Unit 3 Ecosystems Chapter 6 & 7.

Slides:



Advertisements
Similar presentations
Unit 3 Ecosystems Chapter 6 & 7.
Advertisements

Energy Flow Through the Ecosystem
Chapter 6 Life Systems.
Food chains, food webs and the transfer of energy
Unit 3: Ecosystems Chapter 6 – Part 1 Pg
Unit 3 Ecosystems Chapter 6. Part 1 The Web Of Life p. 92 & Food Relationships p. 93 Questions #3-9 in the book.
1 Energy Flow Through an Ecosystem Food Chains, Food Webs, Energy Pyramids.
What is a Food Chain? Food Chain A food chain is the path by which energy passes from one living thing to another.
Feeding relationships
Unit 3 Ecosystems.
Autotrophs/Producers A groups of organisms that can use the energy in sunlight to convert water and carbon dioxide into Glucose (food) Autotrophs are.
Ecology The study of the interaction of living things with their environment.
Energy Flows Trophic Levels and Food Pyramids. Autotrophs A groups of organisms that can use the energy in sunlight to convert water and carbon dioxide.
Living Things! Factors that affect living things are: Biotic factors – things that are alive or were alive (other organisms) Abiotic factors – things that.
Notes 1 – Food Chains SCI 10 Ecology.
Ecology. What is Ecology? Ecology is the study of interactions among organisms, and between organisms and their environment. Ecology is the study of interactions.
Food Chain and Food Webs
Living Things! Factors that affect living things are: Biotic factors – things that are alive or were alive (other organisms) Abiotic factors – things.
10/30 - 6th Grade Agenda Learning Objective: to understand that almost all kinds of animals’ food can be traced back to plants and that the sun is often.
Energy Flow: Autotrophs
SECTION 2.1 ENERGY FLOW IN ECOSYSTEMS. HOW DOES ENERGY FLOW IN AN ECOSYSTEM?  Energy flow is the transfer of energy from one organism to another in an.
Food Chains and Food Webs.
Interactions in Ecosystems
Food Chains & Food Webs. Autotrophs A groups of organisms that can use the energy in sunlight to convert water and carbon dioxide into Glucose (food)
Vocabulary: Photosynthesis, Chemosynthesis Food Chain Food Web Energy Pyramid.
NUTRITION AND ENERGY FLOW CHAPTER 2.2 Martin 2010/2011.
Food Chains/Food Webs. How Organisms Interact Autotrophs – Organisms that use energy from the sun or energy stored in chemical compounds. These types.
Unit 3 Ecosystems Powerpoint #1 December.
Ecosystems An ecosystem consists of all the organisms living in an area and the nonliving features of their environment.
Autotrophs A groups of organisms that can use the energy in sunlight to convert water and carbon dioxide into Glucose (food) – They use the process.
Ecology.  Ecology is the study of how living things interact with other living things in their environment in various ways.
Food Chains, Food Webs, and the Transfer of Energy
Ecosystems Part 2 Trophic Levels.
Food Chains and Food Webs.
Food Webs and energy transfer through an ecosystem
Food Chains and Food Webs.
Unit 3 Ecosystems Chapter 6 & 7.
#22 Food Chains, Webs, and Trophic Levels
Ecology 1/22-23/2013.
FEEDING RELATIONSHIPS: How do organisms obtain their energy?
Producers, Consumers and Decomposers
Autotroph/Producer Make their own food using the process of photosynthesis (converting sunlight and carbon dioxide into glucose and oxygen). All of the.
Energy Flow in Ecosystems
Energy Flow Through An Ecosystem
Energy Flow: Autotrophs
Sustaining Ecosystems
Unit 3 Ecosystems World Geography 3200.
Food Chains and Food Webs.
Food Webs and energy transfer through an ecosystem
Producers, Consumers and Decomposers
Energy Flow in Ecosystems
Energy Flow Through An Ecosystem
Chapter 10 Ecosystems p
Energy Flow in Ecosystems (cont.)
Food Chains and Food Webs.
Unit 3 Ecosystems Chapter 6 & 7
Energy Flow in Ecosystems
Food Chains and Food Webs.
Starter Name 3 abiotic factors and 3 biotic factors in the ecosystem on the right. What makes up an ecosystem?
Our Ecosystem….. The Circle of Life.
Day 2 SCI 10 Ecology.
Energy Flow in an Ecosystem
Energy Flow Through An Ecosystem
2.1 Energy Flow in Ecosystems
Ecosystems.
Energy Flow in Ecosystems
What do the arrows indicate?
Food Chains and Food Webs.
Food Chains and Food Webs.
Food Chains and Food Webs.
Presentation transcript:

Unit 3 Ecosystems Chapter 6 & 7

Questions #3-9 in the book Part 1 The Web Of Life p. 92 & Food Relationships p. 93 Questions #3-9 in the book

Define Ecosystem Ecosystem = the network of relationships (interactions) among living (plants, animals) and the non-living parts (soil, climate, water etc.) in an environment.

Differentiate the terms producers, consumers decomposers. P. 93 Other examples: Grasses Trees shrubs Water lilies Flowers Vegetables Fruits Producer = a plant which can synthesize carbohydrates using carbon dioxide and the sun’s energy. Actually “produce” their own food and food for the rest of the ecosystem

Differentiate the terms producers, consumers, decomposers. P. 93 Consumers = All those organisms that have to eat (consume) plants or animals to obtain their food.

Types of consumers Primary Consumers: Animals that eat producers. Also called 1st. order consumers. (Ex. Rabbit, squirrels, grouse, insects) Secondary Consumers: Animals that eat primary consumers. Also called 2nd. order consumers. (fox, owl, mink ) Tertiary Consumers: Animals that eat secondary consumers. Also called 3rd. order consumers. (Wolf, coyote, hawk)

Differentiate the terms producers, consumers, decomposers. P. 94 Examples: Worms Bacteria Fungi Protozoa Decomposers = Simple organisms that obtain their food from dead/decaying organisms and wastes.

Differentiate the terms food chain & food web. P. 94 Food chain = linear sequence representing the nutrition of various species from the simplest plant to the top carnivore. Food web = a series of interconnecting food chains in an ecosystem. Food web is more complex and is composed of several food chains Food web is a more realistic picture of an ecosystem.

Food Chain vs Food Web

Identify ALL examples of each trophic level. Producers Primary Consumers Secondary Consumers Tertiary Consumers Decomposers Shrubs, grass, trees Grasshopper, rabbit, deer, squirrel Mountain lion, snake, shrew, insect-eating bird, hawk Hawk, snake, mountain lion Bacteria, fungi

Give an example of a food chain from fig. 6.4. P. 95 Tree → insect insect eating bird hawk Producer Primary consumer 2nd order consumer 3rd order consumer Note: The arrows indicate the flow of energy & nutrients from one level to the next

Sample Food Chain

Draw an example of a food web containing humans. P. 94 Mosquito Hawk Cow Grass Man Decomposer Phytoplankton Fish

Draw an example of a food web containing humans. P. 94 Hawk Mosquito Cow fish Man Phytoplankton Grass Decomposer

What happens to energy? (Handout)

What happens to energy? 10-15% is stored: 85-90% is LOST or USED up: Available or transferred to other animals when it is eaten. 85-90% is LOST or USED up: maintaining the organism (Ex. metabolism, reproduction etc.) And as heat!!! IF NOT EATEN: Energy is transferred to the decomposers.

What happens to the energy at the decomposer level? Same thing….ALMOST !? Most is lost or used up through heat and maintaining the organism. If eaten (Ex. A mushroom) energy gets passed on. HOWEVER, once a decomposer dies…. The energy is LOST FOREVER!!!

Summary – Energy & Food Webs The ultimate source of energy (for most ecosystems) is the sun The ultimate fate of energy in ecosystems is for it to be lost as heat, metabolism, reproduction, etc.. Energy and nutrients are passed from organism to organism through the food chain as one organism eats another. Decomposers remove the last energy from the remains of organisms. Inorganic nutrients are cycled, energy is not.

Summary – Energy & Food Webs Question #14, 15 & #16 p. 98 make perfect review questions for the test.