Search for dissertations about: "plant quality"

Showing result 1 - 5 of 242 swedish dissertations containing the words plant quality.

  1. 1. Herbivores influence nutrient cycling and plant nutrient uptake insights from tundra ecosystems

    University dissertation from Umeå : Umeå University

    Author : Hélène Barthelemy; Umeå universitet.; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Reindeer grazing; large herbivores; nutrient cycling; plant nutrient uptake; soil nutrient availability; arctic plant ecology; soil microbial communities; 15N stable isotopes; plant-soil interactions; plant quality; dung and urine.; Environmental Science; miljövetenskap; biology; biologi;

    Abstract : Reindeer appear to have strong positive effects on plant productivity and nutrient cycling in strongly nutrient-limited ecosystems. While the direct effects of grazing on vegetation composition have been intensively studied, much less is known about the indirect effect of grazing on plant-soil interactions. READ MORE

  2. 2. Information Flow and Product Quality in Human Based Assembly

    University dissertation from Mechanical and Manufacturing Engineering, Loughborough University

    Author : Gunnar Bäckstrand; Högskolan i Skövde.; Högskolan i Skövde.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; attention; information system; human factors; manual assembly; quality; productivity; Teknik; Technology;

    Abstract : Information is an important part of the manual assembly process. Information provides the user with the means to fulfil assembly tasks so that the right quality as well as high productivity are accomplished. READ MORE

  3. 3. PLANT-BACTERIAL AND PLANT-FUNGAL COMPETITION FOR NITROGEN AND PHOSPHORUS

    University dissertation from Katarina Månsson, Department of Ecology (Plant Ecology and Systematics), Ecology Building, Lund University, 223 62 Lund

    Author : Katarina Månsson; Lunds universitet.; Lund University.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Växtekologi; Amino acid; 15N; Soil C:N ratio; Plant ecology; Soil drying-rewetting;

    Abstract : Popular Abstract in Swedish Är det möjligt att det pågår en hård kamp under våra fötter när vi tar en promenad i den Skånska lövskogen? Oftast tänker man på ett positivt förhållande mellan växter och marken's bakterier och svampar, där den autotrofa växten omvandlar luften's kol (C), i form av koldioxid, till organiskt C som därigenom blir tillgängligt för mikroorganismerna. Mikroorganismerna bryter i sin tur ner döda växter och djur och frigör på detta sätt viktiga näringsämnen som funnit's bundna i komplexa strukturer och som då blir tillgängliga för växten. READ MORE

  4. 4. Intramolecular isotope analysis reveals plant ecophysiological signals covering multiple timescales

    University dissertation from Umeå : Umeå Universitet

    Author : Thomas Wieloch; Umeå universitet.; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NMR spectroscopy; tree ring; isotope ratio; isotope effect; intramolecular 13C 12C signal; carbon allocation; acclimation; plant performance; climate reconstruction; plant ecophysiology;

    Abstract : Our societies' wellbeing relies on stable and healthy environments. However, our current lifestyles, growth-oriented economic policies and the population explosion are leading to potentially catastrophic degradation of ecosystems and progressive disruption of food chains. READ MORE

  5. 5. Remote sensing in optically complex waters water quality assessment using MERIS data

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

    Author : José M. Beltrán-Abaunza; Stockholms universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Ocean Colour; MERIS; Baltic Sea; Bio-optics; water quality; Chlorophyll; Turbidity; SPM; Himmerfjärden; Remote Sensing; Marine Ecology; marin ekologi;

    Abstract : This PhD study focusses on the use of MEdium Resolution Imaging Spectrometer (MERIS) data for reliable and quantitative water-quality assessment of optically-complex waters (lake, brackish and coastal waters). The thesis is divided into two parts: A. READ MORE