Essays about: "wing morphology"

Found 5 essays containing the words wing morphology.

  1. 1. The perfect wing, The perfect trade-off? : What implements the main selection pressure on wing morphology?

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Emme MacDonald; [2023]
    Keywords : Bird; wing morphology; migration; habitat; aspect ratio; wing loading;

    Abstract : Selection pressure is a constant force in evolution, pushing birds and their wings towards an optimal shape and structure, were increasing performance, and minimizing the costs is central. But even though the science of aerodynamics can provide calculations of the optimal construction for the wing in different situations this rarely directly correspond to what is observed in nature. READ MORE

  3. 2. People, Class, or People as Class? : The Swedish Left, the Jews, and the state of Israel post-1967

    University essay from Uppsala universitet/Historiska institutionen

    Author : Alexander Johansson; [2022]
    Keywords : People-as-class; people; class; antizionism; left-wing antisemitism; morphology; socialism; communism; nationalism; Israeli-Palestinian conflict; post-1967;

    Abstract : This study is an analytical investigation of the usage of the concept “people” and its relation to “class” in the Swedish left-wing antizionist repertoire post-1967. Relying on a critical Marxist understanding of antisemitism and nationalism, the study attempts to understand how and explain how the political left reproduced the antisemitic conspiracist structure of the “powerful Jews” through anti-imperialist nationalism. READ MORE

  4. 3. Effects of diversified cropping on arthropod communities

    University essay from SLU/Dept. of Ecology

    Author : Eira Eksvärd; [2022]
    Keywords : carabids; spiders; traits; organic amendments; ley legacy effects;

    Abstract : Även intensiva moderna jordbruk är beroende av ekosystemtjänster som organismer bidrar med såsom biologisk bekämpning av skadedjur. Effekten av biodiversitet på ekosystemprocesser förklaras inte i tillräcklig grad av taxonomisk mångfald, utan beror snarare på mångfalden av funktionella egenskaper bland arterna. READ MORE

  5. 4. Time Constraint and Genetic (Phenotypic) Variation in Wing Shape in a Damselfly Along a Latitudinal Gradient

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Meagan Tunon; [2020]
    Keywords : Damselfly; time constraint; wing shape; morphology; climate change;

    Abstract : This degree project examined the effect of time constraint on wing shape and phenotypic variation in wing shape along a latitudinal gradient in the damselfly species Lestes sponsa. Fore and hind wings from individuals originating from three different latitudes: North (66°N), Central (59°N) and South (54°N) Europe were treated with their native temperature and photoperiod. READ MORE

  6. 5. Morphological and functional differences between rhamphorhynchoid and pterodactyloid pterosaurs with emphasis on flight

    University essay from Lunds universitet/Geologiska institutionen

    Author : Elisabeth Einarsson; [2004]
    Keywords : pterosaurs; Rhamphorhynchoidea; Pterodactyloidea; morphology; wings; flight; aerodynamics; air sacs; flygödlor; morfologi; vingar; flygning; aerodynamik; luftsäckar; Earth and Environmental Sciences;

    Abstract : To explain how the morphological differences between Rhamphorhynchoidea and Pterodactyloidea affect flight performances and life styles wings and claws of pterosaur fossils from collections in Uppsala and Munich have been measured. The measured specimens are from Jurassic limestones and shales in Solnhofen, Eichstätt and Holzmaden and include Dorygnathus, Campylognathoides, Rhamphorhynchus, Anurognathus, Pterodactylus, Germanodactylus and Gallodactylus. READ MORE