Modelling nutrient-periphyton dynamics in streams: the importance of transient storage zones

D. L. DeAngelis, M. Loreau, D. Neergaard, P. J. Mulholland, E. R. Marzolf

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

The dynamics of a nutrient-limited periphyton community in a segment of stream was modeled. The stream segment was assumed to consist of two zones, free-flowing water and a boundary zone of zero water flow, which acted as a transient storage zone for nutrients. Studies with a biologically unreactive tracer solute (sodium chloride) were used to obtain parameters for diffusion of solute into the transient storage zone. Two simple alternative functional responses representing nutrient-limited periphyton growth were formulated, one with only nutrient limitation on periphyton growth and one that additionally included density-dependent limitation of periphyton growth. Attempts to fit the two alternative functional responses for periphyton growth and to predict nutrient levels in the transient storage zone showed that the two alternatives had very different implications for the steady state and dynamics of the storage zone. Empirical studies of periphyton biomass and nutrient turnover give support for the second alternative function. The model results suggests some additional experiments that can be performed to test the two alternatives.

Original languageEnglish
Pages (from-to)149-160
Number of pages12
JournalEcological Modelling
Volume80
Issue number2-3
DOIs
StatePublished - Jan 1 1995

Fingerprint

periphyton
nutrient
nutrients
modeling
functional response
solutes
solute
nutrient limitation
sodium chloride
water flow
tracer techniques
turnover
tracer
biomass
experiment
water
testing

Keywords

  • Freshwater ecosystems
  • Nutrients
  • Periphyton

ASJC Scopus subject areas

  • Ecological Modeling
  • Ecology, Evolution, Behavior and Systematics
  • Ecology

Cite this

DeAngelis, D. L., Loreau, M., Neergaard, D., Mulholland, P. J., & Marzolf, E. R. (1995). Modelling nutrient-periphyton dynamics in streams: the importance of transient storage zones. Ecological Modelling, 80(2-3), 149-160. https://doi.org/10.1016/0304-3800(94)00066-Q

Modelling nutrient-periphyton dynamics in streams : the importance of transient storage zones. / DeAngelis, D. L.; Loreau, M.; Neergaard, D.; Mulholland, P. J.; Marzolf, E. R.

In: Ecological Modelling, Vol. 80, No. 2-3, 01.01.1995, p. 149-160.

Research output: Contribution to journalArticle

DeAngelis, DL, Loreau, M, Neergaard, D, Mulholland, PJ & Marzolf, ER 1995, 'Modelling nutrient-periphyton dynamics in streams: the importance of transient storage zones', Ecological Modelling, vol. 80, no. 2-3, pp. 149-160. https://doi.org/10.1016/0304-3800(94)00066-Q
DeAngelis, D. L. ; Loreau, M. ; Neergaard, D. ; Mulholland, P. J. ; Marzolf, E. R. / Modelling nutrient-periphyton dynamics in streams : the importance of transient storage zones. In: Ecological Modelling. 1995 ; Vol. 80, No. 2-3. pp. 149-160.
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