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: Foraging Ecology of Lactating Steller Sea Lions (Eumetopias jubatus) at Lovushki Island, Russia
  name:
    name part: Olivier, Paul
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: Davis, Randall
    role:
      role term: thesis advisor.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2015
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: A key objective of the National Marine Fisheries Service recovery plan for Steller sea lions (SSL - Eumetopias jubatus) is to protect critical habitats. Doing so relies in part on knowledge of SSL ecology based on time-depth data, at-sea dive locations and post-trip dietary analyses. I used data from animal-borne video and data recorders (VDRs) attached to lactating SSL at Lovushki Island, Russia to improve our knowledge by: 1) classifying dives based on three-dimensional swim paths and foraging success, 2) quantifying rates at which prey were encountered and consumed, and 3) testing whether a giving up rule, shown to be applicable to phocids, could similarly benefit SSL. I identified five dive types: shallow and deep foraging dives, opportunistic foraging dives, a group of unique dives with no consistent behaviors, and non-foraging dives. I found that discrimination between foraging and non-foraging dives was possible with time-depth data alone, but relied on the assumption that time spent swimming horizontally between the descent and ascent represented swimming at the seabed. I also concluded that SSL at Lovushki were consuming enough prey to satisfy their estimated nutritional requirements. To determine if lactating SSL at Lovushki Island could improve foraging success by incorporating a giving up rule into their foraging strategy I: 1) identified how dive duration varied according to foraging success and 2) constructed a simulation model to simulate the foraging behaviors and habitats of SSL. SSL did not appear to employ a giving up rule when foraging. This was supported by simulation results which showed that using a giving up rule may not allow SSL to markedly improve foraging success. My research provided the first descriptions of the submerged foraging behaviors of SSL derived from three-dimensional swim paths and video recorded observations of foraging success. Results improved our knowledge of how SSL utilize the marine resources available to them and demo…
  note: by Paul Olivier.
  note: "Major Subject: Marine Biology"
  note: Includes vita.
  note: Doctor of Philosophy Texas A & M University 2015 http://hdl.handle.net/1969.1/155177
  note: Includes bibliographical references.
  note: Text (Dissertation)
  subject:
    topic: Major Marine Biology
  subject:
    topic: Foraging
  subject:
    topic: Ecology
  subject:
    topic: Steller sea lion
  identifier: http://hdl.handle.net/1969.1/155177
  record info:
    record content source: TXA
    record creation date: 160308
    record change date: 20170928112501.0
    record identifier: in00003610385
    language of cataloging:
      language term: eng