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Case Study: Analysis of scale on boosted regression tree fish habitat models

Recent modeling efforts at the regional and FHP scale have indicated that smaller-scale models are likely necessary to pinpoint localized stressors. From discussions with experienced modelers and fishery professionals, HUC8 watersheds were agreed upon as the most appropriate scale. This report summarizes a case study that demonstrates the effect of scale on the assignment of stressors from predictive BRT models. Specifically, we modeled the same response at three different scales and for two separate HUC8 watersheds

Modification Date: Thu Jun 13 10:32:56 2013

Contributors: J. Clingerman, T. Petty, and F. Boettner

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