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Benthic foraminiferal biogeography: controls on global distribution patterns in deep-water settings
Gooday, A.J.; Jorissen, F.J. (2012). Benthic foraminiferal biogeography: controls on global distribution patterns in deep-water settings. Ann. Rev. Mar. Sci. 4: 237-262. hdl.handle.net/10.1146/annurev-marine-120709-142737
In: Annual Review of Marine Science. Annual Reviews: Palo Alto, Calif.. ISSN 1941-1405, more
Peer reviewed article  

Available in Authors 

Keyword
    Marine
Author keywords
    protist, abyssal, bathyal, biodiversity, endemic, cosmopolitan

Authors  Top 
  • Gooday, A.J., more
  • Jorissen, F.J.

Abstract
    Benthic foraminifera, shell-bearing protists, are familiar from geological studies. Although many species are well known, undescribed single-chambered forms are common in the deep sea. Coastal and sublittoral species often have restricted distributions, but wide ranges are more frequent among deep-water species, particularly at abyssal depths. This probably reflects the transport of tiny propagules by currents across ocean basins that present few insurmountable barriers to dispersal, combined with slow rates of evolution. Undersampling of the vast deep-sea habitat, however, makes it very difficult to establish the ranges of less common foraminiferal species, and endemism may be more prevalent than currently realized. On continental slopes, some species have restricted distributions, but wide-ranging bathyal species that exhibit considerable morphological variation are more common. This may be linked to the greater heterogeneity of continental slopes compared with oceans basins. Improved knowledge of deep-sea foraminiferal biogeography requires sound morphology-based taxonomy combined with molecular genetic studies.

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