rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Three-dimensional photogrammetry as a tool for assessing morphometrics and estimating body mass of Steller sea lions
  title info:
    title: 3D photogrammetry as a tool for assessing morphometrics and estimating body mass of Steller sea lions
  name:
    name part: Waite, Jason Neil.
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 2000
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    form: remote
    extent: x, 59 leaves : illustrations ; 28 cm.
  abstract: A technique was developed to indirectly assess morphometrics and to estimate body mass of Steller sea lions (Eumetopias jubatus using three- dimensional (3D) photogrammetry. 3D computer wireframes of thirty-five Steller sea lions of various age classes were generated from multiple time-synchronous digital photos. Overall average estimates of standard length and axillary girth were within ±2.8% and ±4.2% of physically measured dimensions, respectively. Average estimates of standard length and axillary girth from wireframes based on ideal body postures were within ±1.7% and ±3. 1% of physically measured dimensions, respectively. These measurements were used to estimate body mass by applying previously existing regression equations. Regressions of physically measured mass on photogrammetrically estimated body volume yielded a predictive model. Body mass estimates using this model were on average within 10.5% (with a 95% confidence interval of ±2.35%) of the physically measured mass. The use of 3D photogrammetry decreases many of the problems associated with camera and body position encountered with two-dimensional photogrammetric techniques. This technique can be used to estimate the body mass of free-ranging, active sea lions, eliminating the need for sedation, heavy weighing equipment, and animal disturbance.
  note: by Jason Neil Waite.
  note: "Major subject: Wildlife and Fisheries Sciences".
  note: Vita.
  note: Also available online.
  note: Issued also on microfiche from Lange Micrographics.
  note: M.S. Texas A&M University 2000.
  note: Includes bibliographical references (leaves 54-55).
  subject:
    topic: Major wildlife and fisheries sciences
  identifier: https://hdl.handle.net/1969.1/ETD-TAMU-2000-THESIS-W235
  related item:
    location:
      url: https://hdl.handle.net/1969.1/ETD-TAMU-2000-THESIS-W235
  record info:
    record content source: TXA
    record creation date: 010726
    record change date: 20220103114510.0
    record identifier: in00001637335