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Interaction network based early-warning indicators of vegetation transitions

AuthorsTirabassi, G.; Viebahn, J.; Dakos, Vasilis ; Dijkstra, Henk A.; Masoller, C.; Rietker, M.; Dekker, S.C.
Early-warning indicators
Catastrophic transitions
Issue Date2014
CitationEcological Complexity 19: 148- 157 (2014)
AbstractChanges in vegetation patterns in semi-arid regions can precede the abrupt transition to bare soil. Here, complex network techniques are used to develop novel early-warning indicators for these desertification transitions. These indicators are applied to results from a local positive feedback vegetation model and are compared to classical indicators, such as the autocorrelation and variance of biomass time series. A quantitative measure is also introduced to evaluate the quality of the early-warning indicators. Based on this measure, the network-based indicators are superior to the classical ones, being more sensitive to the presence of the transition point.
Identifiersdoi: 10.1016/j.ecocom.2014.06.004
issn: 1476-945X
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