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Microbiology and Biotechnology Nutrition in Microorganisms

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Lesson Objectives Define ecosystem and the terms associated with it. Examine the components and functions of different ecosystems. Understand the significance of statistics in ecological research. Differentiate between research hypothesis and statistical hypothesis

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Activity - Station Give definitions for the following terms Area Niche Food web Food chain Ecosystem Community Population

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Detritivore examples

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Freshwater ecosystem (rivers, lakes, ponds, streams, lakes,and wetlands)

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Functions of the freshwater ecosystem Source of food. It supports the other terrestrial system by providing water. Purifies water supplies Store flood waters, Generate electricity with hydropower, Produce building materials such as timber and clay bricks, Provide places for recreation and attractions for tourists, and Deliver sand to replenish coastal beaches.

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Group Activity Group 1: Steppe ecosystem Group 2: Band (Strip) Pine Forests ecosystem. Group 3: Irtysh river ecosystem. Group4: Marsh/swamp ecosystem.

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What is research?

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Scientific circle of logic Prior Knowledge - Questions - Hypotheses - Methods - Safety arrangements - Data collection - Data analysis - Conclusion - Communication -

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Hypotheses A proposed explanation for a phenomenon based on your observations. A scientific hypothesis must be testable and based on previous observations or extensions of scientific theories.

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Types Research Hypotheses Statistical hypotheses. Null hypotheses (H0). Alternate hypotheses (Ha).

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Research Hypotheses A prediction of study outcomes. Often a statement of the expected relationship between two or more variables.

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Statistical Hypotheses Statement that you want to test. A statistical hypothesis test is a method of making statistical decisions using experimental data. The goal of statistical hypothesis testing is to estimate the probability of getting your observed results under the null hypothesis.

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Example Which chickadee species (Mountain Chickadees vs. Black-capped Chickadees) is more abundant in Kazakhstan.

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Hypotheses Research Hypothesis More Mtn. Chickadees because they are more associated with conifer habitats Statistical Hypotheses Null Hypothesis Ho – No difference in abundance of the 2 sp. Alternate Hypothesis Ha – There IS a difference in abundance