Species as conservation umbrellas: A case study with lesser prairie-chicken (Tympanuchus pallidicinctus) in the southern Great Plains of North America

Abstract

Conservation efforts often focus on a single species, but this approach is inefficient for agencies dealing with many declining species at risk of extinction. Leveraging already-funded management for additional species can help stretch limited resources to conserve more biodiversity. However, evaluation of the efficacy of such an umbrella approach is typically lacking, does not explicitly consider outcomes of management treatments, or only evaluates one or a few species. We developed a method to evaluate the ability of management for the lesser prairie-chicken (Tympanuchus pallidicinctus) to offer an umbrella of protection for non-target species at risk of decline. To accomplish this, we predicted the conservation outcomes of lesser prairie-chicken management for overlapping at-risk species and created an index of conservation benefit to evaluate the effectiveness of the lesser prairie-chicken as an umbrella species for conservation. We conducted a literature review for 77 at-risk species that overlap in range with the lesser prairie-chicken to determine the effects (benefit, cost, or neutral) of the primary conservation actions taken to manage lesser prairie-chicken habitat. We determined that 84 % of the species were expected to receive a net conservation benefit from management for lesser prairie-chicken, 8 % would incur a net cost, and 8 % would have a net balance of costs and benefits. These results suggest that the lesser prairie-chicken functions as an umbrella of protection for other grassland species, providing a net conservation benefit. Our index-based approach serves as a model for evaluating the efficacy of proposed surrogate species on a community of organisms.