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1337 Uppsatser om Population biology - Sida 16 av 90

Folkbibliotek som mötesplats för flyktingar : En undersökning av två folkbibliotek och deras potential att öka socialt kapital i samhället

This essay points at the importance of public libraries as arenas of meetings between refugees and the local population, and by this - creating social kapital in the society as a whole. The researchers Aabø, Audunson and Vårheim have created theories about low-intensive meeting places, that means ? neutral, public places where accidential meetings with different strangers can happen, which can create social capital and trust among each other. To complement these theories I also use Vårheim who have implementet social capital-theories to the sphere of public libraries. These two theories complement each other and can help me investigate two public libraries in a rural area in Sweden.

Enkla kemiska processer inom förskolan : En kvalitativ intervjustudie om förskollärares uppfattningar och tankar om läroplansmålet enkla kemiska processer

The aim of this study was to investigate preschool teacher?s perceptions about the curriculum goal concerning simple chemical processes. The result was based on narratives received by a qualitative study and semi-structured interviews of six preschool teachers. The results of the study showed that preschool teachers perceive that they actually are working in a relatively small scale with simple chemical processes and they do not really know what simple chemical processes are, and do not feel very familiar with the subject. Water, dough, mud, paint and baking were the most common activities that were used when working towards the curricular goal. However, it was never explained to the children that it was simple chemical processes they were working with during the activities, neither was it discussed among colleagues because of the uncertainty about the concept.

Flodpärlmusslans status i Laxtjärnbäcken : Effekter på flodpärlmusslan av sedimentbelastning och förekomst av bäckröding

The aim of this present study was to determine and evaluate whether the presence of brooktrout (Salvelinus fontinalis) and sediment load may be a threat against the reproduction anddistribution of freshwater pearl mussel (Margaritifera margaritifera) in a creek located innorthern Sweden. Freshwater pearl mussel is an endangered species and is dependent ofbrown trout (Salmo trutta) to reproduce. Therefore there are concerns of indirect effects onthe population of pearl mussel by competition between brown trout and brook trout. Ditchesfrom a nearby gravel road have been fixed to lower the sediment load into the creek. I tried toevaluate this action plan.

Grey-sided vole and bank vole abundance in old-growth forest patches of different size and connectivity

Vole populations in northern Scandinavia vary in cycles with peaks every third or fourth year as described by the National Environmental Monitoring Programme of small mammals (NEMP). Some vole species have declined in population numbers since the NEMP started in 1971, especially the grey-sided vole (Myodes rufocanus) which is nearly extinct in the forested region. Since small mammals are an important food source for several avian and mammalian predators, the decline in vole numbers is expected to have consequences for the whole food chain, especially if other vole species start to decline in numbers. This study tried to test the hypothesis that presence and abundance of M. rufocanus (a specialist species) and Myodes glareolus (a generalist species) can be predicted by patch size and connectivity of forest patches >60 years old with a minimum of 15% pine >100years old.

Lantbruksbaserad biogasproduktion - miljö- och energivinster

Klimatförändringar i världen är ett stort problem där alla måste hjälpa till för att stävja dess inverkan på vår livsföring. Ett problem är utsläppen av växthusgaser där djurhållningen står för en viss del. Vid djurhållning sker det en avgång av metangas både genom matsmältning och genom gödselproduktion där endast den sistnämnda är påverkbar till en rimlig kostnad. För att beräkna avgången av metan från djurhållningen i Helsingborgs stad måste man göra en inventering av djurantalet. Ett bra sätt för att utvinna metangas ur gödseln är att röta den och sedan förbränna den till koldioxid och vatten.

Integrationen av etniska minoriteter i de tre Baltiska staterna

This essay is a comparative empirical study of ethnic integration mainly of the Russian-speaking minorities in the three Baltic states (Estonia, Latvia and Lithuania) in a post-communism setting. As Lithuania has a Polish minority that is as large as the Russian-speaking, they too shall be included in the study but not as thoroughly as the Russian-speaking minority. Thus the problem is: to what degree are the ethnic minorities integrated with the titular nations in Estonia, Latvia and Lithuania? In order to study ethnic integration I have set up a theoretical framework largely based on Weiner?s theory of integration. The theoretical framework focuses on three dimensions: Citizenship, Identity and Segregation.

Den svenska lapphunden - en ras i behov av förändring?

Many pedigree dogs are suffering from inherited diseases or personality disorders caused by selective breeding. The Swedish lapphund is a breed that has been suffering from some loss of genetic variation due to the heavy use of only a few males. Concerns have arisen and crossbreeding has been discussed as a way to manage gene loss. Four breeds has been taken into consideration for this purpose; schipperke, finish lapphund, Norwegian buhund and Norwegian elkhound, black. These breeds has been tested theoretical by a comparison of mentality and health.

Upplevelser av att arbeta med djur på daglig verksamhet : En kvalitativ intervjustudie bland personer med funktionsnedsättning

The central part in all public health work is health promotion and disease preventing actions among the population. Since all public health work includes the whole population, the work has to embrace disabled people as well. Within the disability policies, participation and equality are important goals, which illustrate the importance of a job. In previous studies the positive effects of animal have been detected among persons with disabilities, by better balance, better mobility, larger social network, new knowledge and most of all happiness. The aim of this study was to investigate how people with disabilities experience their health when they are working with animal husbandry at daily activities.

Effekten av klimatförändringar påkontrollbehovet av åkerogräs

With a changing climate, we can expect higher temperatures and more precipitation in Sweden.As the temperature increases, new weed species are expected to migrate in from more southerlylatitudes, resulting in requests for new techniques for weed control. In addition, we might see agreater number of weed species and higher biomass production due to increased concentrationof CO2 in the atmosphere.Increased understanding of the biology of specific weed species will become more importantin future weed control. This will help to control the weeds more efficiently. Higher prices onpesticides and a public demand for reduced use of pesticides make growers more inclined to usemechanical weed control on a larger scale and to a greater extent prevent weed establishmentbefore sowing. A well-planned crop rotation is the most important preventive measure, whichmight also include delayed sowing, and dark harrowing and sowing.Research takes place on many levels within the weed area and several alternative methodsare being developed.

Hultsfredsfestivalen : Hur ett evenemang kan inspirera, påverka och utveckla en ort.

Purpose: The purpose with this study is to clarify what importance a co-occurrence event can have on a smaller town, and also what positive and negative consequences it can have on the town seen from a social, economic and political aspect. I will also look at what magnitude the festival have on the local commercial and industrial life and how it affects those who live there. I will also determent how the moving of the festival might come and affect the local businesses, the local population and the community it-self.Method: I will thorough-out this study work with qualitative research methodology. I will there-for process the empirical data that will be collected and used for this study from a qualitative research methodology point of view. I will likewise go through with two deep-going interviews with people well familiar with the subject to increase and strengthen the validity of my study.

Att möta den som ropar högst : En studie om biståndshandläggares bemötande av demenssjuka individer

The Swedish population is getting older and more elderly will continue to be in need ofsupport from the community to meet their everyday lives. As the population gets olderdementia also increases the spread in the country. Because of this more people withdementia will be in need of help in their everyday lives. This will increase the demandson elderly care in the municipalities where they have to offer good care. As moreindividuals suffering from dementia will be in need of help in their daily lives aid officers'encounters with people suffering from dementia and their relatives or any representativesbecome more common.The study had as objective to study aid officer's reasoning on the treatment of dementedindividuals in need of help.

Metoder för att beskriva kumulativa effekter med avseende på biologisk mångfald och vägar :

Cumulative effects are seldom treated in Swedish Environmental Impact Assessments (EIA). This report treats these questions and which procedures and methods that can be used when assessing cumulative effects in EIA. This report is a literature study where also a case study is a part. The case study shows how existing methods for cumulative effects can be used in practice. The report is concentrated on biology and treats cumulative effects on premises of biodiversity and roads. Cumulative effects include both direct and indirect effects.

Fiskarebönder och landskapet i Karlshamns skärgård förr och nu

Hällaryd archipelago, consisiting of approx. 50 islands, islets and skerries, is situated east of Karlshamn city in Blekinge province. The archipelago has been shaped into a rift valley by volcanic activity, the inland ice and maritime climate.The archipelago is divided into seven main islands: Bockö, Västra Bokö, Ekö, Hallö, Joggesö, Mjöö and Tärnö. This essay will connect population changes with land use.

Vetenskapsjournalistik i radio - Vad får vi veta? : En innehållsanalys av vetenskapsradions nyhetssändningar hösten 2004

AbstractPurpose/Aim: The aim of this essay is to paint a picture of science news reporting in the Swedish Public Service science programme, vetenskaps-radion. Key issues to be adressed are: What areas in science are prioritised? How much of the total broadcast time are devoted to each area? Are there any differences in reporting between weeks? How well does the swedish science radio match common interets? Are the news in the form of short ?soundbites? or are they more lengthy in-depth?Material/Method: Quantitative analysis of radio programmes. The variables used are based on the different major areas in natural sciences.Main results: This study shows that most broadcast time is devoted to news regarding biology and medicine and that the news rather are in the form of short snippets of news than more lengty in-depth stories. This is put in light of how journalistes tend to present news and that the subjects involved has to relate to peoples everyday lives.

Genflödet från genetiskt modifierade grödor till vilda populationer

Tillämpningen av genetiskt modifierade (GM) grödor har varit utbredd över hela världen och har ökat markant sedan den första GM-grödan blev tillgänglig för kommersiellt bruk 1996. Sedan starten har det tillkommit mycket forskning kring risken för spridning av transgener från grödor till vilda populationer. För att en transgen ska kunna etableras i en vild population så måste tidiga generationer av hybrider överleva för att kunna återkorsas upprepade gånger med den vilda arten, det gör att det genetiska materialet från grödan succesivt reduceras i varje generation tills det att transgenen är det enda DNA från grödan kvar hos avkomman. För att denna process ska vara stabil krävs det en stark selektion för transgenen. Det här sättet för en gen att etableras i en population kallas för introgression och tros ha spelat en stor roll i växternas evolution.

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