Watch the following videos and listen
carefully
http://www.youtube.com/watch?v=YO3Gg3YfJ84&feature=channel
http://www.youtube.com/watch?v=tDny8jvd950&feature=related
http://www.youtube.com/watch?v=B4IAAa667EM
FISH KILLWhat could Cause this?
Bioremediation—Bioremediation can be defined as: any process that uses microorganisms or their enzymes to return the environment altered by contaminants to its original condition.
What you should know:
• Mussels are filter feeders– They eat plankton– They eat “organic matter” or “detritus”
• Mussels are indicators of stream health– “natural water purifiers”– Respond to environmental changes;
environmental health warning system• Threatened by pollution, dam construction,
habitat loss, and poaching
Focus on the filter feeding…
• Think: FOOD CHAINS and the CARBON CYCLE• Algae use Carbon dioxide, water and sunlight to
grow by photosynthesis• Think: NITROGEN/PHOSPHOROUS CYCLE• Nitrogen and Phosphorous are nutrients/fertilizer• MUSSELS EAT THE ALGAE ……– The excretion of waste from mussels returns nutrients to
producers (algae and plankton)More Producers=More Consumers=More Biodiversity =
Healthier Stream!
Do all mussel species filter at the same rate?
• You will observe 3 different species of mussel filter feeding.
• The rate of filter feeding is being measured by a fluorometer.– Uses light to measure the amount of particles in the water.
• You will record the time and the fluorescense level for each species for your table in the Google Doc data table on the laptop.
• All biology classes are recording this data. We will graph the collected data tomorrow.
In your notebook…• Title the next blank page “Mussel Mania” – you will need to develop a more
formal and informative title for your lab report.• What is the Problem question?• What will be your Hypothesis?
– As the mussels filter feed, what should happen to the amount of particles in the water?
– Hypothesize how you will know which species filters better than the other two. • What will be the Independent Variable?• What will be the Dependent Variable?• What Control Variables should there be?• What Data should be collected? Create a simple data table• Write a simple Procedure• Analysis -- Sketch what you predict the graph of this data will look like. What
will you label the x-axis? The y-axis? How many lines will you have?• Conclusion
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