Asymmetrical exchange
Unequal migration across the land-bridge millions of years ago
October 06, 2020
The disproportionate extinction of South American mammals when the Americas collided is still evident today
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Displaying 40 of 55 results.
Canal grass
Smithsonian scientist clears up Panamanian urban legend
November 30, 2020
How did canal grass arrive in Panama? STRI staff scientist Kristin Saltonstall compared the DNA of sugar cane relatives from around the world to find out.
Genetics of shrinking
First DNA extracted from modern, ancient and fossil tropical shells
February 23, 2021
The next time you eat seafood, think about the long-term effects. Will consistently eating the biggest fish or the biggest conch, mean that only the smaller individuals will have a chance to reproduce?
Martina and the Bridge of Time
A young comic book heroine travels through Panama’s deep history
March 31, 2021
The new graphic novel tells the story of the Isthmus’ formation and evolution through the adventures of a young Panamanian girl.
Flowers!
How the Chicxulub Impactor gave rise to modern rainforests
April 01, 2021
About 66 million years ago, a huge asteroid crashed into what is now the Yucatan, plunging the Earth into darkness. The impact transformed tropical rainforests, giving rise to the reign of flowers.
Catalina Pimiento
The fate and function of marine megafauna
June 11, 2021
Large marine animals generally have unique functions for the ecosystem. They are also more susceptible to extinction when their habitats are altered. Around 3 million years ago, at least one third of the marine megafauna became extinct, possibly due to sea level fluctuations and the contraction of coastal habitats. This also led to a loss of some of their ecological functions. In the current era, many large marine animals are deemed at risk of extinction. What will be the consequences of this potential loss?
Invasion dynamics
Biologists discover that more intense predation in the tropics can limit marine invasions
June 23, 2021
What makes a successful invasion? What keeps invaders out? Are some geographic locations more vulnerable to invasion than others?
Shark dandruff
How can “shark dandruff” contribute to coral reef conservation?
July 06, 2021
Sharks’ bodies are covered with tiny, tooth-like scales called denticles. Shed denticles settle to the ocean floor, where they remain in sediments for years and can be used to understand which sharks lived on a reef in the past.
Paleo Nut
Is this the oldest cashew on the isthmus?
August 03, 2021
A fossil tree discovery in Panama offers clues regarding the establishment of the genus Anacardium in Central and South America
Special Feature
Scientists share lessons about the Anthropocene’s impact on tropical forests
September 28, 2021
Nine articles explore impacts of ancient human societies on tropical ecosystems, revealing the importance of incorporating the paleosciences, social sciences and Indigenous traditional knowledge to solve contemporary environmental challenges.
