Implications of resting eggs of zooplankton for the paradox of enrichment

Takefumi Nakazawa, Masataka Kuwamura, Norio Yamamura

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this study, we numerically investigated to what extent introducing resting-egg dynamics would stabilize simple Daphnia-algae consumer-resource models. In the models, the density of viable resting eggs was explicitly expressed, and we assumed that zooplankton produced resting eggs seasonally or in response to food deficiency and that resting eggs hatched seasonally. The models predicted that, although the paradox of enrichment was not completely resolved (i. e., the system was destabilized by eutrophication), we found the following conditions under which the stabilizing effects of resting eggs would be significantly large: (1) resting eggs are produced seasonally (rather than in response to food deficiency), (2) the annual average allocation ratio to resting eggs is large, and (3) the annual average hatching rate of resting eggs is low. The results suggest that resting-egg dynamics can significantly reduce the paradox of enrichment within the biologically meaningful parameter space and contribute to the stability of plankton community dynamics.

Original languageEnglish
Pages (from-to)341-350
Number of pages10
JournalPopulation Ecology
Volume53
Issue number2
DOIs
Publication statusPublished - 2011 Apr 1

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zooplankton
egg
algae
Daphnia
eutrophication
plankton
hatching
food
community dynamics
alga
resource

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics

Cite this

Nakazawa, Takefumi ; Kuwamura, Masataka ; Yamamura, Norio. / Implications of resting eggs of zooplankton for the paradox of enrichment. In: Population Ecology. 2011 ; Vol. 53, No. 2. pp. 341-350.
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Implications of resting eggs of zooplankton for the paradox of enrichment. / Nakazawa, Takefumi; Kuwamura, Masataka; Yamamura, Norio.

In: Population Ecology, Vol. 53, No. 2, 01.04.2011, p. 341-350.

Research output: Contribution to journalArticle

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