December 9, 2014

Chesapeake Bay warming up too

According to the U.S. Geological Survey folks, most of the more than 100,000 creeks, streams and rivers in the Chesapeake Bay estuary are warming, largely driven by rising air temps. That is not really surprising if you consider that if your home's air is too cool, your leather sofa will be quite chilly too.

But the latest USGS research, published in the Climatic Change journal, announces that the Bay's water temp has risen more than 2.5 degrees F between 1960 and 2010. And that does not even include the years since then, with 2014 the hottest year on record so far. Air temps during that same 50 year period rose less than 2 degrees F, so obviously the Bay's waters retain the heat.

One major result of warming waters is increased eutrophication, a fancy way of saying too much nutrients in the water. Animals and plants used to one level of nutrients may move upstream in freshwater or up the Chesapeake. Invasive plants may also find an environment that they prefer.

John Smith and Bartholomew Gosnold might not recognize our local waters for more reasons than the homes dotting the shorelines and the lack of oysters and sturgeon.