sev2d insavie sep0904 Lesson

My Class Expectations

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01-28-2025

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MR. Allen

Environmental

Science

Understanding Biodiversity:

Species Types and

Ecosystem Resistance

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Fourth offense: Academic coach submits discipline referral to discipline AP

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Standard

SEV2. Obtain, evaluate, and
communicate information to construct
explanations of stability and change in
Earth’s ecosystems.

d. Construct an argument to support a
claim about the value of biodiversity in
ecosystem resilience including
keystone, invasive, native, endemic,
indicator, and endangered species.

Learning Target

By the end of the lesson I can be

able to determine the role of
endemic species and invasive

species in an ecosystem.

Vocabulary terms
(standard essential)

1.Native Species: species that naturally occur in a particular region or
ecosystem without human intervention.
2.Invasive Species: non-native species that, when introduced to a new
environment, can cause harm to native species, ecosystems, or human
activities.
3.Endemic Species: species that are found exclusively in a specific
geographic area and are not naturally found anywhere else.
4.Habitat: the natural environment in which a particular species lives, including
factors such as food, water, shelter, and space.
5.Adaptation: a characteristic or trait that has evolved in a species over time,
allowing it to better survive and reproduce in its environment.

Native Species: The Local Heroes

Native species are plants and animals that have naturally evolved in a specific
area over thousands of years. They are well-adapted to local conditions and play
crucial roles in maintaining ecosystem balance.

Key points:

●Definition: Organisms that occur naturally in an area

●Examples: Redwood trees in California, Kangaroos in Australia

●Benefits: Support local food webs, soil health, and biodiversity

Endemic Species: Unique to a Place

Endemic species are found nowhere else on Earth except in a particular location or
region. They are often highly specialized and vulnerable to changes in their
environment.

Key characteristics:

●Limited geographic range

●Evolved unique adaptations

●Often at higher risk of extinction

Examples:

●Galapagos Giant Tortoise

●Madagascar's lemurs

●Australia's koalas

Invasive Species: Unwelcome Guests

Invasive species are non-native organisms that, when introduced to a new
environment, cause harm to the ecosystem, economy, or human health.

Impact on ecosystems:

●Outcompete native species for resources

●Disrupt food chains and habitats

●Alter ecosystem processes

Examples:

●Kudzu vine in the southeastern United States

●Zebra mussels in North American lakes

●Cane toads in Australia

Endangered Species: On the Brink

Endangered species are plants and animals at risk of extinction due to various
threats, including habitat loss, pollution, and climate change.

Importance of protection:

●Maintain biodiversity

●Preserve ecosystem functions

●Protect genetic resources

Conservation efforts:

●Habitat preservation

●Captive breeding programs

●Legal protections (e.g., Endangered Species Act)

Ecosystem Resistance: Nature's Defense

Ecosystem resistance refers to the ability of an ecosystem to withstand
disturbances and maintain its structure and function.

Factors influencing resistance:

●Biodiversity: More diverse ecosystems are often more resistant

●Species interactions: Complex food webs can help buffer against changes

●Genetic diversity: Variation within species can aid adaptation

How to support ecosystem resistance:

●Protect native habitats

●Control invasive species

●Promote sustainable practices

5 out of 5?
100% on the circle graph?.

​

Mastery 5 question challenge ready?

Match

Match the following types of biodiversity with what they measure:

• species diversity

• genetic diversity

• ecosystem diversity

how many species are in an area

how much variety there is in a species

how many different ecosystems there are

• how many species are in an area

• how much variety there is in a species

• how many different ecosystems there are

Multiple Choice

This type of biodiversity is important because it increases the chances that some members of a species will survive environmental changes.

• genetic diversity

• species diversity

• ecological / ecosystem diversity

Multiple Choice

This type of biodiversity is important because it increases the chances that species will find some place to live if abiotic factors change.

• genetic diversity

• species diversity

• ecological / ecosystem diversity

Multiple Choice

These species have no competitors and no natural predators where they are living.

• invasive species

• exotic species

• endemic species

• native species

Match

Match the following measures of biodiversity with what they measure.

• species abundance

• species richness

• species evenness

number of individuals of a species

number of species in a place

compare species-abundances in a place

• number of individuals of a species

• number of species in a place

• compare species-abundances in a place

Brain Break

Debate

arguments supporting the value of biodiversity in
ecosystem resilience, focusing on various species
classifications.
Duration: 10 minutes
Group Size: 4 students
Materials Needed:
•Index cards with species classifications (keystone,
invasive, native, endemic, indicator, and endangered)
•Timer
•Google slide

Debate

instruction

•Pairs quickly brainstorm examples of their assigned species types.

2.Argument Construction (3 minutes):

•Each pair develops an argument explaining how their assigned species types
contribute to ecosystem resilience and biodiversity.
•Students should consider:

•Specific roles of these species in their ecosystems
•Potential consequences if these species were removed
•Connections between their species types and overall biodiversity

Debate

instruction

•Pairs quickly brainstorm examples of their assigned species types.

2.Argument Construction (3 minutes):
There are three types of biomes:
Lotic ecosystem-
Tropical rainforest-
Coral reef-

. The links about each ecosystem and the environmental impact how will you over

come one of the three issues in these ecosystems, eutrophication, ocean

acidification, and deforestation

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Time to explore some virtual coral

reef rehabilitation

Independent

time

1.

2. Working to review for the
common assessment

2. Progress Learning

4. Fantastic four
“ time “

What are the two parts
for an ecosystem to
exist?

What is the four
level of an energy
pyramid

Show an example of an energy
pyramid that an ecosystem is
not going to be a sustainable
place.

What is the two main
abiotic parts of a biome

What are the three
roles of consumers?

What happens if one of the three
consumer levels goes missing?

What is the difference
between estuary and
fresh water lotic
ecosystem?

What is the
difference between
producer and
consumer?

What are the two types of
processes producers can use for
the base of energy in an
ecosystem

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