstakeholders in the project, field studies and participant observation at an informativemeeting. The region of interest, north Dalarna, was visited twice to obtain the specificconditions that Pilotprojekt Drevfjällen have. The interviews revealed positive attitude to theincreased dialogue and cooperation that Pilotprojekt Drevfjällen has meant for theparticipants.