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"Our results reveal how a key dispersal trait -- bird wing shape -- can shape fundamental diversity patterns and island biogeography across scales," said Justin Baldwin, first author of the new study in Ecology Letters.

Among other achievements, the researchers have discovered many new strains and described their distribution and functional biogeography in the world's oceans for the first time.

"I saw a lot of opportunity in them as a model system for investigating biogeography," Bernstein said.

This research was part of his doctoral dissertation at Brown University with Dov Sax, a professor of biogeography and biodiversity and coauthor on the paper.

In other words, they wanted to understand how the broccoli sprout diet affected microbial biogeography in the Crohn's models, since they cannot study this in humans.