Essays about: "diatoms"

Showing result 1 - 5 of 19 essays containing the word diatoms.

  1. 1. How brownification and eutrophication effects a drinking water source – with Lake Bolmen, Sweden, in focus

    University essay from Lunds universitet/Miljövetenskaplig utbildning; Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

    Author : Stina Stomberg; [2022]
    Keywords : brownification; eutrophication effects; drinking water; phytoplankton; Lake Bolmen; mesocosm; Earth and Environmental Sciences;

    Abstract : The ongoing human impact in form of deforestation, urbanization and intense agriculture is affecting the natural hydrology and our freshwater lakes negatively. Both eutrophication and brownification has seen to increase with the ongoing environmental change which can potentially have large impact on our freshwater ecosystems. READ MORE

  2. 2. Odensjön - A new varved lake sediment record from southern Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Hanna Hertzman; [2021]
    Keywords : Varved lake sediment; late Holocene; organic sediments; diatoms; land-use history; southern Sweden; palaeolimnology; Earth and Environmental Sciences;

    Abstract : Annually laminated (varved) sediments provide opportunities to reconstruct climate change and human impact on the environment with high temporal resolution. Depending on the character of the varves, such sediments can provide insight into the delivery of both autochthonous and allochthonous material from the lake and its catch- ment and answer questions regarding both regional and local responses to climate- and land-use changes. READ MORE

  3. 3. Efficiency of diatom and flagellate-based marine food webs.

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Yasmina Hamladji; [2021]
    Keywords : phytoplankton; flagellate; diatoms; ciliates food web efficiency; fungi;

    Abstract : Aquatic microbial food webs are in general size structured. Phytoplankton, which constitute the base of the food web, are grazed by protozoa and mesozooplankton, which in turn are consumed by planktivorous fish. Food web efficiency (FWE) is a measure of how efficiently energy is transported up the food web. READ MORE

  4. 4. Phaeodactylum tricornutum – Compositional Analysis, Carbohydrate-Active Enzymes and Potential Applications of Residual Algal Biomass from Omega 3 Production

    University essay from KTH/Industriell bioteknologi

    Author : Isabella Norell; [2020]
    Keywords : Microalgae; diatoms; Phaeodactylum tricornutum; algal biomass; compositional analysis; polysaccharides;

    Abstract : Microalgae are gaining more attention for several reasons such as being potential producers of sustainable fuel, for use as health supplements and in skincare. Simris Alg is a Swedish company that produces Omega 3 supplements from a primary producer of these fatty acids - the algal diatom Phaeodactylum tricornutum, which is a sustainable alternative to Omega 3 derived from fish. READ MORE

  5. 5. Kiselalgers anpassning till ljus : en jämförelse mellan Brachysira neoexilis och Eunotia incisa

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

    Author : Ylva Friheden; [2019]
    Keywords : Kiselalger; Bacillariophyceae; tillväxtsexperiment; ljusintensitet;

    Abstract : Syftet med denna studie är att undersöka ljuspreferenserna hos kiselalgerna Brachysira neoexilis (BNEO) och Eunotia incisa (EINC), alltså vid vilka ljusintervall de har störst tillväxt. I samband med vattenkvalitetsundersökningar så skulle kunskapen om hur ljus påverkar kiselalgernas tillväxt minska den osäkerhet som finns kring hur andra påverkansfaktorer, förutom näring och organiska ämnen faktiskt kan påverka vattenkvalitetsindex. READ MORE