Temperature
•From ¹⁶O ¹⁸O ratio (more ¹⁸O warmer temp)
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Impact of Temperature & Sea Level on Climatic Zones & Biogeography, Slides of Geology
The effects of temperature changes and sea level fluctuations during glaciations and interglacials on climatic zones and biogeography. Topics include the creation of corridors and barriers, shifts in climatic zones towards the equator, and the formation of refugia and pleistocene extinctions. The document also discusses the impact of these changes on the migration patterns of various species.
Typology: Slides
2012/2013
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Temperature
- From ¹⁶O ¹⁸O ratio (more ¹⁸O warmer temp)
Sea level changes
- During glaciations sea level dropped (up to 160 m compared to current sea level!)
- During previous interglacials it may have been 70 m higher than now
Climatic zones
- Climatic zones shifted towards the equator
- Novel combinations of temperature, winds and precipitation generated non-analogue climatic zones
Biogeographic Responses to
Glaciation
- Changes in location, extent, and configuration of prime habitat
- Changes in the nature of climatic and environmental zones
- Formation and dissolution of dispersal routes
- Altitudinal migration of entire biomes
Migration
Migration
- Changes in single species geographic ranges
Migration
- Biotic interchanges
- Eurasian species crossed Beringia