Coral reefs and algal beds have a higher NPP per square meter than even tropical rainforests, the most productive terrestrial ecosystems.Yet, coral reefs and algal beds contribute very little to total NPP on Earth.This is because, compared with rainforests, coral reefs and algal beds
A) have a very low gross primary production.
B) cover a very small area of Earth.
C) are found at much higher latitudes.
D) lose more of their production to higher trophic levels.
E) have very high respiration rates.

Question

Quizplus · Accepted Answer

Coral reefs and algal beds cover a very small area of Earth compared to tropical rainforests, which are much more widespread. Therefore, even though their NPP per square meter is higher, the total contribution to global NPP is much lower.

Coral Reefs and Algal Beds Have a Higher NPP Per