Bear Creek Lab Report
Tables 1 and 3 shows the measurements of the 10-meter stretch of Bear Creek that includes a pool and a riffle. The first table also shows the recorded time and weather in which our class collected the data during that particular day. The upper, middle, and lower transects are measured using meters. Each of the transects are first measured by width and then by depth on the: Left edge, mid-stream, and right edge. Then there is description on the substate and the site on both the upper and middle transect. In the lower transect there is a description of substrate and bank. There are many similarities in the type of substrate found in both Cherry Creek and Bear Creek such as moss, mud, rocks, grass, and sand but when it comes to pollutants contaminating
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Our results found that in Bear Creek there was far less pollution due to the fact that it isn't running parallel to a major city like Cherry Creek is. In the case of Bear Creek the organism found, like caddisflies, have to have high oxygen content which means less pollutants. When looking at Cherry Creek there was an abundance of beetles which live in fast moving clean bodies of water. There were far more bloodworms found in Bear Creek compared to Cherry Creek which could be due to the fact that Bear Creeks soils are healthier. Bear Creek had far less pollution than Cherry Creek which led to more variety of species found living in Bear Creek. The results were no different from what I had expected because Cherry Creek is man made that runs parallel to Denver with sewage running off into the creek. Some human errors in this experiment could have been the fact that we did not perform this experiment. Also the people that did the experiment could have miscounted organisms. Pollutions relates to the amount of organisms living in the ecosystem due to the fact that pollutants effect the physical, chemical, and biological conditions of an ecosystem. This has a trickling affect on the whole food web, killing off some of the inhabitants. The more pollutants in a river denies the ecosystem homeostasis therefore harming the macro-invertebrates. If Cherry Creek were not next to a major city like Denver, with sewage running off into it, then it would probably have a healthier aquatic ecosystem. When we compared Bear Creek and Cherry Creek, Bear Creek had the healthier aquatic
Our results found that in Bear Creek there was far less pollution due to the fact that it isn't running parallel to a major city like Cherry Creek is. In the case of Bear Creek the organism found, like caddisflies, have to have high oxygen content which means less pollutants. When looking at Cherry Creek there was an abundance of beetles which live in fast moving clean bodies of water. There were far more bloodworms found in Bear Creek compared to Cherry Creek which could be due to the fact that Bear Creeks soils are healthier. Bear Creek had far less pollution than Cherry Creek which led to more variety of species found living in Bear Creek. The results were no different from what I had expected because Cherry Creek is man made that runs parallel to Denver with sewage running off into the creek. Some human errors in this experiment could have been the fact that we did not perform this experiment. Also the people that did the experiment could have miscounted organisms. Pollutions relates to the amount of organisms living in the ecosystem due to the fact that pollutants effect the physical, chemical, and biological conditions of an ecosystem. This has a trickling affect on the whole food web, killing off some of the inhabitants. The more pollutants in a river denies the ecosystem homeostasis therefore harming the macro-invertebrates. If Cherry Creek were not next to a major city like Denver, with sewage running off into it, then it would probably have a healthier aquatic ecosystem. When we compared Bear Creek and Cherry Creek, Bear Creek had the healthier aquatic