Ecosystem engineers (i.e., species that create, modify, or maintain habitats; Jones et al., 1994, 1997) can be valuable tools for ecosystem management, especially landform engineers (i.e., species that modify sediment and landform dynamics; Corenblit et al., 2011), which are often deployed to create and restore habitat. Yet use of landform engineers has resulted in a mixed record-applications have frequently yielded conditions that depart from natural precedent or that otherwise result in unexpected consequences (e.g., Strong & Ayres, 2013). It is possible that unanticipated outcomes occur because applications do not adequately account for the influence of a species' 'extended phenotype' (sensu Whitham