Essays about: "nutrient variability"

Showing result 6 - 10 of 20 essays containing the words nutrient variability.

  1. 6. Rice yields under water-saving irrigation management : A meta-analysis

    University essay from Stockholms universitet/Institutionen för naturgeografi

    Author : Amanda Åberg; [2017]
    Keywords : Rice; yield; water scarcity; water-­saving irrigation; WSI; alternate wetting and drying; AWD; soil organic matter; soil organic carbon.;

    Abstract : Water scarcity combined with an increasing world population is creating pressure to develop new methods for producing food using less water. Rice is a staple crop with a very high water demand. This study examined the success in maintaining yields under water-saving irrigation management, including alternate wetting and drying (AWD). READ MORE

  3. 7. Inter- and Intra-specific variability in functional traits of seedlings planted in successional tropical dry forest

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Stina Söderlund; [2016]
    Keywords : functional traits; leaf traits; restoration; stem traits; tropical Dry Forests;

    Abstract : The dry tropical forests are among the most threatened ecosystems in the world; they have been degraded and removed due to commercial values and cattle ranges. Restoration projects have gained global importance, including in Costa Rica where large restoration efforts have been started since 1970s. READ MORE

  4. 8. Distribution of black carbon and its impact on Eutrophication in Lake Victoria

    University essay from Linköpings universitet/Tema Miljöförändring

    Author : Moses Odhiambo; Joyanto Routh; [2016]
    Keywords : Lake Victoria; Eutrophication; Biomass burning; Black Carbon;

    Abstract : Lake Victoria (LV), is the largest tropical fresh water lake. It is however facing a myriad of challenges like eutrophication, introducing species, mass extinction and climate change. Eutrophication has mostly been seen as a result of non-point pollution from upstream agricultural areas. READ MORE

  5. 9. Potential for using high frequency turbidity as a proxy for total phosphorus in Sävjaån

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Emma Lannergård; [2016]
    Keywords : surface water quality; high frequency monitoring; continuous monitoring; turbidity; in situ sensor; surrogate measurements; total suspended solids; total phosphorus; phosphorus; phosphorus load; load estimation;

    Abstract : Transport of particles carrying nutrients and contaminants from land to sea is a challenge to monitor due to the high temporal variability in concentrations. Phosphorus is a particle associated nutrient, largely affecting the state of waters due to its effects on eutrophication. READ MORE

  6. 10. Water movement and phosphorus leaching from managed and unmanaged grass buffer strips

    University essay from SLU/Dept. of Soil and Environment

    Author : Daniel Jack; [2016]
    Keywords : dissolved reactive phosphorus; hydraulic conductivity; organic matter; rainfall simulation; turbidity;

    Abstract : This study was undertaken in a long term field trial investigating the effect of grass buffer strips on nutrient leaching. The treatments included were harvested grass (HG), non-harvested permanent grass (PG) and cultivated soil without a buffer strip (control). READ MORE