unit 2: ecology!!!!
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Unit 2: ECOLOGY!!!!. Ecosystems: Everything is Connected. Dead leaf falls from a tree into a stream Bacteria and fungi start to eat the leaf Insects will start to physically break down the leaf Motion of stream will also break down the leaf Caddisflies will catch and eat the pieces. - PowerPoint PPT PresentationTRANSCRIPT
Unit 2: ECOLOGY!!!!
Ecosystems: Everything is Connected
Dead leaf falls from a tree into a streamBacteria and fungi start to eat the leafInsects will start to physically break down the leaf
Motion of stream will also break down the leafCaddisflies will catch and eat the pieces
Algae and river plants will also eat the leaf Predator insects eat insects that ate the leafBirds will eat the predator insectsWhile nesting in trees, these birds excrete droppings that provide nutrients that can be used by the tree to form a new leaf.
What is an Ecosystem?Def: all the organisms living in an area together with their physical environment.
ExamplesAn Oak forest in NE PennsylvaniaA coral reef in the Pacific Ocean
Coral Reef
Oak Forest
Vacant Lot
Components of an Ecosystem
Biotic and Abiotic factorsOrganismsPopulationsCommunities
Ecosytem
Def: All the living and nonliving things in an area
Biotic FactorsBiotic Factors:
The living parts & ONCE living parts of an ecosytems
Includes all the Plants and animals
Biotic FactorsInclude:
Dead OrganismsDead parts of an organism
LeavesAn organism’s waste products
Abiotic FactorsDef: The non-living parts of an ecosystemIncludes:
AirWaterRocksSandLight Temperature
What’s in an Ecosystem?All the living and nonliving things in an ecosystemExamples:
GardenLog
Garden
Log
RainforestRain
Tree Frog
Human Tourist
Spider Monkey
Soil
Moist Air
Rocks
Monkey Poop
Dead Toucan bird
Waterfall
Sunlight
Dead branch
RainforestRain
Tree Frog
Human Tourist
Spider Monkey
Soil
Moist Air
Rocks
Monkey Poop
Dead Toucan bird
Waterfall
Sunlight
Dead branch
DesertSand
Cactus
Gila Monster
Mountain
Moonlight
Dead Rattlesnakes
Urine
Clouds
Temperature
Hair
Gravel
DesertSand
Cactus
Gila Monster
Mountain
Moonlight
Dead Rattlesnakes
Urine
Clouds
Temperature
Hair
Gravel
ActivityPick two ecosystems to compare and contrast.Find the similarities and differences between abiotic and biotic factors in your two ecosystems
Time: 4 minutes
Drill Time!Complete Homework #5 on page 11
Independent, silent workTime: 4 minutes
Biodiversity
Biodiversity
Def: The variety of living things in an ecosystem
Types of BiodiversityHigh Biodiversity
• An ecosystem that has a large variety of plants and animals
• Think: Different
Low Biodiversity
• An ecosystem that has very few different plants and animals
• Think: Same
High or Low Biodiversity?Over 1,00 species of insects live in just one kind of rainforest tree, and the rainforest contains over 250,000 different kinds of plants
High or Low BiodiversityMany plants and animals have difficulty surviving in the scorching heat of the desert
High or Low Biodiversity
Wetlands support a wide variety of species. Plant life flourishes in the wetlands
Drill TimeComplete Practice #6 and Homework #6
Low volume group workTime: 4 minutes
Bill Nye the Science GuyA short video (23 minutes) on biodiversity
Fill out video worksheet slipDon’t forget your NAME!!
