GBF is partnering with CurrentCast to share information that they develop with other partners about water stewardship and sustainability in the Great Lakes and surrounding watersheds. CurrentCast is a project of the Center for Transformative Action based at Cornell University. CurrentCast content is owned by ChavoBart Digital Media, Inc. The Atkinson Center for a Sustainable Future at Cornell University provides scientific content support and reviews all editorial idea for the initiative.
Freshwater streams could contribute to climate change… on this CurrentCast.When it comes to greenhouse gas emissions, human activities are the largest source of methane, but there are also natural culprits – and new research suggests they include streams. Methane is a byproduct of bacteria that live in river sediments. According to John Crawford of the University of Wisconsin-Madison, the gas dissolves in water, and is emitted via bubbles.Crawford: “All you need is something like a stick or your foot, and you can stir up these sediments and see these bubbles just erupting from the streambeds.”Crawford says even if streams are not a large source of methane, they should still be included in climate models.Crawford: “It’s going to be really hard if not impossible to get a model that’s running properly unless you know all the components.”