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Succession and Environmental Issues

Succession and Environmental Issues. Gaiser Life Science. Know. What happens to a vacant lot or garden over time?. “I don’t know anything.” is not an acceptable answer. Use complete sentences. Evidence.

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Succession and Environmental Issues

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  1. Succession and Environmental Issues Gaiser Life Science

  2. Know What happens to a vacant lot or garden over time? “I don’t know anything.” is not an acceptable answer. Use complete sentences. Evidence After listening to the PowerPoint lecture, come back here and list evidence to explain why your answer to the above question is or is not a good answer. You may also use other outside sources to help you respond. Your choice - you decide how you want to represent your learning. Page #

  3. Succession and Environmental Issues Information Clarifying ?s succession - a series of predictable changes in a community over time - changes in an area where NO ecosystem ever existed primary succession Example: New island (Surtsey, Iceland) Happens slowly - over time. Seeds are deposited. Soil forms. Nutrients are deposited in the soil (rotting debris, bird droppings). Plants grow. secondary succession - Changes happen faster after a disturbance in an existing ecosystem. Example: Volcanic eruption (Mt. St. Helens) Environmental issues 1. Resource use - Living and non-living things people use such as renewable and non-renewable resources renewable resource - things we use that are naturally replaced Examples: sunlight and wind non-renewable resource - things we use that can’t be replaced Example: coal Example: oil 2. Population growth - Improved medicines, sanitation, and agricultural advances have raised life expectancy world wide. At the same time population and resource consumption have increased. Page #

  4. Succession and Environmental Issues Information Clarifying ?s 3. Pollution - Misuse of resources can have negative effects on the environment. pollution - any contaminant added to the environment that has a negative effect on living things Example: using coal to generate electricity Example: pollution Example: use of pesticides (DDT & 245T) Factors to consider 1. Scenic value - Is the area peaceful and relaxing? 2. Health value - Good source of water Example: clean water 3. Economic value - Will the area provide jobs? Example: lumber industry 4. Recreational value - Can the area provide leisure activities? Example: hiking 5. Ecological value - Does the area have too many organisms? Page # Summary:

  5. Succession and Environmental Issues Information Clarifying ?s succession - a series of predictable changes in a community over time - changes in an area where NO ecosystem ever existed primary succession Example: New island (Surtsey, Iceland) Happens slowly - over time. Seeds are deposited. Soil forms. Nutrients are deposited in the soil (rotting debris, bird droppings). Plants grow. secondary succession - Changes happen faster after a disturbance in an existing ecosystem. Example: Volcanic eruption (Mt. St. Helens) Environmental issues 1. Resource use - Living and non-living things people use such as renewable and non-renewable resources renewable resource - things we use that are naturally replaced Examples: sunlight and wind non-renewable resource - things we use that can’t be replaced Examples: coal and oil 2. Population growth - Improved medicines, sanitation, and agricultural advances have raised life expectancy world wide. At the same time population and resource consumption have increased. Page #

  6. Succession and Environmental Issues Information Clarifying ?s 3. Pollution - Misuse of resources can have negative effects on the environment. pollution - any contaminant added to the environment that has a negative effect on living things Examples: using coal to generate electricity, air pollution, use of pesticides Factors to consider 1. Scenic value - Is the area peaceful and relaxing? 2. Health value - Good source of water Example: clean water 3. Economic value - Will the area provide jobs? Example: lumber industry 4. Recreational value - Can the area provide leisure activities? Example: hiking 5. Ecological value - Does the area have too many organisms? Page # Summary:

  7. This PowerPoint was created by Tim Paterek from Charlene Shea’s lecture notes. All pictures came from Google Image Search. To fall within the Fair Use Guidelines, this PowerPoint must be used within the confines of the classroom and may not be published back onto the Internet unless the pictures are removed.

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