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22 Cards in this Set

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Force required to draw water from roots is provided by evaporation
Tension-Cohesion theory
Narrow range of environmental conditions to which an organism is suited.
Optimum
Lower level of euphotic zone. Lowest level of water or light where photosynthesis can balance respiration.
Compensation Point
Amount of light radiation that causes photosynthesis to reach a maximum level.
Saturation Point
Minimum moisture level of soil at which plants can obtain water.
Wilting point/coefficient
Amount of water soil can hold against gravity
Field capacity
Water potential generated by soil
Matric potential
Force by which water is held in soil by capillary and hygroscopic forces
Water potential
Referring to habitats with plentiful rainfall and well-drained soils
Mesic
Referring to habitats in which plant production is limited by the availability of water
Xeric
Rapid growth of algae in temperate lakes following the autumnal breakdown of thermal stratification and ixing of water layers
Fall bloom
Vertical mixing of water layers in temperate lakes in autumn following breakdown of thermal stratification
Fall overturn
Region within which surface currents of air meet near the equator and begin to rise under the warming influence of the sun.
Intertropical convergence
Tough,hard and often small leaves of drought-adapted vegetation
Sclerophyllous
Usually treeless plains, especially in southeastern Europe and Asia in regions of extreme temperature range and sandy soil.
Steppe
The narrow range of environmental conditions to which an organism is best suited
Optimum
Pertaining to or influenced by the soil
Edaphic
The range of conditions within which a species can survive
Ecological tolerance
Key component of understanding life histories of species?
Trade-offs in resource allocations
Give examples of allocation trade-offs.
Allocation to resource a precludes allocation to b. Larger seeds mean less.
Enviro changes. what can an organism alter?
Behavior, Development, physiology, or life history traits.
Relationship btwn phenotype of an individual and the environment
Reaction norm