Essays about: "Östersjön"

Showing result 1 - 5 of 6 essays containing the word Östersjön.

  1. 1. Swedish Nitrogen Flows : A national budget of anthropogenically induced reactive nitrogen

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Vincent Lernbecher; [2021]
    Keywords : ;

    Abstract : Nitrogen is a fundamental element in all forms of life and a crucial component of our agricultural productivity and global food security. However, excess nitrogen caused by human activity poses a serious threat to the environment and human health. READ MORE

  3. 2. Blue Growth : Applications and properties of biochar made out of reed

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Axel Karlsson; Pinthira Fagerström; [2021]
    Keywords : Common reed; Phragmites australis; Giant reed; Arundo donax; Usage; Utilization; Baltic sea; Sweden; Eutrophication; Overfertilization; Nutrient discharge; Blue bioeconomy; Soil improvement; Feedstock; Pyrolysis; Biochar; Biocoal; Coal supplement; Bioenergy; Biofuel; Carbon sequestration; Fodder; Cost analysis; Bladvass; Phragmites australis; Italienskt rör; Arundo donax; Användning; Användningsområde; Östersjön; Sverige; Eutrofiering; Övergödning; Näringsläckage; Blå bioekonomi; Jordförbättring; Råmaterial; Pyrolys; Biokol; Bioenergi; Biobränsle; Kolbindning; Foder; Kostnadsanalys;

    Abstract : The climate on earth keeps getting warmer where heat waves, eutrophication, rising sea levels, extreme weather like flooding, droughts and wildfires are an expanding problem. The focus of this bachelor thesis is to determine the potential of mitigating eutrophication and while contributing to blue growth by harvesting and make use of reeds like Phragmites australis and Arundo donax. READ MORE

  4. 3. Beach-cast fertilizers for cultivation of carrots and radishes on Swedish Gotland : The effect on crop size and nutrient composition

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Sofie Ögren; [2020]
    Keywords : Eutrophication; marine biofertilizer; beach-cast management; nutrient analysis; NMR;

    Abstract : In the eutrophicated Baltic, algal blooms with toxin-producing algae and plant overgrowth is a large threat to the marine environment, humans and animals. The use of external nutrient inputs into agriculture, such as mineral fertilizers (NPK), is reaching the Baltic through runoff which causes a constant, linear nutrient flow from land to the sea, which is one of the main contributors to accelerated eutrophication. READ MORE

  5. 4. Västergarn Boat Rivets in Context : Case Study : The Missing Boatyard

    University essay from Uppsala universitet/Arkeologi

    Author : Richard Koehler; [2020]
    Keywords : Marine craft; boatyard; WBS; supply-chain; Knärr; Cig; boat; ship; maritime community; interdisciplinary;

    Abstract : Gotland has a rich material cultural heritage from the Stone Age to the Middle Ages thanks to the island's strategic location in the middle of the Baltic Sea; especially true for the Viking Age when Gotlanders had extensive trade contacts with the east dating from the mid 12th century and Gotland’s economy was dominated by such contacts. This essay deals with Gotland's maritime infrastructure and its development between about 1100 and 1400 based on a case study of boat rivets from the medieval settlement of Västergarn. READ MORE

  6. 5. Acid Sulfate Soils and Metal Accumulation in Sediments in Rosån Catchment, Northern Sweden

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Carola Lindström; [2017]
    Keywords : Acid sulfate soils; increased metal concentrations; anthropogenic activity; Sura sulfatjordar; ökade metallkoncentrationer; mänsklig påverkan;

    Abstract : Global environmental concerns arise when marine deposits with fine-grained iron sulfide-rich sediments (FeS and FeS2), now situated above sea level, oxidize from anthropogenic lowering of the groundwater table. The oxidation of iron sulfides decreases the soil pH and the acidic environment of these Acid Sulfate Soils (AS) soils increase weathering and mobilization of metals into adjacent watercourses, lakes and estuaries. READ MORE