Range of Tolerance Foss Environments Module Environmental Factors

Range of Tolerance Foss Environments Module

Environmental Factors �A relationship exists between a number of environmental factors and how well organisms grow. �Environments factors (living or nonliving) can either help an organism grow or prevent it from growing. �Some factors could be temperature, amount of rain, or the quality of the air or water.

Preferred Environmental Conditions �Each organism has a set of preferred environmental conditions. �The isopods we observed preferred to be in a dark and wet environment. �That’s why the isopods tried to get under the black construction paper roof on our terrarium.

Range of Tolerance �Organisms have ranges of tolerance for environmental factors. �The range will be the high and low extremes of tolerance for an environmental factor. �Organisms have specific requirements for successful growth, development and reproduction. �Example: There may be a coldest temperature and hottest temperature an animal can survive in their environment. That is their range of tolerance.

Optimum Conditions �Conditions that are most favorable for an organism to survive, grow and reproduce. �This optimum is somewhere WITHIN the RANGE OF TOLERANCE for that organism. �If an animal has a range of tolerance for temperature of 0 -85 degree F somewhere within that temperature range will be the temperature that the animal grows BEST.