Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Christopher D. Heckel"'
Publikováno v:
The American naturalist. 195(1)
Environmental conditions impose restrictions and costs on reproduction. Multiple reproductive options exist when increased reproductive costs drive plant populations toward alternative reproductive strategies. Using 4 years of demographic data across
Autor:
Christopher D. Heckel, Susan Kalisz
Publikováno v:
Oikos. 126:604-613
Publikováno v:
Ecology. 91:319-326
High herbivore pressure is expected to benefit unpalatable species that co-occur with palatable browsed species. However, for five unpalatable understory species we found no evidence of benefit from deer browse. Detailed studies of one species in nat
Autor:
Christopher D. Heckel, Lissa M. Leege
Publikováno v:
Plant Ecology. 189:49-57
Knowledge of ecological characteristics of rare species is important in assessing their threat status. Trillium reliquum is one of four globally vulnerable North American Trillium species. Yet little is known about the ecology and reproductive biolog
Autor:
Adam L. Greenman, Shannon L. Montague, Robert R. Miller, Christopher D. Heckel, Walter J. Koss
Publikováno v:
Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology. 130:163-178
In order to study the effects of EtOH and/or nicotine on brain membrane fatty acid composition, various concentrations of EtOH and/or nicotine were injected into the air sac of chicken eggs at 0 days of incubation. Controls were injected with saline.
Autor:
Christopher D. Heckel, Walter P. Carson, Tarek W. Elnaccash, Thomas H. Pendergast, Michael Urban
Publikováno v:
Ecology. 87:1869-1870
Primack, Richard, and Richard Corlett. 2005. Tropical rain forests: an ecological and biogeographical comparison. Blackwell, Malden, Massachusetts. ix + 319 p. $74.95, ISBN: 0-632-04513-2 (alk. paper).