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23 Cards in this Set

  • Front
  • Back
4 Ecological Layers
Atmosphere (gas)
Hydrosphere (water)
Lithosphere (crust)
Ecosphere (Where Life Exists)
2 Parts of the Atmosphere
Troposphere (17km)
Stratosphere (17-48 km)
Definition of Ecology
The Study of Life
The Study of Organism's Home and the relationship between that organism & the environment
Definition of Species
Group of organisms, look alike; interbreed
Definition of Population
all members of same species living together at same time/place
Definition of Community
Many populations living together at same time/place
Definition of Ecosystem
Several Communities interacting with each other and the abiotic environment at the same time/place
Energy Flow
From sun into environment as high quality energy, out of ecosystem as low quality heat energy
Material Cycles
abiotic nutrients recirculate in the ecosystem that travel in a closed cycle
Biogeochemical Cycle
Nutrients cycled from rock or atmosphere to living components and back.
Law of Conservation of Matter
Matter can be altered; but can not be created nor destroyed
First Law of Energy
Energy can not be created nor destroyed. Can be converted from one form to another
Second Law of Energy
Conversions result in energy lost as heat. [entropy]
Gross Primary Production
Total amount of solar energy converted to biomass per time period
Net Primary Production
Amount of energy stored by a plant and available to a consumer per unit of time (kcal/m2/yr)
Law of Tolerance
Individuals differ in ability to tolerate each survival factor in an environment. If upper/lower limits are exceeded, can result in death!
Competitive Exclusion Principle
If two species occupy same habitat and have same role, one will force the other into extinction
Environmental Resistance
Biotic + Abiotic factors combine to limit population growth
Carrying Capacity
#s of individulas the environment can support. Determined by food, water, nesting sites, cover, climate, space, etc.
Definition of Succession
is orderly and often predictable replacement of one community by another in the absence of a disturbance
Definition of Biotic Potential
ability to reproduce max # of offspring. genetically determined/environmentally realized
Potential Energy
Energy in Object at Rest
Disorganization of Heat Energy... Chaos!