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All Posts Tagged With: "ecosystems"

American Eagle: The Upper Mississippi River Valley

In autumn, many bald eagles from northern areas find their way to the Upper Mississippi River Valley, where stretches of the river do not freeze.

Dec 29th, 2010 | 38 comments

Christmas in Yellowstone: Interactive Map: Animals of Yellowstone

Select an animal name to see where each animal can be found within the park.

Dec 16th, 2010 | 3 comments

Andes: The Dragon’s Back: Introduction

(Airs Sunday, July 18) The Andes is an extraordinary world of diverse terrain, extreme temperatures and multifarious wildlife.

Jun 24th, 2010 | 47 comments

The Queen of Trees: Photo Essay: An Extraordinary Ecosystem

The sycomore fig tree is the center of an entire ecosystem, producing several tons of fruit a year and feeding a greater variety of animals than any other kind of tree in Africa.

Aug 26th, 2009 | 10 comments

The Queen of Trees: Video: Giving Food and Shelter

Located along the riverbanks of southern Kenya, the sycomore fig tree feeds more varieties of animals than any other kind of tree in Africa.

Aug 24th, 2009 | 19 comments

Under Antarctic Ice: Video: Full Episode

Watch the full episode of "Under Antarctic Ice" online now.

Sep 18th, 2008 | 33 comments

Symbiotic Strategies: Video Segments: The Secret World of Sharks and Rays

Excerpts from NATURE examine interrelationships between sharks and other species in the marine ecology. Human impact in the ecosystem includes the shark fin industry.

Jul 15th, 2008 | 18 comments

Video-Enhanced Lesson

Symbiotic Strategies: Lesson Overview

This video-enhanced lesson focuses on symbiosis and ecological relationships. Using sharks and marine species as examples, students will investigate the many ways that species that live in close proximity to each other might interact in an ecosystem, and will then explore the ways that ecosystems can be thrown out of balance, often as a result of human action. (Grades 9-12)

Jul 15th, 2008 | 4 comments

Deep Jungle: Monsters of the Forest: The Amazing Brazil Nut Tree

Brazil nut trees are among the giants of South America's Amazon. They tower up to 200 feet high, and they provide habitat and food for numerous forest creatures.

Apr 24th, 2005 | 16 comments
PBS Nature Flickr Group
 
  • Waterfall near Quiet Lake
  • Mountain Chickadee
  • Atlantic Puffin
  • Atlantic Puffin
  • Rufescent Tiger Heron
  • That's a mouthful
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  • Red-spotted Newt
  • Caminhos da Serra-Piraquara
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  • Beezey
  • Sunset on Logan Pass
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