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Chapter 25 (Plants in Relationship to Their Habitats (Abiotic Components…
Chapter 25
Plants in Relationship to Their Habitats
Abiotic Components of the Habitat
Climate is critically important to organisms
The extreme temperature of a climate is more important than the average temperature
Tolerance Range
between the low and high
Soil factors
Soil is formed by the breakdown of rock
Pioneers are the first plants to invade a new soil
Biotic Components of the Habitat
The plant Itself
Other plant species
Mutualism
Interaction is beneficial for both organisms
Competetion
Forms of Ecological Relationships
Disadvantageous and going after same things
Habitat
the set of conditions in which an organism inhabits its life cycle
Operational Habitat
Aspects of the habitat that affect a plant
Structure of Ecosytems
Physiognomic Structure
Physical Shape and Size of organisms in relation to one another
Temporal Structure
Changes that an ecosystem experiences with time
Species Composition
Number and diversity of species in an ecosystem
Trophic Levels
Feeding Levels in an ecosystem
K Selection
Graph Example
Conditions of a crowded habitat
Population is almost at carrying capacity
Almost every spot is suitable for seed growth
The Structure of Populations
Geographic Distributions
Boundaries of the Geographic Range
Soil factors can be a big factor in geographic ranges
A Limiting factor can estric the size of a population in an ecosystem
Food, Water, Predators, and Diseases
Examples of Limiting Factors
Age Distribution
Demography
Relative Proportions of young, middle Aged, and old Individuals.
Two factors affect rate of population growth
Generation Time
Time between Birth of an individual and Birth of its offspring
Intrinsic Rate of Natural Increase
Number of offspring produced that can produce more offspring
R Selection
Graph Example
A disturbance produces R conditions
Disturbed habitat will quickly change back into a widely inhabited one
