Food Energy through Ecosystems - blanks · 1 Energy Flow in an Ecosystem 2 Energy Flow •Energyin...

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Energy Flow in an Ecosystem

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Energy Flow

• Energy in an ecosystem originally _____________________

• Energy flows through Ecosystems from ____________________

– Producers (make food)

–Consumers (use food by eating producers or other consumers)

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Producers

• ______ is the main source of energy for ______ life on earth.

• Producers contain _________ & can use energy directly from the sun

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Autotrophs

• An Autotroph is any organism that ____________________ supply!

• Autotrophs are also called ______________

• Plants, algae, some protists, & some bacteria are examples

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Niche of a Producer

• ______________and transforms it into organic, stored energy for the use of living organisms.

• May be _______________ using light energy (e.g. plants)

• May be _______________ using chemical energy (e.g. cyanobacteria)

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Photoautotroph

Producer That Captures Energy from the sun by:– Photosynthesis

•Adds _______ to the atmosphere•Removes __________from the Atmosphere

Algae

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• On Land

–_________

• In The Sea

–__________

• Tidal Flats & Salt Marshes

–_________________

Habitat of Photoautotrophs

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Chemoautotrophs

• Capture energy from the bonds of inorganic molecules such as _________________

• Process is called ________________

• Often occurs in deep sea vents or gut of animals Called a Black

smoker (thermal vent)

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Tube Worms living in Black Smoker

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Consumers

Heterotrophs eat other organisms to obtain energy. (e.g. animals)

• Herbivores

–Eat Only Plants

• Carnivores

–______________

____________

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Consumers

Heterotrophs eat other organisms to obtain energy.

• Omnivores (Humans)– __________________________

• Detritivores (____________)– Feed On Dead Plant & Animal Remains (buzzards)

• Decomposers– _____________________

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Feeding Relationships

Energy flows through an ecosystem in ___ direction

from ________ to various levels of __________

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Feeding Relationships

• Food Chain–Simple Energy path through an ecosystem

• Food Web–______________path through an ecosystem made of many food chains

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Food Chain

Producer (trapped sunlight & stored food)

1st order Consumer

2nd Order Consumer

3rd

Order consumer 4th Order

Consumer

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Name the Producer, Consumers & Decomposers in this food

chain:

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Food Web

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Trophic Levels

Each Level In A Food Chain or Food Web is a Trophic Level.

• _____________

–Always The First Trophic Level

–How Energy Enters The System

• _____________

–Second Trophic Level

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Trophic Levels

• ___________/___________

–Make Up The Remaining Trophic Levels

Each level depends on the one below it for energy.

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Ecological Pyramids

Graphic Representations Of The Relative Amounts of Energy or Matter At Each Trophic Level

May be:

________ Pyramid

_________Pyramid

Pyramid of Numbers

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Energy Pyramid

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Biomass Pyramid

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Pyramid of Numbers