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Perturbation experiments and fluctuation enhancement in finite size of lattice ecosystems: Uncertainty in top-predator conservation

Authors
Journal
Ecological Informatics
1574-9541
Publisher
Elsevier
Publication Date
Volume
3
Issue
2
Identifiers
DOI: 10.1016/j.ecoinf.2008.01.005
Keywords
  • Monte Carlo Simulation
  • Top-Predator Conservation
  • Fluctuation Enhancement
  • Finite-Size Lattice
  • Linear Langevin Equation
  • Population Uncertainty
Disciplines
  • Biology

Abstract

Abstract Study of perturbation experiments is crucial for conservation biology. We carry out Monte Carlo simulations on finite-size lattices composed of n species ( n ≤ 4). The value of mortality rate m of top predator is altered to a higher or lower level, and a fluctuation enhancement (FE) is explored. Here FE means an uncertainty in population dynamics. It is found for n ≥ 2 that FE is observed, when m is decreased. Namely, when we protect the top predator, its population dynamics becomes very difficult to predict.

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