*Read the entire board! *Note change to homework!!!! Please have your homework on your desk for a stamp Yo!*

Slides:



Advertisements
Similar presentations
Trophic Levels, Energy transfer and Pyramids. Vocabulary  Trophic Levels – is the position an organism occupies in a food chain. It refers to food or.
Advertisements

CHAPTER 54 ECOSYSTEMS Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings Section C: Secondary Production in Ecosystems 1.The efficiency.
Feeding Relationships Food Chains Food Webs Trophic Levels 10% Rule Biomass.
Consumers are not all alike. Herbivores eat only plants.
7 th Grade Science FOOD WEBS AND CHAINS. OBJECTIVES Define and give examples of organisms at different trophic levels Describe how energy flows in a food.
Ecology …the study of …….. OUR house…..
Welcome! Please get your interactive notebook and pick up your owl pellet folder from the lab table. Please read the board!
Community Interactions: Food Chains & Food Webs
Ecosystem Structure.
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,
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.
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 through an ecosystem
Ecosystems and Conservation Biology Chapter 36 Part 2.
Outline 3-2: Energy Flow. I. Primary Productivity A. The rate at which organic material is produced by photosynthesis in an ecosystem. 1. Determines the.
Nutrition & Energy Flow
# 11)Examine the energy flow and loss through the trophic levels of an ecosystem given an illustration of an energy pyramid.
Ecology The study of interactions of living things and their environments Abiotic factors – nonliving things in the environment Biotic factors – living.
Catalyst Based on the food chain shown, what would most likely happen to the rat population if another predator began eating snakes? Is the the change.
Feeding Relationships
What happens when an organisms cannot get enough energy?
Ecological Pyramids Chapter 2 Section 2b
Chapter 21 Ecology. Objectives Students should be able to: Briefly describe the non-cyclical nature of energy flow Explain the terms producer, consumer.
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.
AIM: How does energy flow through an ecosystem? DN: What is a niche? Can two organisms occupy the same exact niche? Explain.
Essential Question What happens to energy in a food chain? 1.
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.
Ecology Unit Part 3: Energy Transfer. All organism need energy to carry out essential functions –For example: growth, movement, maintenance & repair,
IN: Where did you get your energy today? The ultimate source of energy on planet earth is the sun! Energy flows when organisms eat.
Food Webs and Energy Pyramids
Ecological Pyramids.
1. Please place guided reading in the basket. 2
Ecology Learning Objectives:
Food Chains, Food Webs, and Ecological Pyramids
Ecology Notes.
Energy Flow in Ecosystems
Outline 3-2: Energy Flow 6/24/2018.
PYRAMIDS EQ: How is energy calculated through a food chain?
Ecology Notes.
Wednesday, September 20 Ecology - HS-LS2-4
Ecosystem Structure.
By the end of this session I should be able to:
Compare and contrast matter and energy
April 26, 2017 Journal: How are photosynthesis and cellular respiration related to each other?
Loss of Energy in a Food Chain
Energy Flow Within an Ecosystem
Chapter 13.6 Pyramid Models.
Science 2200 Energy flow.
What do the solid arrows represent?
Ecology Scientific study of interactions between organisms and their environment.
Starter What is a trophic level?
3.3: Energy Flow in Ecosystems
Trophic Levels, Energy transfer and Pyramids
Ecological Pyramids.
Energy in the Ecosystem
YOU NEED YOUR TEXT BOOKS!
Transfer of Energy Chapter 3-2
Warm-up: Put the following into a food chain in order
Ecological Pyramids WE WILL: YOU WILL:.
Energy in Ecosystems.
Losing Energy and the 10% Rule
Aim: What does an Energy Pyramid show us?
Food Chains, Food Webs, and Ecological Pyramids
Trophic Levels:.
ENERGY FLOW SB4b.
Energy Pyramids and Bioaccumulation
Do Now Activity #4 What is the difference between an autotroph and a heterotroph? What is the difference between cellular respiration and photosynthesis?
Outline 3-2: Energy Flow 10/24/2019.
Ecological Pyramids Diagrams that show relationships between organisms in an ecosystem Three types of ecological pyramids: Numbers Biomass Energy Show.
Lecture #2 How Ecosystems Work
Presentation transcript:

*Read the entire board! *Note change to homework!!!! Please have your homework on your desk for a stamp Yo!*

Comparative Niches Share with your neighbor! Find the strongest comparison in the group. Statement: Even though ecosystems are different, they need to have the same niches.  Agree or disagree? Defend your choice!

Energy flow in ecosystems

Energy Pyramid Fig. 4–16 ecological efficiency 5% to 20% 10% efficiency general rule © Brooks/Cole Publishing Company / ITP Graphic representation of energy available at each trophic level. 90% energy is lost in transfer between trophic levels: motion, body heat, metabolism, growth 10% Rule: Only 10% of energy is available to next trophic level.

Energy pyramids – key understandings Fig. 4–17 © Brooks/Cole Publishing Company / ITP Explain why there are no more than 5 or 6 links in a food chain. Give us our language “lower/higher” on the food chain. Can NEVER be “upside” down Explain why top predators like wolves need lots of land to find enough food to survive.

Prairie Ecosystem Hawks Snakes Mice Grasses

Our food chain – which would provide more total calories for 7 billion people? human animals plants human plants

Biomass Pyramids measure mass Fig. 4–18 © Brooks/Cole Publishing Company / ITP

Pyramids of Numbers Fig. 4–19 © Brooks/Cole Publishing Company / ITP

A measure of the rate at which autotrophs store biomass. Net primary productivity = photosynthetic rate of plants – respiration rate of plants. Primary Productivity determines the shape of the pyramids’ base (and then the next levels up) Net Primary Productivity

Primary Productivity (per area) Fig. 4–21 © Brooks/Cole Publishing Company / ITP

Check for understanding! Key understandings of energy pyramids Where does 90% of the energy go? How to calculate energy at each level (units?) Exceptions to numbers and biomass pyramids