Keystone species

Keystone Species Sampler: Purple Sea Star

In every ecosystem, an organism has a role to fulfill Learn the keystone species examples and why they are an important player in an ecosystem.

In the 1920s, government policy allowed the extermination of Yellowstone’s gray wolf—the apex predator—triggering an ecosystem collapse known as trophic cascade. In 1995—through use of the Endangered Species Act—the conservation community reintroduced the gray wolf to restore balance. The impact was dramatic.

Beavers (like SPREE’s mascot, Chompers!) are cute, funky looking creatures that have inspired human curiosity for centuries, but did you know that they play an essential role in our river ecosystems? By blocking river flow, a beaver’s dam can create ponds or deeper channels of water. Many fish, like Colorado’s Greenback Cutthroat Trout, thrive in

Exploring Trophic Cascades | This interactive module explores examples of how changes in one species can affect species at other trophic levels and ultimately the entire ecosystem.

define keystone species

Long-term observations by our sea otter scientists confirm that sea otters are transforming the Elkhorn Slough estuary, in positive ways, by devouring predators that keep eelgrass beds from thrivin…

Pictures and facts about what a keystone species is, and 28 examples of North America's most important keystone species. #wildlife #animalfacts #educational

Biodiversity of India - Download as a PDF or view online for free