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1195 Uppsatser om Habitat selection - Sida 3 av 80
Effekter av "Billigaste väg" för Stora Enso Skogs transportverksamhet :
Transportation constitutes a large part of the forest industry's raw material costs. Transport also contributes a significant proportion of the carbon dioxide emissions. In order to reduce both the cost and environmental impact different types of decision support are required. These, in turn, require extensive information about the road network and correct information on road path selection and transport distances. In the development of national road data base for forestry (SNVDB) a road selection application has been included.
Validation of KIDScore? D3 Basic, a morphokinetic model for improved embryo selection
ABSTRACT Infertility is a medical condition that affects approximately 16 % of Swedish couples in childbearing age and is a condition found in both men and women. When a couple has been trying to conceive for more than 12 months without success they need to see a health care provider. Infertility can be treated with medicine, insemination or assisted reproductive technology such as in-vitro fertilization (IVF) and intra-cytoplasmic sperm injection (ICSI). The aim of this study was to validate a morphokinetic selection model, KIDScore? D3 Basic, against morphological selection model that is currently in use at the Fertility unit at University hospital in Orebro.
Hårda dörrar : Om dörrvakters selektering av gäster på krogen
The purpose of this study was to examine in depth and analyze how and on what basis selection of guests managed by doormen primarily in an exclusive bistro in Stockholm. Qualitative methods in the form of personal interviews with door staff and participant observations were made. Interviews with doormen who work at two other similar places have also been carried out in order to find the differences and similarities in the selection process. To connect the results in a scientific way, we have mainly used Pierre Bourdieu's theories of capital forms and the field, and Göran Ahrne and Apostolis Papakostas organization theories. Previous research related to the phenomenon of selection in one way or another, along with the overarching theories, are used to answer the questions and purpose of this study.
Tjäderns (Tetrao urogallus L.) vinterdiet i norra Sverige : är gran (Picea abies) viktig i vissa habitat?
In Scandinavia, capercaillie are often associated with pine trees (Pinus sylvestris) in winter, with pine needles as the main diet. Few dietary studies have been conducted in Sweden and winter diet is subject to little debate. The interesting thing is that this "pine specialist? is also found in spruce (Picea abies) forest habitats where pine is scarce or unavailable. In many studies outside Sweden (primarily Central Europe) spruce is regularly observed in the winter diet, but I have found no reports on the selection of the diet in spruce forest areas in Sweden.
Vilken preferens har tjockskalig målarmussla (Unio crassus) för bottensubstrat och vattenhastighet i Storån, Östergötland?
The thick shelled river mussel (Unio crassus) has a fragmented distribution in southern Sweden. It is a threatened and protected species. In both the Swedish red list and the IUCN Red List of Threatened Species Unio crassus is classified as Endangered (EN). Causes for this classification are for instance differentiated bottom substrate and deterioration in water quality. In this study, habitat preferences of Unio crassus were investigated to assist in future restoration work.
Mode bakom kulisserna: - Praktik och förutsättningar för snabbhet och flexibilitet i inköp
Purpose: To explore the purchasing function, mainly the supplier selection activities, in the fast fashion apparel industry. The purpose is 1) to explore the criteria associated with supplier selection for fashion products, and 2) to analyze the purchasing activities in order to find characteristics and trends which are considered to be strategic for the buying company. Method: The empirics consist of qualitative interviews with employees with responsibility for the companies' purchasing activities, as well as information gathered from articles, annual reports, and company websites. Result: The study indicates that qualitative criterias have increased in importance, and have become an important part of supplier selection for fashion goods. A number of characteristics where identified as important for purchasing fashion goods, which can affect choice of supplier; examples are increased collaboration, increased re-buys and increased use of logistics services.
Garnlavshabitat i Vilhelmina kommun
Intensivt skogsbruk har medfört stora förändringar i den boreala skogens struktur och sammansättning. Epifytiska gammelskogslavar så som garnlav, Alectoria sarmentosa, tillhör de arter som drabbats hårt av korta omloppstider och ökad fragmentering av skogen då de kräver gamla träd som substrat samt är känsliga för förändringar i mikroklimat. Vi har med en GIS-analys gjort en modellering över hur stor andel lämpligt habitat för garnlav som finns i Vilhelmina kommun samt hur det är fördelat i landskapet. Modellen baserades på en regressionsfunktion med data från Riksskogstaxeringens inventeringar av hänglavar som grund. En utsökning med kNN-data (satellitdata över Sveriges skogsmark) som bas gjordes och en karta över var i landskapet det förelåg hög sannolikhet att påträffa bra habitat för garnlavar producerades.
Suitability analysis of a reintroduction of the great bustard (Otis tarda) to Sweden
The great bustard (Otis tarda) became extinct in Sweden during the mid-19th century. Globally, populations have suffered dramatic declines during the past two centuries. Recently, local populations have stabilized or increased after hunting bans and conservation efforts. Despite positive trends the species is still classified by IUCN as vulnerable (VU), mainly due to withdrawals in the distribution. The limited distribution emphasizes the need for finding ?new? areas suitable for a translocation or reintroduction.
Objektivitet ? en ekonomisk fråga?: Urvalsfaktorer bakom inköp av utländska dagstidningar på svenska folkbibliotek
The purpose of this thesis is to describe and understand the existing factors behind the selection of foreign newspapers in Swedish public libraries. We wanted to study this subject because the political situation in many countries is reflected in the newspapers and can cause difficulties in the selection process. Examples of this can be how to avoid newspapers with political propaganda and with censored content. Another reason for our interest in this subject is based on our prejudice that newspapers from other countries are important for people with foreign background. To answer the question we have conducted qualitative interviews with five persons who are responsible for the purchase of foreign newspapers at four libraries.
Utvärdering av viabilitet hos selekterad hingstsperma med hjälp av fluorometri :
There is considerable variation between stallions in semen quality and fertility due to the fact that selection of stallions for breeding is not based on fertility or semen quality but on performance. The increasing use of cooled semen for artificial insemination has resulted in decreasing pregnancy rates. Therefore the equine breeding industry needs new methods for evaluation and development of sperm quality and fertility. This study is a part of such a project and is performed by SLU in cooperation with Flyinge AB. Ten stallions at the Flyinge National Stud were used in the study and three ejaculates were collected from each stallion.
Till glädje och vinst: en jämförande studie i urval av skönlitteratur inom bokhandlar och bibliotek med avseende på faktorer som marknad, efterfrågan och kvalitet.
The aim of this thesis is to investigate how purchasingmanagers in bookshops and public librarians reason withregards to their selection of fiction literature. Nineinterviews have been conducted in this qualitative studymade in the spring of 2013; four librarians, four bookmerchants, as well as a market director of a major chain ofbookstores. Our focus has been particularly directed toascertaining what influence the cultural-political mission oflibraries have had on the process of selection, as well as theextent to which factors such as demand and quality play apart in both organizations. We have been interested inseeing how libraries and bookstores compare with regards tothese factors, because of obvious differences in their goalsand purposes. Librarians see both the benefits and flaws intheir way of working, as well as in the way in whichbookstores conduct their business, and vice versa, that theyare often successful in cooperating, like when arrangingvisits from authors etc.
Artrikedom av kärlväxter i övergivna och restaurerade hagmarker : betydelsen av igenväxningsgrad och tid sedan igenväxning började
Continuously grazed grasslands have remarkably high plant species diversity. In Sweden this type of habitat has declined for the last two centuries. Changed land use has caused habitat fragmentation and loss of habitat quality. This has caused a great number of plant species to end up on the verge of extinction. To try to save this unique habitat and the species that are tied to it, lots of resources are laid on restoration of abandoned grasslands.
In this study, plant species richness of continuously grazed, abandoned and restored grasslands were related to degree of overgrowth, time since overgrowth started and rate of overgrowth.
Utvärdering av näringsstatus inför återskapande av kalkkärr vid Hagebyhöga, Östergötland
Calcareous fens constitute a specific habitat which is uncommon in Europe and protected by the EU habitat directive due to its importance to several threatened species. Hagebyhöga in Östergötland is a calcareous fen habitat included in the Natura 2000 Networking Programme. Adjacent to the existing fen, a degraded fen area is situated. The area has been used for agriculture for several years but is now going to be restored to its former state by the county administrative board of Östergötland.When working with restoration of degraded fen areas it is important to aquire knowledge about the chemical soil conditions. Plant growth limited by phosphorus and low fertility are characteristic conditions for calcareous fens, whilst arable land usually is highly fertile and limited by nitrogen.The purpose of this study is to bring forth useful knowledge for restoring the degraded calcareous fen of Hagebyhöga.
Brown bear (Ursus arctos) den site concealment in relation to human activity in Scandinavia
As a hibernating species, the brown bear spend most of the winter months in a den as astrategy to avoid unfavorable conditions. The denning period is a vulnerable time for bears,making them unable to flee disturbances without losing valuable amounts of energy. Brownbears' wariness of humans and avoidance of anthropogenic disturbance often steer denningbears away from human infrastructure, and bears thereby avoid possible disturbance and itsassociated energetic costs. This study was carried out to test the hypothesis that bearsdenning closer to infrastructure select more covered den sites to compensate for the closedistance. Dens from 32 individuals were visited and analyzed in terms of sighting distance(a measurement for den horizontal cover) and habitat ruggedness, in relation to distances toinfrastructure.