Lab 3 – Biodiversity
Demonstration 1: Interdependence of Species
Table 1: Interdependence of Species Results
Species Missing (Bead Color and Name)
Red = Flowers
Yellow = Bees
White = Lichen
Orange = Trees
POST LAB QUESTIONS
1. Explain how the ecosystem was affected by the missing species for each round of the demonstration.
a. Round 1 = If flowers were removed from the ecosystem, then bees would no longer be able to create honey or pollinate edible plants and trees that humans depend on for food. b. Round 2 = Bees are pollinators. If this species were to be removed from the ecosystem, then agriculture would be impacted and that would mean less food for humans. c. Round 3 = If lichen were to be removed from the ecosystem, then soil wouldn’t provide plants with nutrients. d. Round 4 = If trees were removed from the ecosystem, then flowers and plants wouldn’t have trees to help protect them from wind and shade them from the sun.
2. Provide one action we as humans engage in that leads to the extinction of each of these components.
Action affecting Lichens = Lichens obtain nutrients from the air, water and sun. Industrial pollutions can affect their ability to create soils for plants to grow. Action affecting Trees = Deforestation is devastating tree populations worldwide, largely due to urbanization. Action affecting Flowers = Air pollution is causing a number of species of flowers to go extinct. According to a British study reported on by The Guardian (Jowil, 2010), more than 25 percent of flowers currently face extinction. Action affecting Bees = Because bees depend on flowering plants and trees for food, deforestation is having a large impact on the bee population.
3. Provide three specific actions that humans can take to minimize our impact on the ecosystem and ensure the survival of lichens, trees, flowers, and bees.
Action 1 = Riding the air pollutants created by automobiles may go far in reducing the impact...
References: Boyle, A. (2015, June 19). Scientists Build Case for 'Sixth Extinction ' ... and Say It Could Kill Us. Retrieved June 20, 2015, from http://www.nbcnews.com/science/environment/scientists-build-case-sixth-extinction-say-it-could-kill-us-n378586
Jowil, J. (2010, July 7). Over 25% of flowers face extinction – many before they are even discovered. Retrieved June 20, 2015, from http://www.theguardian.com/environment/2010/jul/07/flowering-plants-threat
Lab 3 Biodiversity. (2012). Ashford Environmental Science Lab Manual CD.
Ceballos, G., Ehrlich, P., Barnosky, A., Garcia, A., Pringle, R., & Palmer, T. (2015, June 19). Accelerated modern human–induced species losses: Entering the sixth mass extinction. Retrieved June 20, 2015, from http://advances.sciencemag.org/content/1/5/e1400253.full
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