Life Sciences Commons^™

Nonfish Prey Of Wintering Bald Eagles In Lilinois, Given Harper, D. Scott Hopkins, Thomas C. Dunston

Given Harper

Entropy, Information, And Evolution: New Perspectives On Physical And Biological Evolution, David Depew, Bruce Weber

David J Depew

Can recent developments in thermodynamics and information theory offer a way out of the current crisis in evolutionary theory? One of the most exciting and controversial areas of scientific research in recent years has been the application of the principles of nonequilibrium thermodynamics to the problems of the physical evolution of the universe, the origins of life, the structure and succession of ecological systems, and biological evolution. These sixteen original essays by evolutionists, ecologists, molecular biologists, physical chemists, physicists, and philosophers of science provide the best current summary of this developing research program.Chapters in the book's first part - by …

Reproductive Success And Inflorescence Size Of Calopogon Tuberosus (Orchidaceae), David Firmage, F Cole

F. Russell Cole

Reproductive success of Calopogon tuberosus, which produces no nectar, was investigated in relation to inflorescence size and dispersion pattern. Mean inflorescence size was 2.56 (range 1-10). A bagging experiment showed that insects are required for pollen transfer and that fruits are produced from self-, geitonogamous, and cross-pollinations; fruit set was not 100%. Fruit set of nonmanipulated plants was limited by the number of pollinator visits. Reproductive success increased with increasing inflorescence size, although not above theoretical predictions. However, the probability of producing no fruit or contributing no pollinia decreased with increasing inflorescence size since sequential flowering increased the probability of …