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Ecosystems

Ecosystems. Objectives. Students will be able to identify between abiotic factors and biotic factors. Students will explain the harmful and beneficial activities done to the ecosystem. Students will predict possible solutions to natural environmental change.

geoffrey-mcclain
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Ecosystems

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  1. Ecosystems

  2. Objectives • Students will be able to identify between abiotic factors and biotic factors. • Students will explain the harmful and beneficial activities done to the ecosystem. • Students will predict possible solutions to natural environmental change. • Students will diagram land and water food webs and the transfer of energy.

  3. Vocabulary • Abiotic Factor Ecosystem • Avalanche Food Web • Biotic Factor Natural Species • Channelization Overpopulation • Consumer Pollution • Decomposer Predator • Deforestation Prey • Desertification

  4. Abiotic and Biotic Factors Biotic Factors Living things Related to life Examples: Plants Animals Fungus Protists Bacteria Abiotic Factors Non- Living things Affect living things Examples: Habitats Pond Forest Desert Weather sun Vs.

  5. Abiotic and Biotic Factors + = Biotic Factors Abiotic Factors Ecosystems Biotic and abiotic factors combine to create a system or more precisely, an ecosystem. An ecosystem is a community of living and nonliving things considered as a unit. The Impact of Changing FactorsIf a single factor is changed, perhaps by pollution or natural phenomenon, the whole system could be altered.

  6. Abiotic and Biotic Factors List the abiotic and biotic factors you see in this picture.

  7. Pollution • Pollutants are waste material that contaminate the water, air, or soil. • Chemical make-up, concentration, and persistence help determine the severity of pollution to the environment. • There are many types of pollution ranging from air pollution to noise pollution. • Humans cause pollution, but also have the power to stop pollution.

  8. Pollution • Pollution has been apart of civilizations for centuries. Soot on the top of cave roofs, show that in prehistoric civilizations even had a problem with pollution. • The forging on metal is a turning point in the significant increase in air pollution according to some sources. • Pollution became a popular issue after WWII.

  9. Pollution • In the 1950s and 1960s the United States became aware and proactive with pollution issues. • Legislation was passed to protect the environment with acts like, the noise control act, clean air act, and the clean water act.

  10. Pollution • What are the effects of pollution? • Health problems in humans • Reduced ozone layer around the Earth • Animal species wiped out • Global warming • Acid rain • Smog

  11. Pollution Why do people pollute the Earth? • People pollute the Earth because of… • Ignorance • Economic benefits • Not enough money to clean up pollution • Accidents ( i.e. oil spills)

  12. Pollution Lets research ways to GO GREEN! We can prevent pollution by going green. What does going green mean?

  13. Natural Environmental Change • Natural environmental change is the natural occurrences in nature that affect or change the ecosystem. • Examples: • Volcanoes • Avalanche • Earthquakes • Forest fires • etc How do these natural occurrences change the Earth’s surface?

  14. Natural Environmental Change • Famous Examples of natural occurrences that have changed the Earth. • City of Pompeii • Mt. St. Helen eruption • Hurricane Katrina • Joplin tornado

  15. What do you think the Earth could look like in 200 years from now? Why? 1000 years from now?

  16. Natural Environmental Change • Our world is always changing. Look out your window long enough, and you might see the weather change. Look even longer, and you'll see the seasons change. The Earth's climate is changing, too, but in ways that you can't easily see. • The Earth is getting warmer because people are adding heat-trapping gases to the atmosphere, mainly by burning fossil fuels. These gases are called greenhouse gases.

  17. http://www.epa.gov/climatechange/kids/impacts/effects/index.htmlhttp://www.epa.gov/climatechange/kids/impacts/effects/index.html

  18. Natural Environmental Change • Lets use this calculator to see how we can help our environment… • http://www.epa.gov/climatechange/kids/calc/index.html My Results: Based on what you're already doing, you're avoiding 2,606 pounds of carbon dioxide emissions per year, compared with the average American. This is equivalent to the emissions from driving a car 2,780 miles. If all the students in the United States took the actions you checked, together they would save a total of 204,238,528,000 pounds of carbon dioxide emissions per year. Let’s do some math!

  19. Food Web (Transfer of Energy) • A food web is connection between difference species in an ecosystem. • There are land and water food webs also known as terrestrial and aquatic food webs. • If one food web is disrupted, either by pollution or other means, every animal and consumer is affected, and this can lead to extinction of a species.

  20. Food Web • Food webs describe how your foods supply you with the energy and nutrients you need. • According to Pennsylvania State University, only about 10 percent of the energy an organism possesses is passed on to the next when it is eaten. This means food chains rarely consist of more than six species. Food chains usually display plants at the start, herbivores in the middle and predators at the top. Let’s talk about… species Consumers Predator Prey HerbivoresDecomposers Overpopulation OmnivoresNatural Species

  21. Food Web • A food web is made up of many food chains. • A food chain is a series of organisms that are all dependent on each other as a source of food. Food Chain Food Web

  22. Food Web • Plants are known as producers because they use energy from the sun to make their own food • Animals cannot make their own food so they must eat plants or other animals. • Animals that only eat plants = herbivores • Animals that eat other animals = carnivores • Animals and human who eat both = omnivores • Decomposers like bacteria and fungi feed on decaying matter

  23. Food Web • If small or big changes happen, food webs are affected as well. In turn, this changes the ecosystem. • http://www.teachertube.com/viewVideo.php?title=Food_Webs&video_id=230358

  24. The further along the food chain you go, the less food (and hence energy) remains available. http://www.vtaide.com/png/foodchains.htm

  25. Break down each ingredient in this picture and put it into a food web.

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