Sökning: "heavy metal stress"
Visar resultat 1 - 5 av 22 avhandlingar innehållade orden heavy metal stress.
1. Effects of heavy metal contamination on carbon and nitrogen cycling : An ecological approach to assess risks to soil functions
Sammanfattning : Soil contamination with heavy metals may disrupt soil microorganisms with important roles in carbon (C) and nitrogen (N) cycling. However, there is a lack of understanding on how microorganisms are affected in soil, which may lead to a mismatch when assessing risks of contaminants to field soils. LÄS MER
2. Organic complexing agents for remediation of heavy metal contaminated soil
Sammanfattning : Soil washing of heavy metal contaminated soil may be enhanced by the addition of synthetic chelators. Since many of these chelators may imply stress to soil organisms and are poorly biodegraded, identification and evaluation of effective biodegradable or recyclable chelators (synthetic and/or naturally produced) is of great interest. LÄS MER
3. Heavy metal tolerance, uptake, accumulation, and translocation in Salix and its application in phytoremediation
Sammanfattning : In the environment, heavy metals are major stressors for plants, and since plants are immobile, they cannot avoid the stress but must adapt. Therefore, plants may develop avoidance and tolerance mechanisms to reduce susceptibility to metal toxicity. LÄS MER
4. Fungal and bacterial contributions to decomposition in terrestrial and aquatic ecosystems
Sammanfattning : Microbial decomposers process a great majority of net primary production in the biosphere and regulate carbon (C) and nutrient cycling. Microbial communities are extremely diverse and often disregarded from global C-cycling models, but one strategy to overcome this challenge is to focus on the major decomposer groups: fungi and bacteria. LÄS MER
5. Evolutionary and Ecological Effects of Metal Pollution on Coastal Diatoms
Sammanfattning : Oceans are changing rapidly in response to human activities, such as toxic pollution, eutrophication, and climate change. Diatoms are major primary producers in the oceans with short generation times, flexible reproductive strategies, and high standing genetic diversity. LÄS MER
