The Ramsar Convention on Wetlands is an international treaty for the conservation and sustainable utilization of wetlands, i.e., to stem the progressive encroachment on and loss of wetlands now and in the future, recognizing the fundamental ecological functions of wetlands and their economic, cultural, scientific, and recreational value. Since the convention became effective in Poland on 22 March 1978, the designation of Wetland of International Importance has been applied to thirteen locations in the country, which combine to form an area of .