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)