Biology 2290F/G Study Guide - Manitoulin Island, Multiple Comparisons Problem, Standard Error

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These are simply sample exam questions: an experiment was conducted to determine the distribution of nitrogen in above-ground and below- ground plant biomass in six habitats of a sand dune system located on the south eastern shoreline of. Five quadrats (0. 5 m 0. 5 m) were randomly placed in each habitat (1st dune ridge. North, 1st dune ridge top, 1st dune ridge south, slack, 2nd dune ridge north, 2nd dune ridge. Above-ground parts of plants were clipped at the soil level and separated into green (live) and dead biomass. Below-ground biomass was obtained from each quadrat by excavating the roots and rhizomes of plants and washing them. Above- and below-ground samples were dried for 6 8 hours at 60 c in a drying oven. Samples were then ground into powder and total nitrogen content (g m-2) was determined by thermal conductivity in a total nitrogen analyzer. The collected data were analyzed using a one-way anova and tukey tests.

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