1. What was the number of wolves and moose in 1980? BELL RI
NGER
PredationWolf – PredatorMoose - Prey
2. What is the relationship between the Wolves and Moose
50 wolves and 800 moose
LIMITING FACTORS AND ECOLOGICAL SUCCESSION
Objectives:• Compare and contrast factors
that limit population growth.
• Sequence the stages of ecological succession.
LIMITING FACTORS
Limiting Factors: any biotic or abiotic factors that cause a decrease in population growth.
Limiting Factors
Density Dependent Density Independent
Density Independent limiting factors: Affect all populations in a similar way independent of population size. (Draught, wild fire, volcanic eruptions, hurricane, deforestation)
Density Dependent limiting factors: Factors that depend on population size. (Competition, predation, food, disease, and parasitism)
ECOLOGICAL SUCCESSION
PRIMARY SUCCESSION SECONDARY SUCCESSIONColonization of barren land were there are no living organisms (land formed from volcano eruption)
The sequence of changes that take place after an existing community is severely disrupted. Land that contains soil and life. (Forest fire, flood, hurricane, tornado)