Sökresultat:
918 Uppsatser om Species interactions - Sida 43 av 62
Återförvilda Sverige?: En studie av rewilding som strategi för att bevara kulturlandskapet och gynna biologisk mångfald
Through millennia, humans have shaped the European landscapes. Agriculture, hunting andforestry have influenced virtually every ecosystem on the continent and formed what we todaythink of as the cultural landscape; a mosaic pattern of cropland, fields, pasture and forests. Thepast two centuries, globalization, industrialization and urbanization have come to pose a threatto the existence of these landscapes. European farmlands are now being abandoned at analarming rate, and the associated loss of landscape preservation, biodiversity and ecosystemservices is a concern to the scientific community and public alike.This thesis studies if the implementation of the relatively new conservation strategy rewilding(recreating self-sustaining ecosystems and reintroducing keystone species) can be a part of thesolution to preserve cultural landscapes and biodiversity in Sweden. Through interviewssupplemented with studies of published works, expertise from different fields has beencompiled to provide an overall picture of the capacity of rewildings as conservation method.
Biologisk mångfald i staden och dess närhet : möjligheter att som landskapsarkitekt främja biologisk mångfald
In a time of increasing urbanization the human tenure effects on the land has lead to a decrease and fragmentation of areas that are valuable to urban wildlife. These actions have had a detrimental effect on the species and habitats that exist in cities and towns.This paper investigates, through the study of relevant literature and the undertaking of interviews and field visits, the role that biodiversity plays in our society. The current attitude towards urban biodiversity and the responsibility for its promotion within the landscape architect profession has been explored.This paper includes three English case studies and a design proposal investigating how one can work to promote biodiversity on a smaller scale.This paper concludes that urban biodiversity is multi-functional ? being of ecological, social and cultural significance. The landscape architecture profession must be aware of the need to combine a variety of different factors such as economical, social and environmental aspects.
Skogsbolagens syn på vindskadeförebyggande åtgärder efter stormen Dagmar
On the night of the 26th December 2011, large parts of southern Norrland were struck by the storm ?Dagmar? that caused serious damage to the forests. In the past 10 years wind damage has become a hot topic after several major storms. Forest companies own 25% of the Swedish forest and thus influenced largely by wind damage. The main purpose of this study was to examine whether forest companies attitude towards preventive wind damage actions were changed after the storm ?Dagmar?.
The result was developed by doing interviews with two forestry companies.
The heartbeat under your necktie ? fysiska f?rem?l och den sociala milj?n i Ted Koosers "Delights & Shadows"
This essay examines through a sociological perspective how physical objects in Ted Kooser?s poetry collection "Delights & Shadows" can be used to depict the characters? social environment. This is done by examining the physical objects found in 25 poems, the relationships between subjects and objects, and how this relationship can describe the social environment. The essay also examines how the relationship between subjects, objects, and the presence of the social environment within the text affects the reader experience. The physical objects are examined with Bill Brown?s Thing Theory as "things" that stop working for humans, when their flow within the circuits of production and distribution, consumption and exhibition is arrested, however momentarily.
Indirekt blodtrycksmätning hos hund och katt :
The objective of this study was to study the agreement between two methods of indirect bloodpressure measurement in dogs and cats and to establish the within-method variation for the methods. The utility and practicality in the clinical setting were also evaluated for the both methods. The techniques evaluated were the oscillometric method and the Doppler ultrasonographic method. Thirtytwo dogs and 26 cats were used in the study and seven dogs and five cats out of these animals had diseases that may effect the bloodpressure. Bloodpressure was measured in both anesthetized and in conscious animals.
Nyckeltal för älg och fodertillgång på tall Pinus sylvestris och rönn Sorbus aucuparia
It has been shown that moose can affect plant community composition and structure. Selective browsing with other damages of large herbivores on tree species with different tolerance to disturbance could reshape the tree layer in both managed and natural forests. Rowan Sorbus aucuparia is widely distributed throughout Sweden and Europe. Research has shown that browsing by moose may prevent rowan from reaching browsing safe heights. The goal has been formulated that, where rowan is indigenous, it should have a good competition status and be able to reach tree level.
"Jag tror att det är ärftligt och att det är biologiskt.. och så tror jag att det är.. eller ja.. jag tror att det är biologiskt". Konstruktionen av ADHD och DAMP i skolans och vetenskapens värld
The purpose of this study was to investigate the understanding of the diagnoses ADHD and DAMP within different professional categories in the educational system, how it is being addressed and how this affect their work with children diagnosed with ADHD or DAMP. We also wanted to shed some light on the debate between Kärfve and Gillberg, about whether the diagnoses of ADHD and DAMP are social constructed problems or biological and genetic disorders. More specifically, our study was of a qualitative nature and consisted of interviews with seven persons working in six different professions within the educational system. The respondents all worked in school environments but with varied roles and thus varied experience of children with ADHD/DAMP. The interviews and literature studies revealed the complexity of ADHD and DAMP and also the diversity of the debate regarding the diagnoses.
Social preference and diet learning in goat kids at pasture
AbstractHerbivores can be classified into either hiders or followers depending on their postpartum behaviour. The two behaviour types affect the spatial relationship between the mother and her infant. Goats are seen as hiders, although the environment plays a central role when it comes to the behaviour. Therefore, in the first part of this study the aim was to investigate how the goat kids? spatial relationship changed in the transition from indoor housing to pasture.
Förgiftningar hos hund och katt
Cats and dogs are often unattended by their owners both indoors and outdoors, and therefore there is always a risk that they will get hurt. In the past, poisoning cases was considered unusual, but nowadays they are considered more common. As a veterinary nurse, it is important to know the common symptoms of poisoning, especially when working with emergency veterinary care. A very essential part of the profession as a veterinary nurse is to inform pet owners about the potentially dangerous substances and how poisonings can be prevented.
The purpose of this report was to find out what is written scientifically about some common poisonings in dogs and cats and to present available statistics that covers the number of animals poisoned by various substances in Sweden. Hopefully this essay can also be used as a handbook for professionals in animal health care and to assist in educating pet owners.
The report mainly covers groceries found in many homes, often easy accessible.
Plask : ett gestaltningsförslag för en ny park i Västerås
The park at Djäkneberget and its surroundings
is a beloved area in the city of Västerås. The
area is one of the most popular sites for outdoor
life and recreation of all sorts and it attracts
different kind of people at different times during
the day. The park includes a pond-system where
protected species of frog and toad live and breed.
These animals have been the objects for many
discussions concerning whether to explore the
closeby areas or not. The prospected area is
situated just next to one of the main ponds and
consists of valuable foundationwalls were experts
predict that the frogs and toads spend the winter.
The municipality has now decided to restore this
area to parkland.
Because of the areas fascinating history I have
chosen to do some research and give a short
resume about it. For example are the existing park
of Djäkneberget and its founder described together
with a short description of the watersystem with
the watertower that is situated in the area.
Viktiga egenskaper hos framgångsrika svenska skolskogar :
A substantial part of the Swedish outdoor education is being practiced in so called ?school forests?. The concept school forest was first introduced in the 1980?s by the organization Skogen i Skolan. The definition of a school forest is an area that is being used for educational purposes, over which the school and the land owner has reached an agreement of how the school may utilize it.
Digitaliseringens förändring av bokbranschen
This is a bachelor thesis, written at the business studies institute, Uppsala Unviersity, exploring how digitalization has affected the Swedish book industry. This is done by studying how the introduction of the e-book has changed the way the publishers work and what problems and opportunities arise with the new way to publish and consume books. The technology optimists, that existed around the turn of the millennium, when the e-book came, made predictions along the lines of the physical book having ceased to exist within five to ten years. But the physical paper books do very much still exist, so haven?t the change happened as predicted? The purpose of this thesis is as follows: How has introduction of the e-book affected the relationship between the Swedish publishers and the book as a whole? This means that we consider the book as a concept, as a resource or product, and study how a change in this product affect publishers.The theoretical framework used is basically classical network theory.
Undersökning : hur gestaltas den anlagda miljön vid naturum?
Rotavirus causes diarrhea in young mammals all over the world, including infant humans. The diarrhea leads to severe dehydration that can be fatal if left untreated. The dehydration can be treated with fluid therapy and the infection heals itself. Despite the relatively easy treatment half a million children under the age of five dies every year due to diarrhea caused by rotavirus. Rotavirus sorts into the family Reoviridae and is a double-stranded RNA virus with a segmented genome.
Utveckling av en Multi-Zonsmodell för NOx Bildning i Diesel Motorer
This thesis work is the last part of the Master of Science education inmechanical engineering at KTH, Stockholm.The aim of this project was the development of a Multi-zone modelfor NOxformation in Diesel engines. Because of the stringent emissionlegislations, great effort is made to decrease the fuel consumption and theharmful emissions of internal combustion engines. Computer simulationsplay a decisive role in this context because they substitute the expensiveand time-consuming laboratory tests.The model is based on a multi-zone approach and uses the wellknownExtended Zeldovich Mechanism which gives a relation to calculatethe NO formation rate using the concentration of different gas speciesinvolved in the process.All the most important phenomena involved in the Diesel combustionhave been modelled. A special attention is then paid to the equilibriumconcentration calculation; this is a significant part of the model whichstrongly influences the following steps.A Simulink model has also been developed. This second version isbased on the previous model and it is made especially to allow theconnection with other external softwares, GT-power in this case.
Fodder to ruminants within agroforestry systems in Rwanda - species and management
Rwanda is one of the poorest countries in the world and about 70-80 % of the population lives in rural areas. The land is strongly affected by land erosion which makes it difficult for the agriculture and food production. Agroforestry is a system where tree plantation is combined with livestock- and crop production. The system provides soil fertilization and binds the soil together. Some of the trees used in agroforestry systems are also used as fodder.