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Ecology & Environment Chapter 2
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Vocabulary Scavenger Decomposer Food chain Food web Energy pyramid
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What are the energy roles in an ecosystem?
Organisms in an ecosystem are either: Producer Consumer Decomposer
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Producers Organisms that makes its own food
Source of all food in an ecosystem Plants, algae, bacteria photosynthesis
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Consumers Obtains energy by eating other organisms
Herbivores = only eat plants Carnivores = only eat animals Omnivores = eat plants and animals Scavenger = feeds on dead organisms
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Consumers – Which is which?
Label each picture as a herbivore, carnivore, omnivore or scavenger
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Decomposers Break down biotic wastes and dead organisms
They return raw materials back to the ecosystem They recycle energy! Mushrooms, bacteria, mold
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Pair Share Review Write one sentence with your pair share partner; finish this sentence: The sun is the main source of energy for producers, consumers and decomposers because ________________________________ _____________________________________________________________________________________________________________________.
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How does energy move through an ecosystem?
Energy moves through an ecosystem when one organisms eats another!
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Food Chains Series of events where one organisms eats another.
Lake Algae -> Bass Fish -> Eagle Put an example of a food chain in your notes. Connect grass to you!
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Food Webs Food chain shows one path of energy
Food web shows all the possible paths energy can move *Virtual lab tomorrow!
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Energy Pyramids Diagram that shows how energy moves from lower to higher levels *the most energy is available at the producer level of the pyramid, as energy moves up the pyramid less energy is available
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Pair Share Review With your pair share partner, complete the Energy Flow in Ecosystems worksheet. 10 minutes! Will correct when finished!! No copying! Work together!!
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Vocabulary Biome Climate Desert
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Vocabulary Rainforest Emergent layer Canopy Understory
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Vocabulary Grassland Savanna Deciduous tree
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What are the six major biomes?
Biome – group of ecosystems with similar climates and organisms Desert Rainforest Grassland Deciduous forest Boreal forest Tundra
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Climate Climate = average temp & amount of precipitation *Climate determines a biome by limiting the type of plants that can grow
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1. Desert Biomes
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2. Rain Forest Biomes
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3. Grassland Biomes
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Prepwork Pages due tomorrow!
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4. Deciduous Forest Biomes
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5. Boreal Forest Biomes
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6. Tundra Biomes
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