Transcript Groups of living things interact within ecosystems.

CHAPTER
NEW CHAPTER
Interactions within Ecosystems
the BIG idea
Living things within an ecosystem interact with each other
and the environment.
13.1
Groups of living things interact within ecosystems.
13.2
Organisms can interact in different ways.
13.3
Ecosystems are always changing.
CHAPTER OUTLINE
CHAPTER RESOURCES
13.1
CHAPTER HOME
KEY CONCEPT
Groups of living things interact within
ecosystems.
• Members of the same
species form a
population with in a
habitat.
• Each species has a
distinct role with in a
habitat. This is its
niche.
VOCABULARY
species
population
habitat
niche
community
CHAPTER
RESOURCES
SECTION
OUTLINE
13.2
CHAPTER HOME
KEY CONCEPT
Organisms can interact in different ways.
Organisms within a community interact with each
other in many ways. Some are predators, some
are prey. Some compete with one another, some
cooperate. Some species form symbiotic
relationships with other species:
VOCABULARY
predator
prey
competition
cooperation
symbiosis
mutualism
Mutualism
benefits both
Commensalism
benefits one, other unaffected
commensalism
parasitism
CHAPTER
RESOURCES
Parasitism
benefits one, harms other
SECTION
OUTLINE
13.3
KEY CONCEPT
CHAPTER HOME
Ecosystems are always changing.
VOCABULARY
Primary Succession
In a barren area, a new community is established with
pioneer species, like mosses, that do well with little or no
soil. Mosses eventually give way to coniferous trees.
limiting factor
carrying capacity
succession
pioneer species
CHAPTER
RESOURCES
SECTION
OUTLINE
13.3
KEY CONCEPT
CHAPTER HOME
Ecosystems are always changing.
VOCABULARY
Secondary Succession
When a disturbance damages a community but soil
remains, the community gets reestablished from seeds
and roots left behind. Grasses grow, then small shrubs,
and eventually trees.
limiting factor
carrying capacity
succession
pioneer species
CHAPTER
RESOURCES
SECTION
OUTLINE
13.3
KEY CONCEPT
CHAPTER HOME
Ecosystems are always changing.
VOCABULARY
Secondary Succession
When a disturbance damages a community but soil
remains, the community gets reestablished from seeds
and roots left behind. Grasses grow, then small shrubs,
and eventually trees.
limiting factor
carrying capacity
succession
pioneer species
SIMULATION
Simulate the carrying
capacity of an area for a
population of deer.
CHAPTER
RESOURCES
SECTION
OUTLINE
13.1
KEY CONCEPT
CHAPTER HOME
Groups of living things interact within
ecosystems.
I. Groups of living things interact within ecosystems.
VOCABULARY
species
A. Organisms occupy specific living areas.
1. Populations
population
habitat
2. Habitats and Niches
niche
3. Communities
community
B. The environment can be organized into five
levels.
C. Patterns exist in populations.
1. Patterns in Living Space
2. Patterns in Time
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
13.2
KEY CONCEPT
CHAPTER HOME
Organisms can interact in different ways.
II. Organisms can interact in different ways.
A. Organisms interact in different ways.
1. Predator and Prey
2. Competition
3. Cooperation
B. The survival of one species might depend on
another species.
VOCABULARY
predator
prey
competition
cooperation
symbiosis
mutualism
1. Both Species Benefit
commensalism
2. One Species Benefits
parasitism
3. One Species Is Harmed
C. Interactions in an ecosystem are complex.
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
13.3
KEY CONCEPT
CHAPTER HOME
Ecosystems are always changing.
III. Ecosystems are always changing.
VOCABULARY
limiting factor
A. Populations change over time.
carrying capacity
1. Population Growth and Decline
succession
2. Maintaining a Balance
B. Ecosystems change over time.
pioneer species
1. Primary Succession
2. Secondary Succession
3. Patterns of Change
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
CHAPTER HOME
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