Measuring Availability Bias in Florida Manatee (Trichechus manatus latirostris) Aerial Surveys Using Controlled Experiments and a Life‐Sized Manatee Replica

Details

• Journal Title:
  Marine Mammal Science
• Personal Author:
  Edwards, Holly H. ; Koslovsky, Stacie M. ; Reinert, Thomas R.
• NOAA Program & Office:
  NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center)
• Description:
  For decades, scientists have used aerial surveys over large spatial scales to count marine mammals, assess abundance and trends over time, compare population estimates between locations and years, and gauge if management objectives are being met (Eberhardt et al. 1979; Pollock et al. 2006; Edwards et al. 2007; Nichols 2014; Hammond et al. 2021). When data are collected appropriately, abundance estimates derived from aerial survey data can provide useful information about a population's status. However, estimating abundance from aerial surveys can be challenging. For example, detecting marine mammals that are present during a survey can be difficult, and even when methods are standardized such as altitude, aircraft, observer experience, minimum weather conditions, and so on, detection of animals often varies within or between surveys, making it problematic to interpret or compare results.
• Source:
  Marine Mammal Science, 42(2)
• DOI:
  https://doi.org/10.1111/mms.70141
• ISSN:
  0824-0469 ; 1748-7692
• Format:
  PDF
• Publisher:
  Wiley
• Document Type:
  Journal Article
• Rights Information:
  Other
• Compliance:
  Submitted
• Main Document Checksum:
  urn:sha-512:66e942ef53381ef1983345edad64ff8116e210653c5b94e5f3341a9a7d7a41d74fe862d5a1a7edf49f32fcef04aee63d1dc8420d8bbd2d1c54288433c0485674
• Download URL:
  https://repository.library.noaa.gov/view/noaa/72721/noaa_72721_DS1.pdf
• File Type:
  [PDF - 2.57 MB ]