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Exceptional responders in conservation
Authors:Gerald Post  Jonas Geldmann
Institution:1. The Veterinary Cancer Center, Norwalk, CT 06850, U.S.A.;2. Conservation Science Group, Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, U.K.
Abstract:Conservation operates within complex systems with incomplete knowledge of the system and the interventions utilized. This frequently results in the inability to find generally applicable methods to alleviate threats to Earth's vanishing wildlife. One approach used in medicine and the social sciences has been to develop a deeper understanding of positive outliers. Where such outliers share similar characteristics, they may be considered exceptional responders. We devised a 4‐step framework for identifying exceptional responders in conservation: identification of the study system, identification of the response structure, identification of the threshold for exceptionalism, and identification of commonalities among outliers. Evaluation of exceptional responders provides additional information that is often ignored in randomized controlled trials and before–after control‐intervention experiments. Interrogating the contextual factors that contribute to an exceptional outcome allow exceptional responders to become valuable pieces of information leading to unexpected discoveries and novel hypotheses.
Keywords:BACI  evidence‐based conservation  exceptional responder  impact assessment  outcome  positive deviance  positive outlier  BACI  conservació  n basada en evidencias  desviació  n positiva  evaluació  n de impactos  respondedor excepcional  valor atí  pico positivo              (BACI)                                                              
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