使虚弱
发表于 2025-3-25 04:10:00
Patterns of Juvenile Mortality and Recruitment in Plantsly more rigorous habitats (Bradshaw, 1972). The rapid differentiation of local plant populations implies very high selective coefficients, and much of this selection is seen to take place in the time between seed dispersal and adult reproduction.
Tempor
发表于 2025-3-25 07:42:31
Competition and Coexistence of Similar Species) that allows coexistence. This approach seems more promising in relating environmental factors to organism constraints, but, without additional experimental manipulation or genetics study, it cannot be demonstrated that the proposed mechanism is in fact operating to produce the species distributions observed in the field.
Counteract
发表于 2025-3-25 11:45:24
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时代
发表于 2025-3-25 16:45:52
Adaptation from the Perspective of Optimalitylays a surprisingly small role in the origin and maintenance of contemporary adaptive patterns. Finally, I shall summarize some intriguing problems and the prospects for their solution, again emphasizing the peculiarities of plants that will not yield to metaphorical appeals to the ideas of population biology in animals.
Arrhythmia
发表于 2025-3-25 23:05:43
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Self-Help-Group
发表于 2025-3-26 00:55:41
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Mitigate
发表于 2025-3-26 04:42:13
https://doi.org/10.1007/978-1-349-04627-0biology; population; population biology
Munificent
发表于 2025-3-26 11:23:46
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琐碎
发表于 2025-3-26 13:05:43
Macmillan Publishers Limited 1979
装入胶囊
发表于 2025-3-26 19:35:51
George Ledyard Stebbins same year, and a Ph.D. in biology in 1931. At Harvard he worked first with A. L. Fernald on the taxonomy of grasses and the Compositae and then with E. C. Jeffrey, with whom he did his thesis work on the cytology, taxonomy, and evolution of the American species of the genus ..