Sökning: "Diatoms"

Visar resultat 1 - 5 av 30 uppsatser innehållade ordet Diatoms.

  1. 1. Temperature Optimum for Biomass Production of two Species of Benthic Diatoms

    Kandidat-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap; Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Författare :Vilmer Jansson; [2023-06-22]
    Nyckelord :;

    Sammanfattning : Diatoms and other algae can be cultivated and beneficially used in several sectors with applications ranging from nutrient recycling to production of high-valued biomaterials used by the green energy industries, in pharmaceutical products or as food supplements. In this experimental study, the temperature optimum for biomass production was tested for two species of benthic diatoms, Diatoma sp. LÄS MER

  3. 2. INFLUENCE OF TEMPERATURE ON BIOMASS AND GROWTH RATE OF BENTHIC DIATOMS

    Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Författare :Evelina Hansson; [2023-06-21]
    Nyckelord :benthic; diatoms; cultivation; thermal performance; photosynthetic pigments;

    Sammanfattning : Temperature has a significant impact on structure and abundance of microalgal community as well as on physiology (Sheehan et al., 2020). LÄS MER

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

    Master-uppsats, Lunds universitet/Miljövetenskaplig utbildning; Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

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

    Sammanfattning : 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. LÄS MER

  5. 4. Diatoms from the late Holocene of the western Chukchi Sea, Arctic Ocean: environmental signals and palaeoceanography

    Master-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Erik Browaldh; [2022]
    Nyckelord :diatoms; late holocene; SWERUS-L2-2-PC1; Herald Canyon; Chukchi Sea; ice-algae; sympagic; cryophilic; warm water diatom; Bering Sea Water species; bottom water temperature; BWT; benthic foraminifera; palaeothermometry; ice dynamics; Fragilariopsis; Fossula arctica; Paralia sulcata; Shionodiscus oestrupii; Thalassiosira simonsenii; Chaetoceros; Chaetoceros sp. 7;

    Sammanfattning : The sediment Core SWERUS-L2-2-PC1 (2PC) retrieved from the Chukchi Sea, Arctic Ocean sits in an oceanographically dynamic location at the Arctic-Pacific Ocean gateway. The 8.3 m-long core was retrieved in Herald Canyon at the marginal ice zone at 57 m depth. LÄS MER

  7. 5. Ensjön under 200 år : En stratigrafisk studie om vad bevarade kiselalger i sediment kan berätta om klimat och markanvändning

    Kandidat-uppsats, Södertörns högskola/Institutionen för naturvetenskap, miljö och teknik

    Författare :Olivia Friberg; [2021]
    Nyckelord :Climate change; Sediment core; Diatom analysis; Norrköping; Ensjön; Climate indicators; Global warming; Fertilizers; Herbicides; Cyclotella; Aulacoseira; Fragilaria; Klimatförändringar; sedimentkärna; kiselalgsanalys; Norrköping; Ensjön; Klimatindikatorer; Global uppvärmning; Mineralgödsel; Växtskyddsmedel; Cyclotella; Aulacoseira; Fragilaria;

    Sammanfattning : Since 1750, human emissions of greenhouse gases have created a temperature increase, affecting the whole world. Diatoms, single-celled microscopic algae that lives in waters all over the world, have different environmental preferences such as the water depth at which the thrive, salinity, nutrients, pH-values and more. LÄS MER