Lab 7 Identifying Limiting Nutrient - Sayre School

Lab 7: The Ecosystem Drawing
7. The Water Cycle on your Ecosystem drawing should include transpiration, precipitation,
condensation, evaporation, percolation, runoff, root uptake, and groundwater. The arrows
should be color-coded blue.
8. The Carbon Cycle on your Ecosystem drawing should include the processes of respiration,
eating, photosynthesis, decomposition, and combustion. The arrows should be color-coded
grey.
9. The Phosphorus Cycle on your Ecosystem drawing should include a cycle on land and a
cycle in water. Be sure to label weathering, uplifting and sediments. The arrows should be
color-coded orange.
10. The Nitrogen Cycle on your Ecosystem drawing should include nitrogen fixation,
assimilation, ammonification, nitrification, and denitrification. The arrows should be colorcoded
green.
11. Be sure to include a man-made disturbance that exists in your biome. Think about tying
the disturbance to burning of fossil fuels.
12. You will be awarded points for neatness and creativity. Points will be deducted if you don’t
have a bibliography or if you use animals that don’t live in the same area of the Earth.
13. Don’t forget to do you homework. It is a review of all the information we have discussed
on Ecosystems and a review for your quiz.
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glossary 7.12