A marine invader
Species invasion throughPanama Canal? Pacific jingleshell found in Caribbean
January 24, 2014
Scientists first discovered the shiny sea critter in 2009. Genetic testing suggested it crossed the canal on more than one occasion.
Scientists first discovered the shiny sea critter in 2009. Genetic testing suggested it crossed the canal on more than one occasion.
Thousands of years of hunting has turned a substantial meal into a bite-sized snack.
Panama’s infamous canal grass rises from the ashes of fire much faster than trees, complicating reforestation efforts.
20-million-year-old fossil seeds shed light on origins of plant biodiversity in Panama.
Fossil reefs from around the Caribbean show how biologically rich these ecosystems once were — and provide goalposts for conservationists hoping to restore them.
About 66 million years ago, a radical change on the Earth filled tropical forests with flowers. A new catalog of fossil pollen grains may hold an explanation.
Smithsonian scientists who documented massive mortality of corals and reef organisms meticulously studied one of the apparent causes: oxygen deficiency. A Smithsonian paleobiologist asks if the recent fossil record shows signs of similar hypoxia events.
Smithsonian marine biologist Ross Robertson suspects that the regal demoiselle hitched a ride to the Gulf of Mexico on an oil rig. Its outstanding success in its new habitat raises questions about its impact in the Gulf.
Initial results from a massive study comparing marine organisms sampled along the Pacific coast from Alaska to Panama with samples from the Atlantic show that the success of invaders is lopsided.
Perhaps old species, like some older people, gradually lose their ability to deal with changes in their environment. Aaron O’Dea and colleagues show that when the Caribbean was cut off from the Pacific by the rise of the Panama land bridge, evolutionarily old species took longer to expand into new habitats than evolutionarily younger species did.