section 13-1 & 13-2 introducing ecology … · 13.1 ecologists study relationships / 13.2...
TRANSCRIPT
Section 13-1 & 13-2
“Introducing
Ecology”
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
Objectives
Students will be able to:
1.Summarize the levels of organization
that ecologists study by completing a
graphic organizer and writing a short
paragraph in their own words.
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
Section 13.1 KEY CONCEPT:
Ecology is the study of the relationships
among organisms and their environment.
• Ecology is the study of the
interactions among living things,
and between living things and
their surroundings.
Organism
Organism
• An organism is an
individual living thing
(such as an alligator)
Organism
Organism
Population
Population
• A population is a group
of the same species
that lives in one area.
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
Organism
Organism
Population
Population
Community
Community
• A community is a group
of different species that
live together in one area.
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
What level of organization
describes a flock of pigeons in a
park? Population
Organism
Organism
Population
Population
Community
Community
Ecosystem
Ecosystem
• An ecosystem includes all of
the organisms as well as the
other nonliving things in a
given area. (such as climate,
soil, water, rocks)
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
Can you list the nonliving things
in this ecosystem?
Organism
Organism
Population
Population
Community
Community
Ecosystem
Ecosystem
Biome • A biome is a major regional or global
community of organisms
characterized by the climate
conditions and plant communities
that thrive there.
Organism
Organism
Population
Population
Community
Community
Ecosystem
Ecosystem
Biome • Fill in the power notes 13.1
• Levels of Organization
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
BIOMES
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
Tundra Desert
Tropical Grasslands
Temperate
Taiga
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
Summarize the levels of organization
by completing the graphic organizer
using your Power Notes.
Organism Population
Community
Ecosystem
Biome
• Fill in the power notes 13.1
• Levels of Organization
Page 2
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
Practical Application
Follow Mr. Benitez.
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
Section 13.2 KEY CONCEPT:
Every ecosystem includes
both living and nonliving
factors.
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
Objectives
Students will be able to:
1.Identify biotic and abiotic factors in an ecosystem by
completing a graphic organizer and writing a short
paragraph in their own words.
2.Describe how a change in one factor in an ecosystem
can affect others by completing a graphic organizer and
writing a short paragraph in their own words.
• Biotic factors are living things.
• Remember, BIO means LIFE! (like
Biology)
–plants
–animals
–fungi
–bacteria
• Abiotic factors are nonliving things.
• Remember, “A” means NOT (like
Asymmetrical means not symmetrical)
–sunlight
–temperature
–wind
–Moisture –Water, rain, clouds
–soil
Keystone
• Changing one factor in an ecosystem
can affect many other factors.
• A keystone species is a species that
has an unusually large effect on its
ecosystem.
If you moved this stone the
whole arch would fall down
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
A keystone species is a plant or animal that plays a
unique and crucial role in the way an ecosystem
functions.
Without keystone species, the ecosystem would be
dramatically different or cease to exist altogether.
Example: Wolves: Being a top predator, wolves are
important in many habitats. Wolves keep deer
populations in check and too many deer will eat
small trees, which leads to fewer trees. In turn, there
would be fewer birds and beavers and the whole
ecosystem would change.
creation of
wetland
ecosystem
increased waterfowl
Population
increased
fish
population nesting
sites for
birds
keystone species
• Keystone species form and
maintain a complex web of
life.
a species that plays a
critical role in
maintaining the
structure of an
ecological community
the variety of
living things in
an ecosystem
• Listen, look fill in as we go – there will be a check
your answer slide at end of section
Biotic
(living things)
plants animals
Abiotic
(non-living)
sunlight moisture
temperature soil
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic
include
Research Methods
Listen and fill in
as we go… there
will be a check
your answers
place at the end.
• Listen, look fill in as we go – there will be a check
your answer slide at end of section