E1: Abiotic Factors that Limit Distributions
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What are the abiotic factors that limit distribution?
Temperature, moisture, and pH
Provide an example of temperature limiting distribution.
• Willow twigs harvested during the winter can survuve temps lower than -150 °C
Define moisure in terms of limiting distribution.
The organism’s ability to maintain water use will effect their distribution.
What are the three adaptations plants use to avoid desiccation?
• improving water uptake at roots (rapid root growth into deeper areas) • reducing water loss (reduce leaf surface area and close stomata) • Store water efficiently
What is a common garden experiment?
Plants from different locations are grown under similar conditions in the same place. Results reveal genetic components.
Who did the common garden experiment?
Clausen 1948
Provide an example of the common garden experiment.
Races of Weastern Yarrow from the western slope with lower temps and the eastern slope with drier conditions.