Population ecology is the study of how populations — of plants, animals, and other organisms — change over time and space and interact with their environment. Populations are groups of organisms of ...

Revue de l'Institut International de Statistique / Review of the International Statistical Institute, Vol. 35, No. 3 (1967), pp. 247-263 (17 pages) This paper deals with the study of k characters of a ...

1. First flowering dates are occurring earlier than they did in the past in many locations around the world. It is sometimes assumed, implicitly or explicitly, that the changes in first flowering ...