Sökning: "Palynology"

Visar resultat 1 - 5 av 15 uppsatser innehållade ordet Palynology.

  1. 1. Global Warming Induced by Oceanic Anoxic Event 1a Had a Pronounced Impact on the Early Cretaceous Terrestrial Vegetation of Southern Sweden

    Master-uppsats, Uppsala universitet/Paleobiologi

    Författare :Marcos Amores; [2022]
    Nyckelord :palynology; spore-pollen; biostratigraphy; oceanic anoxic event 1a; high-latitude; Early Cretaceous;

    Sammanfattning : The Mesozoic is punctuated by several rapid global warming events that are marked by the worldwide deposition of organic-rich marine sediments. These events, known as oceanic anoxic events (OAEs), are characterised by intervals where the worldwide carbon cycle suffers a disruption due to major palaeoceanographic and climatic shifts, leading to anoxic marine environments and the creation of black shales. LÄS MER

  3. 2. Pollen identification using sequencing techniques

    Magister-uppsats, Högskolan i Skövde/Institutionen för biovetenskap

    Författare :Bimaljeet Kaur; [2022]
    Nyckelord :pollen; rbcL gene; barcoding; metabarcoding; Sanger sequencing; MinION sequencing;

    Sammanfattning : Palynology or the study of pollen, is essential understand the relationship between plants and their pollinators. Traditionally, pollen grains are identified by microscopy. The method has several shortcomings, such as being time-consuming and having low taxonomic resolution. LÄS MER

  4. 3. Using Pollen to Reconstruct Past Vegetation in a Landscape : Comparing Theoretical and Empirical Methods on a Single Pollen Record in Hemavan, Sweden

    Magister-uppsats, Umeå universitet/Institutionen för idé- och samhällsstudier

    Författare :Johanna Kantak; [2022]
    Nyckelord :Vegetation reconstruction; LRA; palynology; fall speed; GIS;

    Sammanfattning : Pollenanalyser har länge gjorts för att få en uppfattning om förflutna vegetationer. Men att återskapa olika miljöer med hjälp av pollen är svårt på grund av en rad olika faktorer. LÄS MER

  5. 4. Continuous Presence : A Historical Ecology of Ängesviken, Jämtland

    Master-uppsats, Uppsala universitet/Arkeologi

    Författare :Petter I. Larsson; [2021]
    Nyckelord :Landscape archaeology; palynology; paleoecology; patchiness; niche construction; historical ecology; continuous presence; boreal forest; outland utilisation; multidisciplinary analysis; Landskapsarkeologi; skogsarkeologi; pollenanalys; historisk ekologi; Jämtland; utmarksbruk; tvärvetenskaplig analys;

    Sammanfattning : A case study of a prehistoric site named Ängesviken, in eastern Jämtland, is presented in this thesis. Ängesviken is situated in a region that traditionally has been understood as peripheral and without a significant history prior to the Late Iron Age or even the mediaeval period. LÄS MER

  7. 5. Analys av bipollensorter i Västerbotten : Betydelse och för- och nackdelar med klassiska morfologiska metoder

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Jesper Persson; [2021]
    Nyckelord :Palynology; bee pollen; competition; honeybees; pollinating insects;

    Sammanfattning : Composition of pollen pellets foraged by honeybees, sampled in Degernäs and Tavelsjö, Västerbotten County, during early summer 2020, is used to explore if honeybees are monofloral or polyfloral. Samples from different days and different colours were evaluated by light microscopy. LÄS MER