Chapter 4.docx - Chapter 4 Frozen frogs in case study show...

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Chapter 4 Frozen frogs in case study show both tolerance and avoidance with the drastic temperature changes Freezing can pose risks such as ice crystals breaking their cells, little to no circulation and even death Potential distribution looks only at abiotic factors such as temperature Ex. penguins: Potential distribution could look at climate, topography, sunlight, terrain, etc. Actual distribution could look at food supply, predators, mate availability, competitor fighting for same food supply, etc. Dispersal- ex. penguins do not live in the arctic because dispersal limits them (i.e. they have no way to get there) and if they were put up there they would not know how to survive due to a new environment Disturbance- major, extreme events
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Unformatted text preview: Plants are good indicators of the environment because they are immobile Frogs freezing is an example of acclimatization Adaptation cannot occur within a single individual within its lifetime; it happens over generations Stomates also help regulate temperature in plants (they also help with gas exchange during photosynthesis) Pubescence helps reflect sunlight Critical temperature varies by species Water moves towards areas of salts and solutes due to its lower energy Hyperosmotic- concentration outside the cell is higher Hypoosmotic- concentration outside the cell is lower Matric potential has to do with the charges on water Soil plays a big part in matric potential...
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