A comparative-study of the ecosystem dynamics of four fjords

Research output: Contribution to journalArticle

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Abstract

In this paper we develop our previously published strategic simulation model of a sea-loch into a quantitatively testable form. This formulation includes the effects of phytoplankton self-shading, aggregation by zooplankton to areas of high phytoplankton density, and a representation of temperature-dependent energy allocation in zooplankton. We confront the model with datasets from four contrasting Scottish and Irish sea-lochs. After further extension to incorporate variations in the vertical distribution of phytoplankton, driven by vertical mixing and grazing pressure, the model provides a quantitatively acceptable fit to all four datasets. We illustrate the ''top-down'' nature of the control operating in these systems by formulating a three-state variable model, describing only the biotic components of the system. This simplified model produces the same quality of fit to the appropriate data as its progenitor.
LanguageEnglish
Pages318-343
Number of pages25
JournalLimnology and Oceanography
Volume39
Issue number2
Publication statusPublished - Mar 1994

Fingerprint

ecosystem dynamics
fjord
comparative study
ecosystems
phytoplankton
zooplankton
lakes
Irish Sea
grazing pressure
vertical mixing
simulation models
shade
shading
grazing
vertical distribution
energy
temperature
simulation
sea

Keywords

  • enclosed water column
  • coastal waters
  • Killary Harbor
  • surface waters
  • phytoplankton
  • sea
  • hydrography
  • Atlantic
  • Ireland

Cite this

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A comparative-study of the ecosystem dynamics of four fjords. / Ross, A.H.; Gurney, W.S.C.; Heath, M.R.

In: Limnology and Oceanography , Vol. 39, No. 2, 03.1994, p. 318-343.

Research output: Contribution to journalArticle

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