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: Seasonal distribution of freshwater dolphins in Tipishca Del Samiria, Peru
  name:
    name part: Zuniga, Elizabeth Luisa.
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 1999
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    form: remote
    extent: xiii, 127 leaves : illustrations, maps ; 28 cm.
  abstract: Tipishca del Samiria is an oxbow lake of the blackwater Samiria River system found within the Pacaya-Samiria National Reserve in northeastern Peru. The entire system experiences seasonal inundation and is influenced by the water level of the Marahon River, which joins the Ucayali River to form the Amazon. Botos (Inia geoffrensis) and tucuxis (Sotalia fluviatilis) were studied from September 1997 through August 1998 to determine the seasonal (water level) effects on their distribution and abundance in Tipishca del Samiria. Mean abundance of each species did not vary by water level, and a mean abundance of 25.7 ([] S.E. 1.82, n=78) bolos and 19.9 ([] S.E. 1.65, n=78) tucuxis was calculated for the lake during the study period. These abundance data were equal to or smaller than those obtained from other studies in this area. Overall, botos were found in groups of one (n=348) and two (n=195) with a mean group size of 1.9 ([] S.E. 0.05, n=684). Tucuxis were found in groups of one (n=131) and two (n=134) with a mean group size of 2.5 ([] S.E. 0.09, n=400). Distribution of bolos varied within the lake during high and medium-falling water, and the distribution of tucuxis varied during medium-rising and medium-falling water. A total of 49 botos and 46 tucuxis were photo-identified. Of those, 13 botos and 14 tucuxis were resighted on at least one occasion. Jolly-saber population estimates of 31.9 ([] S.E. 10.62) botos and 37.9 ([] S.E. 5.06) tucuxis were calculated for Tipishca del Samiria. Water quality measurements varied within the lake. The greatest mean conductivity and transparency occurred during medium-falling water, while the pH remained constant. All values, including particulate phosphorus, were greater than literature values for similar water types in Brazil. Forty-two species of fish were identified from casual observation of fish catches in Tipishca del Samiria. Seven of these species are know from the literature to have been found in stomach contents of botos a…
  note: by Elizabeth Luisa Zuniga.
  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 1999.
  note: Includes bibliographical references (leaves 119-126).
  subject:
    topic: Major wildlife and fisheries sciences
  identifier: https://hdl.handle.net/1969.1/ETD-TAMU-1999-THESIS-Z86
  related item:
    location:
      url: https://hdl.handle.net/1969.1/ETD-TAMU-1999-THESIS-Z86
  record info:
    record content source: TXA
    record creation date: 000405
    record change date: 20220103134441.0
    record identifier: in00001527250