In the Grass, On the Reef

Crown Conchs- Friend or Foe in the Salt Marsh?

Clip: Season 2 | 2m

The ecology of fear plays itself out in other intertidal ecosystems. Crown conchs can decimate an oyster reef when left unchecked, but they can keep periwinkle snails in check in the salt marsh. The conch’s fear effects vary in different conditions. Learn more: http://blog.wfsu.org/blog-coastal-health/?p=5481

Aired: 03/19/13 | Rating: NR

More Extras

• Predatory Diversity at Bay Mouth Bar

  Clip: S2 | 2m 3s

• Can Mud Crabs Hear?

  Clip: S2 | 2m 3s

• Crown Conchs- Friend or Foe in the Salt Marsh?

  Clip: S2 | 2m

More Science and Nature Shows

• Nature

  Capturing the splendor of the natural world, from the African plains to the Antarctic ice.

• NOVA

  Explore scientific discoveries on television's most acclaimed science documentary series.

• America Outdoors with Baratunde Thurston

  Explore our passionate relationship with outdoor spaces.

• The Green Planet

  Sir David Attenborough travels the globe to reveal the secret, incredible world of plants.

• Expedition

  Join Steve Backshall in uncharted territory to uncover the world’s last unknown places.

• Rivers of Life

  Explore the Amazon, the Nile and the Mississippi rivers in this three-part series.