Search for dissertations about: "våtmarker"

Showing result 16 - 20 of 33 swedish dissertations containing the word våtmarker.

2. 16. Life paths through space and time: Adding the micro-level geographic context to longitudinal historical demographic research

   Author : Finn Hedefalk; Centrum för ekonomisk demografi; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Geographic micro-level factors; longitudinal historical data; geocoding; historical demography; 19th century; individual level; spatio-temporal analysis; detailed geographic data; geographic context.; property units; rural historical soceties; Geographic micro-level factors; longitudinal historical data; geocoding; historical demography; 19th century; individual level; spatio-temporal analysis; detailed geographic data; property units; geographic context;

   Abstract : Historical demographic research is central to understanding past human behaviours and traits, such as fertility, mortality and migration. An essential part of historical demography is conducting longitudinal analyses at the micro-level, which involves the detailed follow-up of individuals over long time periods throughout their lives. READ MORE

4. 17. Characterization, toxicity and treatment of wood leachate generated outdoors by the wood-based industry

   Author : Henric Svensson; Linnéuniversitetet; []
   Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Wood leachate; Log yard runoff; Stormwater; Toxicity; Artemia salina; Vibrio fischeri; Constructed wetlands; Forestry and Wood Technology; Skog och träteknik;

   Abstract : Wood is a natural raw material, and would hardly be considered a risk to the environment. However, the handling of wood materials on an industrial scale has been shown to have a negative impact on water bodies that run-off from industrial sites that process wood-based materials. READ MORE

5. 18. Catching Mercury : Mercury in Lake Vänern and Swedish catchments

   Author : Peter Wihlborg; Lars Hylander; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; mercury; deposition; budget; sediments; retention; catchments; dating; kvicksilver; deposition; budget; retention; avrinningsområden; datering; Water in nature and society; Vatten i natur och samhälle;

   Abstract : Vänern och dess sediment har under 1900-talet varit en av Sveriges mest kvicksilver (Hg) kontaminerade miljöer. 47 sedimentprofiler tagna 2001 analyserades for total Hg och temporala och spatiala mönster påvisades. Av den direkta Hg tillförseln 1918-2001 återfinns c:a 30 ton i bottensedimenten. READ MORE

6. 19. Integrating fluvial processes into the global Si cycle

   Author : Patrick Frings; Kvartärgeologi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : Silicon (Si) is ubiqutious in natural waters as dissolved silica (DSi) and is used as a nutrient by many plant and animal species. DSi ultimately derives from the weathering of silicate minerals, a process which also consumes atmospheric CO2 and couples the silicon and carbon cycles. READ MORE

7. 20. Geophysical Applications of Vegetation Modeling

   Author : Jed O Kaplan; Biologiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Environmental chemistry; Växtbiokemi; Plant biochemistry; CH4; CO2; stable isotopes; carbon cycle; wetland; ice core; methane; Holocene; mammoths; tundra; ice age; LGM; biogeography; biome; biogeochemistry; Vegetation model; Miljökemi; Physical geography; geomorphology; pedology; cartography; climatology; Fysisk geografi; geomorfologi; marklära; kartografi; klimatologi;

   Abstract : This thesis describes the development and selected applications of a global vegetation model, BIOME4. The model is applied to problems in high-latitude vegetation distribution and climate, trace gas production, and isotope biogeochemistry. READ MORE