Sökning: "Optimal Foraging Theory"
Visar resultat 1 - 5 av 7 uppsatser innehållade orden Optimal Foraging Theory.
1. Diving Deep: Seabird foraging tactics and local prey field
Master-uppsats, SLU/Dept. Of Aquatic ResourcesSammanfattning : Foragers in patchy environments need to decide what patches to use and how to allocate their time between them. Optimal foraging theory describes these choices through the relationship between energy expenditure and energy gain. LÄS MER
2. En gropkeramisk rundtur på Gotland : GIS-analyser av gropkeramiska lokaler på Gotland och osteologiska bedömningar av resursutnyttjande
Master-uppsats, Uppsala universitet/Institutionen för arkeologi och antik historiaSammanfattning : The aim of this master thesis is to expand on the understanding of the resource utilisation on the 19 Gotlandic Pitted Ware Culture sites: Ajvide, Alvena, Fridtorp, Grausne, Gullrum,Gumbalde, Hau, Hemmor, Hoburgen, Ire, Kinner/Tjauls, Rangvide, Barshalder, Stenstugu,Stora Förvar, Sudergårds II, Visby, Västerbjers and Västerbys. The study utilises theoretical frameworks such as Site Catchment Analysis, Site Territorial Analysis and Optimal ForagingTheory and is based on two main questions: Which animals did the diet on each site consist of? And are there any apparent connections between diet and topography/environment? To answer these questions, osteological records have been studied to get an idea of the animal food resources utilised on each site. LÄS MER
3. Can the native shore crabs (Carcinus maenas) become a barrier to the invasion of the round goby (Neogobius melanostomus) in Öresund, southern Baltic Sea?
Master-uppsats, Lunds universitet/Examensarbeten i biologiSammanfattning : The round goby (Neogobius melanostomus) is a non-indigenous species to the Baltic Sea that has drawn the attention of many researchers in the last decade due to its rapid spreading and its impact on the local fauna. With recent concerns about the dispersal of the round goby towards the North Sea, the aim of this study was to determine if the native shore crab could compete with the invaders and prevent their advance. LÄS MER
4. Den erfarne ripjägaren : Optimalt födosök hos homo sapiens?
Kandidat-uppsats, Institutionen för ekologi, miljö och geovetenskapSammanfattning : The purpose of this study is to examine some factors that make a human grouse hunter to prolong and increase its hunting effort. The theory of optimal foraging is used for explaining their behavior. The data of this study is collected from a web-based inquiry from 2007 answered by grouse hunters in Sweden. LÄS MER
5. An Optimal Foraging Perspective on Early Holocene Human Prey Choice on Gotland : Affluence or Starvation?
Magister-uppsats, Institutionen för kultur, energi och miljöSammanfattning : The Optimal Foraging Theory, rooted in the processual archaeology, uses a measuring methodology where the foraging strategy that gives the highest payoff measured as the highest ratio of energy gain per time unit is analysed (Mac Arthur & Pianca 1966, Emlen 1966). The theory is a branch of evolutionary ecology why much attention is paid to the interdependence of humans and preys and environmental conditions caused by climatologically and geographical changes or by overexploitation or other changes caused by humans. LÄS MER
