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Cycles in insect populations: delayed density dependence or exogenous driving variables?

SummaryDelayed density dependence, and the cycles in insect populations that it can generate, are often investigated using time‐series analysis. Recently, several authors have raised concerns about the validity of using time‐series analysis to detect density dependence. One particular concern is the suggestion that exogenous driving variables, such as cyclic weather patterns, can lead to the spurious detection of density dependence in natural populations.