Global estimates of denitrification in terrestrial ecosystems vary widely but are of the order 200102 g/yr, and more than half of that total occurs in wetland ecosystems. If restoration results in an increase in wetland area by approximately 25%, it would be expected that losses of nitrogen through denitrification would be closer to: A.1751012 g/yr, 2251012 g/yr, 2751012 g/yr, 325*1012 g/yr?

Question

Global estimates of denitrification in terrestrial ecosystems vary widely but are of the order 200102 g/yr, and more than half of that total occurs in wetland ecosystems. If restoration results in an increase in wetland area by approximately 25%, it would be expected that losses of nitrogen through denitrification would be closer to: A.1751012 g/yr, 2251012 g/yr, 2751012 g/yr, 325*1012 g/yr?

Answer 1

To calculate the new estimate of nitrogen losses through denitrification after a 25% increase in wetland area, we need to multiply the current estimate by 1.25.

Given that the current estimate is 200*10^2 g/yr, we can calculate the new estimate as follows:

New estimate = Current estimate * 1.25
= 200*10^2 g/yr * 1.25

Calculating this, we get:

New estimate = 250*10^2 g/yr

Therefore, the expected losses of nitrogen through denitrification would be closer to 250*10^12 g/yr.

So, the answer is: 250*10^12 g/yr.

Answer 2

To calculate the expected losses of nitrogen through denitrification after the restoration, we need to determine the current losses and then calculate the increase.

Given that more than half of the total denitrification occurs in wetland ecosystems and the global estimate is approximately 200*10^12 g/yr, we can calculate the current losses in wetlands.

Current losses in wetlands = (More than half of total denitrification)
= (0.5 x 200*10^12 g/yr)
= 100*10^12 g/yr

Since the restoration is expected to increase wetland area by approximately 25%, we can calculate the expected increase in losses.

Expected increase in losses = (Current losses in wetlands) x (Increase in wetland area)
= (100*10^12 g/yr) x (25/100)
= 25*10^12 g/yr

Now, to calculate the total losses after restoration, we add the expected increase to the current losses.

Total losses after restoration = (Current losses in wetlands) + (Expected increase in losses)
= 100*10^12 g/yr + 25*10^12 g/yr
= 125*10^12 g/yr

Therefore, losses of nitrogen through denitrification would be closer to 125*10^12 g/yr after the restoration.

Among the options provided, the closest value is 125*10^12 g/yr.