Conflicting perceptions on the life-history covariates of density-dependent recruitment based on information-generating equations
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Conflicting perceptions on the life-history covariates of density-dependent recruitment based on information-generating equations



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Details:

  • Journal Title:
    ICES Journal of Marine Science
  • Personal Author:
    Munyandorero, Joseph ORCID ICON IMG
  • NOAA Program & Office:
    NMFS (National Marine Fisheries Service)
  • Description:
    The stock–recruit steepness (h) and compensation ratio are alternative measures of the degree of density-dependent recruitment. They relate similarly to the longevity-related life-history traits (LRLHTs), but studies using information-generating equations and describing such relationships convey three conflicting perceptions. Perception 1 is that h and the compensation ratio decrease as longevity increases and are highest in short-lived, high-productivity species. This perception, usually believed to be inherent in the definition of steepness, is not substantiated by the very definition and, hence, theoretically is wrong. Perception 2 is that h and the compensation ratio increase with longevity and are highest in long-lived, low-productivity species; this perception may occur when the relationships between natural mortality and other LRLHTs are strong, and is most likely correct. Perception 3 is that h and the compensation ratio are independent of LRLHTs; this perception may be caused by the lack of the relationships between natural mortality and other LRLHTs, and is a distortion of perception 2.
  • Keywords:
  • Source:
    ICES Journal of Marine Science, 77(3), 878-889
  • DOI:
  • ISSN:
    1054-3139;1095-9289;
  • Format:
    PDF
  • Publisher:
    Oxford University Press (OUP)
  • Document Type:
    Journal Article
  • Funding:
    Grant no. NA17NMF4740329
  • License:
  • Rights Information:
    CC0 Public Domain
  • Compliance:
    Library
  • Main Document Checksum:
  • Download URL:
  • File Type:
    Filetype[PDF-605.53 KB]

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