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. 2009 Jan 30;8:7. doi: 10.1186/1476-072X-8-7

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Copyright © 2009 Levine et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Spatial results from 'jackknife procedure' to determine relative significance of various ecological parameters. Figure 1A shows the comprehensive map made with all parameters – each jackknife map was compared for similarity via statistical analysis with this comprehensive map. Figures 1B-E show jackknife maps created each with the exclusion of one parameter. Excluded parameters shown are: (B) Precipitation, (C) Flow Direction, (D) Land Cover, and (E) Frost Days. These four maps were selected for visualization based on statistical results of the jackknife test shown in table 1 [2].