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Dependent double-observer method reduces false-positive errors in auditory avian survey data.
Strickfaden, Kaitlyn M; Fagre, Danielle A; Golding, Jessie D; Harrington, Alan H; Reintsma, Kaitlyn M; Tack, Jason D; Dreitz, Victoria J.
Afiliación
  • Strickfaden KM; Avian Science Center and Wildlife Biology Program, Department of Ecosystem and Conservation Sciences, W.A. Franke College of Forestry and Conservation, University of Montana, 32 Campus Drive, Missoula, Montana, 59812, USA.
  • Fagre DA; Avian Science Center and Wildlife Biology Program, Department of Ecosystem and Conservation Sciences, W.A. Franke College of Forestry and Conservation, University of Montana, 32 Campus Drive, Missoula, Montana, 59812, USA.
  • Golding JD; Avian Science Center and Wildlife Biology Program, Department of Ecosystem and Conservation Sciences, W.A. Franke College of Forestry and Conservation, University of Montana, 32 Campus Drive, Missoula, Montana, 59812, USA.
  • Harrington AH; National Genomics Center for Wildlife and Fish Conservation, Rocky Mountain Research Station, U.S. Forest Service, 800 E Beckwith Avenue, Missoula, Montana, 59801, USA.
  • Reintsma KM; Avian Science Center and Wildlife Biology Program, Department of Ecosystem and Conservation Sciences, W.A. Franke College of Forestry and Conservation, University of Montana, 32 Campus Drive, Missoula, Montana, 59812, USA.
  • Tack JD; Animal and Rangeland Sciences, Oregon State University, Corvallis, Oregon, 97331, USA.
  • Dreitz VJ; Avian Science Center and Wildlife Biology Program, Department of Ecosystem and Conservation Sciences, W.A. Franke College of Forestry and Conservation, University of Montana, 32 Campus Drive, Missoula, Montana, 59812, USA.
Ecol Appl ; 30(2): e02026, 2020 03.
Article en En | MEDLINE | ID: mdl-31630467
Bias introduced by detection errors is a well-documented issue for abundance and occupancy estimates of wildlife. Detection errors bias estimates of detection and abundance or occupancy in positive and negative directions, which can produce misleading results. There have been considerable design- and model-based methods to address false-negative errors, or missed detections. However, false-positive errors, or detections of individuals that are absent but counted as present because of misidentifications or double counts, are often assumed to not occur in ecological studies. The dependent double-observer survey method is a design-based approach speculated to reduce false positives because observations have the ability to be confirmed by two observers. However, whether this method reduces false positives compared to single-observer methods has not been empirically tested. We used prairie songbirds as a model system to test if a dependent double-observer method reduced false positives compared to a single-observer method. We used vocalizations of ten species to create auditory simulations and used naive and expert observers to survey these simulations using single-observer and dependent double-observer methods. False-positive rates were significantly lower using the dependent double-observer survey method in both observer groups. Expert observers reported a 3.2% false-positive rate in dependent double-observer surveys and a 9.5% false-positive rate in single-observer surveys, while naive observers reported a 39.1% false-positive rate in dependent double-observer surveys and a 49.1% false-positive rate in single-observer surveys. Misidentification errors arose in all survey scenarios and almost all species combinations. However, expert observers using the dependent double-observer method performed significantly better than other survey scenarios. Given the use of double-observer methods and the accumulating evidence that false positives occur in many survey methods across different taxa, this study is an important step forward in acknowledging and addressing false positives.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Pájaros Cantores Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: Ecol Appl Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Pájaros Cantores Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: Ecol Appl Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos