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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.
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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
Algae and river plants will also eat the leaf • Predator insects eat insects that ate the leaf • Birds will eat the predator insects • While 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. • Examples • An Oak forest in NE Pennsylvania • A coral reef in the Pacific Ocean
Components of an Ecosystem • Biotic and Abiotic factors • Organisms • Populations • Communities
Ecosytem Def: All the living and nonliving things in an area
Biotic Factors • Biotic Factors: • The living parts & ONCE living parts of an ecosytems • Includes all the Plants and animals
Biotic Factors • Include: • Dead Organisms • Dead parts of an organism • Leaves • An organism’s waste products
Abiotic Factors • Def: The non-living parts of an ecosystem • Includes: • Air • Water • Rocks • Sand • Light • Temperature
What’s in an Ecosystem? • All the living and nonliving things in an ecosystem • Examples: • Garden • Log
Rainforest • Rain • Tree Frog • Human Tourist • Spider Monkey • Soil • Moist Air • Rocks • Monkey Poop • Dead Toucan bird • Waterfall • Sunlight • Dead branch
Rainforest • Rain • Tree Frog • Human Tourist • Spider Monkey • Soil • Moist Air • Rocks • Monkey Poop • Dead Toucan bird • Waterfall • Sunlight • Dead branch
Desert • Sand • Cactus • Gila Monster • Mountain • Moonlight • Dead Rattlesnakes • Urine • Clouds • Temperature • Hair • Gravel
Desert • Sand • Cactus • GilaMonster • Mountain • Moonlight • Dead Rattlesnakes • Urine • Clouds • Temperature • Hair • Gravel
Activity • Pick 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 work • Time: 4 minutes
Biodiversity • Def: The variety of living things in an ecosystem
Types of Biodiversity High 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 Biodiversity • Many 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 Time • Complete Practice #6 and Homework #6 • Low volume group work • Time: 4 minutes
Bill Nye the Science Guy • A short video (23 minutes) on biodiversity • Fill out video worksheet slip • Don’t forget your NAME!!
