Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Spatial patterns of distribution and relative abundance of coastal shark species in the Galapagos Marine Reserve

    Access Status
    Fulltext not available
    Authors
    Acuña-Marrero, D.
    Smith, A.
    Salinas-De-León, P.
    Harvey, Euan
    Pawley, M.
    Anderson, M.
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Acuña-Marrero, D. and Smith, A. and Salinas-De-León, P. and Harvey, E. and Pawley, M. and Anderson, M. 2018. Spatial patterns of distribution and relative abundance of coastal shark species in the Galapagos Marine Reserve. Marine Ecology Progress Series. 593: pp. 73-95.
    Source Title
    Marine Ecology Progress Series
    DOI
    10.3354/meps12505
    ISSN
    0171-8630
    School
    School of Molecular and Life Sciences (MLS)
    URI
    http://hdl.handle.net/20.500.11937/67072
    Collection
    • Curtin Research Publications
    Abstract

    A better understanding of the patterns of distribution and abundance of sharks and their potential biological and environmental drivers is essential to develop and evaluate spatial management plans for conservation and fisheries. Benthic and pelagic baited remote underwater stereo-video systems (stereo-BRUVs) were used to describe spatial and temporal patterns in coastal shark assemblages in the Galapagos Marine Reserve (GMR). From 629 stereo-BRUV deployments, 877 sharks from 10 species were recorded. Shark assemblages displayed high spatial variation, likely in response to the diversity of habitats occurring in the GMR. The relative importance of environmental and biological drivers differed among shark species according to their mobility. Some species were widespread across the Galapagos Archipelago (GA) but oc - curred primarily only as either juveniles (Carcharhinus galapagensis) or adults (C. limbatus and Triaenodon obesus), while others were more spatially restricted and associated with geographical features (Sphyrna lewini and Galeocerdo cuvier) or specific habitats (Triakidae spp. and Hetero - dontus quoyi). The highest diversity of sharks was found in the Centre South bioregion of the GA, in areas with heterogeneous habitat and high overall fish diversity (islets and Floreana Island), while the greatest total abundance of sharks was recorded at the northern oceanic islands of Darwin and Wolf. Overall, the GMR harbours a unique coastal shark community that varies in composition across the GA. It is dominated by large semipelagic species but is also characterised by the presence of less mobile benthic species that are not found near other oceanic islands in the Eastern Tropical Pacific region.

    Related items

    Showing items related by title, author, creator and subject.

    • Decadal trends in shark catches and effort from the New South Wales, Australia, Shark Meshing Program 1950-2010
      Reid, D.; Robbins, William; Peddemors, V. (2011)
      The New South Wales (NSW) government has operated a program of netting beaches for the protection of swimmers and surfers against shark attack since 1937 in Sydney, and since 1949 in Newcastle and Wollongong. The scope ...
    • Oceanic dispersal in a sedentary reef shark (Triaenodon obesus): Genetic evidence for extensive connectivity without a pelagic larval stage
      Whitney, N.; Robbins, William; Schultz, J.; Bowen, B.; Holland, K. (2012)
      Aim Most reef fishes are site-attached, but can maintain a broad distribution through their highly dispersive larval stage. The whitetip reef shark (Triaenodon obesus) is site-attached, yet maintains the largest Indo-Pacific ...
    • Calibration of pelagic stereo-BRUVs and scientific longline surveys for sampling sharks
      Santana-Garcon, J.; Braccini, M.; Langlois, T.; Newman, Stephen; McAuley, R.; Harvey, Euan (2014)
      Our understanding of the ecology of sharks and other highly mobile marine species often relies on fishery-dependent data or extractive fishery-independent techniques that can result in catchability and size-selectivity ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.