The stewards of several communities were also trying to respond to the impacts and disruptions caused by the construction of the first phase of the hydroelectric projects in these years. These impacts included those foreseen by Cree hunters, such as flooding and the opening up of lands to outsiders (see above), and others not foreseen by Cree or by governments, including a new source of increased methyl mercury contamination in the reservoirs and the downstream sections of rivers. See Orkin and Hazell (1991) for a summary of impacts.