U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

An ecological model for Lake Ontario model formulation, calibration, and preliminary evaluation



Select the Download button to view the document
Please click the download button to view the document.

Details

  • Corporate Authors:
    Great Lakes Environmental Research Laboratory
  • NOAA Program & Office:
  • Description:
    A simulation model describing the dynamics of four types of phytoplankton, six types of zooplankton, detritus, organic nitrogen, ammonia, nitrate, available phosphorus, the carbonate system, and benthic invertebrates has been developed for the Lake Ontario ecosystem. The equations are described. The ecological model is driven by a physical model designed to predict average temperature, segment thicknesses, and vertical diffusion coefficients for the three-layer model. v In addition, an orginal formulation for calculating sedimentation rates is shown to accurately predict community settling rates. The simulated processes and predicted variables follow ecologically realistic patterns and compare favorably to measured parameters in Lake Ontario. Sensitivity analyses revealed that modeled phosphorus was quite responsive to changes in diffusion, sedimentation was critical to predicting benthic dynamics, and self-shading by phytoplankton was not critical due to the relationship between light limitation and phosphorus depletion. Changes in temperature resulted in predicted shifts in the peaks of the phytoplankton and zooplankton, and the sensitivity of the model to fish predation indicated the need for better descriptions of fish dynamics.
  • Keywords:
  • Series:
    NOAA technical report ERL GLERL   371-12
  • Document Type:
    Technical Report
  • Place as Subject:
    Ontario, Lake (N.Y. and Ont.)
  • License:
  • Rights Information:
    CC0 Public Domain
  • Compliance:
    Library
  • Main Document Checksum:
    urn:sha256:2b079aab02c987ec9db80f68885717aa03a59a701665ffb9a62b150fdd80de4a
  • Download URL:
  • File Type:
    Filetype[PDF - 58.63 MB ]
PREVIOUS
ON THIS PAGE
Details
The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP