Scientists studying genetic variation and gene flow in a population of tortoises (Gopherus agassizii) in California’s Mojave Desert, were surprised recently to discover that two roads built in the desert in the 1970s had a noticeable impact on the population’s genetic structure. [...more]
Meet Rachel Page, a Smithsonian scientist in Panama who studies frog-eating bats (fringe-lipped bats), among other topics. Her current research focuses on learning and memory in neotropical bats, combining field studies with laboratory experiments to learn about predator cognition and its effects on the evolution of their prey. [...more]
This photo shows developing embryonic cells of the coral species Acropora tenuis, from the Great Barrier Reef in Australia. Researchers from the Smithsonian Conservation Biology Institute, Hawaii Institute of Marine Biology and other partnering organizations spent two weeks at the end of November collecting sperm and embryonic cells during spawning from this and one other [...] [...more]
In 2011, scholars from three institutions—National Museum of American History Curators Carlene Stephens and Shari Stout, Library of Congress Digital Conversion Specialist Peter Alyea and Lawrence Berkeley National Laboratory Scientists Carl Haber and Earl Cornell—came together in a newly designed preservation laboratory at the Library of Congress to recover sound from those recordings made more than 100 years ago. [...more]
For the first time, researchers from the Smithsonian Conservation Biology Institute’s Migratory Bird Center analyzed how songbirds are affected by both general noise and the acoustics of hard human-made surfaces in urban areas. [...more]
Studies at two remote Smithsonian Institution Global Earth Observatory sites in Panama and Thailand show the first evidence of long-term effects of nitrogen pollution in tropical trees. [...more]
The first DNA barcoding survey of crustaceans living on samples of dead coral taken from the Indian, Pacific and Caribbean oceans suggests that the diversity of organisms living on the world’s coral reefs—one of the most endangered habitats on Earth—is seriously underestimated. [...more]
It is one of the rarest shrubs in the southeastern United States but for scientists trying to save it, the critically endangered Michaux’s sumac (Rhus michauxii) is not cooperating. [...more]
Scientists from the Smithsonian Migratory Bird Center have found that fledgling catbirds living in the suburbs are extremely vulnerable. Almost 80 percent are killed by predators before they reach adulthood. Nearly half of the deaths are connected to domestic cats. The team studied catbird nests in 3 suburban neighborhoods in Maryland: Spring Park, Opal Daniels Park, and Bethesda. Learn more about this 2011 study by clicking here. (Catbird photo by Gerhard Hofmann)
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