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21 Cards in this Set

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  • Back
autecology
study of a single speices as it relates to its environment
physiological ecology
study of the physiological processes of a biota as it relates to its environment
Justus Von Liebig
Postulated the LAW OF THE MINIMUM, chemist, discovered N as essential plant element
Law of the minimum
Growth is limited by the nutrient that is available in the least amount
Blackman, 1905
limitations of gas exchange, cant focus on a single factor when many factors are limiting
Shelford
species tolerance ranges for environmental factors - distr. is limited by narrowest tolerance range
Climate
characteristic long-term means of light, temperature and water
Weather
short-term and local admospheric conditions. climate is the mean of weather
Black Body
a perfect emitter and absorber of radiation. Ex. the sun
Gray body emitter
imperfect absorber of radiation, so spectral quality changes. Ex the earth and the influence of the atmosphere
Irradiance
amount or power of radiation incident on a surface (W m-2)
Fluence
total energy recieved on a spherical surface
Joule
a measure of work or energy, the amount of work required to produce one Watt for one second
Calorie
the amount of energy needed to heat 1g of water one degree C
Solar constant
1372 w m-2 s-1
Albedo
reflected solar radiation, 30% on earth
Factors changing incoming energy
solar output, atmospheric absorbance, and local position
Thermal equator
belt which recieves most radiation, moves seasonally
adiabatic cooling
occurs when the pressure of a substance is decreased as it does work on its surroundings. 3F per 100 ft.
Coriolis Effect
deflections of air masses
adiabatic lapse rate
which refer to the change in temperature of a parcel of air as it moves upwards (or downwards) without exchanging heat with its surroundings. The temperature change that occurs within the air parcel reflects the adjusting balance between potential energy and kinetic energy of the molecules of gas that comprise the moving air mass. There are two adiabatic rates