Effiel Tower
Brett Corrigan 10/28/11
Leaf Pack conclusion Yellow
Based on the lab data the stream water quality is fair. The biotic index shows the “degree of organic pollution”. The biotic index shows the water quality, it was 5.7. We calculated the biotic index by looking at pollution tolerant value. In conclusion the biotic index shows weather or not the water is healthy. Based on the evidence from our lab data we found mostly tolerant organisms such as we found a lot of Hydropsychidae (163) and they were tolerant (tolerance 5). Another example we found is the Chirionomidae (50) and they were tolerant (tolerance 6). One example that we didn’t find much of/a lot of were the Caddisflies we found 6 and the pollution tolerance was 2.8 which indicates to us that it is pollution sensitive. Lastly we didn’t encounter Stoneflies/Plecoptera we found 0 (none of them were found!) and they were pollution sensitive value of 1. There are lots of ways that pollution can get into streams and cause the pollution level to rise. For an example, everybody brushes their teeth, washes their hands, and goes to the bathroom. All of those toxic wastes go into sewers and let’s say an extremely rainy day occurred and flooded the sewers so the level of water is above surface and it flows all the way down to the river. So what happens is that the toxic waste flows into the water and kills living organisms in the stream because it could go through there gills and flow right into their blood stream. One more factor to rise Sheldrake Streams pollution level to rise is that there is a gold course right across the street and golfers spay pesticides on their selves to prevent bugs from coming and the rain washes those pesticides into the river harming the organisms in the stream.
Leaf Pack conclusion Yellow
Based on the lab data the stream water quality is fair. The biotic index shows the “degree of organic pollution”. The biotic index shows the water quality, it was 5.7. We calculated the biotic index by looking at pollution tolerant value. In conclusion the biotic index shows weather or not the water is healthy. Based on the evidence from our lab data we found mostly tolerant organisms such as we found a lot of Hydropsychidae (163) and they were tolerant (tolerance 5). Another example we found is the Chirionomidae (50) and they were tolerant (tolerance 6). One example that we didn’t find much of/a lot of were the Caddisflies we found 6 and the pollution tolerance was 2.8 which indicates to us that it is pollution sensitive. Lastly we didn’t encounter Stoneflies/Plecoptera we found 0 (none of them were found!) and they were pollution sensitive value of 1. There are lots of ways that pollution can get into streams and cause the pollution level to rise. For an example, everybody brushes their teeth, washes their hands, and goes to the bathroom. All of those toxic wastes go into sewers and let’s say an extremely rainy day occurred and flooded the sewers so the level of water is above surface and it flows all the way down to the river. So what happens is that the toxic waste flows into the water and kills living organisms in the stream because it could go through there gills and flow right into their blood stream. One more factor to rise Sheldrake Streams pollution level to rise is that there is a gold course right across the street and golfers spay pesticides on their selves to prevent bugs from coming and the rain washes those pesticides into the river harming the organisms in the stream.