Global ETD Search

THE IMPLICATIONS OF ATMOSPHERIC POLLEN RAIN FOR FOSSIL POLLEN PROFILES IN THE ARID SOUTHWEST (AEROBIOLOGY, PALAEOBOTANY, TAPHONOMY, PRESERVATION).

O'ROURKE, MARY KAY.The University of Arizona.1986

I compared atmospheric and soil pollen values to determine taphonomic influences on pollen in Southwestern soils. Burkard traps sampled atmospheric pollen for six years from multiple sites in Tucson, Arizona. Tauber and soil samples were collected for two years at Tumamoc Hill (Tucson). Morus, …

arizona-thes Repository record for THE IMPLICATIONS OF ATMOSPHERIC POLLEN RAIN FOR FOSSIL POLLEN PROFILES IN THE ARID SOUTHWEST (AEROBIOLOGY, PALAEOBOTANY, TAPHONOMY, PRESERVATION). (opens in a new tab)

A phylogenetic study of the Cynipoidea (hymenoptera)

Fergusson, Nigel Donald MacDadeCity of London Polytechnic1990

… biogeographical distribution, plate tectonics, palaeobotany, palaeoclimatology, the origin of hyperparasitism and the adaptive characters associated with xylophagous hosts were all considered. All the available fossil cynipoids were examined and the evolutionary history, holophyly, and …

london-metro Repository record for A phylogenetic study of the Cynipoidea (hymenoptera) (opens in a new tab)

Genetic variation, mating system, and nectar robbery in Aconitum lycoctonum (Ranunculaceae)

Utelli, Anna-Barbara2000

ethz Repository record for Genetic variation, mating system, and nectar robbery in Aconitum lycoctonum (Ranunculaceae) (opens in a new tab)

Holocene climate and environmental dynamics on the Tristan da Cunha island group, South Atlantic

Ljung, KarlQuaternary Sciences, Department of Geology, Lund University2007

It has been shown that the present interglacial has been climatically dynamic with both rapid and severe climatic fluctuations. The spatial and temporal differences of these changes are however not fully resolved. The aim of this thesis is to present a detail high resolution record of past climate …

lund Repository record for Holocene climate and environmental dynamics on the Tristan da Cunha island group, South Atlantic (opens in a new tab)

The Ups and Downs of the Holocene: Exploring Relationships between Global CO2 and Climate Variability in the North Atlantic Region

Jessen, CatherineQuaternary Sciences, Department of Geology, Lund University2006

This thesis aimed to examine the relationship between climate and atmospheric CO2 concentrations through rapid climate changes during the Holocene. Climate was reconstructed using high-resolution, radiocarbon dated, lake sediment geochemical proxies (magnetic susceptibility, loss-on-ignition, total …

lund Repository record for The Ups and Downs of the Holocene: Exploring Relationships between Global CO2 and Climate Variability in the North Atlantic Region (opens in a new tab)

Tree-limit ecotonal response to Holocene climate change in the Scandes Mountains of west-central Sweden

Bergman, JonasDepartment of Geology, Lund University2005

The aim of this thesis was to reconstruct the Holocene vegetational and climatic development in the Sylarna-Storulvån area, western Jämtland, in the central Scandes Mountains. Temporal trends and fluctuations in the elevation and vegetational character of the tree-limit ecotone were studied mainly …

lund Repository record for Tree-limit ecotonal response to Holocene climate change in the Scandes Mountains of west-central Sweden (opens in a new tab)