UW ESRM 150: Wildlife In The Modern World; Midterm Exam
With Complete Solutions
Wildlife - ANSWER Non domesticated animals, living outside the matrix.
Lacey Act - ANSWER 1900
First U.S federal law put in place to protect wildlife
Prohibits the the trade of wildlife that have been taken illegally, with criminal and civil
penalties
Overexploitation - ANSWER Harvesting species from the wild at rates faster than natural
populations can recover
EX: Passenger Pigeons & American Bison
Lambda - ANSWER Upsidedown greek "y"
Population growth rate from one point in time to another.
(N_(t+1))/(N_t)
Carrying capacity (K) - ANSWER The Maximum population size the environment can sustain
indefinitely (fluctuates).
Intraspecific vs. Interspecific interactions - ANSWER Intraspecific = Interactions of the same
species
, Ex: Male vs. Male mating competition
Interspecific = Interactions of differing species
Trophic interaction - ANSWER Primary Producers->Primary Consumers->Secondary
Consumers->Tertiary Consumers
As you progress through, the energy levels decrease.
Conversion efficiency - ANSWER The efficiency at which energy is transferred from one
trophic level to another, approximately 10%
Food Web - ANSWER A visual representation of the complex network of ecological
relationships.
Census - ANSWER Complete count of a population
Assumed to be completely accurate
Very costly for an imperfect tally
Survey - ANSWER A sample is taken to ESTIMATE the whole population
Keystone Species - ANSWER A species that has a disproportionately large impact on its
environment
With Complete Solutions
Wildlife - ANSWER Non domesticated animals, living outside the matrix.
Lacey Act - ANSWER 1900
First U.S federal law put in place to protect wildlife
Prohibits the the trade of wildlife that have been taken illegally, with criminal and civil
penalties
Overexploitation - ANSWER Harvesting species from the wild at rates faster than natural
populations can recover
EX: Passenger Pigeons & American Bison
Lambda - ANSWER Upsidedown greek "y"
Population growth rate from one point in time to another.
(N_(t+1))/(N_t)
Carrying capacity (K) - ANSWER The Maximum population size the environment can sustain
indefinitely (fluctuates).
Intraspecific vs. Interspecific interactions - ANSWER Intraspecific = Interactions of the same
species
, Ex: Male vs. Male mating competition
Interspecific = Interactions of differing species
Trophic interaction - ANSWER Primary Producers->Primary Consumers->Secondary
Consumers->Tertiary Consumers
As you progress through, the energy levels decrease.
Conversion efficiency - ANSWER The efficiency at which energy is transferred from one
trophic level to another, approximately 10%
Food Web - ANSWER A visual representation of the complex network of ecological
relationships.
Census - ANSWER Complete count of a population
Assumed to be completely accurate
Very costly for an imperfect tally
Survey - ANSWER A sample is taken to ESTIMATE the whole population
Keystone Species - ANSWER A species that has a disproportionately large impact on its
environment
