7 record(s) found with the tag "paleoenvironment" (multi-year projects are grouped):
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Climate change and postglacial paleoenvironmental history of peatlands in the Mackenzie Delta area
Principal Investigator: Vardy, Sheila
Licensed Year(s): 1993 1992
Summary: This research is part of an international project that is aimed at documenting the history of changes in the treeline during the Holocene era. While much is known about the environment and climate of this era, little is known about the development of peatlands during this time. I will collect data on peat layering, pollen and fossils in order to determine how the peatlands developed during this ...


Palynological studies in the Mackenzie Observatory
Principal Investigator: Jette, Helene
Licensed Year(s): 1995 1993 1992
Summary: This project continues to examine the history of plant communities in the Mackenzie River and Delta regions over the past 15,000 years. Using a hand auger, core samples of sediments are taken from lake bottoms and the sediments are analyzed for the presence of pollen and diatoms. Radiocarbon dating, a technique used to estimate age, will estimate when certain species were present in the past....


Long-term Stability of Arctic Island "Oases"
Principal Investigator: Gajewski, Konrad
Licensed Year(s): 2008 2004 2001 1994 1993 1992 1991 1990
Summary: This study will investigate the long-term stability of the arctic "oases" of Polar Bear Pass and Hot Weather Creek by the pollen analyses of lake sediment cores. The sediment that accumulates in the bottom of lakes provides a history of the conditions in the lake. The pollen incorporated in the sediment can be interpreted to give an idea of the climate and vegetation for the past several thousand ...


Paleolimnology and sedimentology of lakes on the unglaciated terrain of Fosheim Peninsula, Ellesmere Island
Principal Investigator: Wolfe, Alexander P.
Licensed Year(s): 1992 1991 1990
Summary: The Researcher will continue to investigate lakes on the unglaciated terrain of Fosheim Peninsula to determine the former environments of high and low arctic lakes. By analyzing the physical and chemical properties of the sediments, as well as the preserved biological remains within them, the nature and timing of rapid environmental changes at the close of the last glaciation may be explained....


Field Sampling and Collecting of Tertiary Sediments in the Geodetic Hills Fossil Forest Locality, Eastern Axel Heiberg Island, NWT, for Plant Macro-Fossils
Principal Investigator: Gruchy, C.G.
Licensed Year(s): 1990 1989 1988 1987
Summary: The Researcher and team will study the Geodetic Hills Locality. They will collect plant macrofossils to identify and classify the fossil pollen and to determine botanical affinities, deduce and describe the paleoecology and the paleoenvironment....


A study to reconstruct post-glacial vegetation and climate.
Principal Investigator: Ritchie, J.C.
Licensed Year(s): 1988 1987
Summary: The sampling of lake sediment for subsequent laboratory analysis of pollen and other contained material, with the final aim to reconstruct postglacial vegetation and climate....


Licence #2253
Principal Investigator: Ritchie, J.C.
Licensed Year(s): 1978
Summary: To examine and sample the unconsolidated sediments of various small lakes in an area surrounding Hyndman Lake (50 km. radius) ESE of Inuvik, for the purpose of making laboratory analyses of Carbon - 14 age, pollen stratigraphy and other microfossils. The ultimate objective is to reconstruct the past vegetation and environment of the area....


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