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Chapter 4: Population and Communities - Coggle Diagram
Chapter 4: Population and Communities
Population Growth Curves
Exponential curve (J-curve)
Logistic curve (S-curve)
Constant curve
Population Dynamics
Carrying Capacity (K)
Pattern of change equation
Population is a group of species in a certain area
Reproductive Strategists
R-strategists: environmentally less stable, small life span, less parental care, more offspring
K-strategists: more stable environmentally, long life span, few offspring, more parental care
Population Limit
Density Independence- population limited by abiotic factors regardless of number
Top down regulation- population control by predation
Density Dependence- limits increases as population density increases
Bottom up regulation- population control by resource scarcity
Competition Types
Interspecific- resource competition between different species
Intraspecific- resource competition between same species
Community Interaction Types
Neutralism
Competition
Ammensalism
Mutualism
Commensalism
Evolution
Selective pressure is an environmental resistance factor
Natural selection- specific traits favoring survival of certain individuals