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Surviving and thriving under climate change in the world’s deltas

Researchers from the University of Exeter are investigating the effect of climate change on deltas in South Asia and Africa to understand how people will respond and adapt.

Deltas are economic and environmental hotspots, with many large deltas in South, South-East and East Asia and Africa. The new $13 million project examines four deltas that are home to almost 200 million people, many of whom are farmers who provide food for a large proportion of the population.

The project will work with scientists, demographers and social scientists in the Nile delta in Egypt, the Ganges-Brahmaputra in Bangladesh and India, the Mahanadi in India and the Volta in Ghana. (more…)

The Winners of Mass Extinction: With Predators Gone, Prey Thrives

By Guest PostMay 11, 2011Scienceage of fishes, age of the crinoids, crinoid fossils, devonian era, devonian period, ecology, ecosystem, Environment, fish, fossil record, fossils, hangenberg event, lauren sallan, lotka volterra cycles, marine vertebrate, mass extinction, modern biodiversity, natural experiment, ocean life, ohio state university, paleontologist, population of prey species, predator prey dynamics, predator prey relationships, residual defenses, robert nicholls, thomas kammer, university of chicago, william ausich

*Extinction of fishes 360 million years ago created natural ecology experiment*

In present-day ecology, the removal or addition of a predator in an ecosystem can produce dramatic changes in the population of prey species. For the first time, scientists have observed the same dynamics in the fossil record, thanks to a mass extinction that decimated ocean life 360 million years ago.

What was bad for fish was good for the fish’s food, according to a paper published online in Proceedings of the National Academy of Sciences. Researchers from the University of Chicago, West Virginia University and The Ohio State University found that the mass extinction known as the Hangenberg event produced a “natural experiment” in the fossil record, with results that mirror modern observations about predator-prey relationships. (more…)

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Surviving and thriving under climate change in the world’s deltas

The Winners of Mass Extinction: With Predators Gone, Prey Thrives