4.21 Have your biome of the day worksheet ready to go.

BIOME OF THE DAY sound 1 Sound 2

Today’s biome is …… the tropical savanna

Abiotic Factors warm all year seasonal rainfall frequent fires caused by lightning

Plants in the tropical savannah Bermuda Grass Senegal Gum Acacia Elephant Grass Umbrella Thorn Acacia

Animals Lions Elephants Giraffes Zebras Warthog Hyena

Human impact Overgrazing Foreign Species

Energy Flow in an Ecosystem What are produces and consumers? What is a food chain and food web? How does energy pass in a food web? What is Biological magnification?

Energy Flow Energy in an ecosystem originally comes from the sun Energy flows through Ecosystems from producers to consumers Producers (make food) Consumers (use food by eating producers or other consumers)

Producers Sunlight is the main source of energy for most life on earth. Producers contain chlorophyll & can use energy directly from the sun

Autotrophs An Autotroph is any organism that can produce its own food supply! Autotrophs are also called Producers Plants, algae, some protists, & some bacteria are examples

Niche of a Producer Captures energy and transforms it into organic, stored energy for the use of living organisms. May be photoautotrophs using light energy (e.g. plants) May be chemoautotrophs using chemical energy (e.g. cyanobacteria)

Photoautotroph Producer That Captures Energy from the sun by: Photosynthesis Adds Oxygen to the atmosphere Removes Carbon Dioxide from the Atmosphere

Habitat of Photoautotrophs On Land Plants In The Sea Algae Tidal Flats & Salt Marshes Cyanobacteria

Called a Black smoker (thermal vent) Chemoautotrophs Capture energy from the bonds of inorganic molecules such as Hydrogen Sulfide Process is called Chemosynthesis Often occurs in deep sea vents or gut of animals discovery Called a Black smoker (thermal vent)

Consumers Heterotrophs eat other organisms to obtain energy. (e.g. animals) Herbivores Eat Only Plants Carnivores Eat Only Other Animals

Consumers Heterotrophs eat other organisms to obtain energy. (e.g. animals) Herbivores Eat Only Plants Carnivores Eat Only Other Animals Zebra video

Consumers Omnivores (Humans):Eat Plants & Animals Detritivores (Scavengers):Feed On Dead Plant & Animal Remains Decomposers: Fungi & Bacteria

Feeding Relationships Energy flows through an ecosystem in one direction from producers to various levels of consumers

Feeding Relationships Food Chain Simple Energy path through an ecosystem Food Web More realistic path through an ecosystem made of many food chains

Food Chain Producer (trapped sunlight & stored food) 3rd Order consumer 2nd Order Consumer 1st order Consumer 4th Order Consumer Producer (trapped sunlight & stored food)

Name the Producer, Consumers & Decomposers in this food chain: copyright cmassengale

Food Web

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Each Level In A Food Chain or Food Web is a Trophic Level. Trophic Levels Each Level In A Food Chain or Food Web is a Trophic Level. Producers Always The First Trophic Level How Energy Enters The System Herbivores Second Trophic Level

Trophic Levels Carnivores/Omnivores Make Up The Remaining Trophic Levels

10% Each level depends on the one below it for energy. Each level only passes on 10%. The rest is used or given off as heat.

Ecological Pyramids Graphic Representations Of The Relative Amounts of Energy or Matter At Each Trophic Level May be: Energy Pyramid Biomass Pyramid Pyramid of Numbers

Energy Pyramid

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copyright cmassengale Pyramid of Numbers copyright cmassengale

Biological Magnification process in which toxic substances become more harmful at each higher trophic level in a food chain Ex: DDT

Food Web Project When you are done, finish and turn in your foldable

TOTD What is the ultimate source of all energy on earth?