Posted on May 20, 2011 by Bob Berwyn
Fossil record shows potential for sudden ocean changes as CO2 builds
Oceans could quickly reach a hypoxic tipping point for marine life, according to recent climate change research.
By Summit Voice
SUMMIT COUNTY — After studying prehistoric ocean sediments, a team of researchers from Australia and the UK concluded that increasing concentrations of carbon dioxide in the oceans will likely lead to massive die-offs of marine life.
The fossil record pinpoints a mass mortality in the oceans at a time when the Earth was experiencing a greenhouse effect. High levels of carbon dioxide in the atmosphere and rising temperatures depleted oxygen in the oceans and created large-scale changes in a very short time span — within just a few hundred years.
That mass extinction of marine life in the oceans during prehistoric times is a warning that the same could happen again due to high levels of greenhouse gases. Continue reading
Filed under: climate and weather, Environment, global warming, Marine biology | Tagged: carbon dioxide, climate change, Environmental science, global warming, marine biology, Newcastle University, Proceedings of the National Academy of Sciences, Summit County News, University of Adelaide | 1 Comment »