Unit XI: Ecology and Animal Behavior. Ecological interactions affect how organisms evolve, and evolutionary change in turn affects ecological relationships. Ecology. Ecology the study of the relationships between organisms and their environment + two types of interactions
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Unit XI: Ecology and Animal Behavior
Ecological interactions affect how organisms evolve, and evolutionary change in turn affects ecological relationships.
Sweden- relatively stable population growth
Mexico- rapidly growing population
United States- relatively stable population growth
Type I: most individuals die old
Type II: length of survivorship is random
Type III: most individuals die young
Which organisms are…
What about in the plant kingdom?
Reservoirs: oceans, air, groundwater, glaciers
Assimilation: plants absorb from soil; animals eat/drink
Release: plants transpire; animals/plants decompose
Reservoirs: atmosphere (CO2), fossil fuels, peat, cellulose
Assimilation: plants via photosynthesis; consumers
Release: respiration and decomposition; burn fossil fuels
Reservoirs: atmosphere (N2); soil (ammonium, ammonia, nitrite, nitrate)
Assimilation: plants absorb from soil; animals consume plants/animals
Release: denitrifying and detrivorous bacteria; animal excretion
Assimilation: plants absorb from soil (phosphate); consumers
Release: decomposition; excretion in waste products