Marine Biology

, Volume 113, Issue 1, pp 171–174

Benthic recruitment and manganese crust formation on seamounts

  • P. A. Verlaan
Article

Abstract

Hydrogenous ferromanganese crusts are a common feature of oceanic seamounts, forming slowly (predominantly at 1 to 5 mm/m.yr through precipitation from seawater, by a process that is poorly understood yet producing crusts of thicknesses up to 240 mm. It remains unexplained why crusts are not overwhelmed by more rapid biological processes occurring simultaneously. The present study of recruitment by sessile invertebrates to ferromanganese crusts and basalt on Cross Seamount (18°40′N; 158°17′W), North Pacific Ocean, from July 1988 to February 1990 supports the view that hydrogenesis alone may not adequately account for crust formation. Here, mediation of crust growth by benthic Foraminifera and inhibition of ferromanganese oxide precipitation by high abundances of sessile macrofauna are suggested as two interactive biological processes relevant to crust accretion. Larval supply is an important factor in the distribution of sessile macrofauna on oceanic seamounts.

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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • P. A. Verlaan
    • 1
  1. 1.The Rockefeller FoundationNew YorkUSA

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