SECTION ECOLOGISTSSTUDYRELATIONSHIPS 13.1 Power No tes

SECTION ECOLOGISTS STUDY RELATIONSHIPS

13.1 Power Notes

Levels of Organization CHAPTER 13
Principles of Ecology

Copyright © McDougal Littell/Houghton Mifflin Company. Research Methods
include

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SECTION BIOTIC AND ABIOTIC FACTORS

13.2 Power Notes

Ecosystem CHAPTER 13
Principles of Ecology
includes

such as such as

Complex Relationships Within an Ecosystem
Biodiversity is...

Copyright © McDougal Littell/Houghton Mifflin Company. A keystone species is...

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SECTION ENERGY IN ECOSYSTEMS

13.3 Power Notes

Producers and Consumers Also Called Description CHAPTER 13
Type Principles of Ecology

Processes by Which Producers Obtain Energy

Copyright © McDougal Littell/Houghton Mifflin Company. Photosynthesis Both Chemosynthesis

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SECTION FOOD CHAINS AND FOOD WEBS

13.4 Power Notes

Types of consumers: CHAPTER 13
1. Principles of Ecology

2.

3.

4.
A food web shows:

Add arrows: Trophic Level
Producer
Copyright © McDougal Littell/Houghton Mifflin Company.
Primary consumers
Unit 5 Resource Book
McDougal Littell Biology Secondary consumers
Tertiary Consumer

Power Notes 15

SECTION CYCLING OF MATTER

13.5 Power Notes

Oxygen cycle: Carbon cycle: CHAPTER 13
Principles of Ecology

Hydrologic cycle: Phosphorus cycle:
Nitrogen cycle:

Copyright © McDougal Littell/Houghton Mifflin Company.

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SECTION PYRAMID MODELS

13.6 Power Notes

Trophic Levels CHAPTER 13
Principles of Ecology

Energy pyramid: Two other pyramid models:
1.
Copyright © McDougal Littell/Houghton Mifflin Company. Measures:

2.
Measures:

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