You have a pond that is 10 feet deep with 2 feet of mud at the bottom. Sunlight

Question

You have a pond that is 10 feet deep with 2 feet of mud at the bottom. Sunlight penetrates about 3 feet into the pond. Oxygen levels are highest in the top 5 feet of the pond and then decrease towards the bottom of the pond. Oxygen is not found in the mud layer.

i.Producers

ii.Consumers

iii.Methanogens

iv.Decomposers

Sketch out the pond and place the bolded terms in the appropriate regions of the pond. Show the food web between those organisms. You can use the terms more than once if needed.

For each group you placed in the pond, determine if they are phototrophs or chemotrophs and autotrophs or heterotrophs.

Determine where in the pond you would find the microorganisms classified as aerobes, anaerobes, or microaerophiles.

For each group you placed in the pond in the first step, assign types of metabolism that they could be performing using the terms in bold. Adjust your placements of organisms in this step needed.

With a different color, show movement of carbon through the environment – carbon dioxide, methane, organic carbon, and fermentation products.

Explanation / Answer

You have a pond that is 10 feet deep with 2 feet of mud at the bottom. Sunlight

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