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623 Uppsatser om Habitat mapping - Sida 22 av 42
Fysiska strukturer i Umeälvens gamla älvfåra och dess inverkan på laxsmoltens utvandringsframgång
The survival of hatchery reared smolts is generally low after release. To get a better understanding of what variables affecting migration success, Atlantic salmon smolts were studied during their out-migration in the old river channel in the lower part of river Umeälven. The area consists of shifting habitat and complex structures which causes difficulties for smolt on their migration out to sea. The aim of this study was to try to determine the effects of feed restriction, fin conditions and different physical barriers in the river, on the migratory behavior of Atlantic salmon smolts in the river Umeälven.
The river was divided into six different sections using acoustic receivers strategically deployed along the river. Two-year old hatchery-reared smolts (n=150), in three different weight classes, were tagged with acoustic transmitters.
Analoga möten i en digital tid - En kartläggning av Socialdemokraternas och Moderaternas dörrknackningskampanjer under 2014
2014 is a special year in Sweden: for the first time elections to the European parliament and the national elections coincides, creating a"Super election year". This year has also seen the rebirth of an old way of campaigning: door-to-door canvassing. For the first time in 50 years the two biggest political parties, the Social Democrats and the Moderate Party, have decided to create a campaign based on personal meetings with the voters in their own home. To investigate this old-new way of campaigning, this study presents an overview of the history of door-to-door canvassing in Sweden and the research in political marketing associated with the phenomena. Based on that, a new model is constructed to help analyze and map the Swedish canvassing-campaigns.
Uppföljningsarbetet av efterkalkyler på Portsystem 2000 AB
This thesis is carried out at Portsystem 2000 AB who manufactures and markets industrial doors and docking systems. The background to this thesis is that the company?s management considers that their follow-up process of cost accounts is not fully functioning.The aim with this report is to investigate and describe the present procedure of the follow-up process concerning the time of operations and come up with suggestions for improvements. This thesis is performed within the range of the following areas: Information systems, quality, processes and cost calculation. The main method we used were semi structured interviews with a fairly opened framework.
Individuell tillväxt och substratval hos en lokalt differentierad population av Asellus aquaticus
Local differentiation may occur during a short period of time and is part of the formation of new species. The isopod Asellus aquaticus is an example of a species in which local adaptation has occurred during a short period of time. An establishment of stonewort (Chara spp.) vegetation in Lake Tåkern (in the 2000) resulted in two different Asellus ecotypes; a lighter pigmented, smaller one that lives among stoneworts grazing periphytic algae, and a darker, larger ecotype that feeds on decaying leaves in reed (Phragmites australis vegetation. The purpose of this study was to examine whether there are differences in growth between ecotypes, depending on whether the food was periphytic algae or leaves, and to study the choice of substrates between the two food types. For the study, animals from both habitats were brought in from Lake Tåkern to the laboratory.
Häckar för Smålands inland : en översikt
Häcken är ofta ett självklart och naturligt element i en trädgård. Som trädgårds-ingenjör kan det vara svårt att välja en lämplig häck till ett gestaltningsförslag. Det krävs att vi tar hänsyn till flera parametrar, både för att häcken ska trivas men också för att kunden ska bli nöjd. Det kan därför ta mycket tid att leta upp en häck som uppfyller alla krav och önskemål som finns, tid man oftast inte har.
Syftet med det här arbetet är att studera lämpliga arter för häckar till villaträdgårdar i
det småländska inlandet. Arbetet har gjorts med hjälp av litteraturstudier samt
intervjuer med plantskolor.
Betal- och biljettsystem i kollektivtrafik : en kartläggning av aktörer och roller
An Interoperable Fare Management system for public transport has been a struggle for the actors in industry of public transport. A lot of effort has been put into creating a smart card solution that enables the travellers to use the same card for paying and holding the ticket regardless geographical position in Sweden. That project has failed, mostly due to a lack of taking non-technical actors and aspects into consideration during the project process. This thesis highlights the major actors and their responsibilities. The ARKTRANS framework is used as analytical tool to identify different roles. Throughout the thesis a sociotechnical perspective is used. The developed method in this thesis is suitable for mapping of actors and responsibilities in a network surrounding a complex technical system.
En jämförande studie av JDBC och Hibernate med avseende på användbarhet
Två grundläggande paradigm inom datavetenskap är objektorienterad programmering och relationsdatabasteknik. En kombinering av applikationer gjorda i ett objektorienterat programmeringsspråk med den beständighet och funktionalitet som ges av relationsdatabaser är en möjlig vidareutveckling av ens kunskaper inom dessa områden. Kombinationen av dessa båda förutnämnda paradigm innebär åtminstone ett problem som uppkommer då en relationsdatabas lagrar data i tabeller och en objektorienterad applikation lagrar data i objekt. Detta problem kallas objekt/relations paradigmens missanpassning. På grund av detta problem så måste kopplingen mellan paradigmen skötas av ett ramverk av något slag.
Planering av design och skötsel i ett fragmenterat naturreservat
Rävsta naturreservat omfattar ett fragmenterat landskap som är mycket variationsrikt. När en skötselplan ska upprättas i ett sådant område är det viktigt att se till de hot som frag-menteringen medför som till exempel: för små habitat med för liten tillgång till resurser, avklippta spridningsvägar och kanteffekter. En ny skötselplan ska upprättas för reservatet under 2010 och det här arbetet syftar till att föreslå en modell som inriktar sig på att mot-verka de negativa effekterna som fragmentering har på den biologiska mångfalden. För att hitta de naturvärden som finns i området i nuläget har inventeringsdata från olika källor gåtts igenom. Data på arter som antingen är rödlistade eller indikerar höga naturvärden sammanställdes i olika grupper beroende på vilken naturtyp de är knutna till.
Handbok för växtinsamlare : med erfarenheter från sex nutida svenska experter
What makes a Swede betake himself into the Chinese wilderness? How does the Rio Convention influence a plant collector? And who will crack the nut positioned 12 meters up in the crown of a tree? There are many secrets behind the act of collecting plants.
In many regards, the documentation of the collection of plants for a Swedish purpose has been unsatisfactory. The focus of the publications is on what plant species that have been found rather than information on how these plants have been collected. Only few results of experimental cultivation are available. There is no doubt that there exists knowledge that has not been publicised yet.
Beteenden hos geparder i två stora svenska djurparker
Cheetahs in the wild are declining due to hunting, lack of prey, exploitation of habitats and loss of cubs to predators. Those are the main reasons to why cheetahs are kept in captivity today for conservation. Many cheetahs kept in captivity are seen pacing ? a behaviour that arise when the animal is prohibited from performing natural behaviours. It is believed to being attributed to a lack of stimulation in the environment where they are being held.
Det postkoloniala resandet i Egypten : En diskursanalys av resebroschyrer
During the colonial period Europeans travelled to Egypt. The French had explored Egypt through the mapping and this was published in a collection of books called Déscription de l?Égypte. Exhibitions and publications like Déscription de l?Égypte, which aimed at giving a view of Egypt, raised public interest for journeys to the Orient.
Hägnutnyttjande hos Skansens lodjur (Lynx lynx)
Djurparker är idag stora attraktionsmoment samt arbetar också med bevarandearbeten. För att lyckas med ett bevarandeprojekt krävs det att djuren bibehåller sitt artspecifika beteende även i fångeskap vilket kräver ett bra hägn med tydliga mål. Det europeiska lodjuret är ett relativt populärt djur i djurparker i denna del av världen, och är än så länge inte hotade. Dock gör minskade habitat, avskjutning samt förändringar i bytestillgång att lodjurspopulationen minskar. På Skansen hålls två lodjur, en hona och en hane, i treårsåldern tillsammans i ett hägn.
Effect of Bacillus mediated priming on different natural genetic variants of Arabidopsis thaliana
In two feeding experiments Bacillus induced priming of plant defense was tested for its effect against the generalist insect pest Spodoptera littoralis. The main hypothesis for the study was that Bacillus induced priming would enable the plant Arabidopsis thaliana to defend itself
better against this insect herbivore since this priming seems to involve jasmonic acid, known to be important for plant defense to insects. A secondary objective of the study was to examine if any differences in a primed defense capability could be seen between different natural genetic variants (ecotypes) of A. thaliana reflecting habitat differences in pest pressure.
The methods used for plant cultivation and Bacillus inoculation were aimed at reflecting conditions that can be expected in an agricultural cropping system. This meant that all plants were cultivated in soil, and the feeding experiments were conducted with the plants growing intact in the soil system.
Kultur och ekologi i Amazonas: GIS-bearbetning av historiska data om indianfolkens utbredning
This study deals with some contested issues regarding prehistoric cultural development in Amazonia and the colonial impact on the native inhabitants of the area. It focuses on the relation between groups belonging the language families of Tupí and Gê, on one hand, and the different ecological zones that they inhabit, on the other. GIS mapping is used to visualise the distribution and movements of these groups in relation to ecology and the impact of European colonization. GIS is shown to be a useful methodology for analysing historical data derived from written sources and maps. The results of these analyses are discussed in the light of different theoretical perspectives.
Metodutveckling för analys av serglycinuttrycket i blodet hos hundar :
The development of quantitative, real-time PCR (qPCR) combined with the mapping of the canine genome opens new possibilities in veterinary medicine. This method provides a quick and accurate quantification of the expression of a specific gene at a given point in time and thereby also information of how the gene expression for a certain protein is influenced by various conditions and diseases. One possible area of application is identifying bio markers for cancer. Recently the protein serglycin (the core protein of an intracellular proteoglycan) was found to act as a selective marker for the disease acute myeloid leukemia in humans (Niemann et al, 2007). Serglycin is produced by most hematopoietic cells, although mast cells account for the largest amount of serglycin.