Secondary Production

  • William M. LewisJr.
Conference paper


For calanoid and cyclopoid copepods and for Chaoborus the production of each developmental stage was computed separately as follows (Edmondson, 1971; Winberg, 1971):
$$ {P_{i}} = \frac{{{N_{i}}\Delta {w_{i}}}}{{{D_{i}}}} $$
where P i is the production of stage i, N i is the numerical abundance of stage i, Δw i is the change in weight over stage i, and D i is the development time for stage i. The values of D i were obtained from the cohort analysis, which has already been discussed. The values of P i were summed as required to obtain the production of groups of developmental stages or of the entire population.


Generation Time Secondary Production Cyclopoid Copepod Naupliar Stage Night Sample 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag New York Inc. 1979

Authors and Affiliations

  • William M. LewisJr.
    • 1
  1. 1.Department of Environmental, Population and Organismic BiologyUniversity of ColoradoBoulderUSA

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