Symbiosis: A surprising tale of species cooperation - David Gonzales
View full lesson: http://ed.ted.com/lessons/symbiosis-a-surprising-tale-of-species-cooperation Different species often depend on one another. David Gonzales ...
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Are you familiar with the word symbiosis? It's a fancy term for a partnership between two different species, such as bees and flowers. In a symbiosis, both species depend on each other. I want to tell you about a remarkable symbiosis between a little bird, the Clark's nutcracker, and a big tree, the whitebark pine. Whitebark grow in the mountains of Wyoming, Montana and other western states. They have huge canopies and lots of needles, which provide cover and shelter for other plants and animals, and whitebark feed the forest. Their cones are packed with protein. Squirrels gnaw the cones from the upper branches so they fall to the ground, and then race down to bury them in piles, or middens. But they don't get to keep all of them; grizzlies and black bears love finding ...
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Are you familiar with the word symbiosis? It's a fancy term for a partnership between two different species, such as bees and flowers. In a symbiosis, both species depend on each other. I want to tell you about a remarkable symbiosis between a little bird, the Clark's nutcracker, and a big tree, the whitebark pine. Whitebark grow in the mountains of Wyoming, Montana and other western states. They have huge canopies and lots of needles, which provide cover and shelter for other plants and animals, and whitebark feed the forest. Their cones are packed with protein. Squirrels gnaw the cones from the upper branches so they fall to the ground, and then race down to bury them in piles, or middens. But they don't get to keep all of them; grizzlies and black bears love finding ...
