Is2's ability to perform well In such a high Nickel concentration was surprising and could be Indicative that nickel contamination is more common than was originally believed In Lake Superior. Is35's high performance was expected and indicative of the contamination found In Lake Acton. Is37's performance fell within expected ranges based upon the contamination seen In Lake Erie.

Is2 did not show heterotrophs not Improving performance, so this experiment will not be continued further. Is35 and Is37 did show Improved tolerance with heterotrophs, so these experiments will be repeated with more focus on the range where they saw the most Impact. 

Is37's heterotroph co-culture (Fe27) contains characterized heterotrophs, so there Is potential for future research Into the specific heterotrops behind these results.