Human survivorship curve based on data from Pearl 1941 for white females during 1929-31. Dall sheep survivorship curve based on data from Murie 1944. Mallard duck survivorship curve based on data from Hickey 1952.
Human survivorship curve based on data from Pearl 1941 for white females during 1929-31.
Dall sheep survivorship curve based on data from Murie 1944.
Mallard duck survivorship curve based on data from Hickey 1952.
Revised: August 25, 2011