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: Distributional ecology and conservation status of river dolphins (Inia geoffrensis and Sotalia fluviatilis) in portions of the Peruvian Amazon
  name:
    name part: Leatherwood, Stephen.
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 1996
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xvii, 233 leaves : illustrations, maps ; 28 cm.
  abstract: River dolphins (Inia geofftensis and Sotaliafluviatilis) were studied in the mainstem of the Amazon and Marai!6n rivers, from Iquitos, Peru, to approximately 230 km upriver and including tributaries in both the Peruvian and Ecuadorian drainages. A single stretch (142 km) of the relatively pristine Samiria River, within the Pacaya-Samiria National Reserve, was selected for in-depth study. Data from sightings made during eleven expeditions between March 1991 and August 1993 were analyzed in combination with data on survey effort and environmental features. In addition to applying standard statistical tests of significance, a Geographic Information System (GIS) was used for exploring relations between dolphin occurrence and fine-scale habitat characteristics. Three principal lines of enquiry were pursued: (1) to describe the overall distribution and relative abundance of the two dolphin species within the study area, (2) to estimate the absolute abundance of river dolphins in the core study area, and (3) to correlate dolphin distribution and movement with the presence or absence of confluences, sand banks, and sharp turns in the main river channel. Encounter rates (animals observed/km of survey effort) in the large white-water rivers were broadly similar to rates recorded in other sections of the Amazon and Orinoco rivers. In all areas, Sotalia consistently occurred in larger groups than Inia. About 700 dolphins were estimated to inhabit the Samiria River system during fegh Water (roughly half Sotalia:half Inia). Both species strongly prefeffed confluences and other habitats with complex water flow, although there were seasonal (water level) differences in the strength of that preference. Depth appears to be important in attracting dolphins.
  note: by James Stephen Leatherwood.
  note: Vita.
  note: "Major Subject: Wildlife and Fisheries Sciences".
  note: Issued also on microfiche from University Microfilms Inc.
  note: Includes bibliographical references.
  note: Ph. D. Texas A&M University 1996.
  subject:
    topic: Major wildlife and fisheries sciences
  identifier: 96-34793 UMI
  identifier: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  record info:
    record content source: TXA
    record creation date: 970318
    record change date: 20190325093245.0
    record identifier: in00001340080