Qualla: Barro Colorado Island

Barro Colorado Island: Introduction

Sun, 22 Mar 2026 00:00:00 GMT

In 1913, engineers dammed the Chagres River to create Gatun Lake, a critical link in the newly built Panama Canal. As water filled the valley, it swallowed farmland and forest, but the highest hills refused to go under. One of them, a 15.6-square-kilometer hilltop carpeted in tropical forest, became an island in the middle of a man-made lake in the middle of a man-made waterway. That accidental island is now one of the most intensively studied patches of tropical forest on Earth, a living laboratory where scientists have spent more than a hundred years trying to understand how rainforests work.

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Barro Colorado Island: An Island Made by Engineering

Sun, 22 Mar 2026 00:00:00 GMT

Barro Colorado Island owes its existence to the Panama Canal. Before the dam, it was simply a forested hilltop in the Chagres River valley. When Gatun Lake rose around it, the surrounding lowlands vanished beneath freshwater, isolating the hilltop and everything living on it. The...

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Barro Colorado Island: A Century of Counting Trees

Sun, 22 Mar 2026 00:00:00 GMT

The Smithsonian Tropical Research Institute maintains a permanent research station on the island, and the data collected there has shaped modern tropical ecology. A 50-hectare forest plot, established to track every tree with a trunk diameter of one centimeter or more, has been c...

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Barro Colorado Island: The Tapir's Morning Bath

Sun, 22 Mar 2026 00:00:00 GMT

Life on a research island follows its own rhythm. Scientists arrive by boat, usually from the town of Gamboa, and settle into a routine shaped by the forest's schedule rather than any human clock. Elizabeth Royte chronicled this world in her 2002 book The Tapir's Morning Bath, fo...

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Barro Colorado Island: A Forest Behind a Moat

Sun, 22 Mar 2026 00:00:00 GMT

Visitors can tour Barro Colorado Island, but only by arrangement with the Smithsonian Tropical Research Institute. Tours include a boat ride across Gatun Lake, a guided two-to-three-hour hike through the forest, lunch, and a visit to the island's museum. The regulated access keep...

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