Search for dissertations about: "savannah"

Showing result 1 - 5 of 6 swedish dissertations containing the word savannah.

  2. 1. Costs of foraging in a dry tropical environment

    Author : Mary Molokwu; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; foraging behavior; seasonality; predation risk; granivorous birds; food availability; water; temperature; savannah; dry tropics; energy; secondary compounds; diet selection;

    Abstract : This study evaluates the costs associated with foraging for birds in a savannah woodland area in central Nigeria. Specifically, it looks at the following questions: 1) how does seasonal variability in food and water availability affect the value of resources to birds in dry environments? 2) Does proximity to water affect foraging decisions? What implication will this have in the management of savannah birds? 3) Are tropical birds mostly affected by metabolic or predation costs? 4) What factors affect diet selection in birds and how? 5) How are birds adapted to hot dry environments? I carried out experiments in the field and in an aviary and provided artificial food patches, consisting of feeding trays with seeds mixed in sand or pebbles (in the aviary study). READ MORE

  4. 2. Global Savannah Phenology : Integrating Earth Observation, Ecosystem Modeling, and PhenoCams

    Author : Niklas Boke-Olén; BECC: Biodiversity and Ecosystem services in a Changing Climate; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Savannahs are land areas where grass and trees co-exists to create a landscape that is neither a grassland nor a forest. It is estimated that savannahs cover approximately one sixth of the global land surface. They also play an important role in the global carbon cycle due to their total size. READ MORE

  5. 3. Odor perception in three Coleoptera: molecule, receptor & neuron

    Author : Jonas Bengtsson; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : In this thesis, the sense of olfaction and its links to behavior was studied in the cetoniid chafers Pachnoda interrupta and P. marginata, and the bark beetle Ips typographus. P. interrupta is a pest on sorghum in Ethiopia, and I. READ MORE

  6. 4. Magnetic orientation in migratory birds

    Author : Rachel Muheim; Funktionell zoologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Animal ecology; Djurekologi; cue-conflict; clock-shift; cue calibration; geomagnetic field; high Arctic latitudes; Emlen funnel; magnetic compass; magnetoreception; navigation; migration; bird; orientation;

    Abstract : My thesis focuses on magnetic orientation in migratory birds, i.e. how they can perceive information from the Earth’s magnetic field and use it for orientation. READ MORE

  7. 5. Flannery O'Connor's View of the Modern Alienation from Sacramental Religion

    Author : Inger B Törnqvist; Centrum för teologi och religionsvetenskap; []
    Keywords : HUMANIORA; HUMANITIES; secular humanism; Social Darwinism; Progressivism; Southern literature; natural theology; Southern Protestant fundamentalism; “Americanism Debate“; modern gnosticism; gnostic; Jansenism; Neoscholasticism; American Catholicism; Sacramental religion; O’Connor; Joyce; psychology; sociology; History of the Christian church; Kristna kyrkans historia;

    Abstract : Mary Flannery O’Connor (1925-64) was born in Savannah, Georgia as the only child of the American Irish Catholics Edward Francis O’Connor, Jr. and Regina Cline O’Connor. In 1952 her first novel Wise Blood, in 1955 the short story collection A Good Man Is Hard to Find, and in 1960 her second novel, The Violent Bear It Away were published. READ MORE