ecology & environment
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Ecology & Environment. Chapter 2. Vocabulary. Scavenger Decomposer Food chain Food web Energy pyramid. What are the energy roles in an ecosystem?. Organisms in an ecosystem are either: Producer Consumer Decomposer. Producers. Organisms that makes its own food - PowerPoint PPT PresentationTRANSCRIPT
Ecology & Environment
Chapter 2
VocabularyScavenger
Decomposer
Food chain
Food web
Energy pyramid
What are the energy roles in an ecosystem?
• Organisms in an ecosystem are either:– Producer– Consumer– Decomposer
Producers
• Organisms that makes its own food• Source of all food in an ecosystem• Plants, algae, bacteria photosynthesis
Consumers
• Obtains energy by eating other organismsHerbivores = only eat plantsCarnivores = only eat animalsOmnivores = eat plants and animalsScavenger = feeds on dead organisms
Consumers – Which is which?
Label each picture as a herbivore, carnivore, omnivore or scavenger
Decomposers
• Break down biotic wastes and dead organisms• They return raw materials back to the
ecosystem
• They recycle energy!• Mushrooms, bacteria, mold
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 ________________________________ _____________________________________________________________________________________________________________________.
How does energy move through an ecosystem?
• Energy moves through an ecosystem when one organisms eats another!
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!
Food Webs• Food chain shows one
path of energy• Food web shows all
the possible paths energy can move
*Virtual lab tomorrow!
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
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!!
Vocabulary
Biome
Climate
Desert
Vocabulary
Rainforest
Emergent layer
Canopy
Understory
Vocabulary
Grassland
Savanna
Deciduous tree
What are the six major biomes?
Biome – group of ecosystems with similar climates and organisms
1. Desert2. Rainforest3. Grassland4. Deciduous forest5. Boreal forest6. Tundra
Climate
Climate = average temp & amount of precipitation
*Climate determines a biome by limiting the type of plants that can grow
1. Desert Biomes
2. Rain Forest Biomes
3. Grassland Biomes
Prepwork
• Pages 63-66 due tomorrow!
4. Deciduous Forest Biomes
5. Boreal Forest Biomes
6. Tundra Biomes