Sökning: "Proportional Dominance Effect"

Hittade 2 uppsatser innehållade orden Proportional Dominance Effect.

  1. 1. Importance of bumble bee community evenness for crop pollination : a simulation analysis of Swedish red clover seed production

    Magister-uppsats, SLU/Dept. of Ecology

    Författare :Vivek Babu; [2018]
    Nyckelord :bumble bee; Bombus; community; evenness; biodiversity-ecosystem function; diversity-stability; diversity-productivity; overyielding; productivity; stability; biodiversity; selection effect; species asynchrony; portfolio effect;

    Sammanfattning : The red clover seed production systems are dependent on pollinators for increase in red clover seed yield and its stability. When compared to domesticated honey bees, the wild bumble bees are highly efficient in pollinating the red clover crop due to its relatively longer tongue length. Longer dependence on single pollinator species i.e. LÄS MER

  3. 2. Förväntade emotioner vid hjälpande och inte-hjälpande: Olika motiv bakom identifierbarseffekten och proportiondominanseffekten?

    Kandidat-uppsats, Lunds universitet/Institutionen för psykologi

    Författare :Ellinor Ottosson Cederflycht; Oliver Thomson; [2013]
    Nyckelord :Help motivation; Identified Victim Effect; Proportional Dominance Effect; expected guilt; expected positive emotions.; Social Sciences;

    Sammanfattning : The main purpose for this study has been to try to investigate which of our emotions that affect and control our motivational behaviour when it comes to helping people in need. Two main hypotheses were formed by the researchers; if people are told to imagine not helping an identified victim they will presume to feel more guilt than they would have done if presuming not helping a statistical victim and when people are told to imagine helping a group of people that makes up a high proportion of the total population they will presume to feel more positive emotions then they would have presumed to feel helping a group of people that makes up a low proportion of the total population. LÄS MER