A Century Later: Scientists Study the Impact of Crayfish Introduction at Crater Lake National Park (U.S. National Park Service)

Deterioration of the Littoral–Benthic Ecosystem Following Recent Expansion of Signal Crayfish (Pacifastacus leniusculus) in the World's Clearest Large Lake

Crayfish taking toll on newts, Environmental news, Lewiston Tribune

Troubled Waters · National Parks Conservation Association

Crayfish in Crater Lake threaten newt population, Email Blast

ESA protection requested for Crater Lake newt, Associated Press

A Century Later: Scientists Study the Impact of Crayfish Introduction at Crater Lake National Park (U.S. National Park Service)

PDF) The State of Crayfish in the Pacific Northwest

A Century Later: Scientists Study the Impact of Crayfish Introduction at Crater Lake National Park (U.S. National Park Service)

Crayfish in Crater Lake threaten newt population - Washington Times

The impact of introduced crayfish on a unique population of salamander in Crater Lake, Oregon (U.S. National Park Service)

Probability of Mazama newt (Taricha granulosa mazamae) presence along

The Lake in the Sky - Project Klamath