How Acid Rain and Global Warming Might Impact Lake Munson - PowerPoint PPT Presentation

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How Acid Rain and Global Warming Might Impact Lake Munson

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How Acid Rain and Global Warming Might Impact Lake Munson – PowerPoint PPT presentation

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Title: How Acid Rain and Global Warming Might Impact Lake Munson


1
How Acid Rain and Global Warming Might Impact
Lake Munson
  • Henrietta Fasanya, Ayo Oti, Jasmine Pearcey,
    Arlin Robinson, and Nicole Robinson

2
Problem
  • How does pH and heat effect phytoplankton
    growth?

3
Background Information
  • Phytoplankton
  • Phytoplankton are central to the biological food
    making process for animals and are the basis for
    the oceanic food chain. They also generate most
    of the oxygen in the atmosphere and underwater.
    Scientists believe that phytoplankton are most
    likely to be affected by climate change and the
    acid rain pollutants produced by industry.

4
Hypothesis
We predict that an increase in temperature and a
degrease in pH levels will decrease the
population of phytoplankton. Extreme changes in
either of these factors can cause phytoplankton
death.
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Doing our experiment
  • Samples collected from Lake Munson
  • Attained pH and temperature of each sample
  • Counted phytoplankton from each sample
  • Lowered pH using nitric acid in one sample
  • Altered temperature in another
  • Counted phytoplankton 2nd time
  • Noted which alteration induced the biggest
    population change

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Results
  • Average decrease in phytoplankton population
    after temperature was increased from 24 to 34C.
    87.5
  • Average decrease in phytoplankton population
    after pH was lowered from 6.01 to 2.68. 51.8

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15
Climate Change!
  1. Rising ocean tempratures
  2. Increasing acidity of bodies of water due to Acid
    Rain

16
What does this mean?
  • Experimental data shows that when water
    temperature rises and pH decreases the population
    of phytoplankton decreases.
  • Symptoms of climate change
  • The marine food chain starts with phytoplankton
    water respiration and the earths atmosphere rely
    heavily on phytoplankton as well.

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Conclusion
  • In our experiment we set out to simulate the
    effects of climate change on phytoplankton
    population. When we did this in a controlled lab
    environment we found that lowered pH and
    increased temperature decrease the phytoplankton
    population by at least 55.

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END
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