منابع مشابه
- - - - - - - - - - - - - - - - - - - - - - - - Investigating the St . Petersburg Paradox with Maple
The Saint Petersburg Paradox is a well known illustration ofhow the psychology of risk and reward can diverge from the underlying mathematics. In the standard game a fair coin is tossed repeatedly until the first head occurs. The payoff is $1 ifthe game terminates in one flip, $2 ifin two flips, $4 if in three, and so on, doubling the payoff for each additional flip required to obtain the first...
متن کاملDevelopment of the Red Maple Understory in Northeastern Oak Forests
Permanent plot records ranging from 13 to 42 years in duration were used to study understory development in four upland oak forests in Massachusetts and New York. All tracts have a dense understory of shade-tolerant species dominated by red maple (Acer rubrum L.) but sparse representation of oak saplings. Mortality rates for red maple have been low compared to other species, and maples have inc...
متن کاملRed reveals branch die-back in Norway maple Acer platanoides.
BACKGROUND AND AIMS Physiological data suggest that autumn leaf colours of deciduous trees are adaptations to environmental stress. Recently, the evolution of autumn colouration has been linked to tree condition and defence. Most current hypotheses presume that autumn colours vary between tree individuals. This study was designed to test if within-tree variation should be taken into account in ...
متن کاملThe benefits of seed banking for red maple (Acer rubrum): maximizing seedling recruitment
Seed banking is assumed to be unimportant for temperate trees, because their seeds are short-lived in soils. However, even short-term seed banking could increase recruitment and affect population dynamics of seed-banking trees. To investigate this possibility, we examined early life-history stages of red maple (Acer rubrum L.), an abundant seed-banking tree in eastern forests. We found that see...
متن کاملRed Maple (acer Rubrum) Response to Prescribed Burning on the William B. Bankhead National Forest, Alabama
Prescribed burning is used as a management tool on national forests in the Southeastern United States to maintain oak (Quercus spp.) -dominated forest or woodland habitat. Few studies have examined response to burning at the stand, plot, and tree level. We documented red maple (Acer rubrum) response to dormant-season prescribed burns and the relationship with fire characteristics. At the stand ...
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ژورنال
عنوان ژورنال: BioScience
سال: 1998
ISSN: 0006-3568,1525-3244
DOI: 10.2307/1313374