BIOLOGY 173 Study Guide - Final Guide: Bes, Toothpick, Prokaryotic Small Ribosomal Subunit
11 Dec 2015
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Document Summary
Conditions influencing diversity in a community are studied by measuring responses to interspecific and intraspecific interactions of tomatoes, oats, and alfalfa. Compare the effect of plant interactions on growth of individuals, and growth of the population. Niche-partioning: interspecific competition is reduced because the species use two different resources. Over-yielding: when different crop species are grown together may lead to increased food production. T-test: compares two means. (if calculated t is different from critical t, then sample sizes are different. (small t for large sample sizes) Ecology: the interactions of an organism with other organisms and its environment. Two-species interactions: outcome when both organisms are present. Competition is an interaction between two organisms or species that harms each of them. Competition is over a limiting resource (food, water, light, nesting space, pollinators) Can be interspecific (between species) or intraspecific (within species) If inter < intra allows more species to coexist. Competition reduces the growth, survival and/or reproduction of both species.
