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Ecology Fair University of Minnesota Monarch Lab

Abstracts from Richfield STEM School 2012

Richfield STEM School
7020 12th Ave S
Richfield, MN 55423

Year: 2012
Teacher(s): Diane Erdmann

Cattails: Sun or Shade?

Adrian R, Jonathan B, Lexi E

We became curious about the locations of the vegetation that supported the aquatic life in a small storm water pond located at Christian Park in Richfield, Mn. We decided to survey whether or not cattails there occured more in shaded or sunny locations. We concluded that cattails tended to grow more often in sunny areas of the storm water pond.


Comparing Macroinvertebrate Species at Storm Water Pond Inlet and Outlet

Brody K, Corynn N

After sampling for macro and micro invertebrates in a small storm water pond located at Christian park in Richfield, Mn, we became curious about whether we would find more invertebrates at the pond's inlet or at the pond's outlet. Our survey was complicated by a heavy rainfall in the days just before we gathered samples, but we concluded that there were more invertebrate species found at the inlet than were found at the outlet.


Dissolved Oxygen: Change Over Time In A Closed Container

Andres S, Jessie M

After several days of invertebrate sampling and testing for dissolved oxygen and pH levels at a small storm water pond located at Christian Park in Richfield, Mn, we noticed that water samples we had brought back to our lab smelled bad when we opened them a few days later. We wondered why they smelled bad, and decided to test the dissolved oxygen levels when we gathered the samples and then retest the closed samples a few days later. We were surprised that the DO difference was not more obvious after 5 days, and wondered if our tests were not very good quality tests.


Where Are They? Pond Invertebrates: Open Water or Vegetation

Esmeralda E, Owen L, Stephanie C

After learning about and sampling for macro and micro invertebrates at a small storm water pond located at Christian Park in Richfield, Mn, we wondered if there would be more invertebrates living near the vegetation or in the open water of the pond. We used dip nets and bottle traps to gather our samples. We expected to find more invertebrates near the vegetation, but had some trouble gathering our target samples when our sample location became flooded and one bottle trap failed to function.


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