Asimple tree community consists of 4 maples, 3 oaks, and 1 alder. TheShannon-Wiener diversity of this community is:a.0.42.b.0.97.c.1.5.d. 3.e. notpossible to calculate from the data given.
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A
simple tree community consists of 4 maples, 3 oaks, and 1 alder. The
Shannon-Wiener diversity of this community is:
a.
0.42.
b.
0.97.
c.
1.5.
d. 3.
e. not
possible to calculate from the data given.
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- why are forest tree community models important? what are the limitations of this model?Instudies of experimental clear-cuts at the Savannah River Site, open patchesconnected to other open patches:a.had higher butterfly densities.b.supported more frequent butterfly movements.c.had higher rates of plant pollination.d.all of the choices apply.e.both had higher butterfly densities and had higher rates of plantpollination.How would you explain the importance of tropicalrain forests (Core Case Study) to people who thinkthat such forests have no connection to their lives?
- Please select all of the answers that are reasonable interpretations of this figure looking at the mortality of seedling vs the mass of seeds for different species. A. The chestnut blight caused chestnuts to make heavier seeds than any other species B. The proportion of seedlings that survive is better in trees with large seed mass C. There a appears to be a tradeoff. Species that invest a lot of resources into an individual seeds produce fewer seeds that survive well. Species that invest resources in and produce a larger number of lighter seeds produce seedlings with greater probably of dying D. It appears that early-mid successional trees invest more heavily in the number of seeds than the size of seeds E. The proportional survival of tree seedlings is higher in less heavy seeds F. It appears that late successional shade tolerant trees invest more heavily in the number of seeds than the size of seedsGenerally, coniferous trees provide softwood lumber, whereas deciduous trees provide hardwood lumber. a) Which type is much more common in Canada’s forests and in Canada’s forest product output? b) Where should you look to find hardwood trees, north or south? Why? c) Name three hardwood species and three softwood species. d) Describe typical uses for softwood lumber and for hardwood lumber.Which tree is coniferous? A. Blue spruce B. Oak C. Maple D. Ash
- InMichael Huston’s studies of Costa Rican forest diversity, the highest treediversity was found on soils with:a.very high fertility.b.moderate fertility.c.very low fertility.d.either high or low, but not moderate, fertility.e.there was no relationship between diversity and soil fertility.If you were to graph the height of a number of individuals following a normal distribution, where on the graph would most individuals appear? a in the middle b on the bottom c at the lowest end d toward an extremeAs a rule of thumb, foresters (and other biologists) should strive to sample at least 30 points or plots in a stand. WHY?