| Types and Conditions |
| Extremophiles |
| Types: Defintions: Alkaphile: An organism with optimal growth at pH values above 10 Barophile: An organism that lives optimally at high hydrostatic pressure. Endolith: An organism that lives in rocks. Extreme Acidophile:An organism with a pH optimum for growth at, or below, pH 3. Halophile: An organism requiring at least 0.2M salt for growth. Hyperthermophile: An organism having a growth temperature optimum of 80 degree celcius or higher. Oligotroph: An organism with optimal growth in nutrient limited conditions. Psychrophile: An organism having a growth temperature optimum of 15 degree celcius or lower, and a maximum temperature of 20 degree celcius. Toxitolerant: An organism able to withstand high levels of damaging agents. For example, living in water saturated with benzene, or in the water-core of a nuclear reactor. Xerotolerant: An organism capable of growth at low water activity. For example, extreme halophile or endolith. |
| Conditions: pH pH Rocks pH Salt Hot Limited Nutrients Cold Damaging Agents Low amount of water |
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