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Community Interactions &Food Chains, Webs & Pyramids Chapter 2.2
Trophic Level: Who eats who in the food chainSteps along which materials & energy pass Shown as food chains, webs & pyramids
Food Chain: ONLY ONE source of food Less stable
Food Web: More than one choice of foodSeveral food chains linked together More stable
Food Pyramid Tertiary Secondary Primary consumer Producer
Food Pyramid Tertiary Secondary consumer Primary consumer Producer
Food Pyramid Illustrates? Food Chain of numbers of biomass of energy
Food Pyramid activity heat heat activity 90%: Lost as Waste Used for10% of the energy is passed on as biomass 90%: Lost as Waste Used for Reproduction activity heat heat activity
Biomagnification Magnification= to increase Concentration of toxinsAre magnified In upper pyramid levels
Biomagnification the top consumer requires more biomassand concentrates the toxin
Food Pyramid Human Shark Bass Smelt Algae Who is most susceptible ?
Cycles in Nature:
Energy Flows………... Flows in one directionWill never return to the same form Conservation of Energy: Energy changes form But is never lost
Matter cycles………….. Matter can be recycled Matter can be reformedThe basic building blocks are reused Conservation of Matter
Tracing the cycling of matter…..
Energy & Matter in an Ecosystem:
Ecological Pyramids Chapter 2 Section 2b
Trophic Levels & Energy in Ecosystems. Energy Movement through Ecosystems Energy flows through ecosystems Trophic levels: feeding relationships.
Chapter 37.1 and 37.2 – Ecology Dynamics The Flow of Energy Sun: ultimate source of energy The flow of energy is one way – from photosynthetic.
Energy Flow in the Ecosystem. Food chain – shows which organisms each which in an ecosystem.
Energy Flow in Nature. All organisms need energy to live. Organisms can be divided into three main groups – producers, consumers, and decomposers – based.
13.6 Pyramid Models KEY CONCEPT Pyramids model the distribution of energy and matter in an ecosystem.
Ecosystem Structure. Food Chain 1 st level of all food chains must be the producers Producers have the ability to trap energy and produce carbohydrates.
Consumers are not all alike. Herbivores eat only plants.
Energy Transfer Within Ecosystems APES~Mr. Plowman.
AIM: How is energy transferred in an ecosystem? DN: Explain the difference between a primary consumer, secondary consumer and tertiary consumer. HW: Article.
Chapter 2.2 – Flow of Energy in an Ecosystem Energy in an Ecosystem Autotrophs 2.2 Flow of Energy in an Ecosystem Principles of Ecology Organism.
Ecology Standards 6a. Know biodiversity is the sum total of different kinds of organisms & is affected by alterations of habitats 6b. Know how to analyze.
MRS. SANDY GÓMEZ Energy Flow in Ecosystems. Are the feeding relationships between organisms. A Food Chain is: transfer of food energy from its source.
How does energy move through an ecosystem? Energy moves from one organisms to another when it is eaten.
Ecology Ecology- Science of the interactions between organisms and their environment.
What organisms are producers in the food web and how do you know? Starter: Pre-Test Explain what you know about each of the following relationships: producer/consumer.
Energy Flow How does energy move through the ecosystem?
Lesson Overview Lesson Overview Energy Flow in Ecosystems -Biotic v. Abiotic Factors -Trace the flow of energy through living systems. -Identify the three.
Energy and Matter Flow through Ecosystems. All stable ecosystems need a supply of energy Autotrophs are able to take inorganic compounds from the environment,
13.6 Pyramid Models Pyramids model the distribution of energy and matter in an ecosystem. 1 st Trophic Level 2 nd Trophic Level 3 rd Trophic Level 4 th.
Flow of Matter and Energy. A food chain is a linear representation of who eats who in an ecosystem. Producers (plants, algae) Primary Consumer (herbivores)
Energy flows…(and is lost)
Pop Quiz Today!. How do organisms get the energy needed for metabolism?
Trophic Levels. Producers Primary Consumers Secondary Consumers.
Chapter Energy Roles An organism’s energy role in an ecosystem may be that of a producer, consumer, or decomposer. An organism’s energy role is.
Remember Ecosystem, Habitat and Niche?
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.
Which of the organisms in the above diagram represents the Tertiary Consumer?
Energy Flow in Ecosystems
An energy pyramid shows the distribution of energy among trophic levels.
Principles of Ecology.
Energy flows through ecosystems.
1 Energy Flow Through an Ecosystem Food Chains, Food Webs, Energy Pyramids.
Chapter 5.1 Energy flow in Ecosystems. Sustaining Life on Earth Life depends on these interconnected factors: One-way flow of energy from the sun through.
Trophic levels Determines the pathways of energy flow and nutrient cycling (more on this later) Different species in the ecosystem are divided into different.
Click to edit Master subtitle style 29/09/2016 Ecosystems.
Part 2: Energy Flow and Nutrient cycles Support life in Ecosystem
Food Chains and Food Webs
BIO 1300 ECOLOGY AND ENERGY FLOW Chapter 15 part 1 ECOSYSTEM ORGANIZATION AND ENERGY FLOW.
ENERGY FLOW IN ECOSYSTEMS chapter 3. All organisms need materials and energy to live!
Objectives Analyze the energy pathways through the different trophic levels of a food web or energy pyramid Evaluate the impact of changes in energy.
Food Webs & Energy Pyramids
Energy Flow in the Biosphere,
Section 5-1: Energy Flow in an ecosystem. Objectives: Describe how energy is transferred from the sun to producers and then to consumers. Describe one.
Objectives Explore the relationship between different animals in ecosystems in terms of energy transfer. Outcomes 3: Draw different diagrams to represent.
Chapter 2.4 & 2.5. We have already studied how nutrients flow through ecosystems:
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.
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