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Showing result 1 - 5 of 13 essays matching the above criteria.

1. 1. Distribution and transport of microplastics and metals in sewage sludge-amended agricultural soil : a Comparative study between microplastics copper, cadmium, and nickel

   University essay from SLU/Dept. of Soil and Environment

   Author : Nora Ottander; [2022]
   Keywords : Bioturbation; advective transport; earthworm; Aporrectodea longa;

   Abstract : This thesis investigated the vertical transport of microplastics and metals in agricultural soil after sewage sludge application. Sewage sludge is commonly used in agriculture for adding nutrients and carbon to improve the soil quality. READ MORE

3. 2. Investigating the Fluxes of Radio-Cesium (137Cs) in Sweden : Investigating the Fluxes of Radio-Cesium (137Cs) in Sweden

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Hammad Masood; [2022]
   Keywords : Chernobyl incident; Sweden; radio-cesium; contamination; terrestrial environment; quatic environment;

   Abstract : Technological advancement and the quest for power have gradually contaminated our environment, as industrialization, agriculture, and nuclear activities progressed. In the year 1986, a terrible nuclear incident occurred in Ukraine, in which the nuclear reactor exploded. READ MORE

4. 3. Record of the end-Triassic mass extinction in shallow marine carbonates: the Lorüns section (Austria)

   University essay from Lunds universitet/Geologiska institutionen

   Author : Linus Brakebusch; [2022]
   Keywords : sedimentology; geochemistry; ooids; oolites; oncoids; oncolites; Triassic; Jurassic; Rhaetian; Hettangian; ocean acidification; Earth and Environmental Sciences;

   Abstract : The end-Triassic mass extinction (ETE) was one of the five big mass extinctions of the Phanerozoic and occurred ~201 Ma ago. Research agrees that the main triggering factor for the ETE was the eruptions of the Central Atlantic Magmatic Volcanic Province (CAMP), linked to the break-up of the supercontinent Pangaea. READ MORE

5. 4. Nanoplastic transport in soils by advection and bioturbation

   University essay from SLU/Dept. of Soil and Environment

   Author : Wiebke Mareile Heinze; [2019]
   Keywords : column leaching; attachment efficiency; exposure; mixing rates; modelling;

   Abstract : Micro- and nanoplastics are increasingly perceived as an emerging threat to ecosystems. They are emitted to soils through different pathways, including sewage sludge or compost applications in agriculture, or through tire abrasion and degradation of mismanaged waste. READ MORE

6. 5. Methane flux in the Doñana wetlands : Waterbird guano addition and benthicinvertebrate effects

   University essay from

   Author : Noa Ratia; [2019]
   Keywords : aquatic invertebrates; bottom-up effects; CH4; Doñana; greenhouse gases; mesocosm; methane; sediment cores; akvatiska evertebrater; bottom-up effekter; CH4; Doñana; mesokosm; metan; sedimentkärnor; växthusgaser;

   Abstract : Wetlands are globally important biogeochemical hotspots, and their roles as either significant sources of greenhouse gas or carbon sinks are strongly controlled by environmental drivers such as carbon, nitrogen, and phosphorus availability, which can stimulate emission of three greenhouse gases: nitrous oxide (N2O), carbon dioxide (CO2) and methane (CH4). Mounting evidence suggests that aquatic invertebrate activity can enhance wetland greenhouse gas flux, through bioturbation and bioirrigation of surrounding sediments. READ MORE