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   Lichens, Tardigrades, and SO2Creating the Context Research Focus   
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Research Focus Question

1. Can we determine the lichen coverage on trees at our study site?

2. Can we determine the density of tardigrades living on the lichen in our study site?

3. Can we determine the diversity of tardigrades living on the lichen in our study site?

These research focus questions are intended to give directions to your study of atmospheric levels of sulphur dioxide and its' impact on lichen coverage. Tardigrades live on and eat the lichens, so we are also interested to see if the effect of SO2 on lichens also moves down the food chain. At this point we are trying to develop a deep understanding of these relationships, if relationships exist. The role of SO2 on the lichens and the living community dependent on them, are important issues.

Working to answer the focus questions, combined with the background information provided and information that you develop on your own, you should have a rich understanding of atmospheric sulphur dioxide, lichens, and tardigrades. It is from this understanding that additional questions will emerge and drive the research.

With these focus questions guiding your work, proceed to the background information.

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