As seen within the t test calculation and it

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As seen within the t-test calculation and it resulting in a number of 0.20628 there is no significant difference between the composition of the adult species and the sapling species. Thus, relating directly to the composition of the canopy and of the understory due to the fact that adult tree species will make up the canopy and correspondingly the sapling species will make up the understory. It also can be determined that the forest of Tryon-Weber will become less diverse in 100 years. This is seen by the comparisons of the ISI of adult and sapling species within this ecosystem. Meaning that the ISI for the adult species is 2.00621 and the ISI for sapling species is 2.290875, and an increase in this value is seen to occur from the adult to the saplings.
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I believe that deer herbivory is contributing to this decrease in diversity seen within the sapling tree species and thus the understory of this ecosystem. This is because deer’s browsing habits target specific species within the understory and increase the mortality rate of these corresponding targeted species. This then leads to less species surviving and thriving into the canopy layer of the ecosystem (Long et al. 2007). This result is consistent with both of the papers. In which they describe the exact same reasoning for a decrease in overall diversity. Specifically, that deer influence the mortality rates of the understory and then this relates to the fact that specific species become more important than others (Long et al 2007, Schumacher). Figures: Figure 1: This shows the relative abundance of the five most abundant plant species contained within the Tryon-Webber woods. The above plant species were those of adults. Adult plants were classified based upon the criteria that their height was greater than 12 cm. Each plant was found within a 100 m transect, which was then consequently broken into 10 m by 10 m plots. Figure 2: The relative abundance of adult plant species within the Tryon-Weber woods field site. The five most overall abundant plant species were quantified within a 100 m transect, which was then consequently broken into 10 m by 10 m plots. The recorded number of adult species within Tryon-Weber was then divided by the total number of adult and sapling plant species that resided within the corresponding plot in order to obtain the percent relative
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abundance. The species of Hickory was found to be the most abundant of the adult species with a
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  • Fall '12
  • TA
  • Ecology, plant species, relative abundance, Hickory

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