Search for dissertations about: "acidification"

Showing result 21 - 25 of 174 swedish dissertations containing the word acidification.

  2. 21. Organic acids and siderophores in forest soil solution

    Author : Sara J M Holmström; Mittuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; acidification; aluminium; ash treatment; canopy tree; column switching; coniferous; DOC; HPLC-MC; hydroxamate; liming; low molecular weight; organic acids; podzol; porous graphitic carbon; siderophore; soil solution; Chemistry; Kemi;

    Abstract : .... READ MORE

  4. 22. Population ecology of perch (Perca fluviatilis) in boreal lakes

    Author : Arne Linløkken; Eva Bergman; Larry Greenberg; Anders Hargeby; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; perch; growth; size; mortality; temperature; acidification; density; roach; competition; Biology; Biologi; Biology; Biologi;

    Abstract : I studied the effects of temperature, pH, competition and predation on Eurasian perch (Perca fluviatilis) in 30 lakes in Norway during 1981-2001. The study lakes were situated in two different areas in southern Norway; four lakes in Aust-Agder county in southernmost Norway were explored during 1981-1984 and 26 lakes in Hedmark county in south-eastern Norway were investigated during 1992-2001. READ MORE

  5. 23. DISCO - Drivers and Impacts of Coastal Ocean Acidification

    Author : Laurie Charrieau; Kvartärgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Coastal ocean acidification; Foraminifera; Environmental changes; pH; Salinity;

    Abstract : Ocean acidification, mainly attributed to the increasing anthropogenic CO2 in the atmosphere, is characterised by a lowering pH together with a shift in the sea water carbonate chemistry toward lower concentration of carbonate ions. On the coasts, where the environmental variability is high due to natural and human impacts, ocean acidification mainly affects the frequency, magnitude, and duration of lower pH and lower calcium carbonate saturation events. READ MORE

  6. 24. Recovery from Acidification - Policy Oriented Dynamic Modeling

    Author : Liisa Fransson; Institutioner vid LTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kemiteknik och kemisk teknologi; Petrology; mineralogy; geochemistry; Petrologi; mineralogi; geokemi; Chemical technology and engineering; target loads; sea-salt episode; sulfate adsorption; SAFE; LRTAP; critical loads; integrated assessment;

    Abstract : Dynamic biogeochemistry models are important tools for determining the time-scales of recovery from acidification. In the review process of the 1999 UNECE LRTAP Gothenburg protocol, results from dynamic models will probably be included when determining further reductions of acidifying emissions. READ MORE

  7. 25. Evolutionary implications of acidification: a frog’s eye view

    Author : Katja Räsänen; Andrew Hendry; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; acid stress; amphibians; local adaptation; maternal effects; maternal investment; Biologi; Biology; Biologi; populationsbiologi; Population Biology;

    Abstract : Understanding the diversity of life is one of the main aims of evolutionary biology, and requires knowledge of the occurrence and causes of adaptive genetic differentiation among geographically distinct populations. Environmental stress caused by acidity may cause strong directional selection in natural populations, but is little explored from an evolutionary perspective. READ MORE