Why the Beaver Should Thank the Wolf

From the NY Times, a great op-ed piece connecting our work on sea otters with wolves and elk in Yellowstone!  Couldn’t be more perfect.  Notice the little Sea Otter poking his head out of the reads below the elk.

Scientists call this sequence of impacts down the food chain a “trophic cascade.” The wolf is connected to the elk is connected to the aspen is connected to the beaver. Keeping these connections going ensures healthy, functioning ecosystems, which in turn support human life.

Another example is the effect of sea otters on kelp, which provides food and shelter for a host of species. Like the aspen for the elk, kelp is a favorite food of sea urchins. By hunting sea urchins, otters protect the vitality of the kelp and actually boost overall biodiversity. Without them, the ecosystem tends to collapse; the coastal reefs become barren, and soon not much lives there.

Read the full article here.

Here’s the full photo!