CHAPTER 7 Picture This. Your Turn
CHAPTER 7 Picture This. Your Turn
Picture This, YOUR TURN: Trophic-Level Feeding
Picture This. YOUR TURN
Trophic-
These copper sharks (Carcharhinus brachyurus) are feeding on schooling sardines (Sardinops sagax) off the coast of South Africa. Sardines eat small animals called zooplankton (see Figure 7.24). The zooplankton eat microscopic plants called phytoplankton. Based on this information, answer the following questions. (Hint: Draw out this food chain with the phytoplankton at the primary producer level.) (© Alexander Safonov/Flickr/GettyImages)
Question 7.84
What trophic level do the copper sharks occupy?
Question 7.85
Given the 10% rule, how much energy from the primary producers do they receive?
CHAPTER 7 Further Reading
CHAPTER 7 Further Reading
Hulme, Philip E. “Invasive Species Unchecked by Climate.” Science 335 (2012): 538–
539. MacDonald, Glen. Biogeography: Introduction to Space, Time and Life. New York: Wiley, 2003.
Quammen, David. The Boilerplate Rhino: Nature in the Eye of the Beholder. New York: Scribner, 2001.