Search for dissertations about: "Latitude"

Showing result 21 - 25 of 195 swedish dissertations containing the word Latitude.

  2. 21. Impact of climate variability on dynamic groundwater storage in mid- to high latitude countries

    Author : Michelle Nygren; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; climate change; time series analysis; groundwater statistics; Sweden; drought; cold region hydrogeology; groundwater memory;

    Abstract : Climate change will alter the hydrological cycle, potentially changing dynamic groundwater storage and increasing groundwater drought risk. Climate influences groundwater storage directly via changes in groundwater recharge, but groundwater drought responsiveness further depends on groundwater system characteristics. READ MORE

  4. 22. The role of high-latitude circulation and moisture transport in Arctic climate variability and change during winter

    Author : Cian Woods; Rodrigo Caballero; Gunilla Svensson; Timo Vihma; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; atmosfärvetenskap och oceanografi; Atmospheric Sciences and Oceanography;

    Abstract : This thesis examines the connections between atmospheric circulation in the high-latitudes, northward moisture transport, and Arctic climate variability and change during winter. An event based approach is taken by objectively defining phenomena termed “moisture intrusions” -- filamentary flows of anomalously moist air which originate at 70°N and cross the entire Arctic basin. READ MORE

  5. 23. Vitamin D deficiency in Northern Sweden : a cross-sectional study of an immigrant population at latitude 63° N, including an open partially randomized, controlled trial studying the effect of supplementation with different doses of cholecalciferol

    Author : Lena Granlund; Eva Fhärm; Christer Andersson; Marie Lindkvist; Anna Ramnemark; Ingrid B Bergström; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; vitamin D deficiency; 25-hydroxyvitamin D; cross-sectional study; immigrant; muscle strength; grip strength; anxiety; depression; health related quality of life; clinical trial; cholecalciferol; family medicine; allmänmedicin;

    Abstract : Background: Vitamin D is a prohormone that plays a key role in the calcium and phosphate balance and has physiological functions throughout the entire body. Vitamin D is supplied by exposure to ultraviolet light or by food. The prevalence of vitamin D deficiency in immigrants in Northern Sweden was unknown. READ MORE

  6. 24. Adaptation Along Environmental Gradients: an Evaluation of Physiological Mechanisms and Ecological Constraints

    Author : Beatrice Lindgren; Anssi Laurila; Jacob Höglund; Svante Winberg; Andrew Sih; Uppsala universitet; []
    Keywords : Biology; Rana temporaria; latitudinal clines; growth rate; growth efficiency; SMR; predation; competition; trade-off; Biologi;

    Abstract : For ectotherms living in seasonal environments, time available for development and growth is often constrained by the length of the growth season. Declining season length towards higher latitudes often select for latitudinal clines in development and growth rates, exhibiting increasing growth and developmental rates towards the north. READ MORE

  7. 25. Physiological and Environmental Processes Influencing Growth Strategies in Amphibian Larvae

    Author : Emma Dahl; Anssi Laurila; Felicity Huntingford; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; growth; growth strategies; amphibians; latitudinal gradient; growth hormone GH ; corticosterone CORT ; breeding phenology; compensatory growth; compensatory strategies; Biology; Biologi; Biologi med inriktning mot populationsbiologi; Biology with specialization in Population Biology;

    Abstract : Cost and benefits of high individual growth rates are likely to vary across different environments leading to geographic differentiation in growth strategies. In ectotherms, habitats constrained by short growing seasons favour rapid growth and development leading to adaptive latitudinal clines in these traits. READ MORE