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Amphibians in a vise: Climate change robs frogs, salamanders of refuge

By Guest PostJune 1, 2014Environmentamphibians, aquatic species, climate change, dona sarkar, frogs, hackathon event, itast, refuge, salamanders, simon fraser university, tcells, university of washington, warming climate

By hightailing it to nearby ponds and shallow waterways, frogs and salamanders have – until now – had a way to evade exotic trout introduced to the West’s high-mountain lakes for recreational fishing.

A warming climate, however, will dry up some of the places where amphibians and their young have found refuge. Researchers in the May 1 issue of Frontiers in Ecology and the Environment write about this challenge and a novel combination of tools that could help land managers, biologists, fishing enthusiasts and other citizens weigh where amphibians are in the most need of help and guide plans for possible fish removals from selected lakes. (more…)

Study: Nearly 500,000 perished in Iraq war

By Guest PostOctober 16, 2013Politicsamy hagopian, armed conflict, birth, death, gilbert burnham, human costs, iraq war, johns hopkins university, mustansiriya university, plos medicine, pre war rate, simon fraser university, university of washington, war, war related deaths

Researchers from four universities, including the University of Washington, estimate that nearly a half-million people died from causes attributable to the war in Iraq from 2003 through 2011.

The results, from the first population-based survey since 2006 to estimate war-related deaths in Iraq and the first covering the conflict’s full timespan, are published Oct. 15 in the open-access journal PLOS Medicine. (more…)

Exhaustive Family Tree for Birds Shows Recent, Rapid Diversification

By Guest PostNovember 9, 2012Natureanalysis, arne mooers, avian diversity, basic hypotheses, behavioral innovation, biodiversity expert, bird species, birds, bumblebees, canada, diversification rate, dna data, earth, eurasia, evolution, evolutionary history, extinction, family tree, fossil, g h thomas, geographic context, geographic space, geographical information, global phylogenies, global picture, habitats, islands, j b joy, k hartmann, life, mainlands, north american, simon fraser university, south america, Space, tasmania, time, tropical species, tunafish, walter jetz, western hemisphere, yale, zeitgeist

A Yale-led scientific team has produced the most comprehensive family tree for birds to date, connecting all living bird species — nearly 10,000 in total — and revealing surprising new details about their evolutionary history and its geographic context.

Analysis of the family tree shows when and where birds diversified — and that birds’ diversification rate has increased over the last 50 million years, challenging the conventional wisdom of biodiversity experts.

“It’s the first time that we have — for such a large group of species and with such a high degree of confidence — the full global picture of diversification in time and space,” said biologist Walter Jetz of Yale, lead author of the team’s research paper, published Oct. 31 online in the journal Nature. (more…)

Tag Archives: simon fraser university

Amphibians in a vise: Climate change robs frogs, salamanders of refuge

Study: Nearly 500,000 perished in Iraq war

Exhaustive Family Tree for Birds Shows Recent, Rapid Diversification