Ecology 6th Edition by Charles Krebs

Exercise 3

The discovery that iron was a primary factor limiting primary production in large areas of the ocean caused the oceanographer John Martin to say in the late 1980s that "Give me a half tanker of iron, and I will give you an ice age." List the causal links that could make this prediction come true, and read the evaluation by Buesseler et al. (2004) that suggests this prediction could not possibly be correct.