Search for dissertations about: "Visual ecology"

Showing result 21 - 25 of 41 swedish dissertations containing the words Visual ecology.

  2. 21. Defence on Demand : A physiological perspective on phenotypic plasticity in anti-predator traits

    Author : Jerker Vinterstare; Enhet akvatisk ekologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Phenotypic plasticity; inducible defences; stress physiology; cortisol; immune function; trade-offs; sexual dimorphism; crucian carp; visual ecology; predator-prey interactions; POMC pro-opiomelanocortin ; colour change; eco-immunology; Anti-predator defences; Inducible morphological defence; Phenotypic plasticity; Stress physiology; Cortisol; Immune function; Crucian carp; Predator-prey interactions; Trade-offs; Sexual dimorphism; POMC; Pro-opiomelanocortin; Visual ecology; Eye evolution; Melanin; Eco-immunology; Pace-of-life; Behavioural plasticity;

    Abstract : Almost all species face some degree of predation risk, and, hence, evolution has produced a plethora of anti-predator defences. However, anti-predator strategies require resources, and the prevailing risk of becoming prey is influenced by many factors and rarely constant across time and space. READ MORE

  4. 22. Emergency visualized : exploring visual technology for paramedic-physician collaboration in emergency care

    Author : Hanna Maurin Söderholm; Högskolan i Borås; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; 3D video; emergency care; e-health; paramedic; collaboration; collaborative work; computer supported cooperative work; CSCW; information ecology; information practice; pre-hospital care; sociotechnical; telemedicine; telepresence; video communication; visual technology; Library and Information Science; Biblioteks- och informationsvetenskap;

    Abstract : This thesis explores the potential of visual information and communication technologies (ICTs) for collaboration in emergency care. The thesis consists of four studies exploring future technology, 3D telepresence technology for medical consultation (3DMC), from several different methodological and analytical perspectives. READ MORE

  5. 23. Bird Vision: Spatial acuity and colour discrimination in bright and dim light

    Author : Olle Lind; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Animal vision; Visual ecology; Colour vision; Spatial acuity; Spatial contrast sensitivity; Dim light; Visual modelling; Behavioural experiments; Birds; Psittaciformes;

    Abstract : Birds use vision to guide navigation, foraging and mate choice, and studies of the limitations in bird visual perception are most helpful for the understanding of bird ecology. Here, I present four studies of bird vision in bright and dim light. READ MORE

  6. 24. The visual ecology of bees - Tales of diverse eyes and behaviours

    Author : Pierre Tichit; Funktionell zoologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Animal behaviour; Arthropods; Bumblebees; Compound Eyes; Crystalline cones; Flight control; Image analysis; Landing; Sensory ecology; Stingless bees; Vision; X-ray microtomography;

    Abstract : The buzzing flight of bees is a popular summer hit. Yet, outside of a few familiar species of honeybees and bumblebees, these fantastic little creatures are still mostly unknown. With about twenty-five thousand species, bees are a very diverse group. They can be found in drastically different habitats. READ MORE

  7. 25. Spatial Vision in Birds: Anatomical investigation of spatial resolving power

    Author : Mindaugas Mitkus; Funktionell zoologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Raptors; Seabirds; Parrots; Birds; Double cones; Development; Retinal ganglion cells; Visual spatial resolution; Visual ecology; Vision;

    Abstract : Avian eyes are big both in relative and absolute terms, thus the importance of vision to birds is obvious. Even though the general eye plan is rather conservative throughout the group, there is a great variation in visual capabilities. READ MORE