Effects of Intraspecific Crowding on Water Uptake, Water Storage, Apical Growth, and Reproductive Potential in the Sahuaro Cactus, Carnegiea giganteaBotanical Gazette (1986)
In the Sonoran Desert the giant columnar cactus, Carnegiea gigantea, often shows a highly clumped distribution because of its frequent establishment beneath tree canopies. An apparent consequence of this distribution pattern, where several Carnegiea are associated with a single tree, is intraspecific competition for limited water. The relative amount of stored water, rate of water uptake, apical growth, and reproductive potential of individual Carnegiea are all lowered as a function of increased levels of intraspecific crowding. These ecological interactions may ultimately affect survivorship and influence patterns of distribution and abundance of this cactus species.
Publication DateSeptember, 1986
Citation InformationJoseph A. McAuliffe and Fredric J. Janzen. "Effects of Intraspecific Crowding on Water Uptake, Water Storage, Apical Growth, and Reproductive Potential in the Sahuaro Cactus, Carnegiea gigantea" Botanical Gazette Vol. 147 Iss. 3 (1986) p. 334 - 341
Available at: http://works.bepress.com/fredric-janzen/13/