Essays about: "Sötvatten"

Showing result 16 - 20 of 43 essays containing the word Sötvatten.

  1. 16. Variability of summer CH4 and CO2 flux rates in and between three large Swedish lakes : A spatio-temporal field study

    University essay from Linköpings universitet/Tema Miljöförändring

    Author : Isak Nilsson; Filip Seifarth; [2020]
    Keywords : Large lakes; Freshwater; Flux chambers; Emissions; Ebullition; Diffusion; Carbon cycle; Carbon budget; Methane budget; Greenhouse gases; GHGs; Methane; CH4; Carbon dioxide; CO2; Variability; Spatial; Temporal; Stora sjöar; sötvatten; flödeskammare; utsläpp; bubblor; diffusion; kolcykel; kolbudget; metanbudget; växthusgaser; metan; CH4; koldioxid; CO2; variabilitet; rumslig; tidsmässig;

    Abstract : Understanding of natural greenhouse gas (GHG) cycles is crucial for making GHG budgets, which work as basis in climate change and global warming policy programs. Lakes as a source for GHG activity have only recently been included in global GHG budgets, and most studies of lake GHG flux rates are conducted on lakes <10 km2, which only comprise roughly half of the global lake area—making data of large lake flux rates scarce. READ MORE

  3. 17. Effects of Salinization on Lake Metabolism

    University essay from Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)

    Author : Emil Nordström; [2020]
    Keywords : Freshwater ecology; carbon flux; mesocosms; diurnal variation;

    Abstract : With rising salinity levels in many freshwaters across the globe caused by for example sealevel rise and de-icing salts, it becomes important to understand what effect it has on freshwater ecosystems, since the lakes and rivers themselves are important parts in the global carbon cycle. In this study I have looked at what effects increased salinity levels have on different lakes metabolism, specifically oxygen concentration and primary production. READ MORE

  4. 18. Groundwater denitrification by fluidized bioelectrochemical systems

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Lena Bonin; [2020]
    Keywords : Bioelectrochemistry; fluidized bed reactor; bioremediation; denitrification; groundwater; reduced graphene oxide;

    Abstract : Groundwater (GW) accounting for most of the freshwater available around the World, finding sustainable techniques to depollute it is of crucial importance for safe drinking water supply. The extensive use of fertilizers in the agriculture, as well as other anthropogenic activities, are contributing to the excessive nitrate levels in some aquifers. READ MORE

  5. 19. A review on hydrological modelling tools for Nexus assessment : A comparative study

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Emma Brännström; [2019]
    Keywords : Hydrological modelling tool; computer-based models; MIKE SHE; SWAT;

    Abstract : The natural movement of water is known as the hydrological cycle. Many different factors affect the hydrological cycle and the availability of freshwater. The availability of freshwater is essential for many human activities. READ MORE

  6. 20. Hur kan Östersjöns salinitet påverkas av ett förändrat klimat?

    University essay from SLU/Dept. of Energy and Technology

    Author : Jonathan Lindén; [2019]
    Keywords : Östersjön; salinitet; salthalt; klimatförändringar;

    Abstract : The Baltic Sea is one of the largest brackish seas in the world, with a characteristic salinity gradient from its northernmost point southward towards the Danish Straits. This gradient is caused by a high freshwater input from its surrounding catchment areas. READ MORE