Detecting Changes in Ecological Time Series
Some practical techniques are discussed for analyzing time series whose statistical properties are changing with time. We first consider how principal component analysis can reduce the multidimensional nature of certain series and, in particular, apply this techniques to analyze of changing seasonal patterns. Discussion of trend, changes in oscillatory behavior and unusual events flow. The problem of making inferences regarding causation is briefly considered. We conclude with a call for flexibility in approach.
The Ecological Society of America
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