Ecological niches and their importance everywhere

I have a science background and love to compare environmental systems. Some systems may mirror others to some extent but many have unique relationships.

Some people have a handle on what are called key species or perhaps apex predators. These species may be important to maintain environmental balance. Often new people with a science background come into a science field with an open mind and new ideas. A new college graduate moved into the Pacific northwest with a new career in marine biology. He was stationed on the coast near saltwater. He decided to see what happened if he removed all of the...