In our food web demonstration I was a protozoan. Protozoa are single-celled eukaryotes (organisms whose cells have nuclei) that commonly show characteristics usually associated with animals, most notably mobility and heterotrophy. They eat phytoplankton and bacteria, the only things smaller than them. They are eaten by small fish and shrimp. Protozoan are in the second row of the food chain so they have 10% of the original energy. Without protozoan in the food web, some animals who would rely on them to survive would die out. When one spot on the food web is taken out, it affects everything else.
Phytoplankton
The phytoplankton are so important because they are the bottom of the food chain. All of the energy in the food chain comes from these. Without them, the whole food chain would disappear because
Energy Flow
The amount of energy transferred to the next trophic level is continually decreasing. Every trophic level only passes on 10% of the energy they have to the next level. The phytoplankton have 100% energy, but when a protozoan eat them, they only have 10% energy. IF eaten by a small fish, that fish only has 1% of the original energy.
http://www.schools.ccps.k12.va.us/sites/tp/brown/Matthews%20picture%20library/freshwater%20protozoan.jpg
Phytoplankton
The phytoplankton are so important because they are the bottom of the food chain. All of the energy in the food chain comes from these. Without them, the whole food chain would disappear because
Energy Flow
The amount of energy transferred to the next trophic level is continually decreasing. Every trophic level only passes on 10% of the energy they have to the next level. The phytoplankton have 100% energy, but when a protozoan eat them, they only have 10% energy. IF eaten by a small fish, that fish only has 1% of the original energy.
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