Chomp, chomp (Under-1300)

"In the past it was thought that an ecosystem was built from the bottom up... with plant life as the basis from which everything grew. Once healthy plants were established, insects, small rodents, birds, larger herbivores and finally the top predators fell into a balance with each other. Almost all conservation and reintroduction efforts were based on this idea.... However, some ecosystems could not be fixed before reintroducing an endangered top-level animal. In the years since the wolf reintroduction, Yellowstone has become a premiere scientific laboratory for wilderness observation and ecosystem recovery... We have discovered that an ecological effect called the “trophic cascade” has taken over Yellowstone, with the wolves initiating a more natural ecosystem balance than has been seen in over 65 years." (Four or more boards per match - one challenge per team, please - we seek diversity)