Search for dissertations about: "Seasonal variation"

Showing result 1 - 5 of 163 swedish dissertations containing the words Seasonal variation.

  1. 1. Seasonal variation and landscape regulation of dissolved organic carbon concentrations and character in Swedish boreal streams

    University dissertation from Umeå : Ekologi, miljö och geovetenskap

    Author : Anneli Ågren; Umeå universitet.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; DOC; temporal variation; spatial variation; seasonal variation; forested catchment; wetland catchment; catchment characteristics; DOC characteristics; absorbance-ratio; bioavailability.; NATURAL SCIENCES Earth sciences Exogenous earth sciences Physical geography; NATURVETENSKAP Geovetenskap Exogen geovetenskap Naturgeografi;

    Abstract : The seasonal variation and landscape regulation of dissolved organic carbon (DOC) concentrations in streams have been studied in two watersheds in the boreal zone. The seasonal variation was found to be highly correlated to variations in runoff. An increase in runoff was always accompanied with an increase in DOC concentration. READ MORE

  2. 2. Seasonal variation of road runoff in cold climate

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Camilla Westerlund; Luleå tekniska universitet.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VA-teknik; Urban Water Engineering;

    Abstract : The main objective of this thesis was to characterize and study the behaviour and transport of pollutants, i.e., suspended solids, particles and heavy metals, in road runoff from a small urban catchment during snowmelt and rainfall. READ MORE

  3. 3. Spring Phenology of Butterflies The role of seasonal variation in life-cycle regulation

    University dissertation from Stockholm : Department of Zoology, Stockholm University

    Author : Sandra Stålhandske; Stockholms universitet.; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Phenology; Life cycle regulation; Phenotypic plasticity; Local adaptation; Butterflies; Diapause; Pupal development; Anthocharis cardamines; Herbivore – host plant interaction; etologi; Ethology;

    Abstract : Animals and plants in temperate regions must adapt their life cycle to pronounced seasonal variation. The research effort that has gone into studying these cyclical life history events, or phenological traits, has increased greatly in recent decades. READ MORE

  4. 4. Seasonal variation in pine forest evaporation and canopy conductance

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Anders Lindroth; Uppsala universitet.; [1984]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  5. 5. Radar Measurements of Temporal Variation in a Boreal Forest

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Albert Monteith; [2018]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; remote sensing; temporal variation; tomography; antenna array; temporal coherence; Synthetic aperture radar SAR ;

    Abstract : Synthetic aperture radar (SAR) on a satellite platform is a suitable technique for all-weather global monitoring of forest parameters such as biomass. This is important for increasing the accuracy of the global terrestrial carbon flux, the largest uncertainty in our current understanding of the Earth’s carbon cycle. READ MORE