Sökning: "FLIGHT MORPHOLOGY"

Visar resultat 1 - 5 av 16 avhandlingar innehållade orden FLIGHT MORPHOLOGY.

  1. 1. In the wake of a bird - Quantifying aerodynamic performance of avian flight

    Detta är en avhandling från Department of Biology, Lund University

    Författare :Marco Klein Heerenbrink; Lund University.; Lunds universitet.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; animal flight; flight performance; gliding; powered flight; wing morphology; aerodynamics; biomechanics; birds; jackdaw; Corvus monedula; wind tunnel; PIV;

    Sammanfattning : Flight is an expensive form of locomotion, but also offers the ability to travel great distances at relatively low cost. Birds have developed various adaptations for optimizing flight performance. The main aim of this thesis is to identify how morphological variables in birds affect aerodynamic drag and flight performance. LÄS MER

  2. 2. Aerodynamic performance in bat flight

    Detta är en avhandling från Lund University, Faculty of Science, Department of Biology

    Författare :Jonas Håkansson; Lund University.; Lunds universitet.; [2017-05]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Leptonycteris yerbabuenae; Plecotus auritus; Glossophaga soricina; PIV; aerodynamics; wing morphology; bats; wind tunnel; animal flight;

    Sammanfattning : Bats are the only mammals capable of flight, and they are the only animal flyers that are mammals. This thesis focuses on the latter of those facts, and investigates how bats fly, from an aerodynamic perspective. LÄS MER

  3. 3. Catching the invisible - aerodynamic tracks and kinematics of bat and bird flight

    Detta är en avhandling från Lund University, Faculty of Science, Department of Biology

    Författare :Marta Wolf; Lund University.; Lunds universitet.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; flight; bats; birds; kinematics; vertebrates; aerodynamics;

    Sammanfattning : This thesis is about the flight of vertebrates and the studies of different modes of flight. Flight has always fascinated mankind and this fascination gave inspiration for our attempts at flying. LÄS MER

  4. 4. Rarity in boreal stream: patterns, causes and consequences

    Detta är en avhandling från Lund University, Faculty of Science, Department of Biology

    Författare :Per-Ola Hoffsten; Umeå universitet.; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; Central Sweden; site occupancy; dispersal limitation; natural disturbances; recolonization; flight-morphology; metapopulation; habitat stability; spring specialists; Crunoecia irrorata; niche limitation; Isogenus nubecula; nestedness; longitudinal distribution; Ekologi; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology; NATURVETENSKAP Biologi Terrestisk; limnisk och marin ekologi; zooekologi; Animal Ecology;

    Sammanfattning : Patterns of site occupancy among boreal stream insects were studied in central Sweden with focus on sparsely distributed species and the role of dispersal and niche limitations.In the study of dispersal limitation, I found that effects of an extraordinarily harsh winter in small to medium-sized streams were strongest in sites located in small streams and far from lake outlets. LÄS MER

  5. 5. Fuel and fly: adaptations to endurance exercise in migrating birds

    Detta är en avhandling från Department of Ecology, Lund University

    Författare :Anders Kvist; Lund University.; Lunds universitet.; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; water balance; flight power; phenotypic flexibility; energy assimilation; basal metabolism; Animal ecology; Djurekologi;

    Sammanfattning : Birds on migration alternate between consuming fuel stores during flights and accumulating fuel stores during stopovers. This thesis highlights some of the ways in which migrating birds have adapted to the different demands of fuelling and flight. Most of the time on migration is spent at stopover sites accumulating fuel stores. LÄS MER