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ES 5.2 Lesson Ecosystem Response to Change

ES 5.2 Lesson Ecosystem Response to Change

Assessment

Presentation

Physical Ed

5th Grade

Practice Problem

Easy

Created by

Robert Oliver

Used 5+ times

FREE Resource

10 Slides • 7 Questions

1

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© 2017 Cengage Learning. All Rights Reserved.

Environmental Science, 1e
SUSTAINING YOUR WORLD
G. TYLER MILLER | SCOTT E. SPOOLMAN

5

Species Interactions, Ecological

Succession, and Population

Control

2

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• Ecological succession

– The normal, gradual change in species composition in a given

geographic area

– Species composition of an ecosystem or community can change in

response to changing environmental conditions

• Examples: fires, volcanic eruptions, climate change, clear-cutting

– Primary and secondary succession are examples of natural

ecological restoration.

5.2 How Do Ecosystems Respond to Changing
Conditions?

3

Multiple Choice

Species composition in an area changes in response to _________ environmental conditions.

1

harsh

2

changing

3

mild

4

constant

4

Multiple Choice

Ecological Succession is the normal ________ change in species composition in an area.

1

sudden

2

gradual

3

rapid

4

nonexistent

5

6

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• The gradual establishment of biotic communities in lifeless

areas where there is no soil in a terrestrial ecosystem or no
bottom sediment in an aquatic system

– Takes hundreds to thousands of years

Primary Ecological Succession

7

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Primary Ecological Succession, Illustrated

8

Drag and Drop

succession establishes life in lifeless areas with no soil or sediment. It takes ​
.
Drag these tiles and drop them in the correct blank above
Primary
hundreds to thousands of years
Secondary
millions of years
several months

9

10

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• Occurs where communities or ecosystems have been

disturbed, removed, or destroyed, but retain some soil or
bottom sediments

• An important ecosystem service

– Enriches biodiversity of communities and ecosystems by increasing

species diversity and interaction among species

• Doesn’t always follow a predictable path

Secondary Ecological Succession

11

Drag and Drop

succession establishes life in lifeless areas with soil or sediment. It ​
follow a predictable path.
Drag these tiles and drop them in the correct blank above
Secondary
doesn't always
will always
Primary

12

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• Promotes population control

– Increases the complexity of food webs

– Enhances energy flow

– Increases nutrient cycling

Secondary Succession Also Enhances Sustainability

13

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Secondary Ecological Succession, Illustrated

14

Drag and Drop

Secondary succession enriches ​
which enhances ​
.
Drag these tiles and drop them in the correct blank above
biodiversity
sustainability
extinction
climate change

15

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• Arise out of complex processes that result in some degree of

stability or sustainability

– Withstand external stress in response to changing environmental

conditions

• Two aspects of stability/sustainability:

– Inertia (persistence) is ability of ecosystem to survive moderate

disturbance

– Resilience is ability of ecosystem to be restored through secondary

succession after severe disturbance

Living Systems Are Sustained Through Constant Change

16

Drag and Drop

is the ability of an ecosystem to be restored through secondary succession.

, or persistence, is the ability of an ecosystem to survive moderate disturbances.
Drag these tiles and drop them in the correct blank above
Resilience
Inertia
Succession

17

Labelling

Label the type of succession.

Drag labels to their correct position on the image

Tertiary

Primary

Secondary

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© 2017 Cengage Learning. All Rights Reserved.

Environmental Science, 1e
SUSTAINING YOUR WORLD
G. TYLER MILLER | SCOTT E. SPOOLMAN

5

Species Interactions, Ecological

Succession, and Population

Control

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