Search for dissertations about: "spatial variation"

Showing result 1 - 5 of 302 swedish dissertations containing the words spatial variation.

  1. 1. Spatial variation : Stachastic models and their application to some problems in forest surveys and other sampling investigations

    University dissertation from Stockholm : Stockholm University

    Author : Bertil Matérn; Stockholms universitet.; [1960]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : .... READ MORE

  2. 2. 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

  3. 3. The spatial structure of genetic and morphometric variation in Corylus avellana (Betulaceae): pattern and scale

    University dissertation from Helena Persson, Department of Ecology, Systematic Botany, Sölvegatan 37, SE-223 62 Lund, Sweden

    Author : Helena Persson; Lund University.; Lunds universitet.; [2002]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; phytogeography; chemotaxonomy. Physiology of nonvascular plants; Systematisk botanik; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .; taxonomy; morphology; Systematic botany; Öland; clonal structure; marginal and central populations; image analysis; aerial photographs; morphometric variation; allozymes; Corylus avellana; genetic variation;

    Abstract : In the present thesis, I investigated the spatial structure of genetic and morphometric variation in the widespread wind-pollinated shrub Corylus avellana (L.) Betulaceae, hazel, and related the variation to geographic distribution and different spatial scales. READ MORE

  4. 4. Spatial distribution and conservation planning of seabed biological diversity

    University dissertation from Helena Persson, Department of Ecology, Systematic Botany, Sölvegatan 37, SE-223 62 Lund, Sweden

    Author : Genoveva Gonzalez-Mirelis; Göteborgs universitet.; Gothenburg University.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Spatial autocorrelation; ecological classifications; distribution modelling; biotopes; conservation planning; biodiversity surrogates; GIS; spatial ecology; benthos; fjord;

    Abstract : Knowledge of spatial patterns of biota has become a commodity for conservation practitioners and spatial ecologists alike. This type of information enables the identification of representative and unique biological features (at some nominal scale) which itself constitutes the application par excellence of knowledge of biodiversity distribution as it relates to the design of reserve networks and the realization of spatial planning. READ MORE

  5. 5. Context dependency of plant – animal interactions

    University dissertation from Stockholm : Department of Ecology, Environment and Plant Sciences, Stockholm University

    Author : Malin A. E. König; Stockholms universitet.; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Anthocharis cardamines; attack intensity; Cardamine pratensis; cytotype; herbivory; larval fitness; oviposition; phenology; plant-animal interactions; plant resistance; plant tolerance; polyploidy; spatial variation; trait variation; Plant Ecology; växtekologi;

    Abstract : The strength and direction of interactions between organisms vary spatially across the landscape. Traditionally, the focus has been on how trait variation affects the interactions between species. However, differences in abiotic and biotic environmental factors may also alter the distribution, phenology and behavior of the interacting species. READ MORE