Sökning: "visitor composition."

Hittade 2 avhandlingar innehållade orden visitor composition..

1. 1. Individual Preferences, Choices, and Risk Perceptions - survey based evidence

   Författare :Elina Lampi; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; administrators; aircraft; airports; birth order; choice experiment; citizens; environmental policy; female infertility; free entrance; general risk; health care; information; media; museum; natural experiment; noise; only-child; optimistic bias; personal risk; positional concern; relative income; siblings; stated preferences; visitor composition.;

   Sammanfattning : Paper 1 investigates how birth order and having siblings affect positional concerns in terms of success at work and of income. We find that only-children are the most positional, but that number of siblings increases the concern for their position among those who grew up together with siblings. LÄS MER

3. 2. The impact of forest on pest damage, pollinators and pollination services in an Ethiopian agricultural landscape

   Författare :Ulrika Samnegård; Kristoffer Hylander; Peter Hambäck; Sileshi Nemomissa; Jaboury Ghazoul; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; agroforestry; Apoidea; Coffea arabica; crop pests; Ethiopia; forest cover; landscape ecology; moist afromontane forests; pollination; species composition; tropical agriculture; Plant Ecology; växtekologi;

   Sammanfattning : The distribution of wild biodiversity in agroecosystems affect crop performance and yield in various ways. In this thesis I have studied the impact of wild biodiversity, in terms of trees and forest structures, on crop pests, pollinators and the pollination services provided in a heterogeneous landscape in southwestern Ethiopia. LÄS MER