Population dynamics

Question 1

Causes of fluctuations in population

Answer 1

• conservation
• fisheries management
• pest management
• abiotic external factors
• scramble competition
• predator prey interaction
• disease dynamics
• metapopulation

Question 2

Abiotic external factors example

Answer 2

Warm winter weather associated with pop declines in alpine butterflies

Question 3

Scramble competition

Answer 3

Populations can fluctuate all by themselves in constant environment

Question 4

Predator-prey interactions

Answer 4

Predator cycle lags behind prey

Question 5

Disease dynamics: Herd immunity

Answer 5

for diseases with lasting immunity

Question 6

Metapopulation

Answer 6

local extinctions and (re-)colonisations
patches become occupied and inactive in cycles