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Why the Earth is Green: Trophic Cascades on Land and Water

We have been discussing the powerful and essential ecological link between apex predators, their prey, and the foods prey eat. Based on the revolutionary ideas of Hairston, Smith, and Slobodkin, who in 1960 ingeniously proposed that the world is green because predators limit their plant-eating prey, trophic cascades science has since then explored the consequences of predator removal from ecosystems worldwide.
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Aldo Leopold and the Mark of the Wolf's Tooth

In the early 1900s, while cruising timber as a young forester, American conservationist Aldo Leopold, founder of the science of wildlife biology, encountered a female wolf with her pups. The common wisdom of that era was that the only good predator was a dead one, so he and his crew opened fire. But as he stood there watching the “fierce green light” fade in the wolf mother’s eyes, he felt a sharp, surprising pang of remorse. It would take him decades to parse out his feelings about her death.
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The Path to Restoration

I was privileged to meet one of the leading experts in mangrove restoration in his home state of Florida. Robin Lewis has spent his working life fine-tuning methods for restoration former mangrove wetlands to full ecological functionality. As he explained and showed me, mangrove restoration is a lot more than just planting seedlings in the mud. . . Read more »
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Panthers and Airboats

As well as being a fabulous place to get to know mangroves, the Ten Thousand Islands National Wildlife Refuge is home to one of nature’s rarest big cats: the Florida panther. I talked about panther management with the leader of the recovery program while airboating around the Picayune Strand. That night, a panther showed itself, to the elation of one person and the frustration of another . . . Read more »
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Kill the Frogs?

Feeling overwhelmed by civilization? Dreaming of getting away from it all? Before embarking on your great escape, you should know that these days we intensively manage all our "wilderness" areas, the wildlife you encounter out there will undoubtedly include exotic species that are wreaking ecological havoc, and that some natural resource managers now believe there is nothing we can or should do about these increasingly human-dominated "novel ecosystems." Welcome to the Brave New Eco-World.
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Earth Day at the Shack

Three springs ago I visited the Leopold Memorial Reserve—the depleted Wisconsin sand county farm Aldo Leopold bought in 1930 known as the “shack.” In the 1940s he recorded in his field notes that without large predators such as wolves to regulate their numbers, deer were eating aspens and other trees and shrubs to death. I wanted to see whether this was still so.
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Living In A World of Extremes

For over 30 years, I’ve worked in rainforest ecosystems. My senses are finely tuned to the sweet smell of cedar and pine, sap runs through my veins, and I have learned how to read the forest like the pages of a good mystery novel. But each year, I do an annual trek to the desert where rainforests give way to spiny, prickly things with names like pincushion and rainbow cactus, prickly pear cactus, and ocotillo. This year, I arrived in the Sonoran desert just outside Phoenix, Arizona during an early spring bloom where I was greeted by a kaleidoscope of colors and unfamiliar scents.
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Bird Survey Suggests If You Plant It, They Will Come

The results of last month's annual Hakalau Forest National Wildlife Refuge Bird Survey indicate that birds may colonize reforested areas much faster than experts had predicted. This year's surveyors spotted all five of the common native forest birds and four endangered forest birds within sections of the refuge that two short decades ago had been treeless areas dominated by non-native plants and animals. "I never thought I'd live to see this," said Jack Jeffrey, who coordinated this bird survey and was the refuge biologist from 1990-2008.
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Brothers in Arms

In my travels through the mangroves of the Americas I was keen to learn how mangroves had influenced or been incorporated into local cultures. In Caravelas, in the Brazilian state of Bahia, I met three remarkable brothers who promote the indigenous culture of Bahia—a culture that is infused with images and myths relating to mangroves. Here is a blog post I wrote from Caravelas ... Read more »
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World's Most Unique and Endangered Forest Needs Our Help

No, it's not in Brazil or Borneo. It's actually in the good old USA, literally and figuratively clinging to a steep slope in a drainage called Mahanaloa Gulch on the Hawaiian Island of Kauai. We need to stop twiddling our thumbs and SAVE THIS FOREST NOW.

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