Sökresultat:
303 Uppsatser om Predator-prey interactions - Sida 5 av 21
Effekter av predationsrisk på sånglärkors (Alauda arvensis) habitatval på åkermark
Along with other European farmland birds, the skylark (Alauda arvensis) has declined rapidly since the 1970?s. Between 1975 and 2003, the Swedish population of skylarks declined with 64 %. In Britain, the decline is often explained by alterations in farming practices in general and the shift from spring-sown to winter-sown cereals in particular. The dense vegetation structure of winter cereals is limiting the number of breeding attempts possible, causing the entire population to decline.
Interkulturella relationer : en kvalitativ studie om lärares och elevers förhållningssätt till etniska och kulturella bakgrunder
The purpose of this study is to investigate whether and how some teachers in primary education in a multicultural area discussing the interculturality in their teaching with students from grades 1-3. It also aims to examine how students? cultural interactions in the classroom are expressed..
Att bryta nacken av skammen : En studie om kvinnliga alkoholister och skam
The purpose of this study is to explain how shame can be experienced by women with the stigmatizing illness of alcoholism. Another aim is to illustrate how this shame can be affected in social interaction with others and by other circumstances. The following questions will be highlighted in this essay: How can shame be experienced by female alcoholics? What can affect shame in interaction with other people, from the view of female alcoholics? What other circumstances can affect the shame, from the view of female alcoholics?This study features interviews with women who have successfully gone through the process of rehabilitation from the illness of alcoholism, have a long going and stable sobriety and arecurrently part of the work force. The study also features interviews with therapists specializing in the field of addiction recovery and have considerable experience in their fieldof working with women suffering from alcoholism.The subject matters shame and stigma form the theoretical/analytical tools for this research.
Fisksamhället i Spexhultasjön, Nässjö
The lake Spexhultasjön is a moderate humic mesotrophic lake that is not acidified. The fish fauna was investigated by using a standard method for sampling freshwater fish with multi mesh gill nets. The fish fauna was diverse with perch, pike, tench, common whitefish, and roach. Perch and roach dominated. There were few pikes.
Generella riktlinjer vid distribuerad Scrum
Today many companies are global and can exist all over the world. It is more common that projects are conducted in different locations, from various cities in a country to nations in different parts of the world. To manage projects both traditional practices such as the Waterfall method and new flexible methods known as agile methods are used. How is the process affected when a project is distributed, when the team is scattered in different places? This makes it difficult to create a good project, something we will discuss and try to find solutions for.
Gamla tallars betydelse för biologisk mångfald på Gotland
Modern methods for managing pine (Pinus sylvestris) create homogenized forests. This decreases nature?s potential for biodiversity and might threaten species in need of different types of milieu. The main purpose of this study was to investigate how important older pine trees are for biodiversity. In the Hall-Hangvar Reserve in the north-west part of Gotland, insects collected from traps showed that more species were found in old or dead trees compared to younger pine trees.
Den accepterade anpassningen : Hur tolv barn tillhörande etniska minoritetsgrupper upplever sin vardag i skolan
KALMAR UNIVERSITYDepartment of Health andBehavioural Sciences.Education of Social Work 21-40 p.C-essay, 10 p.Title: The Accepted Adjustment ? How Twelve Children Belonging to Ethnic Minority Groups Experiences Everyday Life in School.Authors: Kristin Lundin & Karin SwartlingSupervisor: Jesper AndreassonExaminer: Ulf DruggeABSTRACTThe aim of this C-essay, using a qualitative method and from a child prospective, explore how children belonging to ethnic minority groups participating in the Swedish education system at an intermediate level, experience everyday life at school and the interactions with their teachers. We have interviewed twelve children between the age of eleven and thirteen years old. The children have either immigrated (adopted children are included) or are born in Sweden but have at least one parent who has immigrated.The outcome from our study is that immigrant children have a positive experience of their daily life in school and in their interactions with their teachers. The majority of children state that they view their teachers as good educationalists.
Pig behaviour during crowding : a study in organic and conventional herds
Rearing in organic pig production differs from conventional rearing; pigs have outdoor access and larger space allowances. Regardless of production system all pigs are transported before slaughter and during transport pigs are crowded together in a new environment and in a space smaller than they are used to. As pigs in organic herds are reared at even larger space allowances than conventional pigs, such crowding could possibly have a stronger impact on pig behaviour and well-being. Six pig producing herds, three conventional and three organic, were visited and pigs from each herd were enclosed during 12 minutes in a test area corresponding to the crowding on a transport vehicle. During the crowding, pigs? behaviour was observed, before and after enclosure in the test area skin lesion scores were recorded, and also measures of heart girth (for weight estimation) was done.
Att vara patient med HIV: erfarenheter av möten med sjukvårdspersonal : En systematisk litteraturstudie
Bakgrund: Humant Immunbrist Virus (HIV) är en infektionssjukdom som angriper kroppens immunförsvar vilket leder till att det stegvis försämras och slutligen helt avtar. Historiskt sett har patienter med HIV blivit diskriminerade i samhället och orättvist behandlade. Joyce Travelbee?s omvårdnadsteori tar avstånd från en generaliserande människosyn och förespråkar att se individens unika egenskaper, och sjukvårdspersonal ska enligt lag möta patienter med lika värde och lika vård oavsätt diagnos. Syftet är att beskriva erfarenheter som vuxna patienter med HIV har av möten med sjukvårdspersonal.Metod: En systematisk litteraturstudie.
Förekommer kränkande behandling? : En kvalitativ studie av förskolebarn och pedagoger.
The following paper is about degrading treatment in preschools and the essay discuss degrading treatment according to the Swedish school law, in preschools and the chosen focus for this study is three to four year old children. The aim is to see whether or not preschool children proceed with degrading treatment towards other children and if preschool teachers believe that children this young have the ability to do so. The questions for this study are: Can children proceed with degrading treatment towards each other? Which conflicts evolve through children?s interactions? Can children in pre-schools have a degrading behavior? To answer these questions participant observation at two preschools and interviews with four preschool teachers were chosen as method. The perspective of this paper is based on the view on children as actors, which is used to acknowledge and enhance the possibilities of letting the children?s own voices be heard.
Plasmodiophora brassicae ? host and environment interactions
In this thesis, three separate experiments have been performed on different aspects of the interaction between the causal agent of clubroot, Plasmodiophora brassicae, and its hosts.
In the first experiment the pathotype of the P. brassicae single spore isolate, which is currently used to construct a reference genome, has been classified using the ECD bioassay. The disease severity of infected plants was scored according to two different scales and the pathotype was determined according to three previously published guidelines. The results were compared to previous published studies describing the e3 isolate.
The life cycle of P. brassicae is not well understood.
Predation av sandräka (Crangon crangon) på juvenil piggvar (Psetta maxima) och juvenol skrubbskädda (Platichtys flesus) : betydelse av yngelstorlek för överlevnad hos piggvar och skrubbskädda efter bottenfällning
Turbot (Psetta maxima) and flounder (Platichthys flesus) are two species of flatfish both having their nursery areas around the shores of Gotland in the Baltic Sea. The common brown shrimp (Crangon crangon) is a known predator on newly settled plaice (Pleuronectes platessa) in the North Sea area and is also found in the Baltic Sea. Experiments were carried out to see if the brown shrimp is predating on juvenile turbot and flounder, and if so on which sizes, and if the brown shrimp prefers any of the flatfish species, and also to see if there is a difference between day and night in density of the shrimp, i.e. when the fish might be subjected to predation. The results showed that predation decreased with size for both turbot and flounder.
Påverkan av brunbjörnens habitatanvändning på älgens betesval
Det är vedertaget att rovdjur påverkar bytesdjurs val av område och beteende. Syftet med det här arbetet var att undersöka om rovdjurs användning av habitat har någon påverkan på svenska älgars födobeteende. I denna studie undersöks brunbjörnens påverkan på älg och datainsamlingen utfördes i björnrika områden i Dalarna och Gävleborgs län.
De data som samlades in var data som rör bete (andel och höjd över marken) och habitatets egenskaper (sikt), därefter undersöktes om det förekom skillnader i andelen betat beroende på habitatanvändning av predator och habitatets egenskaper.
Resultatet visade på tydliga skillnader i älgens betesmönster beroende på om det var hög eller låg predatoranvändning av habitat.
Student tvåsidiga T-test och regressionsanalys användes för att ta reda på hur tillförlitliga resultaten var.
Resultatet visade att det är en signifikant skillnad i älgens betesmönster (beteshöjd) beroende på i vilken utsträckning björnar använder habitatet. Älgens bete påverkades också av sikt från betesplatsen, vilket i sin tur var beroende av predatoranvändning inom habitatet, men den skillnaden var inte signifikant..
Ombyggnation av ett stall för bundna mjölkkor till boxsystem för rekryteringskvigor
To reconstruct a building is a long-term investment for farmers and it is important that people with different qualifications are involved at an early stage for making the system adapted to the animals as well the animal keeper. Therefore, ethologists who can contribute with their expertise are needed to design the system and get it to function well for the animals.A Swedish farmer who planned to rebuild her stall for tied dairy cattle to a loose-housing system for recruitment heifers for milk production asked me as an ethologist to find a system which can be fit to her existing tie-stall barn for 30 dairy cows, considering the animal needs in terms of movement, social interactions and play behaviors, and to theoretically compare the system with other systems with respect to the behaviors mentioned.The theoretical comparison between different systems was made through a scientific literature review.In agreement with the animal keeper I set out to fit a system with feeding cubicles, a system with cubicles and a system with deep straw bedding to the barn. After measurements were taken and preliminary drawings were outlined it was found that only the feeding cubicle system was possible to fit to the barn.The space provided will limit the animals to perform some playing behaviors. To decrease aggressive interactions between animals even thought a limiting area it is possible to provide partitions between resources animals compete around to prevent that more than one animal can get success to the resource at a particular place at one time. To increase the animal movement in the system the water trays were moved to the outer wall instead of kept in contact with the stalls.Although this report provides guidelines for rebuilding, other competences regarding building construction and a pre-test of the suggested building solution according to Swedish legislation are needed before the rebuilding can start.The results are directed mainly to the owner of the barn, but the literature review can be used by other cattle farmers and might bring increased understanding of the possible effects of different building solution on the animals..
Bedragarretorik : En retorisk analys av scam-mail
Every big scam starts with a small invite. You are about to face the inconvenient accusation of you being responsible for your own loss. At least, this was the case for the seller of ?Macbook Pro 15? 2.4 intel-core, 4GB, glossy? in early December 2010.This thesis is breaking apart the comfort zone of being a victim, suggesting we want to be betrayed. Although the ?victim? has detected a risk, his wish to beleive that the affair is what it?s told to be, nourishes the betrayal that can proceed.