Essays about: "Fossil Pollen"

Showing result 1 - 5 of 11 essays containing the words Fossil Pollen.

1. 1. Holocene vegetation change and its correlates in fennoscandia

   University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskap

   Author : Raphaela Infanger; [2022-10-21]
   Keywords : Fennoscandia; Holocene; human impact; climate impact; vegetation change; fossil pollen;

   Abstract : Climatic and anthropogenic legacy has differently impacted vegetation and its community composition. To determine the extent and origin of changes across Fennoscandia, representative regions were defined that entailed sufficient spatial and temporal data. READ MORE

3. 2. Ancient plant cuticle chemistry: preservation and characterization of organic matter as biomarker of past UV-B radiation

   University essay from KTH/Kemi

   Author : Larissa Lopes Cavalcante; [2021]
   Keywords : UACs; fossil cuticle; p-coumaric acid; ferulic acid; UV-B proxy; micro-FTIR; confocal Raman microscope; UAF; fossil kutikula; p-kumarinsyra; ferulinsyra; UV-B-proxy; mikro-FTIR; konfokalt Raman-mikroskop;

   Abstract : Biologiska processer hos olika organismer påverkas av ultraviolett-B-strålning (UV-B). Kunskapen om förändringar i UV-B-flödet som nått planetens yta under det geologiska tidsspann sedan flercelligt liv uppstod är dock begränsad. READ MORE

4. 3. Land cover changes in Southern Sweden from the mid-Holocene to present day: insights for ecosystem service assessments

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Robert O'Dwyer; [2019]
   Keywords : Geography; Geographical Information Systems; GIS; Physical Geography; Götaland; Landscape Reconstruction Algorithm; Fossil Pollen; Ecosystem Services; Earth and Environmental Sciences;

   Abstract : Climate change and human impact play a huge role in the sustainability and development of ecosystems and the services they offer to societies over temporal and spatial scales. Fossil pollen-based estimates provide unique information on past land cover change, but to date there are not many methods able to create spatially continuous maps and have a fine scale of land cover changes inferred from pollen information. READ MORE

5. 4. Evidence for birch forests and a highly productive environment near the margin of the Fennoscandian ice sheet in the Värriötunturit area, northeastern Finland

   University essay from Stockholms universitet/Institutionen för naturgeografi

   Author : Fredrik Bogren; [2019]
   Keywords : Early Holocene; productive ice-marginal environment; subarctic birch forests; plant macrofossils; pollen; palaeoenvironmental reconstructions; palaeoclimate reconstructions; Värriötunturit; Kuutsjärvi; northeastern Finland; northern Fennoscandia;

   Abstract : High-resolution records of early Holocene deposits are rare, and as a consequence reconstruction of terrestrial environments very soon after the deglaciation has often been difficult. In this study the palaeoenvironmental conditions of early Holocene (c. 10600-7500 cal. READ MORE

6. 5. Atmospheric soot particle transformation from urban to rural

   University essay from Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

   Author : Fredrik Johansson; [2018]
   Keywords : Aerosol; soot; atmosphere; Physics and Astronomy; Earth and Environmental Sciences;

   Abstract : The main objective of this work was to investigate if there is a contribution of aerosol from the urban region of Copenhagen at the rural station Vavihill. This was done by analyzing measurement data between 1st of January and the 28th of February 2013 measured with a Dierential Mobility Particle Sizer (DMPS), Soot Particle Aerosol Mass Spectrometer (SP-AMS), a Cloud Condensation Nuclei Counter (CCNC) and a NOx-analyzer. READ MORE