HALIFAX -- Bill Freedman, a respected educator and author who championed Canadian conservation, has died.

He was 65.

The Nature Conservancy of Canada says Freedman, a 25-year volunteer with the organization, died Saturday at home in Halifax following a battle with cancer.

An ecologist and former chairman of the biology department at Dalhousie University, Freedman authored more than 100 scientific papers, publications and science textbooks.

The conservancy says Freedman served as its regional and national board chairman and wrote a book on the organization's 50-year history in 2013.

Just last week, the conservancy announced it would dedicate its 150-hectare Prospect High Head site near Halifax as the Bill Freedman Nature Reserve.

"He taught us all to cherish our natural world," John Lounds, conservancy president and CEO, said in a statement. "We remember a generous, thoughtful man who leaves a conservation legacy right across this country that will be appreciated by generations to come."