The project, which was led by the University of St. Andrews in collaboration with researchers from around the world — including the University of Maine’s Brian McGill — found that despite fears of a global biodiversity crisis, there has been no consistent drop in the number of species found locally around the world.
The research into 100 communities and a total of 35,000 species — from trees to starfish — found that while there were major changes in species found in any one place, the total number of plants and animals did not significantly change, according to the release.
The researchers, who were surprised by the findings, say the study should not detract from the threat many of the world’s species are under, but that policymakers should focus on changes in biodiversity composition, as well as loss, the release states.
“Conservation scientists will need to shift from just talking about how many species are found in a place to talking about which species are found in a place,” said McGill, an associate professor of ecological modeling. “Put simply, species composition changed more often than species number, and these kinds of changes should be a focus for future study.”
The full news release is online.