ecl

ecl

Use the following information to answer the next 3 questions.
To measure primary production of algae in a stream, you place two sealed chambers in the stream, each enclosing the sediments as well as the water above them. One chamber is covered with black tape (blocking all light) while the other is transparent to light.
You measure dissolved oxygen (DO) before and after a 24-hour incubation. DO in the light chamber increased by 1.5 g/m2 while DO in the dark chamber decreased by 2.0 g/m2.
(Hint: You have all the information you need to answer the following 3 questions—you do not need initial and final DO values. Think carefully about what is actually being measured in each of the two chambers!)

Top of Form
Q2.30. What is the estimated ecosystem respiration (Re) for the stream?
g O2 m-2 day-1

Top of Form
Q2.31. What is the stream’s estimated NEP (net ecosystem production)?
g O2 m-2 day-1

Bottom of Form

Top of Form
Q2.32. Based on these data, what is the stream’s estimated gross primary production (GPP)?
g O2 m-2 day-1

Bottom of Form

Top of Form
Q2.33. With the current configuration of Earth’s continents, global atmospheric CO2 peaks in late April. Imagine that all of Earth’s land mass was instead bunched tightly together around the South Pole. Assume that seasonal patterns of growth and respiration are otherwise the same, with summer occurring June-August in the Northern Hemisphere and December-February in the Southern Hemisphere.

 
How will this new configuration affect seasonal swings in average global CO2?
Seasonal swings would be larger, but CO2 would still peak in late April.Seasonal swings would be a little smaller, but CO2 would now peak in late August.Seasonal swings would be larger, but CO2 would now peak in late August.Seasonal swings would be much smaller, perhaps even undetectable.
Q2.34. Changes in O2 levels in light and dark bottles can be used to measure ocean net ecosystem production (NEP) and gross primary production (GPP) but not net primary production (NPP). Why is this?
NPP cannot me estimated without measuring changes in CO2 levels.The bottles include both primary producers and heterotophic consumers.Dark bottles measure changes caused by autotrophic respiration only.Light bottles measure changes caused by heterotrophic respiration only.

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more