Essays about: "nutrient accumulation"

Showing result 16 - 20 of 30 essays containing the words nutrient accumulation.

1. 16. The Po Delta Biosphere Reserve: Management challenges and priorities deriving from anthropogenic pressure and sea level rise

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Damiano Vesentini; [2019]
   Keywords : geography; GIS; environmental pressure; water quality; nutrient accumulation; rising sea level; climate change; value for conservation; Earth and Environmental Sciences;

   Abstract : The Po Delta Biosphere Reserve is located in Northern Italy and has attained recognition by UNESCO in 2015 due to its unique natural and cultural value. The reserve covers an area of approximately 140 000 hectares, supporting a human population of 118 000, as well as a complex mosaic of ecosystems, which are found in this transitional waters landscape. READ MORE

3. 17. Long-term application of digestate and biofuel ash to arable soil : effects on the solubility of Cd, Al and trace metals as evidenced by simulated scenarios

   University essay from SLU/Dept. of Soil and Environment

   Author : Elias Bäckström; [2018]
   Keywords : cadmium; fertilizer; Visual MINTEQ;

   Abstract : The importance of nutrient recycling could not be emphasized enough in to-day’s society. Reduction of waste as well as recycling of nutrients would be the result if ash and biogas digestate could be used as fertilizer. However, the solubility of Cd, Al and micronutrients might be affected in a different way than by standard fertilizers. READ MORE

4. 18. Challenges during start-up of urine nitrification in an MBBR

   University essay from Lunds universitet/Kemiteknik (CI)

   Author : Ellen Ascard Edefell; [2017]
   Keywords : Urine; source-separation; urine stabilisation; nitrogen recovery; nitrification; moving bed biofilm reactor; MBBR; water engineering; environmental engineering; vattenförsörjningsteknik; avloppsteknik; Technology and Engineering;

   Abstract : Nitrogen and phosphorous compounds are secreted by humans and treated in wastewater treatments plants. These substances are also found in agricultural fertilisers and needed for plant growth. Nutrient recycling is limited in conventional treatment systems and valuable products are lost. READ MORE

5. 19. Harvesting and utilizing beach cast on Gotland : A study of the benefits, challenges and opportunities of turning a waste into a resource

   University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

   Author : Filip Dessle; [2017]
   Keywords : Beach cast; macroalgae; bioenergy; biofertilizer; eutrophication; cadmium;

   Abstract : Accumulation of beach cast biomass on coastal zones around Gotland is an increasing problem that reduce the recreational value of beaches and cause environmental degradation of coastal environments. Beach cast was once regularly harvested on Gotland, as it was considered a valued biofertilizer, but as it seized to be used in combination with the eutrophication of the Baltic sea, beach cast accumulation has increased in scale. READ MORE

6. 20. Biophysical changes following landscape restoration : in Changting model restoration site in Fujian province, southern China

   University essay from SLU/Southern Swedish Forest Research Centre

   Author : Martin Ewertson; [2016]
   Keywords : afforestation; biomass carbon pools; carbon and nitrogen in soil; broadleaves enrichment; eroded red soil;

   Abstract : China has promised to tackle climate change by decreasing its emission and promote carbon sinks primarily by forest plantations and restorations. There is a growing debate about the impacts of large-scale restorations using few fast-growing species on the kind of ecosystem we are creating and its adaptation to the future environmental conditions. READ MORE