BIOL 1070 Midterm: bio1070 midterm2
26 Oct 2015
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Woodlot size order: (smallest to largest: browns woods, north campus ravine, the dairy bush, the arboretum true and false: true, garlic mustard in browns woods. Biodiversity: biodiversity is often used as a non-technical term, which refers to the different scales of biological variation. In general, biodiversity comprises three scales of variation: genetic, species, and ecosystem. Species richness: species richness is defined as the number of species present in a defined area such as a community or ecosystem. The appropriate sampling intensity required to estimate richness is determined by plotting the number of new species observed with each sampling unit. Sampling species richness is complete when the species area curve is saturated (levels off at 55 plots in the figure below). Abundance: species abundance refers to how common a species is in a defined area and can be measured as percent cover, biomass or frequency of individuals per species.
