Sökresultat:
315 Uppsatser om Habitat preference - Sida 6 av 21
Evaluating six crop mixes used for game fields in southwest Sweden : biomass production, fallow deer preference and species diversity
Game fields are one way to divert animals away from sensitive areas, create shelter and forage, and also to increase the biological diversity. In this study I investigated how the plant composition in six different crop mixes used for game fields affected the biomass production, biomass consumption and biological diversity at the Koberg estate in southwestern Sweden. Six experimental fields were used and each field contained six plots, approximately 1500 m2 each, that was sown with a different crop mix. The crop mixes ranged from a pure grass mix (A), 70 % grass and 30 % leguminous plants (B), 53 % grass, 21 % leguminous plants and 26 % other herbs (C), 100 % leguminous plants (D) to the most complex mixes constituting of 91 % leguminous plants and 9 % other herbs (E) and 87 % leguminous plants and 13 % other herbs (F). The fields were cut weekly during the summer in 2010, to estimate weekly biomass production.
Inventory and evaluation of Nairobi Animal Orphanage : focusing on Congo Grey African parrot, cheetah and rehabilitation
This BSc thesis is a part of an initial step of a collaboration between Skansen and Kenyan Wildlife Service (KWS) and constitutes of an inventory of the Nairobi Animal Orphanage run by KWS. Animal Orphanage takes care of orphaned and injured animals arriving from throughout Kenya. The project started out as a refuge and as a temporary place for animals in need of care and help. With time it has evolved to an establishment that resembles and functions more like an animal zoo. The aim of this inventory is to focus on how the biological needs of Congo grey parrots ( Psittacus erithacus erithacus) and cheetahs (Acinonyx jubatus) are met, in terms of management and housing.
Är BIM lönsamt vid projektering av ett småhus?
This report brings up the question - ?Is BIM profitable when planning a single-family home??.The methodology for finding the answer to this question is firstly to state the definitions of BIMand the company that is projecting by using the BIM-model. The answer is then obtained byanalyses of the factors of profitability with respect to: time, opportunity of revision, problemvisualization, preference adjustments and energy. A BIM-model has been made simultaneously asthe writing has proceeded to get a perception of how a BIM-model really matters for the analysis.The analysis shows that the answer for the question depends on further factors. The factors thatare mostly discussed are the company?s intentions and the complexity of the house.
Leopardens underarter och konflikten med människan
Leopard (Panthera pardus) räknas som ett av de fem stora kattdjuren inom släktet Panthera, och är den art av de vilda kattdjuren som har störst geografisk spridning i världen. Med avstånd som sträcker sig från Afrika i väst och delar av Ryssland i öst, är det inte så konstigt att flera skilda underarter uppstått. Som helhet är arten leopard klassad som nära hotad av IUCN, International Union for Conservation of Nature, men flera av dess nio underarter är starkt eller akut hotade. Genom litteraturstudier och statusrapporter från IUCN ges i denna undersökning en kort sammanfattning av hur distributionen av leopardens underarter ser ut i världen, samt vad som utgör deras största hot mot en fortsatt överlevnad. Generellt sett har leoparden många egenskaper som talar för en positiv framtid.
"Det är bara för oss att gilla läget" : livsmedelskagstiftning och livsmedelskontroll ur verksamhetsutövarens perspektiv : en kvalitativ studie genomförd i kommunala skolkök
This BSc thesis is a part of an initial step of a collaboration between Skansen and Kenyan Wildlife Service (KWS) and constitutes of an inventory of the Nairobi Animal Orphanage run by KWS. Animal Orphanage takes care of orphaned and injured animals arriving from throughout Kenya. The project started out as a refuge and as a temporary place for animals in need of care and help. With time it has evolved to an establishment that resembles and functions more like an animal zoo. The aim of this inventory is to focus on how the biological needs of Congo grey parrots ( Psittacus erithacus erithacus) and cheetahs (Acinonyx jubatus) are met, in terms of management and housing.
Valet är ditt - Konsumentbeslut baserade på sekventiell produktinformation
Research has shown that our numbers of choices are constantly increasing. In this paper, we investigate the choice-making process further with regard to satisfaction, recommendation propensity, confidence, and preference. The study focuses on two fitness clubs where product information is provided sequential to the participant. We examine if consumers who maintain their choice tend to be more satisfied with their choice and more willing to recommend the choice to a friend. If they are, why is this? We found that the participants who changed their choice claimed to be less satisfied and had less propensity to recommend the choice to a friend.
?R KUSTN?RA ALK?RR I BOHUSL?N ETT ?BLUE CARBON? HABITAT?
In coastal wetlands carbon/organic matter can be stored for long periods of time thanks to, among other things, the presence of water which slows down the decomposition. Because of this, restauration and management of such habitats have the potential to decrease the emission of greenhouse gasses and help mitigate climate. Internationally these environments are called ?blue carbon? ecosystems. In Sweden, alder (Alnus glutinosa and Alnus incanata) covered wetlands along the coast is a nature type that potentially could function as a ?blue carbon? habitat.
Drevjaktens sekundära effekter på dovhinden (Dama dama)
I största delen av Europa är det jakt utförd av människan som är den huvudsakliga dödsorsaken för hjortdjur som till exempel dovhjort, kronhjort och älg. Men jakt kan även ha andra negativa effekter på djur än de dödliga. Forskning har visat att jakt kan påverka hjortdjurs beteende och hur de använder sitt hemområde där man bland annat sett att hjortar ökar storleken på sitt hemområde, vistas mer i skogsområden än öppna områden samt lämnar och undviker områden där det förekommer mänsklig aktivitet. Varför detta kan vara negativt för hjortar är för att det är viktigt att de har god kunskap om området de vistas i då det gör det möjligt för dem att hitta bra föda samt skydd vid faror. Detta har de i sina normala hemområden och om de tvingas lämna dessa kan det leda till negativa konsekvenser.
I detta arbete, som genomfördes genom ett samarbete med Grimsö forskningsstation, Sveriges lantbruksuniversitet, undersöktes huruvida dovhinden (Dama dama) påverkas av jakt.
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.
Östra Afrikas kustnära skogsområde : en viktig region för biologisk mångfald
Längs Afrikas östkust från Somalia till Mozambique löper en tropisk skogsremsa som uppvisar en fantastisk variation i artsammansättning och utgör habitat för en mängd endemiska arter. Regionen är så unik att både Conservation International och WWF anser att den bör prioriteras för bevarande insatser.
De kustnära skogarna erbjuder också en mängd tjänster som många människor är beroende av. Skog förhindrar jorderosion, är hem åt pollinatorer och lagrar upp koldioxid. Mangroveskogar stabiliserar kustområden och de för lokalbefolkningen heliga Kaya-skogarna i södra Kenya erbjuder ett kulturellt värde.
Den stora befolkningen som lever i området gör att mänsklig påverkan utgör ett betydande hot mot regionens biologiska mångfald. Det största hotet utgör det växande jordbruket som ska försörja en allt större befolkning.
En uppföljning av floran i Enköpings vattenpark : kan anlagda våtmarker med vattenrening som huvudsyfte bidra till naturvård och biologisk mångfald?
Wetlands are important ecosystems and form habitat for both common and threatened species. In Sweden, as well in many other places on earth, there is a lack of wetlands. There is an expressed will to adjust this lack through restoration of wetlands with reduced function and through construction of new wetlands. Follow-ups and evaluations are important steps to optimize these actions. The wetland Vattenparken was constructed 1999 ? 2000 for treatment of surface water.
Jordlöparfaunan i bestånd av contortatall (Pinus contorta) och svensk tall (P. sylvestris) 1987 och 2010
In the 1970´s the North American lodgepole pine (Pinus contorta) was introduced to Sweden in large scale. The lodgepole pine affects its new environment different from Scots pine (P. sylvestris), leading to a change in biological diversity.
Forestry today affects the ground beetle fauna (Carabidae). Habitat specialists associated with older forests are first affected. When the canopy closes again after a clear-cutting species that prefer open habitats reduces and those who prefer mature/closed forests increase.
In this study we compare differences in diversity and community structure of ground beetles in stands of lodgepole pine and Scots pine.
Renar och klövvilt på järnvägar : en studie i järnvägars effekter på ren, älg och rådjur i norra och mellersta Sverige under 2005
Roads and railroads have significant impact on the surrounding landscape and the wildlife living in it. This study aims to provide an overview of the effects caused by railways to reindeer, roe deer and moose in Sweden in order to make more detailed assessments within this topic in the future. The method used is a study of literature on the subject and a synthesis of databases with information about wildlife mortalities, traffic intensity and fences in the study area; northern and central Sweden. The databases were used to compile digital maps using ArcGIS.
Infrastructure brings change to the surrounding landscape and its function as habitat for wildlife. Railroads cause barrier effects such as fragmentation, wildlife mortality, loss of habitat and loss of connectivity.
Habitat preferences and reproductive success forthe threatened longhorn beetle Plagionotusdetritus
Plagionotus detritus is a threatend longhorn beetle that only exists at one site in Sweden. It is saproxylic and depending on recently dead coarse oak wood for its larval development. Trees at Djurgården, Stockholm that have been colonized by Plagionotus detritus has been studied to find out the Habitat preferences of the species and to see what affects the density of beetles in a tree. The bark of some trees and wood from the breeding project at Nordens Ark has also been studied to find out what affects the species reproductive success. The reproductive success was measured in two ways, the larval mortality and the size of the hatching holes.
Betydelsen av skogens ålder och förekomst av lavar för renars val av vinterbetesområde :
This is a study on winter groups, ?siida?, of semi-domesticated mountain-migrating reindeers that move to lichen pastures in the lowland boreal forests during winter. The aim of the study was to determine reindeer habitat use in their winter ranges in a managed forest landscape. The reindeers use of three different types of forests was determined, 1) 100-130 year old, 2) 20-40 year old forest and 3) clear-cut areas. All sites were dominated by Scots pine, Pinus sylvestris, and had the same types of ground vegetation.