Decision analysis frameworks can be employed to deconstruct a complex problem or process into smaller components that can be readily understood and critically analyzed. These components can then be recombined to create a model of the process or problem which integrates qualitative and quantitative information from stakeholders and clarifies and communicates the decision framework to all parties. We apply simple decision frameworks to assessing the relative benefits and costs associated with conservation efforts of two species of endangered marine mammals. The first cases examines the utility of using satellite linked time depth recorders (SDRs) to study Maui’s dolphins (Cephalorhynchus hectori maui) in New Zealand, the second examines the utility of using acoustic deterrent devices to mitigate fisheries mortality of vaquita (Phocoena sinus) in Mexico. In both cases, risk-averse decision trees informed with data on the status of the species and techniques to be employed suggest that using some invasive methods and novel technologies with small populations of endangered marine mammals may not contribute significantly to conservation efforts. When applied to situations with more numerous populations, these methods are more likely to support conservation efforts. We conclude that decision framework analyses are useful tools for resolving contentious research and management issues associated with conserving small populations of marine mammal species at risk.
Decision analysis frameworks can be employed to deconstruct a complex problem or process into smaller components that can be readily understood and critically analyzed. These components can then be recombined to create a model of the process or problem which integrates qualitative and quantitative information from stakeholders and clarifies and communicates the decision framework to all parties. We apply simple decision frameworks to assessing the relative benefits and costs associated with conservation efforts of two species of endangered marine mammals. The first cases examines the utility of using satellite linked time depth recorders (SDRs) to study Maui’s dolphins (Cephalorhynchus hectori maui) in New Zealand, the second examines the utility of using acoustic deterrent devices to mitigate fisheries mortality of vaquita (Phocoena sinus) in Mexico. In both cases, risk-averse decision trees informed with data on the status of the species and techniques to be employed suggest that using some invasive methods and novel technologies with small populations of endangered marine mammals may not contribute significantly to conservation efforts. When applied to situations with more numerous populations, these methods are more likely to support conservation efforts. We conclude that decision framework analyses are useful tools for resolving contentious research and management issues associated with conserving small populations of marine mammal species at risk.
