Energy in Ecosystems.

Slides:

Advertisements

Similar presentations

Energy Flow in Ecosystems

Advertisements

ECOLOGY Food Chains and Food Webs 1. Food chain Notes FOOD CHAINS AND FOOD WEBS Energy flows through an ecosystem in a one way stream, from primary producers.

Principles of Ecology.

5.1-communities and ecosystems

Food Webs and Energy Pyramids

ENERGY FLOW IN ECOSYSTEM How does energy flow in an ecosystem? How does energy flow in an ecosystem? What is an energy pyramid? What is an energy pyramid?

1 Energy Flow Through an Ecosystem Food Chains, Food Webs, Energy Pyramids copyright cmassengale.

Flow of Energy Through Ecosystems B-3.6. Energy Through Ecosystems  The flow of energy through ecosystems can be described and illustrated in food chains,

Energy Flow in the Ecosystem. Food chain – shows which organisms each which in an ecosystem.

Notes 1 – Food Chains SCI 10 Ecology.

Energy Flow in the Biosphere,

Energy Flow: Feeding Relationships

ENERGY FLOW IN ECOSYSTEM How does energy flow in an ecosystem? How does energy flow in an ecosystem? What is a trophic level? What is a trophic level?

Trophic Levels Definition - each step in a food chain or food web

Ecology The study of interactions of living things and their environments Abiotic factors – nonliving things in the environment Biotic factors – living.

Parts of the Ecosystem. What is Ecology?  Study of the interactions between organisms and their environment.

Feeding Relationships

HOW DOES ENERGY FLOW THROUGH AN ECOSYSTEM?  An ecosystem consists of all the organisms living and in an area as well as the nonliving parts of that environment.

Ecology Test # 2 Review.

Ecology. Energy Transfer All energy in an ecosystem comes from the sun There are 2 ways energy moves. – As organisms eat other organisms, energy is stored.

Food Chains, Food Webs, and Ecological Pyramids. A food chain is the simplest path that energy takes through an ecosystem. Energy enters from the sun.

FOOD CHAINS AND WEBS Do Now: Draw a food chain that includes the following organisms: Do Now: Draw a food chain that includes the following organisms:

Energy flow in the Ecosystem. Energy 1 st law of thermodynamics – energy can not be created or destroyed, only transformed from one form to another.

Ecological Pryamids and Energy Flow. Another way of showing the transfer of energy in an ecosystem is the ENERGY PYRAMID.

The Food Chain/Web. REVIEW  Every living thing needs energy in order to survive.  Every time animals do something (run, jump, move) they use energy.

Which of the organisms in the above diagram represents the Tertiary Consumer?

Ecosystems Part 2 Trophic Levels.

1. Please place guided reading in the basket. 2

Ecology Learning Objectives:

Food Chains, Food Webs, and Ecological Pyramids

ECOLOGICAL PYRAMIDS.

Agenda: Intro to Ecosystems Food webs & energy flow

ENERGY FLOW IN ECOSYSTEM

Energy Flow Through an Ecosystem

Ecology Chapter 2 Section 3

ENERGY FLOW IN ECOSYSTEM

Energy Flow Through an Ecosystem

#80 Food Chains, Webs, and Pyramids

DO NOW What is ecology? What are the two major parts that make up an organism’s environment? What are some biotic factors you see in the picture above?

Ecology Ecology is the scientific study of the interaction between organisms and between organisms and their environment.

Almost all energy on Earth comes from the sun.

Food Chains and Food Webs

Science 2200 Energy flow.

Energy Flow in Ecosystems

What do the solid arrows represent?

Starter What is a trophic level?

Food Web and Ecological Pyramid.

Ecology Williams.

3.3: Energy Flow in Ecosystems

Energy in the Ecosystem

Energy Flow in Ecosystems

Trophic Levels, Energy transfer and Pyramids

Food Chains & Food Webs.

Topic 4 Ecology 4.2 Energy Flow.

Warm-up: Put the following into a food chain in order

Feeding Relationships

Day 2 SCI 10 Ecology.

Today’s Learning Target(s):. How is energy transferred in an ecosystem

Limits on Energy Transfer and Ecological Pyramids

Energy in Ecosystems.

Energy Flow in an Ecosystem

Food Chains, Food Webs, and Ecological Pyramids

Trophic Levels:.

Energy Flow in Ecosystems

5.9B Vocabulary.

Energy in the ecosystem

Ecological Pyramids Diagrams that show relationships between organisms in an ecosystem Three types of ecological pyramids: Numbers Biomass Energy Show.

Energy Flow Through an Ecosystem

Presentation transcript:

Energy in Ecosystems

Trophic Levels Each link of the food chain is known as a trophic level Tropic level refers to the feeding level of an organism Troph is Greek for food

Energy in Ecosystems Energy is lost at each tropic level through life process: respiration, digestion, movement, reproduction As you move up the food chain less energy available for top consumers

Energy Pyramids 10% Rule – i.e. only 10% of energy is available for the next trophic level

Demo Questions….. 1. If the food chain had continue to the next level, what percentage of energy would the fourth- level consumer have received from the third-level consumer? 2. How much water would you have transferred into the fourth-level consumer’s cup? 3. Judging from this activity, why do you think most food chains never go higher than second- or third- level consumers?

QUICK REVIEW If 100% of the energy is available at the first trophic level, what percentages of the energy are available at the second and third trophic levels? 1% 10% 100%

Ecological Pyramids The base of food chains is bigger then the top This is called an ecological pyramid A level of the energy pyramid is called a TROPHIC LEVEL

ENERGY PATHS 3 ways to illustrate energy flow 1. Food Chain: Single path 3 ways to illustrate energy flow 3. Food Pyramid 2. Food Web: many paths

Questions…. 1. Why is it necessary for the number of prey to be greater than the number of predators in order for an ecosystem to be balanced? 2. Complete the chart: A plant produces 5000KJ of energy. 3. Draw a pyramid of energy to represent the food chain above. 4. Make a pyramid of energy with rabbits, snakes, wolves and 67 000KJ of grass Energy entering Organism Energy used by living Organism Energy Available for next tropic level Plant- 5000KJ Deer Wolf