must answer all three parts for credit Ecosystem Ecology In the simulation to th
ID: 33951 • Letter: M
Question
must answer all three parts for credit
Ecosystem Ecology In the simulation to the right, light and dark bottles are being used to estimate the NEP, Re, and GPP of the plankton community in the Northern Atlantic ecosystem. As described on the previous page, water was collected just before dawn, placed in a light bottle and a dark bottle, and then hung at a depth of 40 m. The DO (dissolved oxygen) concentration for the initial bottle is reported on the right above the waters surface. DO for the light bottle and the dark bottle are reported in the bar graphs on the right during the simulation. RUN the incubation for 24 hours by clicking the button below. Based on the change in DO, answer the following questions. Click here for formulas. Q26. What was daily ecosystem respiration? mg O2 L-1 d^-1 Q27. What was daily net ecosystem production? mg O2 L^-1 d^-1 Q28. What was daily gross primary production?Explanation / Answer
26)
Daily ecosystem respiration (Re) = (initial DO) - (Darkbottle DO)
Re = 7- 6.90 = 0.1mg O2/L/d
27)
Daily net primary productivity of ecosystem (NPP) = (light bottle DO) - (Initial DO)
NPP = 7.20 - 7.0 = 0.2 mg O2/L/d
28)
Dailygross primary production (GPP) = NPP + Re = (Light bottle DO) - (Dark bottle DO)
GPP = 0.2+0.1 or 7.2 - 6.9 = 0.3 mg O2/L/d.
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