People tend to pay more attention to how much food they are eating than to how rich their diet is in essential micronutrients like iron. However, if we do not get enough iron, we can become anemic, which leaves us sluggish and can impair growth and development. In the same way, biologists do not usually consider insufficient iron supply as being an important factor for the nutrition of wild animals, and instead tend to think about the total amount of food available to them. A new paper led by ICTA-UAB researchers Eric Galbraith and Priscilla Le Mézo and published in the journal Frontiers in Marine Science proposes that, in fact, the available iron supply in large areas of the ocean is insufficient for most fish, and that—as a result—there are fewer fish in the ocean than there would be if iron were more plentiful.
Click here for original story, Iron availability in seawater, key to explaining the amount and distribution of fish
Source: Phys.org