Temporal variations in English populations of a forest insect pest, the green spruce aphid (Elatobium abietinum), associated with the North Atlantic Oscillation and global warming

Based on an exceptionally long modern ecological dataset (41 years), it has been possible to show that warm weather in England associated with a positive North Atlantic Oscillation (NAO) index causes the spring migration of the green spruce aphid (Elatobium abietinum), a pest species of spruce trees...

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Bibliographic Details
Published in:Quaternary International
Main Authors: Westgarth-Smith, Angus, Leroy, S.A.G., Collins, P.E.F., Harrington, R.
Format: Article in Journal/Newspaper
Language:unknown
Published: Elsevier 2007
Subjects:
Biological Sciences
North Atlantic
North Atlantic oscillation
Online Access:https://eprints.bbk.ac.uk/id/eprint/19611/
https://doi.org/10.1016/j.quaint.2007.05.001
Description
Summary:Based on an exceptionally long modern ecological dataset (41 years), it has been possible to show that warm weather in England associated with a positive North Atlantic Oscillation (NAO) index causes the spring migration of the green spruce aphid (Elatobium abietinum), a pest species of spruce trees (Picea) to start earlier, continue for longer and contain more aphids. An upward trend in the NAO index during the period 1966–2006 is associated with an increasing population size of E. abietinum. It is important to understand the mechanisms behind the population fluctuations, because this aphid causes considerable damage to Picea plantations. Present day weather-associated fluctuations in forest insect pests may be useful analogues in understanding past pest outbreaks in forests.

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