How Does Road Salting Affect an Ecosystem?

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Presentation transcript:

How Does Road Salting Affect an Ecosystem? Salt crystals on a storm drain that enters a major drinking water supply for the Baltimore, MD metropolitan area. Photo: Ken Belt.

Predict: “I think…” “It affects PEOPLE by…” “It affects animals by…” “It affects plants by…”

A team of scientists in Maryland are discovering that salt from de-icers is becoming a large threat to freshwater ecosystems in our area. From: http://media-2.web.britannica.com/eb-media/90/77990-004-59C9E845.jpg

Not only have they been finding these salts in freshwater streams and rivers, but the highest amounts occur in watersheds with the MOST roads and parking lots! From: http://ecotope.org/projects/projects_images/ws263_aerial_view_2005.jpg From: http://www.baltimorecountymd.gov/Agencies/environment/watersheds/ep_gwynnsmain.html

When there is snow or ice on the ground, de-icers work to melt the ice to make it safer to drive on the roads. Sidewalks are also treated with these salts to keep people from slipping on the ice. From:http://farm4.static.flickr.com/3002/2341303856_0a831f0fa6_o.jpg From: http://weblogs.baltimoresun.com/news/local/bay_environment/blog/salttrucksun.jpg