More Choices. Both the pure samples of Ankistrodesmus and Chorella increased dramatically in size and then reached their carrying capacity. Each population should also reach its carrying capacity. The mixed population showed that Chorella is the dominant species over the Ankistrodesmus. Green algae usually occur as single cells or as multi-cellular, threadlike filaments, hollow balls, or flat sheets (Postlethwait and Hopson). The species that has the advantage over the other will establish itself as the dominant species. This experiment was used to study the growth of the algae and the effects of competition when grown in a limited resource. The justification of this experiment is to study how competition affects the different populations. The Chorella population increased rapidly from 702,000 in Week 1 to 1,071,000 in Week.
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During the experiment a carrying capacity will be observed for all populations of algae pure and mixed. Most species of green algae live in shallow freshwater environments. Blue Green Algae is being prevented by minimising Nutrient levels, Chemical controls such as algicides and keeping maximum water flow. The same procedures were followed and the same materials were used for each of the other weeks. After removing the sample, place the tip of the needle into the groove of the Neubauer slide and inject a small portion under the cover slip so it fills the grid. The Ankistrodesmus population slightly increased from 122,000 in Week 1 to 146,000 in Week. The count was taken from each of the two grids called Levy Counting Chambers (Marshall and Walton). A Neubauer slide and microscope will be needed to do what makes a good teacher expository essay this.
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