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keystone species
Table of Contents
Introduction References & Edit History Related Topics
Videos
See how sea otters maintain the balance of kelp-forest ecosystems by consuming sea urchins
“Otters, Algae, and Plants, Oh My”
Quizzes
Chutes d'Ekom - a waterfall on the Nkam river in the rainforest near Melong, in the western highlands of Cameroon in Africa.
Ecosystems
Related Questions
Read Next
Rusty patched bumble bee (Bombus affinis) photographed in the Midwest in 2017. endangered species insect pollination
What Would Happen If All the Bees Died?
Model of global ocean currents and temperatures
How Do Ocean Currents Affect the Biosphere?
The Panamanian Golden Frog is a critically endangered frog which is endemic to Panama.
Extinct in the Wild but Still Around: 5 Plants and Animals Kept Alive by Humans
Path through summer forest in the Ukraine. (trees, lush, green, walk, walkway, road, Ukrainia, Ukrainian, woods)
What Is the Difference Between Primary and Secondary Ecological Succession?
Portrait of western lowland gorilla (Gorilla gorilla gorilla), Bayanga, Central African Republic
Gorilla gorilla, Sula sula, and Other Animals Whose Names Are Tautonyms—the Same for Genus and Species
Discover
Washington DC.,USA, April 26, 1989. Supporters for and against legal abortion face off during a protest outside the United States Supreme Court Building during Webster V Health Services
Pro and Con: Abortion
Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.
10 Famous Artworks by Leonardo da Vinci
Click on image for enlargements of panel sections. The Ghent Altarpiece (open view) by Jan and Hubert van Eyck, 1432, polyptych with 12 panels, oil on panel; in the Cathedral of Saint-Bavon, Ghent, Belg.
The Most Stolen Work of Art
The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)
New Seven Wonders of the World
Vincent Van Gogh, Self Portrait. Oil on canvas, 1887.
Rediscovered Artists: 6 Big Names That Time Almost Forgot
Secret Service Agent Listens To Earpiece
Secret Service Code Names of 11 U.S. Presidents
Andrew Jackson delivering a speech while on his way to Washington, D.C., for his inauguration in 1829. From Harper's Weekly, 1881.
5 Remarkably Close U.S. Presidential Elections

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Videos

See how sea otters maintain the balance of kelp-forest ecosystems by consuming sea urchins
Learn about the sea otter (Enhydra lutris), a keystone species in the kelp...
Video: Encyclopædia Britannica, Inc.

Podcasts

“Otters, Algae, and Plants, Oh My”
Melissa Petruzzello of Encyclopædia Britannica and Kyle Shanebeck of the University...
VIEW MORE in these related Britannica articles: