lecture 9 Flashcards Preview

ecology > lecture 9 > Flashcards

Flashcards in lecture 9 Deck (33)
Loading flashcards...
31

Resource-based

different life history strategies are favoured under varying abundances of
resources

32

If resources are unlimited

– Low competition among individuals within a population
– Population growth (“intrinsic rate of increase”, r) is at its maximum
• adaptations will enhance (selection will favour) rapid population growth
Reproduction >> Growth/Survival = r-selected

33

If resources are limited

– High competition among individuals within a population
– Population growth is low - population is at “Carrying Capacity”, K
• adaptations will enhance (selection will favour) competitive ability Growth/Survival >> Reproduction = K-selected