Avancerad sökning
Visar resultat 1 - 5 av 20 uppsatser som matchar ovanstående sökkriterier.
1. The Origins and Ecology of Early Paleozoic Spreiten Ichnofossils: Comparisons of Daedalus and Syringomorpha with Alectorurus
Magister-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : The Cambrian explosion not only shaped the ecosystems of the Phanerozoic, but fundamentally changed how biota interacts with the environment, including the substrate. Cambrian trace fossils Alectorurus and Syringomorpha as well as Ordovician-Silurian Daedalus represent novel modes of faunal interaction with the newly innovated shallow marine mixed-ground and have surprisingly limited stratigraphic ranges. LÄS MER
2. Polymerized Tubular Silicates in Lower Cambrian Carbonates – Biology or Chemistry?
Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : Shallow marine environments from the Lower Cambrian period were very different to shallow marine environments of today. Tubes of what was thought to be silica recovered from a partly dolomitized carbonate sample collected form a site near Indian Springs, Nevada could help further understand the chemistry and characteristics of such environments. LÄS MER
3. Variations in depositional environments of the Paleogene Firkanten Formation across Adventdalen, from Operafjellet to Breinosa
Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaperSammanfattning : The lowermost Paleogene clastic infill of the Central Spitsbergen Tertiary Basin, the coal bearing Firkanten Formation, has been the subject of study for researchers in the past but little focus has been on the northeast edge of the basin until now. Due to the economic potential of the coal seams in the formation, the Norwegian mining company, Store Norske Spitsbergen Grubekompani (SNSG), has for several years conducted core drilling in key locations in basin, and for decades, they have given an access to their core material to researchers. LÄS MER
4. Microplastics in the Oresund Region of the Baltic Sea - sources and effects
Magister-uppsats, Lunds universitet/Miljövetenskaplig utbildningSammanfattning : Plastic production is only increasing, and it‟s not showing any signs of slowing down. Microplastics are particles smaller than 5 mm, either produced intentionally, or created from items being withered into small particles. LÄS MER
5. The Establishment of Macrobenthic Faunal Communities in Planted Mangroves of Increasing Age
Kandidat-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresursläraSammanfattning : The mangrove ecosystem is a tropical coastal community inhabited by organisms adapted to the stressful environment of the tidal zone. Mangrove ecosystems has in recent years been noted for the important ecosystem services they offer. LÄS MER