Tag Archives | Ecosystem

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Species turnover: this isn’t the biodiversity you’re looking for

Re-examining biodiversity data from one hundred long-term ecosystem monitoring studies done around the world, a new paper has revealed that the number of species in many of these places has not changed much – or has actually increased. But the researchers did discover something changing rapidly:which species were thriving. University of Vermont researcher Nick Gotelli’s […]

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Grizzlies moving in on polar bears’ turf




Biologists from the American Museum of Natural History and the City University of New York (CUNY) have found that grizzly bears are roaming into areas that were traditionally thought of as polar bear habitats. Grizzly sighting data was recently published inCanadian Field Naturalist and shows that sightings ofUrsus arctos horribilis in Canada’s Wapusk National Park […]




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tibetan_plateau

Fifteen-Thousand-Foot Fossil Find Flummoxes Fossickers




At 15,000 feet above sea level on the desolate Himalayan-Tibetan Plateau, an international research team has found thick layers of lake sediment filled with plant, fish and animal fossils typical of far lower elevations and warmer, wetter climates. The fossils are relatively young (around 2 million years) leading the researchers to ponder what could have […]




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Biodiversity Crunch Threatens Plant Productivity




A new analysis suggests that as plant species around the world go extinct, natural habitats become less productive and contain fewer total plants – a situation that could ultimately compromise important benefits that humans get from nature. Writing in the Proceedings of the National Academy of Sciences, scientists from the University of California, Santa Barbara, […]




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