Effects on The Environment Lab Report

Effects on The Environment Lab Report

the protozoan community. For this week, it was intended for us to you look at samples through a microscope and identify any protozoans present; unfortunately, the weather did not cooperate, and only a few of us were able to check our experiments. Recall the different treatments that were set up last week (in addition to the control): De-Icer to add to your flask None (control) NaCl-based de-icer solution MgCl-based de-icer solution CaCl-based de-icer solution HCOONa/urea-based de-icer solution (sodium formate/urea) sand Claims of product/environment n/a No claims Plant-friendly environmentally-friendly Pet-friendly (doesn’t burn paws/non-toxic if paws licked) Environmentally-friendly Beet juice mixture Environmentally friendly Melts ice at what temperature n/a 10-15 F -20 F 0F -2 F Does not melt ice, rather serves as an abrasive 20 F Directions for this activity: Review the Results section, the data collected by the students who were present, recorded in Tables 1-7 pages 2-3, and answer the questions in the Conclusions section on page 3. PAGE 1 RESULTS (Tables 1-7) Table 1. Control—Protozoa and algae identified with approximate abundance for each Proto zoan/ algae Paramecium Stent or/ vortic ella ++ Vol- Scene- Pond vox desmus scum BG algae Litonotidae roti fer clos teri um eugl stylo ena nchi a abun + + + ++ + +++ ++ ++ ++ dance +++ + = present, but only a few; ++ = present, in moderate numbers; +++ = present, numerous Table 2. NaCl– Protozoa and algae identified with approximate abundance for each Protozoan/ Nothing algae living abundance Nothing living + = present, but only a few; ++ = present, in moderate numbers; +++ = present, numerous Table 3. MgCl— Protozoa and algae identified with approximate abundance for each Protozoan/ Nothing algae living abundance Nothing living + = present, but only a few; ++ = present, in moderate numbers; +++ = present, numerous Table 4. CaCl– Protozoa and algae identified with approximate abundance for each Protozoan/ Green algae Pond scum Blue green algae algae abundance + + + + = present, but only a few; ++ = present, in moderate numbers; +++ = present, numerous Table 5. HCOONa + urea — Protozoa and algae identified with approximate abundance for each Protozoan/ Blue-green Pond scum algae algae abundance + + + = present, but only a few; ++ = present, in moderate numbers; +++ = present, numerous PAGE 2 Table 6. Sand — Protozoa and algae identified with approximate abundance for each Proto zoan/ algae Paramecium Stent or/ vortic ella ++ Vol- Scene- Pond vox desmus scum BG algae Litonotidae roti fer clos teri um eugl stylo ena nchi a abun + + + ++ + +++ ++ ++ ++ dance +++ + = present, but only a few; ++ = present, in moderate numbers; +++ = present, numerous Table 7. Beet juice mixture — Protozoa and algae identified with approximate abundance for each Proto zoan/ algae Paramecium Stent or/ vortic ella ++ Vol- Scene- Pond vox desmus scum BG algae Litonotidae roti fer clos teri um eugl stylo ena nchi a abun + + + ++ + +++ ++ ++ ++ dance +++ + = present, but only a few; ++ = present, in moderate numbers; +++ = present, numerous CONCLUSIONS—Answer the following questions: 1. Describe the overall results in paragraph form here: 2. What conclusions can you draw from the class data in regards to the environmental effects of each de-icer on protozoan and algal communities? 3. De-icing roadways is critical in keeping the public safe. Given the data, what do you feel a solution may be to keep both waterways and the public safe? Is there a compromise/middle ground in this situation? PAGE 3
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