Biodiversity — or the variety of plants and wildlife in an area — is what allows ecosystems to survive and thrive. Humanity relies on biodiverse planet for food, medicine, shelter, and life as we know it. Luckily, trees are pillars of biodiversity, providing a refuge for wildlife and encouraging ecosystems to live as nature intended. Read on to discover how the Foundation's work supports biodiversity worldwide.

Wait, Killer Whales Need Trees?

How can trees help critically endangered southern resident orcas? In more ways than one. Find out how trees protect and support the delicate ecological web these mammals depend on for their survival.

Explore how trees are at the core of endangered orcas' fight for survival.

Protecting Our Nation’s Most Iconic Bird

The forests of southern Oregon are prime real estate for the bald eagle. And while their numbers have rebounded in the last 50 years, their future survival depends on preserving and reestablishing the ecosystems they call home. Find out how trees help them thrive in a multitude of ways.

Find out how the bald eagle's survival is inseparable from the health of forests.

How to Measure Biodiversity Using Trees

As a backbone of our ecosystems, the story of trees is inseparable from the story of biodiversity on this planet. With unprecedented biodiversity loss, it’s not enough just to plant trees — learn how we use science to plant them where they’ll have the biggest impact.

Learn how science helps us safeguard biodiversity through trees.

Transforming Madagascar

Madagascar is home to one of the most remarkable ecosystems on the planet. Learn about our work with local residents who are growing and planting trees to combat deforestation.

See our work in action with those safeguarding Madagascar's future.

A Tree Can Be a Home

Each year, millions of monarch butterflies travel thousands of miles to oyamel forests in Mexico. However, these critical ecosystems are on the decline. With the monarch butterfly now listed as an endangered species, learn why restoring their winter home in these forests is critical to their survival.

Explore reforestation work critical to the monarch butterfly's survival.

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Read how our work comes to life in forests and communities around the world.

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