Butterflies Write-up - Joel Avery 9509759117 Corridors...

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Joel Avery 9509759117 January 29, 2007 Corridors, Stepping Stones and Butterflies Write-up The three experimental environments all showed some improvement in the butterfly population. However, this is no surprise because any amount of prairie land added can only improve the butterfly population, not decrease it. The butterflies seemed to respond best to a single large prairie land mass rather than a connected, thin land mass. Because of this, the experimental patch expansion was more successful than creating corridors or stepping stones. The combined population in all four trials for stepping stones was 69 butterflies, 67 butterflies for corridors, and 98 butterflies using the patch expansion experiment. Clearly, the patch expansion experiment worked best. Adding stepping stones barely increased the original population because the butterflies seemed to die off trying to make it across. Butterflies seemed to not understand the concept of the stepping stones as much either, as most of them just died off on their original land mass.
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