Search for dissertations about: "media ecology"

Showing result 1 - 5 of 41 swedish dissertations containing the words media ecology.

  1. 1. Avian thermoregulation across age and seasons

    University dissertation from Lunds universitet, Media-Tryck

    Author : Fredrik Andreasson; Lund University.; Lunds universitet.; [2019-12-18]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ambient temperature; body temperature; Cyanistes caeruleus; energy expenditure; hypothermia; life-history theory; metabolic rate; Parus major; thermoregulation; trade-off; winter ecology;

    Abstract : Animals constantly need to relate to prevailing environmental conditions and regulate their body temperature accordingly. Body temperature regulation in birds and mammals is inherently linked to energy expenditure and, thus, thermoregulation is a physiological mechanism that could trade-off with other costly processes, with potential long-term fitness consequences. READ MORE

  2. 2. The significance of sexuality and cyst formation in the life-cycles of four marine dinoflagellate species

    University dissertation from Lund University

    Author : Rosa Figueroa; Lund University.; Lunds universitet.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; cyst; Hydrobiology; akvatisk ekologi; marine biology; aquatic ecology; limnology; sexuality.; meiosis; Lingulodinium polyedrum; life-cyle; limnologi; Marinbiologi; Gymnodinium nolleri; Gymnodinium catenatum; Alexandrium catenella; dinoflagellates;

    Abstract : Sexuality and cyst formation were studied in the marine dinoflagellate species Gymnodinium catenatum Graham, Gymnodinium nolleri Ellegaard ? Moestrup, Alexandrium catenella (Whedon et Kofoid) Balech, and Lingulodinium polyedrum (Stein) Dodge. The study included the morphological characterization of sexual stages and processes, the time and description of meiosis, the study of the length and regulation of the mandatory dormancy period of resting cysts, and the relationships among parental strains and cyst progeny at phenotypic and molecular levels. READ MORE

  3. 3. Towards a Pluralistic Epistemology: Understanding the Future of Human-Technology Interactions in Shipping

    University dissertation from Lund University

    Author : Yemao Man; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Human Factors; Decision Making; Automation; Human-Technology Interaction; Psychology; Human Errors; Multidisciplinary; Sociotechnical System; Human-Computer Interaction; Ecology; Epistemological Pluralism; Situation Awareness; Situated Learning; Knowledge Management; Complexity; Maritime; Distributed Cognition; Sociology; Activity Theory;

    Abstract : The rapid advance of technologies is revolutionizing the way people work and transforming society into a digital world. In the shipping domain, many innovative technical systems have been designed and developed in the past decades, aiming to enable the maritime users to achieve the goal of safety, efficiency and effectiveness. READ MORE

  4. 4. Zooplankton response to cyanotoxins

    University dissertation from Limnology, Department of Ecology, Lund University

    Author : Susanne Gustafsson; Lund University.; Lunds universitet.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Naturvetenskap; Natural science; cyanotoxins; maternal effects; algal toxins; zooplankton; tolerance; cyanobacteria;

    Abstract : Mass development of cyanobacteria (blue-green algae) is common in many lakes and coastal waters worldwide as a result of an increased nutrient loading. These blooms of cyanobacteria are undesirable for several reasons; thick mats of algae and unpleasant odour reduces the recreational values, bad taste reduces the quality of drinking water and the potent toxins produced by some species of cyanobacteria endanger human health. READ MORE

  5. 5. Ecology of zooplankton communities: climate, dormancy, and benthic-pelagic coupling

    University dissertation from Mikael Gyllström, Limnology, Ecology Building, S-223 62, Lund, Sweden

    Author : Mikael Gyllström; Lund University.; Lunds universitet.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Marinbiologi; limnologi; akvatisk ekologi; limnology; Hydrobiology; marine biology; aquatic ecology; phytoplankton; temporal stability; recruitment; seasonal succession; environmental cues; diapause; shallow lakes; predation; enrichment; climate; temperature;

    Abstract : This thesis describes how influences, such as top down and bottom up forces, shape zooplankton communities in shallow lakes. I have also extended the traditional food-web theory by investigating the effects of climate on total biomass, taxonomic composition, and temporal properties of zooplankton communities. READ MORE