Chapter 3 & 4 Lecture Notes

3.1 What is Ecology?

 

Define Vocabulary

  • Biosphere
  • Species
  • Population
  • Community
  • Ecology
  • Ecosystem
  • Biome
  • Biotic factor
  • Abiotic factor

3.1 What is Ecology?

 

  • When biologists want to talk about life on a global scale, they use the term biosphere.
  •  
  • The biosphere contains every organisms from bacteria all the way up to humans.

Levels of Organizing organisms

  Individual organism (species) is part of a Population that lives in a Community that is part of an Ecosystem that makes up Biomes that is a par of the Biosphere.

 

Biotic factor: Any living part of the environment

Abiotic factor: Any nonliving part of the environment.

  

Examples of Abiotic factors include : Rocks, moutains, soil, water, wind, air, sunlight, clouds etc.

Assessment

 Complete 3.1 Assessment

You may answer on the same paper as your notes.

Answer all questions in a complete sentence.

We will go over the answers together in class.

 

Chapter 3.2
Energy, Producers & Consumers

 

Define Vocabulary

  • Autotrophs
  • Primary producer
  • Photosynthesis
  • Chemosynthesis
  • Heterotrophs
  • Consumer
  • Carnivore
  •  Herbivore
  • Scavenger
  • Omnivore
  • Detritivore

Primary Producers

 

Organisms need energy for growth, reproduction and to carry out their metabolic processes.

Energy is needed to sustain life. No organism can create energy.

Sunlight is the ultimate source of energy on Earth.

Primary producers are the  1st producers of energy rich compounds that are later used by other organisms. They are essential to the flow of energy through the biosphere.

Energy from the Sun

 

The best known primary producers that harness the energy from the sun through a process called Photosynthesis.

Without photosynthetic producers the air would not contain enough oxygen.

Algae provides oxygen in freshwater ecosystem.

 

Life without Light

 Read & Discuss “Life without Light” Page 70

 

Consumers

 Animals, Fungi and many bacteria cannot directly harness energy from the environment like primary producers.

Heterotrophs must acquire energy by ingesting other organisms.

 

Types of Consumers
(Use other examples other than what is in your book)

 

Consumer:                                                                         Example:

 Carnivore-

Scavenger-

Herbivore-

Decomposer-

Detritivore-

Omnivore-

Assessment

 

Complete 3.2 Assessment

You may answer on the same paper as your notes.

Answer all questions in a complete sentence.

We will go over the answers together in class.

 

Chapter 4
Ecosystems & Communities

 Define Vocabulary for Chapter 4.1

 

Weather

Climate

Microclimate

Greenhouse Effect

Weather & Climate

 Weather and climate both involve variations in temperature, precipitation* and other environmental factors.

Weather is the day-to-day condition of Earth’s atmosphere.

Climate is the average conditions over a long period of time.

*Keep in mind precipitation is not just rain, this includes any form of moisture that comes from the sky, such as……………….

 

Factors that affect Climate

 Global climate is shaped by many factors including; solar energy trapped in the biosphere, latitude and the transport of heat by winds and ocean currents.

 Read & discuss: “Solar Energy and the Green house effect pg. 97

Latitude & Solar Energy

 See Figure 4.2

Earth’s climate zones are produced by unequal distribution of the sun’s heat on Earth.

Polar regions (North & South Poles =less light= less heat)

Middle regions (Near equator = More light = more heat)

 

Heat Transport in the Biosphere

 Read & Discuss: “ Heat transport in the Biosphere” pg. 98

 Assessment

 

Complete 4.1 Assessment

You many answer on the same paper as your notes.

Answer all questions in a complete sentence.

We will go over the answers together in class.

Define Vocabulary for Chapter 4 sections 2 and 3 (See Homework tab for Quiz dates)