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sci256 Final

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sci256 Final

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sci256Lisa Allen Final
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Date Created: 11/12/15
Lisa Allen 1 Week 5 Final Week 5 Final Lisa Allen SCI/256 March 8, 2012 Linda Pope  Lisa Allen 2 Week 5 Final Week 5 Final 1) Discussion questions from week One:  Question 3 What is an example of a J­curve population in nature? Explain. What is an S­curve?  Define carrying capacity.  The Exponential curve (also known as a J­curve) happens when there is no boundary line  to the size in population. An exception would be a period of a plague that results in numerous  deaths which would produce a noticeable but small downward spike in the curve. The Logistic  curve (also known as an S­curve) shows the result of a limiting factor such as in the carrying  capacity of the environment (Farabee, 2010). 2) Discussion questions from week Two:  Question 1 Identify a natural ecosystem in which you live or one near to where you live. How does  this ecosystem support you? At what trophic level are you? Why?  There are quite a few ecosystems where I live as I live in a very rural area in Gaston.  There are natural forests all around and a manmade lake called Hagg Lake a few miles from my  home. On the East side of my home there is a small creek (Scoggins Creek, a tributary of the  Tualatin River) that drains into the lake. Sain Creek and Tanner Creek also feed into the lake as  well. Hagg Lake is used for recreation in the summer and flood control in the winter. It provides  irrigation water to agricultural areas of the basin, and municipal and industrial water to the cities  of Forest Grove, Cornelius, Hillsboro, Beaverton, and several smaller towns. Water from Hagg  Lake also is used by Clean Water Services, the primary wastewater­ and storm water­ management agency in the Tualatin River Basin, to supplement the flow in the lower Tualatin  Lisa Allen 3 Week 5 Final River in order to enhance water quality and help the river meet water quality standards (Rounds,  2007). 3) Discussion questions from week Three:  Question 4 Is your community people­ or car­oriented? Why or why not? How does that affect  energy use and sustainability of your community?  The community that I live in is a car oriented community. It is a car oriented community  because we live pretty much out in the middle of nowhere by Hagg lake in Gaston, and there is  no public transportation. I have heard that Tri­met had been talking about bring public  transportation out that far because of the lake and people wanting to go there but no being able to because they do not drive. However it has not happened. I have lived in Gaston, for 26 years and  they had been talking about bringing Tri­met out that far since I was 10 years old. I feel that it  will never happen as the lake is only open for 6­7 month out of the year and I feel that they do  not think that it would be cost effective.  4) Discussion questions from week Four:  Question 1 How could your community better manage its water resources?  At this time I feel that my community is alright in the area. In fact there is so  much excess water that it is diverted to other areas to support their water needs as shown in  question number two Lisa Allen 4 Week 5 Final 5) Discussion questions from week Five:  Question 4 Who should manage the natural resources: legislature, public, scientists, or special  interest groups? Why?  In the community that I live I feel that Stimpsons mill across the street from my house  should manage the natural resources as they own most of the forest and small ponds in the area. I see them cutting down trees however I do not ever see them planning new ones. Just a few years  ago they burned a lot of the trees that were not useable but I have not seen them trying to replace  the trees that they destroyed. If they do not want to rebuild the forests then should not be able to  cut them down. If they “do not have time” they should elect someone in the community to do it  however they should have to pay for the rebuilding of the forests not the person that they elect.  Lisa Allen 5 Week 5 Final References Farabee, M.J. (2010). Population Ecology. Retrieved from  http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookpopecol.html#Population Growth Rounds, S. (2007). Henry Hagg Lake Water Quality Model. Retrieved from  http://or.water.usgs.gov/projs_dir/pn356/hagg_lake/

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